Version 2.19.1

Fix unit map storage for 16-bit variables
Store unit map attributes as vmvar_t and derive VR/VW transfer sizes from their element type. This prevents buffer overruns after vmvar_t became uint16_t and fixes upward movement in Rance IV. Add scenario coverage for both transfer directions and verify that adjacent variables remain intact.
2026-09-26 16:38:06 +03:00 · 2026-08-02 12:41:18 +09:00 · 2026-08-02 12:34:40 +09:00 · 2026-07-24 21:04:25 +09:00 · 2026-07-24 21:04:22 +09:00 · 2026-07-19 12:53:09 +09:00
359 changed files with 15779 additions and 20494 deletions
@@ -6,7 +6,7 @@ jobs:
    runs-on: ubuntu-latest

    steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6

    - name: Install Deps
      run: sudo apt install ninja-build
@@ -22,7 +22,7 @@ jobs:
        KEYSTORE_PASSWORD: ${{ secrets.KEYSTORE_PASSWORD }}

    - name: Upload artifacts
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v7
      with:
-        name: xsystem35-apk
        path: android/app/build/outputs/apk/release/app-release.apk
+        archive: false
@@ -10,21 +10,24 @@ jobs:
    runs-on: ubuntu-latest
    steps:

-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6

    - name: Setup cache
      id: cache-system-libraries
-      uses: actions/cache@v4
+      uses: actions/cache@v5
      with:
        path: ${{env.EM_CACHE_FOLDER}}
        key: ${{env.EM_VERSION}}-${{ runner.os }}

    - name: Setup Emscripten toolchain
-      uses: mymindstorm/setup-emsdk@v14
+      uses: emscripten-core/setup-emsdk@v16
      with:
        version: ${{ env.EM_VERSION }}
        actions-cache-folder: ${{env.EM_CACHE_FOLDER}}

+    - name: Work around emscripten-core/emscripten#26534
+      run: npm install -g typescript@5
+
    - name: Build
      run: |
        mkdir -p out/wasm
@@ -35,7 +38,7 @@ jobs:
        mv src/xsystem35.* xsystem35/

    - name: Upload artifacts
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v7
      with:
        name: xsystem35-wasm
        path: out/wasm/xsystem35
@@ -10,12 +10,12 @@ jobs:

    name: Linux ${{ matrix.build-type }}
    steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6

    - name: Install Deps
      run: |
        sudo apt update
-        sudo apt install libgtk-3-dev libsdl2-dev libsdl2-ttf-dev libsdl2-mixer-dev libwebp-dev libportmidi-dev libcjson-dev asciidoctor
+        sudo apt install libsdl2-dev libsdl2-ttf-dev libsdl2-mixer-dev libwebp-dev libportmidi-dev libcjson-dev asciidoctor gettext

    - name: Build
      run: |
@@ -27,3 +27,16 @@ jobs:
    - name: Test
      run: ctest --output-on-failure
      working-directory: out/${{ matrix.build-type }}
+
+    - name: Verify xsystem35.pot is up to date
+      if: matrix.build-type == 'Debug'
+      run: |
+        xgettext --default-domain=xsystem35 --directory=. \
+          --keyword=_ --keyword=N_ \
+          --files-from=po/POTFILES.in \
+          --output=/tmp/fresh.pot
+        if ! diff <(grep '^msgid' po/xsystem35.pot | sort) \
+                  <(grep '^msgid' /tmp/fresh.pot | sort); then
+          echo "::error::po/xsystem35.pot is out of date. Build the 'pot' target and commit the changes under po/."
+          exit 1
+        fi
@@ -15,7 +15,9 @@ jobs:
          - sys: ucrt64
            package: "xsystem35-64bit"
            cmake_args: ""
-            deps: "cjson:p"
+            deps: >-
+              cjson:p
+              portmidi:p
    defaults:
      run:
        shell: msys2 {0}
@@ -31,18 +33,17 @@ jobs:
          SDL2_ttf:p
          SDL2_mixer:p
          libwebp:p
-          portmidi:p
          ${{ matrix.deps }}

    - name: Checkout
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6

    - name: Copy licenses
      run: |
        ls /${{ matrix.sys }}/share/licenses
        mkdir dist
        cp -r /${{ matrix.sys }}/share/licenses dist/
-        cp fonts/*.license dist/licenses/
+        cp licenses/* dist/licenses/

    - name: Install dev dependencies
      run: pacboy --noconfirm -S --needed gcc:p cmake:p ninja:p asciidoctor:p
@@ -63,7 +64,7 @@ jobs:
        cp out/release/src/xsystem35.exe out/release/doc/*.html *.md COPYING xsys35rc.sample dist/

    - name: Upload
-      uses: actions/upload-artifact@v4
+      uses: actions/upload-artifact@v7
      with:
        name: ${{ matrix.package }}
        path: dist
@@ -1,6 +1,58 @@
 # Changelog

-## 2.14.0 - 2024-01-09
+## 2.19.1 - 2026-08-02
+- Fixed an issue that prevented moving upward during battles in Rance 4.
+
+## 2.19.0 - 2026-07-19
+- Replaced the GTK-based popup menu and dialogs with a pure-SDL implementation.
+- On Android, the popup menu opens with a three-finger tap.
+- Android: Added installation directly from CD-ROM images.
+- Implemented volume control panel.
+- Added `mute_on_unfocus` option to mute audio while the window is unfocused.
+
+## 2.18.0 - 2026-06-23
+- Added support for the intro demo of Daiakuji.
+- Replaced the bundled mincho font with IPA Mincho.
+
+## 2.17.1 - 2026-01-10
+- Fixed an issue where Rance 5D could not save files on non-Windows systems.
+- Improved fast-forward behavior using the Ctrl key in Rance 5D.
+- The `SI 2` command now returns 0 if a playlist file is not provided.
+
+## 2.17.0 - 2025-11-09
+- Added "Streamer Mode" to mosaic specified (NSFW) images. This is enabled via the `-censor <file>` command-line option.
+- Windows: Fixed an issue where Rance 5D could not save files if the `Save` directory did not exist.
+
+## 2.16.1 - 2025-08-28
+- Fixed text rendering issue in SACT log (#71)
+- Windows: The 32-bit version no longer supports the portmidi MIDI backend
+
+## 2.16.0 - 2025-06-13
+- Fixed map tile color issue in Graymerca (#67)
+- Windows: Implemented number input dialog for the `NI` command (#68)
+- Android: Added "Clear Save Files" launcher menu command
+
+## 2.15.1 - 2025-05-14
+- Fixed a text rendering issue in Rance 5D (#66)
+
+## 2.15.0 - 2025-04-21
+- Fixed color palette bug introduced in v2.14.2.
+- Fixed uncancellable message waiting mode.
+- Android: "Install from ZIP" button is moved to the top-right option menu.
+- Android: Improved extraction logic of track numbers from audio file names.
+
+## 2.14.3 - 2025-04-01
+- Fixed build for big endian architectures.
+
+## 2.14.2 - 2025-03-09
+- Android: Back button to exit the game (#50)
+- Improved touch input usability in ママトト (#64)
+
+## 2.14.1 - 2025-02-07
+- Fixed font selection and text decoration not working in selection menus.
+- Fixed a graphic issue in DALK intro.
+
+## 2.14.0 - 2025-01-09
 - New supported games: 俺の下であがけ and 楽園行.
 - Windows: On Windows 10 version 1903 or above, now xsystem35 can handle
  Japanese filenames correctly even if the system locale is not Japanese.
@@ -1,16 +1,11 @@
-cmake_minimum_required(VERSION 3.13)
-
-# Rebuild external projects when download URL changes
-if (CMAKE_VERSION VERSION_GREATER_EQUAL "3.24.0")
-  cmake_policy(SET CMP0135 NEW)
-endif()
+cmake_minimum_required(VERSION 3.13...4.0)

 project(xsystem35 LANGUAGES C)
 set(CMAKE_C_STANDARD 99)
 enable_testing()
 set(CMAKE_EXPORT_COMPILE_COMMANDS TRUE)

-set(XSYSTEM35_VERSION "2.14.0")
+set(XSYSTEM35_VERSION "2.19.1")

 include(CheckSymbolExists)
 include(FetchContent)
@@ -37,8 +32,8 @@ endfunction()
 function(fetch_webp)
  FetchContent_Declare(
    libwebp
-    URL https://storage.googleapis.com/downloads.webmproject.org/releases/webp/libwebp-1.4.0.tar.gz
-    URL_HASH SHA1=0b1c8bea200caaa010182609dbaaa91aec69b64d
+    URL https://storage.googleapis.com/downloads.webmproject.org/releases/webp/libwebp-1.5.0.tar.gz
+    URL_HASH SHA1=b21aa842136dc59a72a38776a5aa73f4d0b00ac5
    )
  set(WEBP_BUILD_ANIM_UTILS OFF CACHE BOOL "Build animation utilities." FORCE)
  set(WEBP_BUILD_CWEBP OFF CACHE BOOL "Build the cwebp command line tool." FORCE)
@@ -92,12 +87,7 @@ else()  # non-emscripten, non-android
  add_library(zlib ALIAS ZLIB::ZLIB)

  include(FindPkgConfig)
-  optional_pkg_check_modules(GTK3 IMPORTED_TARGET gtk+-3.0)
-  if (GTK3_FOUND)
-    set(ENABLE_GTK 1)
-  endif()
-
-  pkg_check_modules(SDL2 REQUIRED IMPORTED_TARGET sdl2)
+  pkg_check_modules(SDL2 REQUIRED IMPORTED_TARGET sdl2>=2.18.0)
  pkg_check_modules(SDL2TTF REQUIRED IMPORTED_TARGET SDL2_ttf)
  pkg_check_modules(SDL2MIXER REQUIRED IMPORTED_TARGET SDL2_mixer)
  if (WIN32)
@@ -158,14 +148,19 @@ else()  # non-emscripten, non-android
  endif()
 endif()

-# Menu
+# i18n support
+#
+# Translate via libintl if available; otherwise fall back to a built-in catalog
+# compiled from the .po files.
+#
+# To add a language, create po/<lang>.po and list <lang> here.
+set(NLS_LANGUAGES ja)

-if (ENABLE_GTK)
-  # i18n support (currently only menus are translated)
+if (NOT EMSCRIPTEN AND NOT ANDROID AND NOT WIN32)
  include(FindIntl)
  include(FindGettext)
  if (Intl_FOUND AND GETTEXT_FOUND)
-    set(ENABLE_NLS 1)
+    set(HAVE_LIBINTL 1)
    add_compile_definitions(LOCALEDIR="${CMAKE_INSTALL_PREFIX}/share/locale")
    include_directories(${Intl_INCLUDE_DIRS})
    link_libraries(${Intl_LIBRARIES})
@@ -232,9 +227,11 @@ add_subdirectory(fonts)
 if (NOT ANDROID AND NOT EMSCRIPTEN)
  add_subdirectory(doc)
 endif()
-if (ENABLE_NLS)
-  add_subdirectory(po)
-endif()
+add_subdirectory(po)

 add_subdirectory(modules)
 target_link_libraries(xsystem35 PRIVATE modules)
+
+if (NOT ANDROID AND NOT EMSCRIPTEN)
+  add_subdirectory(test)
+endif()
@@ -16,9 +16,10 @@ the following features:
 ### Playing Audio Files as Virtual CD Music

 Many System 3.x games feature music as audio tracks on the CD-ROM. xsystem35
-can play music from audio files, eliminating the need to insert CDs. To use
-ripped audio files, create a file named `playlist.txt` in the game directory
-and list the paths to your tracks, one per line. For example:
+can play music from audio files, eliminating the need to insert CDs. Supported
+audio file formats are MP3 and Ogg. To use ripped audio files, create a file
+named `playlist.txt` in the game directory and list the paths to your tracks,
+one per line. For example:

 ```
 # The first line is not used
@@ -60,6 +61,14 @@ and examine or modify game variables. There are two ways to use the debugger:
  launch the debugger with a console interface. Type `help` to see a list of
  available commands.

+### Streamer Mode
+
+xsystem35 introduces a "Streamer Mode" to make playing games with NSFW content
+safer for streaming or public viewing. When enabled with the `-censor <file>`
+option, images specified in the provided file will be automatically mosaiced.
+
+The `misc/censor/` directory contains example censor list files for some games.
+
 ## Installation

 Prebuilt packages for Windows and Android can be downloaded from the
@@ -96,7 +105,7 @@ See [xsystem35 command manual](doc/xsystem35.6.adoc) for detailed usage.
 ### Linux (Debian / Ubuntu)

 ```bash
-$ sudo apt install build-essential cmake libgtk-3-dev libsdl2-dev libsdl2-ttf-dev libsdl2-mixer-dev libwebp-dev libportmidi-dev libcjson-dev asciidoctor
+$ sudo apt install build-essential cmake libsdl2-dev libsdl2-ttf-dev libsdl2-mixer-dev libwebp-dev libportmidi-dev libcjson-dev asciidoctor
 $ mkdir -p out/debug
 $ cd out/debug
 $ cmake -DCMAKE_BUILD_TYPE=Debug ../../
@@ -1,13 +1,77 @@
 # xsystem35 for Android

+Minimum supported Android version: 5.0
+
 ## Download
 You can download prebuilt APKs
 [here](https://github.com/kichikuou/xsystem35-sdl2/releases).

-## Build
-Prerequisites:
- Android SDK >=28
- Android NDK >=r15c
+### Installing with Obtainium
+Alternatively, you can install `xsystem35-sdl2` using [Obtainium](https://github.com/ImranR98/Obtainium). Obtainium will detect new releases and allow you to update the app directly.
+
+1. Install Obtainium on your Android device.
+2. Click the badge below to add the app to Obtainium:
+
+   [<img src="https://raw.githubusercontent.com/ImranR98/Obtainium/main/assets/graphics/badge_obtainium.png" alt="Get it on Obtainium" height="60">](https://apps.obtainium.imranr.dev/redirect?r=obtainium://app/%7B%22id%22%3A%22io.github.kichikuou.xsystem35%22%2C%22url%22%3A%22https%3A%2F%2Fgithub.com%2Fkichikuou%2Fxsystem35-sdl2%22%2C%22author%22%3A%22kichikuou%22%2C%22name%22%3A%22xsystem35%22%2C%22categories%22%3A%5B%22games%22%5D%7D)
+
+## Usage
+### Basic Usage
+You can install games either from a prepared ZIP file or directly from a CD-ROM
+image.
+
+#### Installing from a ZIP
+1. Create a ZIP file containing all the game files and BGM files (see
+   [below](#preparing-a-zip) for details), and transfer it to your device.
+2. Open the app. Tap the option menu (three dots in the top right corner) and
+   select "Install from ZIP".
+3. Select the ZIP file you created in step 1.
+4. The game will start.
+
+#### Installing from a CD image
+1. Transfer the CD image file(s) to your device.
+2. Open the app. Tap the option menu and select "Install from CD image".
+3. Select the image file and, when needed, the matching metadata file at the
+   same time. The supported combinations are:
+   - `.iso`
+   - `.bin` or `.img` with matching `.cue`
+   - `.bin` or `.img` with matching `.ccd`
+   - `.mdf` with matching `.mds`
+
+   In many Android file pickers, tapping a file immediately selects only that
+   one file. Long-press a file first to enter multi-select mode, then select
+   both the image file and its metadata file.
+4. The game will start.
+
+### Preparing a ZIP
+- Include all files from the `GAMEDATA` folder (such as `.ALD` files and
+  others). `.EXE` and `.DLL` files are not necessary, but you can include them
+  if you want.
+- Music files (`.mp3`, `.ogg`, or `.wav`) whose filenames have a number either
+  at the beginning or just before the extension are recognized as BGM files.
+  For example:
+  - `Track2.mp3`
+  - `15.ogg`
+  - `02 - Title.mp3`
+  - `rance4_03.wav` (Note: The filename shouldn't be `rance403.wav`, as it
+    would be treated as the 403rd track.)
+
+Note: This ZIP format is also compatible with
+[Kichikuou on Web](http://kichikuou.github.io/web/).
+
+### Miscellaneous
+- To simulate a right-click, tap the black bars on either the left or right,
+  or top or bottom of the screen.
+- You can export or import save files via the game list's option menu.
+- To uninstall a game, long-tap its title in the game list.
+
+## Known Issues
+- Android versions older than 7.0 cannot handle ZIP files containing Shift-JIS
+  filenames. This issue occurs with some ZIP files distributed on
+  [retroc.net](http://retropc.net/alice/). If you encounter the error message
+  "This type of ZIP is not supported," unzip the file on your PC and re-archive
+  it using modern ZIP creation software.
+
+## Building from Source

 ### Using Android Studio
 Open this directory as an Android Studio project.
@@ -23,8 +87,8 @@ sudo apt install git wget unzip default-jdk-headless ninja-build
 # Install Android SDK / NDK
 export ANDROID_SDK_ROOT=$HOME/android-sdk
 mkdir -p $ANDROID_SDK_ROOT/cmdline-tools
-wget https://dl.google.com/android/repository/commandlinetools-linux-10406996_latest.zip
-unzip commandlinetools-linux-10406996_latest.zip -d $ANDROID_SDK_ROOT/cmdline-tools
+wget https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip
+unzip commandlinetools-linux-11076708_latest.zip -d $ANDROID_SDK_ROOT/cmdline-tools
 mv $ANDROID_SDK_ROOT/cmdline-tools/cmdline-tools $ANDROID_SDK_ROOT/cmdline-tools/tools
 yes | $ANDROID_SDK_ROOT/cmdline-tools/tools/bin/sdkmanager --licenses
 $ANDROID_SDK_ROOT/cmdline-tools/tools/bin/sdkmanager ndk-bundle 'cmake;3.22.1'
@@ -35,39 +99,3 @@ git clone https://github.com/kichikuou/xsystem35-sdl2.git
 cd xsystem35-sdl2/android
 ./gradlew build  # or ./gradlew installDebug if you have a connected device
 ```
-
-## Usage
-### Basic Usage
-1. Create a ZIP file containing all the game files and BGM files (see
-   [below](#preparing-a-zip) for details), and transfer it to your device.
-2. Open the app. A list of installed games will be displayed. Since no games
-   have been installed yet, only the "Install from ZIP" button will be visible.
-   Tap it.
-3. Select the ZIP file you created in step 1.
-4. The game will start. To simulate a right-click, tap the black bars on either
-   the left or right, or top or bottom of the screen.
-
-### Preparing a ZIP
- Include all files from the `GAMEDATA` folder (such as `.ALD` files and
-  others). `.EXE` and `.DLL` files are not necessary, but you can include them
-  if you want.
- Music files (`.mp3`, `.ogg`, or `.wav`) whose filenames end with a number
-  will be recognized as BGM files. For example:
-  - `Track2.mp3`
-  - `15.ogg`
-  - `rance4_03.wav` (Note: The filename shouldn't be `rance403.wav`, as it
-    would be treated as the 403rd track.)
-
-Note: This ZIP format is also compatible with
-[Kichikuou on Web](http://kichikuou.github.io/web/).
-
-### Miscellaneous
- You can export or import save files via the game list's option menu.
- To uninstall a game, long-tap its title in the game list.
-
-## Known Issues
- Android versions older than 7.0 cannot handle ZIP files containing Shift-JIS
-  filenames. This issue occurs with some ZIP files distributed on
-  [retroc.net](http://retropc.net/alice/). If you encounter the error message
-  "This type of ZIP is not supported," unzip the file on your PC and re-archive
-  it using modern ZIP creation software.
@@ -14,10 +14,10 @@ android {
    }
    compileSdkVersion 34
    defaultConfig {
-        minSdkVersion 19
+        minSdkVersion 21
        targetSdkVersion 34
-        versionCode 29
-        versionName "2.14.0" + gitRevision()
+        versionCode 36
+        versionName "2.19.1" + gitRevision()
        externalNativeBuild {
            cmake {
                arguments "-DANDROID_APP_PLATFORM=android-19", "-DANDROID_STL=c++_static"
@@ -85,6 +85,7 @@ dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.6.4'
+    testImplementation 'junit:junit:4.13.2'
 }

 static String gitRevision() {
@@ -7,8 +7,8 @@ set(PROJECT_ROOT_DIR ../../..)
 include(FetchContent)
 FetchContent_Declare(
  SDL
-  URL https://github.com/libsdl-org/SDL/releases/download/release-2.30.9/SDL2-2.30.9.tar.gz
-  URL_HASH SHA1=9403df0573d47f62f2de074b582b87576bb4abbc
+  URL https://github.com/libsdl-org/SDL/releases/download/release-2.32.10/SDL2-2.32.10.tar.gz
+  URL_HASH SHA1=ce98fa93e31836a751feca374ab28a0770b63c16
 )
 FetchContent_Declare(
  SDL_ttf
@@ -42,10 +42,12 @@ add_subdirectory(${PROJECT_ROOT_DIR} xsystem35)
 set(ASSETS_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../src/main/assets)
 file(MAKE_DIRECTORY ${ASSETS_DIR}/licenses)
 file(COPY_FILE ${PROJECT_ROOT_DIR}/fonts/MTLc3m.ttf ${ASSETS_DIR}/MTLc3m.ttf)
-file(COPY_FILE ${PROJECT_ROOT_DIR}/fonts/mincho.otf ${ASSETS_DIR}/mincho.otf)
+file(COPY_FILE ${PROJECT_ROOT_DIR}/fonts/mincho.ttf ${ASSETS_DIR}/mincho.ttf)
 file(COPY_FILE ${PROJECT_ROOT_DIR}/COPYING ${ASSETS_DIR}/licenses/xsystem35)
-file(COPY_FILE ${PROJECT_ROOT_DIR}/fonts/MTLc3m.ttf.license ${ASSETS_DIR}/licenses/MTLc3m)
-file(COPY_FILE ${PROJECT_ROOT_DIR}/fonts/mincho.otf.license ${ASSETS_DIR}/licenses/mincho)
+file(COPY_FILE ${PROJECT_ROOT_DIR}/licenses/MTLc3m.txt ${ASSETS_DIR}/licenses/MTLc3m)
+file(COPY_FILE ${PROJECT_ROOT_DIR}/licenses/mincho.txt ${ASSETS_DIR}/licenses/mincho)
+file(COPY_FILE ${PROJECT_ROOT_DIR}/licenses/nanojpeg.txt ${ASSETS_DIR}/licenses/nanojpeg)
+file(COPY_FILE ${PROJECT_ROOT_DIR}/licenses/microui.txt ${ASSETS_DIR}/licenses/microui)
 file(COPY_FILE ${sdl_SOURCE_DIR}/LICENSE.txt ${ASSETS_DIR}/licenses/SDL)
 file(COPY_FILE ${sdl_ttf_SOURCE_DIR}/LICENSE.txt ${ASSETS_DIR}/licenses/SDL_ttf)
 file(COPY_FILE ${sdl_ttf_SOURCE_DIR}/external/freetype/docs/GPLv2.TXT ${ASSETS_DIR}/licenses/freetype)
@@ -15,3 +15,84 @@
 #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
 #   public *;
 #}
+
+-keep,includedescriptorclasses,allowoptimization class org.libsdl.app.SDLInputConnection {
+    void nativeCommitText(java.lang.String, int);
+    void nativeGenerateScancodeForUnichar(char);
+}
+
+-keep,includedescriptorclasses class org.libsdl.app.SDLActivity {
+    # for some reason these aren't compatible with allowoptimization modifier
+    boolean supportsRelativeMouse();
+    void setWindowStyle(boolean);
+}
+
+-keep,includedescriptorclasses,allowoptimization class org.libsdl.app.SDLActivity {
+    java.lang.String nativeGetHint(java.lang.String); # Java-side doesn't use this, so it gets minified, but C-side still tries to register it
+    boolean onNativeSoftReturnKey();
+    void onNativeKeyboardFocusLost();
+    boolean isScreenKeyboardShown();
+    android.util.DisplayMetrics getDisplayDPI();
+    java.lang.String clipboardGetText();
+    boolean clipboardHasText();
+    void clipboardSetText(java.lang.String);
+    int createCustomCursor(int[], int, int, int, int);
+    void destroyCustomCursor(int);
+    android.content.Context getContext();
+    boolean getManifestEnvironmentVariables();
+    android.view.Surface getNativeSurface();
+    void initTouch();
+    boolean isAndroidTV();
+    boolean isChromebook();
+    boolean isDeXMode();
+    boolean isTablet();
+    void manualBackButton();
+    int messageboxShowMessageBox(int, java.lang.String, java.lang.String, int[], int[], java.lang.String[], int[]);
+    void minimizeWindow();
+    int openURL(java.lang.String);
+    void requestPermission(java.lang.String, int);
+    int showToast(java.lang.String, int, int, int, int);
+    boolean sendMessage(int, int);
+    boolean setActivityTitle(java.lang.String);
+    boolean setCustomCursor(int);
+    void setOrientation(int, int, boolean, java.lang.String);
+    boolean setRelativeMouseEnabled(boolean);
+    boolean setSystemCursor(int);
+    boolean shouldMinimizeOnFocusLoss();
+    boolean showTextInput(int, int, int, int);
+}
+
+-keep,includedescriptorclasses,allowoptimization class org.libsdl.app.HIDDeviceManager {
+    boolean initialize(boolean, boolean);
+    boolean openDevice(int);
+    int sendOutputReport(int, byte[]);
+    int sendFeatureReport(int, byte[]);
+    boolean getFeatureReport(int, byte[]);
+    void closeDevice(int);
+}
+
+-keep,includedescriptorclasses,allowoptimization class org.libsdl.app.SDLAudioManager {
+    int[] getAudioOutputDevices();
+    int[] getAudioInputDevices();
+    int[] audioOpen(int, int, int, int, int);
+    void audioWriteFloatBuffer(float[]);
+    void audioWriteShortBuffer(short[]);
+    void audioWriteByteBuffer(byte[]);
+    void audioClose();
+    int[] captureOpen(int, int, int, int, int);
+    int captureReadFloatBuffer(float[], boolean);
+    int captureReadShortBuffer(short[], boolean);
+    int captureReadByteBuffer(byte[], boolean);
+    void captureClose();
+    void audioSetThreadPriority(boolean, int);
+    native int nativeSetupJNI();
+    native void removeAudioDevice(boolean, int);
+    native void addAudioDevice(boolean, int);
+}
+
+-keep,includedescriptorclasses,allowoptimization class org.libsdl.app.SDLControllerManager {
+    void pollInputDevices();
+    void pollHapticDevices();
+    void hapticRun(int, float, int);
+    void hapticStop(int);
+}
@@ -78,6 +78,7 @@

        <activity android:name=".GameActivity"
            android:label="@string/app_name"
+            android:process=":game"
            android:alwaysRetainTaskState="true"
            android:configChanges="layoutDirection|locale|orientation|uiMode|screenLayout|screenSize|smallestScreenSize|keyboard|keyboardHidden|navigation"
            android:theme="@style/AppTheme"
@@ -0,0 +1,566 @@
+/* Copyright (C) 2026 <KichikuouChrome@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+*/
+package io.github.kichikuou.xsystem35
+
+import android.content.ContentResolver
+import android.os.ParcelFileDescriptor
+import java.io.Closeable
+import java.io.EOFException
+import java.io.File
+import java.io.FileInputStream
+import java.io.OutputStream
+import java.nio.ByteBuffer
+import java.nio.channels.FileChannel
+import java.util.Locale
+
+internal class CdImageReader private constructor(
+    private val image: RandomAccessImage,
+    private val tracks: List<TrackInfo?>,
+) : Closeable {
+    fun readSector(sector: Int, buffer: ByteArray) {
+        readDataFully(sector.toLong() * ISO_SECTOR_SIZE, buffer, 0, ISO_SECTOR_SIZE)
+    }
+
+    fun readDataFully(offset: Long, buffer: ByteArray, bufferOffset: Int, length: Int) {
+        // ISO9660 always sees logical 2048-byte data sectors even when the
+        // image stores each sector as a raw 2352-byte CD-ROM block.
+        var logicalOffset = offset
+        var outOffset = bufferOffset
+        var remaining = length
+        val sectorBuffer = ByteArray(ISO_SECTOR_SIZE)
+        while (remaining > 0) {
+            val sector = (logicalOffset / ISO_SECTOR_SIZE).toInt()
+            val offsetInSector = (logicalOffset % ISO_SECTOR_SIZE).toInt()
+            val count = minOf(remaining, ISO_SECTOR_SIZE - offsetInSector)
+            readSectorPayload(sector, sectorBuffer)
+            sectorBuffer.copyInto(buffer, outOffset, offsetInSector, offsetInSector + count)
+            logicalOffset += count
+            outOffset += count
+            remaining -= count
+        }
+    }
+
+    fun audioTracks(): List<Int> {
+        return tracks.mapIndexedNotNull { trackNumber, track ->
+            if (track?.isAudio == true) trackNumber else null
+        }
+    }
+
+    fun extractAudioTrack(trackNumber: Int, output: OutputStream) {
+        val track = tracks.getOrNull(trackNumber)
+        if (track?.isAudio != true) {
+            throw InstallFailureException(R.string.unsupported_cd_image)
+        }
+        val dataSize = track.numSectors.toLong() * RAW_AUDIO_SECTOR_SIZE
+        // CD-DA sectors are already 44.1kHz stereo 16-bit PCM; wrapping the
+        // raw sector stream in a WAV header makes it playable by SDL_mixer.
+        writeWaveHeader(output, dataSize)
+        val buffer = ByteArray(track.blockSize * 16)
+        var sector = 0
+        while (sector < track.numSectors) {
+            val sectorsToRead = minOf(16, track.numSectors - sector)
+            val bytesToRead = sectorsToRead * track.blockSize
+            image.readFully(track.offset + sector.toLong() * track.blockSize, buffer, 0, bytesToRead)
+            output.write(buffer, 0, sectorsToRead * RAW_AUDIO_SECTOR_SIZE)
+            sector += sectorsToRead
+        }
+    }
+
+    override fun close() {
+        image.close()
+    }
+
+    private fun readSectorPayload(sector: Int, buffer: ByteArray) {
+        val track = findDataTrack(sector)
+        val offset = track.offset + (sector - track.startSector).toLong() * track.blockSize + track.blockOffset
+        image.readFully(offset, buffer, 0, ISO_SECTOR_SIZE)
+    }
+
+    private fun findDataTrack(sector: Int): TrackInfo {
+        for (track in tracks) {
+            if (track == null || track.isAudio) {
+                continue
+            }
+            if (sector >= track.startSector && sector < track.startSector + track.numSectors) {
+                return track
+            }
+        }
+        throw InstallFailureException(R.string.invalid_iso9660_image)
+    }
+
+    companion object {
+        const val ISO_SECTOR_SIZE = 2048
+        private const val RAW_AUDIO_SECTOR_SIZE = 2352
+        private const val WAVE_HEADER_SIZE = 44
+        private const val MDS_MODE_AUDIO = 0xa9
+        private const val MDS_MODE_MODE1 = 0xaa
+
+        fun open(
+            contentResolver: ContentResolver,
+            files: List<SelectedInstallFile>,
+            tempDir: File,
+        ): CdImageReader {
+            val selected = selectImageFiles(files)
+            val image = RandomAccessImage.open(contentResolver, selected.image, tempDir)
+            try {
+                if (selected.metadata == null) {
+                    return CdImageReader(image, listOf(null, TrackInfo.iso(image.size)))
+                }
+                val metadataName = selected.metadata.displayName.lowercase(Locale.US)
+                val tracks = when {
+                    metadataName.endsWith(".cue") -> {
+                        val cueText = readMetadataText(contentResolver, selected.metadata)
+                        parseCue(cueText, image.size)
+                    }
+                    metadataName.endsWith(".ccd") -> {
+                        val ccdText = readMetadataText(contentResolver, selected.metadata)
+                        parseCcd(ccdText, image.size)
+                    }
+                    metadataName.endsWith(".mds") -> {
+                        val mdsBytes = readMetadataBytes(contentResolver, selected.metadata)
+                        parseMds(mdsBytes)
+                    }
+                    else -> throw InstallFailureException(R.string.unsupported_cd_image)
+                }
+                return CdImageReader(image, tracks)
+            } catch (e: Exception) {
+                image.close()
+                throw e
+            }
+        }
+
+        internal fun openForFile(
+            imageFile: File,
+            metadataName: String? = null,
+            metadataBytes: ByteArray? = null,
+        ): CdImageReader {
+            val image = RandomAccessImage.open(imageFile)
+            try {
+                if (metadataName == null) {
+                    return CdImageReader(image, listOf(null, TrackInfo.iso(image.size)))
+                }
+                val tracks = when {
+                    metadataName.lowercase(Locale.US).endsWith(".cue") -> {
+                        parseCue(metadataBytes?.toString(Charsets.UTF_8) ?: "", image.size)
+                    }
+                    metadataName.lowercase(Locale.US).endsWith(".ccd") -> {
+                        parseCcd(metadataBytes?.toString(Charsets.UTF_8) ?: "", image.size)
+                    }
+                    metadataName.lowercase(Locale.US).endsWith(".mds") -> {
+                        parseMds(metadataBytes ?: ByteArray(0))
+                    }
+                    else -> throw InstallFailureException(R.string.unsupported_cd_image)
+                }
+                return CdImageReader(image, tracks)
+            } catch (e: Exception) {
+                image.close()
+                throw e
+            }
+        }
+
+        private fun selectImageFiles(files: List<SelectedInstallFile>): SelectedImageFiles {
+            if (files.isEmpty()) {
+                throw InstallFailureException(R.string.unsupported_cd_image)
+            }
+            val isoFiles = files.filter { it.displayName.lowercase(Locale.US).endsWith(".iso") }
+            if (isoFiles.size == 1 && files.size == 1) {
+                return SelectedImageFiles(isoFiles.single(), null)
+            }
+
+            val imageFiles = files.filter {
+                val name = it.displayName.lowercase(Locale.US)
+                name.endsWith(".bin") || name.endsWith(".img") || name.endsWith(".mdf")
+            }
+            val metadataFiles = files.filter {
+                val name = it.displayName.lowercase(Locale.US)
+                name.endsWith(".cue") || name.endsWith(".ccd") || name.endsWith(".mds")
+            }
+            if (imageFiles.size == 1 && metadataFiles.isEmpty() && files.size == 1 ||
+                imageFiles.isEmpty() && metadataFiles.size == 1 && files.size == 1
+            ) {
+                throw InstallFailureException(R.string.missing_cd_image_metadata)
+            }
+            if (imageFiles.size != 1 || metadataFiles.size != 1 || files.size != 2) {
+                throw InstallFailureException(R.string.unsupported_cd_image)
+            }
+            val imageBase = imageFiles.single().baseName()
+            val metadataBase = metadataFiles.single().baseName()
+            if (imageBase != metadataBase) {
+                throw InstallFailureException(R.string.missing_cd_image_metadata)
+            }
+            if (!isSupportedMetadataForImage(imageFiles.single(), metadataFiles.single())) {
+                throw InstallFailureException(R.string.unsupported_cd_image)
+            }
+            return SelectedImageFiles(imageFiles.single(), metadataFiles.single())
+        }
+
+        private fun isSupportedMetadataForImage(
+            image: SelectedInstallFile,
+            metadata: SelectedInstallFile,
+        ): Boolean {
+            val imageName = image.displayName.lowercase(Locale.US)
+            val metadataName = metadata.displayName.lowercase(Locale.US)
+            return if (imageName.endsWith(".mdf")) {
+                metadataName.endsWith(".mds")
+            } else {
+                metadataName.endsWith(".cue") || metadataName.endsWith(".ccd")
+            }
+        }
+
+        private fun readMetadataText(
+            contentResolver: ContentResolver,
+            file: SelectedInstallFile,
+        ): String {
+            return contentResolver.openInputStream(file.uri)?.bufferedReader()?.use {
+                it.readText()
+            } ?: throw InstallFailureException(R.string.cd_image_read_error)
+        }
+
+        private fun readMetadataBytes(
+            contentResolver: ContentResolver,
+            file: SelectedInstallFile,
+        ): ByteArray {
+            return contentResolver.openInputStream(file.uri)?.use {
+                it.readBytes()
+            } ?: throw InstallFailureException(R.string.cd_image_read_error)
+        }
+
+        private fun parseCue(cueText: String, imageSize: Long): List<TrackInfo?> {
+            val cueTracks = mutableListOf<CueTrack?>()
+            var currentTrack: Int? = null
+            for (line in cueText.lines()) {
+                val fields = line.trim().split(Regex("\\s+"))
+                if (fields.isEmpty()) {
+                    continue
+                }
+                when (fields[0].uppercase(Locale.US)) {
+                    "TRACK" -> {
+                        if (fields.size < 3) {
+                            throw InstallFailureException(R.string.unsupported_cd_image)
+                        }
+                        currentTrack = fields[1].toIntOrNull()
+                            ?: throw InstallFailureException(R.string.unsupported_cd_image)
+                        while (cueTracks.size <= currentTrack) {
+                            cueTracks.add(null)
+                        }
+                        cueTracks[currentTrack] = when (fields[2].uppercase(Locale.US)) {
+                            "MODE1/2048" -> CueTrack(false, 2048, 0)
+                            "MODE1/2352" -> CueTrack(false, 2352, 16)
+                            "AUDIO" -> CueTrack(true, 2352, 0)
+                            else -> throw InstallFailureException(R.string.unsupported_cd_image)
+                        }
+                    }
+                    "INDEX" -> {
+                        val trackNumber = currentTrack ?: continue
+                        if (fields.size < 3) {
+                            throw InstallFailureException(R.string.unsupported_cd_image)
+                        }
+                        val indexNumber = fields[1].toIntOrNull()
+                            ?: throw InstallFailureException(R.string.unsupported_cd_image)
+                        cueTracks[trackNumber]?.index?.put(indexNumber, indexToSector(fields[2]))
+                    }
+                }
+            }
+            return makeTrackInfo(cueTracks, imageSize)
+        }
+
+        private fun parseCcd(ccdText: String, imageSize: Long): List<TrackInfo?> {
+            val cueTracks = mutableListOf<CueTrack?>()
+            var currentTrack: Int? = null
+            for (line in ccdText.lines()) {
+                val trimmed = line.trim()
+                val trackMatch = Regex("""\[TRACK ([0-9]+)]""").matchEntire(trimmed)
+                if (trackMatch != null) {
+                    currentTrack = trackMatch.groupValues[1].toInt()
+                    while (cueTracks.size <= currentTrack) {
+                        cueTracks.add(null)
+                    }
+                    cueTracks[currentTrack] = CueTrack(false, 2352, 16)
+                    continue
+                }
+                val trackNumber = currentTrack ?: continue
+                val keyValue = trimmed.split("=", limit = 2)
+                if (keyValue.size != 2) {
+                    continue
+                }
+                when (keyValue[0].uppercase(Locale.US)) {
+                    "MODE" -> if (keyValue[1] == "0") {
+                        cueTracks[trackNumber] = CueTrack(true, 2352, 0, cueTracks[trackNumber]?.index ?: mutableMapOf())
+                    }
+                    "INDEX 0" -> cueTracks[trackNumber]?.index?.put(
+                        0,
+                        keyValue[1].toIntOrNull() ?: throw InstallFailureException(R.string.unsupported_cd_image)
+                    )
+                    "INDEX 1" -> cueTracks[trackNumber]?.index?.put(
+                        1,
+                        keyValue[1].toIntOrNull() ?: throw InstallFailureException(R.string.unsupported_cd_image)
+                    )
+                }
+            }
+            return makeTrackInfo(cueTracks, imageSize)
+        }
+
+        private fun parseMds(mdsBytes: ByteArray): List<TrackInfo?> {
+            if (mdsBytes.size < 0x70 ||
+                String(mdsBytes, 0, 16, Charsets.US_ASCII).trimEnd('\u0000') != "MEDIA DESCRIPTOR"
+            ) {
+                throw InstallFailureException(R.string.unsupported_cd_image)
+            }
+            val entries = mdsBytes[0x62].toInt() and 0xff
+            if (0x70 + entries * 0x58 > mdsBytes.size) {
+                throw InstallFailureException(R.string.unsupported_cd_image)
+            }
+
+            val tracks = MutableList<TrackInfo?>(100) { null }
+            for (i in 0 until entries) {
+                val trackOffset = 0x70 + i * 0x50
+                val extraOffset = 0x70 + entries * 0x50 + i * 8
+                val mode = mdsBytes[trackOffset].toInt() and 0xff
+                val trackNumber = mdsBytes[trackOffset + 0x04].toInt() and 0xff
+                val sectorSize = readLittleEndianShort(mdsBytes, trackOffset + 0x10)
+                // MDS offsets are treated as 32-bit file offsets, so images
+                // beyond 4GB are unsupported.
+                val imageOffset = readLittleEndianInt(mdsBytes, trackOffset + 0x28)
+                val sectors = readLittleEndianInt(mdsBytes, extraOffset + 0x04).toInt()
+                if (trackNumber >= tracks.size) {
+                    continue
+                }
+                tracks[trackNumber] = when (mode) {
+                    MDS_MODE_AUDIO -> TrackInfo(
+                        isAudio = true,
+                        offset = imageOffset,
+                        blockSize = sectorSize,
+                        blockOffset = 0,
+                        startSector = 0,
+                        numSectors = sectors,
+                    )
+                    MDS_MODE_MODE1 -> TrackInfo(
+                        isAudio = false,
+                        offset = imageOffset,
+                        blockSize = sectorSize,
+                        blockOffset = 16,
+                        startSector = 0,
+                        numSectors = sectors,
+                    )
+                    else -> null
+                }
+            }
+            if (tracks.getOrNull(1)?.isAudio != false) {
+                throw InstallFailureException(R.string.unsupported_cd_image)
+            }
+            return tracks
+        }
+
+        private fun makeTrackInfo(cueTracks: List<CueTrack?>, imageSize: Long): List<TrackInfo?> {
+            val tracks = MutableList<TrackInfo?>(cueTracks.size) { null }
+            var offset = 0L
+            var startSector = 0
+            for (trackNumber in 1 until cueTracks.size) {
+                val cueTrack = cueTracks[trackNumber] ?: continue
+                val index1 = cueTrack.index[1]
+                    ?: throw InstallFailureException(R.string.unsupported_cd_image)
+                // INDEX 0 describes a pregap, but a zero INDEX 0 is treated as absent.
+                cueTrack.index[0]?.takeIf { it != 0 }?.let { index0 ->
+                    val gap = index1 - index0
+                    if (gap > 0) {
+                        startSector += gap
+                        offset += gap.toLong() * cueTrack.blockSize
+                    }
+                }
+                val nextTrack = cueTracks.drop(trackNumber + 1).firstOrNull { it != null }
+                val nextStart = nextTrack?.let { it.index[0]?.takeIf { index -> index != 0 } ?: it.index[1] }
+                val numSectors = if (nextStart != null) {
+                    nextStart - index1
+                } else {
+                    ((imageSize - offset) / cueTrack.blockSize).toInt()
+                }
+                if (numSectors <= 0) {
+                    throw InstallFailureException(R.string.unsupported_cd_image)
+                }
+                tracks[trackNumber] = TrackInfo(
+                    isAudio = cueTrack.isAudio,
+                    offset = offset,
+                    blockSize = cueTrack.blockSize,
+                    blockOffset = cueTrack.blockOffset,
+                    startSector = startSector,
+                    numSectors = numSectors,
+                )
+                startSector += numSectors
+                offset += numSectors.toLong() * cueTrack.blockSize
+            }
+            return tracks
+        }
+
+        private fun indexToSector(index: String): Int {
+            val parts = index.split(":").map {
+                it.toIntOrNull() ?: throw InstallFailureException(R.string.unsupported_cd_image)
+            }
+            if (parts.size != 3) {
+                throw InstallFailureException(R.string.unsupported_cd_image)
+            }
+            return parts[0] * 60 * 75 + parts[1] * 75 + parts[2]
+        }
+
+        private fun writeWaveHeader(output: OutputStream, dataSize: Long) {
+            val header = ByteArray(WAVE_HEADER_SIZE)
+            writeAscii(header, 0, "RIFF")
+            writeLittleEndianInt(header, 4, dataSize + 36)
+            writeAscii(header, 8, "WAVE")
+            writeAscii(header, 12, "fmt ")
+            writeLittleEndianInt(header, 16, 16)
+            writeLittleEndianShort(header, 20, 1)
+            writeLittleEndianShort(header, 22, 2)
+            writeLittleEndianInt(header, 24, 44100)
+            writeLittleEndianInt(header, 28, 44100 * 2 * 2)
+            writeLittleEndianShort(header, 32, 2 * 2)
+            writeLittleEndianShort(header, 34, 16)
+            writeAscii(header, 36, "data")
+            writeLittleEndianInt(header, 40, dataSize)
+            output.write(header)
+        }
+
+        private fun writeAscii(buffer: ByteArray, offset: Int, value: String) {
+            value.toByteArray(Charsets.US_ASCII).copyInto(buffer, offset)
+        }
+
+        private fun writeLittleEndianShort(buffer: ByteArray, offset: Int, value: Int) {
+            buffer[offset] = value.toByte()
+            buffer[offset + 1] = (value shr 8).toByte()
+        }
+
+        private fun writeLittleEndianInt(buffer: ByteArray, offset: Int, value: Long) {
+            buffer[offset] = value.toByte()
+            buffer[offset + 1] = (value shr 8).toByte()
+            buffer[offset + 2] = (value shr 16).toByte()
+            buffer[offset + 3] = (value shr 24).toByte()
+        }
+
+        private fun readLittleEndianShort(buffer: ByteArray, offset: Int): Int {
+            return (buffer[offset].toInt() and 0xff) or
+                ((buffer[offset + 1].toInt() and 0xff) shl 8)
+        }
+
+        private fun readLittleEndianInt(buffer: ByteArray, offset: Int): Long {
+            return (buffer[offset].toLong() and 0xff) or
+                ((buffer[offset + 1].toLong() and 0xff) shl 8) or
+                ((buffer[offset + 2].toLong() and 0xff) shl 16) or
+                ((buffer[offset + 3].toLong() and 0xff) shl 24)
+        }
+    }
+}
+
+private data class SelectedImageFiles(
+    val image: SelectedInstallFile,
+    val metadata: SelectedInstallFile?,
+)
+
+private data class CueTrack(
+    val isAudio: Boolean,
+    val blockSize: Int,
+    val blockOffset: Int,
+    val index: MutableMap<Int, Int> = mutableMapOf(),
+)
+
+private data class TrackInfo(
+    val isAudio: Boolean,
+    val offset: Long,
+    val blockSize: Int,
+    val blockOffset: Int,
+    val startSector: Int,
+    val numSectors: Int,
+) {
+    companion object {
+        fun iso(imageSize: Long): TrackInfo {
+            return TrackInfo(
+                isAudio = false,
+                offset = 0,
+                blockSize = CdImageReader.ISO_SECTOR_SIZE,
+                blockOffset = 0,
+                startSector = 0,
+                numSectors = (imageSize / CdImageReader.ISO_SECTOR_SIZE).toInt(),
+            )
+        }
+    }
+}
+
+private class RandomAccessImage private constructor(
+    private val channel: FileChannel,
+    private val descriptor: ParcelFileDescriptor?,
+    private val tempFile: File?,
+) : Closeable {
+    val size: Long = channel.size()
+
+    fun readFully(offset: Long, buffer: ByteArray, bufferOffset: Int, length: Int) {
+        val byteBuffer = ByteBuffer.wrap(buffer, bufferOffset, length)
+        var pos = offset
+        while (byteBuffer.hasRemaining()) {
+            val read = channel.read(byteBuffer, pos)
+            if (read < 0) {
+                throw EOFException("Unexpected end of CD image")
+            }
+            pos += read
+        }
+    }
+
+    override fun close() {
+        channel.close()
+        descriptor?.close()
+        tempFile?.delete()
+    }
+
+    companion object {
+        internal fun open(file: File): RandomAccessImage {
+            return RandomAccessImage(FileInputStream(file).channel, null, null)
+        }
+
+        fun open(
+            contentResolver: ContentResolver,
+            file: SelectedInstallFile,
+            tempDir: File,
+        ): RandomAccessImage {
+            val descriptor = contentResolver.openFileDescriptor(file.uri, "r")
+                ?: throw InstallFailureException(R.string.cd_image_read_error)
+            try {
+                val channel = FileInputStream(descriptor.fileDescriptor).channel
+                channel.size()
+                return RandomAccessImage(channel, descriptor, null)
+            } catch (e: Exception) {
+                descriptor.close()
+            }
+
+            // Some SAF providers expose the URI as a pipe. Copy those to an
+            // app-private temp file so the CD reader can use positional reads.
+            val tempFile = File.createTempFile("cdimage-", ".img", tempDir)
+            try {
+                contentResolver.openInputStream(file.uri)?.use { input ->
+                    tempFile.outputStream().buffered().use { output ->
+                        input.copyTo(output)
+                    }
+                } ?: throw InstallFailureException(R.string.cd_image_read_error)
+                return RandomAccessImage(FileInputStream(tempFile).channel, null, tempFile)
+            } catch (e: Exception) {
+                tempFile.delete()
+                throw e
+            }
+        }
+    }
+}
+
+private fun SelectedInstallFile.baseName(): String {
+    return displayName.substringBeforeLast('.').lowercase(Locale.US)
+}
@@ -20,6 +20,7 @@ package io.github.kichikuou.xsystem35
 import android.app.AlertDialog
 import android.media.MediaPlayer
 import android.os.Bundle
+import android.os.Process
 import android.text.InputType
 import android.util.Log
 import android.widget.EditText
@@ -56,6 +57,18 @@ class GameActivity : SDLActivity() {
        midi.onActivityResume()
    }

+    override fun onDestroy() {
+        try {
+            super.onDestroy()
+        } finally {
+            try {
+                midi.release()
+            } finally {
+                Process.killProcess(Process.myPid())
+            }
+        }
+    }
+
    override fun getLibraries(): Array<String> {
        return arrayOf("SDL2", "xsystem35")
    }
@@ -75,7 +88,6 @@ class GameActivity : SDLActivity() {
                return
        }
        File(gameRoot, Launcher.TITLE_FILE).writeText(str)
-        Launcher.updateGameList()
    }

    private fun textInputDialog(msg: String, oldVal: String, maxLen: Int, result: Array<String?>) {
@@ -154,11 +166,21 @@ class GameActivity : SDLActivity() {
 }

 private class MidiPlayer {
+    private enum class State {
+        STOPPED,
+        PLAYING,
+        PAUSED,
+        RELEASED,
+    }
+
    private val player = MediaPlayer()
-    private var playing = false
-    private var playerPaused = false
+    private var state = State.STOPPED

    fun start(path: String, loop: Boolean) {
+        if (state == State.RELEASED) {
+            return
+        }
+        state = State.STOPPED
        try {
            player.apply {
                reset()
@@ -167,7 +189,7 @@ private class MidiPlayer {
                prepare()
                start()
            }
-            playing = true
+            state = State.PLAYING
        } catch (e: IOException) {
            Log.e("midiStart", "Cannot play midi", e)
            player.reset()
@@ -175,27 +197,41 @@ private class MidiPlayer {
    }

    fun stop() {
-        if (playing && player.isPlaying) {
-            player.stop()
-            playing = false
+        when (state) {
+            State.PLAYING, State.PAUSED -> {
+                player.stop()
+                state = State.STOPPED
+            }
+            State.STOPPED, State.RELEASED -> Unit
        }
    }

    fun currentPosition(): Int {
-        return if (playing) player.currentPosition else 0
+        return when (state) {
+            State.PLAYING, State.PAUSED -> player.currentPosition
+            State.STOPPED, State.RELEASED -> 0
+        }
    }

    fun onActivityStop() {
-        if (playing && player.isPlaying) {
+        if (state == State.PLAYING && player.isPlaying) {
            player.pause()
-            playerPaused = true
+            state = State.PAUSED
        }
    }

    fun onActivityResume() {
-        if (playerPaused) {
+        if (state == State.PAUSED) {
            player.start()
-            playerPaused = false
+            state = State.PLAYING
        }
    }
+
+    fun release() {
+        if (state == State.RELEASED) {
+            return
+        }
+        state = State.RELEASED
+        player.release()
+    }
 }
@@ -0,0 +1,282 @@
+/* Copyright (C) 2026 <KichikuouChrome@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+*/
+package io.github.kichikuou.xsystem35
+
+import android.content.ContentResolver
+import android.net.Uri
+import android.os.Build
+import android.util.Log
+import kotlinx.coroutines.runBlocking
+import java.io.File
+import java.io.FileOutputStream
+import java.io.IOException
+import java.io.InputStream
+import java.io.UTFDataFormatException
+import java.nio.charset.Charset
+import java.util.zip.ZipEntry
+import java.util.zip.ZipInputStream
+
+data class SelectedInstallFile(
+    val uri: Uri,
+    val displayName: String,
+)
+
+class GameInstaller(private val store: GameStore) {
+    suspend fun installZip(input: InputStream, progressCallback: suspend (String) -> Unit): File {
+        val dir = store.createDirForGame()
+        var committed = false
+        try {
+            val gameDir = extractFiles(input, dir, progressCallback)
+            committed = true
+            return gameDir
+        } finally {
+            if (!committed && !dir.deleteRecursively()) {
+                Log.w("launcher", "Failed to delete incomplete install directory: $dir")
+            }
+        }
+    }
+
+    suspend fun installCdImage(
+        files: List<SelectedInstallFile>,
+        contentResolver: ContentResolver,
+        tempDir: File,
+        progressCallback: suspend (String) -> Unit
+    ): File {
+        val dir = store.createDirForGame()
+        var committed = false
+        try {
+            val gameDir = extractCdImage(files, contentResolver, tempDir, dir, progressCallback)
+            committed = true
+            return gameDir
+        } finally {
+            if (!committed && !dir.deleteRecursively()) {
+                Log.w("launcher", "Failed to delete incomplete install directory: $dir")
+            }
+        }
+    }
+
+    internal suspend fun installCdImageForTest(
+        cdImage: CdImageReader,
+        progressCallback: suspend (String) -> Unit
+    ): File {
+        val dir = store.createDirForGame()
+        var committed = false
+        try {
+            val gameDir = extractCdImage(cdImage, dir, progressCallback)
+            committed = true
+            return gameDir
+        } finally {
+            if (!committed && !dir.deleteRecursively()) {
+                Log.w("launcher", "Failed to delete incomplete install directory: $dir")
+            }
+        }
+    }
+
+    private suspend fun extractFiles(
+        input: InputStream,
+        outDir: File,
+        progressCallback: suspend (String) -> Unit
+    ): File {
+        val configWriter = GameConfigWriter()
+        val hadDecodeError = forEachZipEntrySuspending(input) { zipEntry, zip ->
+            Log.i("extractFiles", zipEntry.name)
+            if (zipEntry.isDirectory)
+                return@forEachZipEntrySuspending
+            val resolvedPath = resolveOutputPath(outDir, zipEntry.name)
+            val path = resolvedPath.file
+            path.parentFile?.mkdirs()
+            progressCallback(resolvedPath.relativePath)
+            FileOutputStream(path).buffered().use {
+                zip.copyTo(it)
+            }
+            configWriter.maybeAdd(resolvedPath.relativePath)
+        }
+        if (!configWriter.ready) {
+            if (hadDecodeError)
+                throw InstallFailureException(R.string.unsupported_zip)
+            throw InstallFailureException(R.string.cannot_find_ald)
+        }
+        configWriter.write(outDir)
+        return configWriter.gameDir?.let { File(outDir, it) } ?: outDir
+    }
+
+    private suspend fun extractCdImage(
+        files: List<SelectedInstallFile>,
+        contentResolver: ContentResolver,
+        tempDir: File,
+        outDir: File,
+        progressCallback: suspend (String) -> Unit
+    ): File {
+        progressCallback("metadata parsing")
+        CdImageReader.open(contentResolver, files, tempDir).use { cdImage ->
+            return extractCdImage(cdImage, outDir, progressCallback)
+        }
+    }
+
+    private suspend fun extractCdImage(
+        cdImage: CdImageReader,
+        outDir: File,
+        progressCallback: suspend (String) -> Unit
+    ): File {
+        val fs = Iso9660FileSystem(cdImage)
+        val gameData = fs.findGameDataDirectory()
+            ?: throw InstallFailureException(R.string.cannot_find_game_data_directory)
+        var foundAld = false
+        fs.extractDirectory(gameData, "GAMEDATA") { path, input ->
+            val resolvedPath = resolveOutputPath(outDir, path)
+            resolvedPath.file.parentFile?.mkdirs()
+            progressCallback(resolvedPath.relativePath)
+            FileOutputStream(resolvedPath.file).buffered().use {
+                input.copyTo(it)
+            }
+            if (File(path).name.matches(""".*?s[a-z]\.ald""".toRegex(RegexOption.IGNORE_CASE))) {
+                foundAld = true
+            }
+        }
+        if (!foundAld) {
+            throw InstallFailureException(R.string.cannot_find_ald)
+        }
+        File(outDir, Launcher.GAMEDIR_FILE).writeText("GAMEDATA")
+        extractAudioTracks(cdImage, File(outDir, "GAMEDATA"), progressCallback)
+        return File(outDir, "GAMEDATA")
+    }
+
+    private suspend fun extractAudioTracks(
+        cdImage: CdImageReader,
+        gameDir: File,
+        progressCallback: suspend (String) -> Unit
+    ) {
+        val audioTracks = cdImage.audioTracks()
+        if (audioTracks.isEmpty()) {
+            return
+        }
+        val cddaDir = File(gameDir, "cdda")
+        cddaDir.mkdirs()
+        val playlist = arrayOfNulls<String>(audioTracks.maxOrNull() ?: 0)
+        for (track in audioTracks) {
+            val relativePath = "cdda/track%02d.wav".format(track)
+            val outputFile = File(gameDir, relativePath)
+            progressCallback(relativePath)
+            FileOutputStream(outputFile).buffered().use {
+                cdImage.extractAudioTrack(track, it)
+            }
+            playlist[track - 1] = relativePath
+        }
+        File(gameDir, Launcher.PLAYLIST_FILE).writeText(playlist.joinToString("\n") { it ?: "" }.trimEnd('\n'))
+    }
+}
+
+internal class InstallFailureException(val msgId: Int) : Exception()
+
+// A helper class which generates GAMEDIR_FILE and PLAYLIST_FILE.
+private class GameConfigWriter {
+    var ready = false
+        private set
+    var gameDir: String? = null
+        private set
+    private val aldRegex = """.*?s[a-z]\.ald""".toRegex(RegexOption.IGNORE_CASE)
+    private val audioRegex = """((\d+).*|.*?(\d+))\.(wav|mp3|ogg)""".toRegex(RegexOption.IGNORE_CASE)
+    private val audioFiles: Array<String?> = arrayOfNulls(100)
+
+    fun maybeAdd(path: String) {
+        val name = File(path).name
+        aldRegex.matchEntire(name)?.let {
+            gameDir = File(path).parent
+            ready = true
+        }
+        audioRegex.matchEntire(name)?.let {
+            val track = it.groupValues[2].toIntOrNull() ?: it.groupValues[3].toInt()
+            if (0 < track && track <= audioFiles.size)
+                audioFiles[track - 1] = path
+        }
+    }
+
+    fun write(outDir: File) {
+        // Generate GAMEDIR_FILE
+        gameDir?.let {
+            File(outDir, Launcher.GAMEDIR_FILE).writeText(it)
+        }
+        // Generate PLAYLIST_FILE
+        val absGameDir = gameDir?.let { File(outDir, it) } ?: outDir
+        val playlistFile = File(absGameDir, Launcher.PLAYLIST_FILE)
+        if (!playlistFile.exists()) {
+            val prefixToRemove = gameDir?.let { "$it/" } ?: ""
+            val playlist = audioFiles.joinToString("\n") {
+                it?.removePrefix(prefixToRemove) ?: ""
+            }.trimEnd('\n')
+            playlistFile.writeText(playlist)
+        }
+    }
+}
+
+/**
+ * @property file Safe canonical output path.
+ * @property relativePath Path relative to the install root after canonicalization.
+ */
+internal data class ResolvedOutputPath(val file: File, val relativePath: String)
+
+internal fun resolveOutputPath(baseDir: File, relativePath: String): ResolvedOutputPath {
+    if (File(relativePath).isAbsolute) {
+        throw IOException("Output path is absolute: $relativePath")
+    }
+    val canonicalBase = baseDir.canonicalFile
+    val file = File(canonicalBase, relativePath).canonicalFile
+    if (!isFileInsideDirectory(file, canonicalBase)) {
+        throw IOException("Output path is outside target directory: $relativePath")
+    }
+    val basePath = canonicalBase.path + File.separator
+    val canonicalRelativePath = file.path.removePrefix(basePath)
+    return ResolvedOutputPath(file, canonicalRelativePath)
+}
+
+private fun isFileInsideDirectory(file: File, directory: File): Boolean {
+    return file.path.startsWith(directory.path + File.separator)
+}
+
+internal fun forEachZipEntry(input: InputStream, action: (ZipEntry, ZipInputStream) -> Unit): Boolean =
+    runBlocking {
+        forEachZipEntrySuspending(input) { zipEntry, zip ->
+            action(zipEntry, zip)
+        }
+    }
+
+internal suspend fun forEachZipEntrySuspending(
+    input: InputStream,
+    action: suspend (ZipEntry, ZipInputStream) -> Unit
+): Boolean {
+    val zip = if (Build.VERSION.SDK_INT >= 24) {
+        ZipInputStream(input.buffered(), Charset.forName("Shift_JIS"))
+    } else {
+        ZipInputStream(input.buffered())
+    }
+    var hadDecodeError = false
+    zip.use {
+        while (true) {
+            try {
+                val zipEntry = zip.nextEntry ?: break
+                action(zipEntry, zip)
+            } catch (e: UTFDataFormatException) {
+                // Attempted to read Shift_JIS zip in Android < 7
+                Log.w("forEachZipEntry", "UTFDataFormatException: skipping a zip entry")
+                zip.closeEntry()
+                hadDecodeError = true
+            }
+        }
+    }
+    return hadDecodeError
+}
@@ -0,0 +1,142 @@
+/* Copyright (C) 2026 <KichikuouChrome@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+*/
+package io.github.kichikuou.xsystem35
+
+import android.util.Log
+import java.io.File
+import java.io.FileOutputStream
+import java.io.IOException
+import java.io.InputStream
+import java.io.OutputStream
+import java.io.UTFDataFormatException
+import java.util.zip.ZipEntry
+import java.util.zip.ZipOutputStream
+
+class GameStore(private val rootDir: File) {
+    data class Entry(val path: File, val title: String, val timestamp: Long)
+
+    private val gameList = arrayListOf<Entry>()
+    val games: List<Entry>
+        get() = gameList
+    val titles: List<String>
+        get() = gameList.map(Entry::title)
+
+    init {
+        updateGameList()
+    }
+
+    fun uninstall(id: Int) {
+        gameList[id].path.deleteRecursively()
+        gameList.removeAt(id)
+    }
+
+    fun updateGameList() {
+        var saveDirFound = false
+        gameList.clear()
+        for (path in rootDir.listFiles() ?: emptyArray()) {
+            if (!path.isDirectory)
+                continue
+            if (path.name == Launcher.SAVE_DIR) {
+                saveDirFound = true
+                continue
+            }
+            try {
+                val gameDirFile = File(path, Launcher.GAMEDIR_FILE)
+                val gamePath = if (gameDirFile.exists()) File(path, gameDirFile.readText()) else path
+                val titleFile = File(gamePath, Launcher.TITLE_FILE)
+                val title = titleFile.readText()
+                gameList.add(Entry(gamePath, title, titleFile.lastModified()))
+                migratePlaylist(path)
+            } catch (e: IOException) {
+                // Incomplete game installation. Delete it.
+                path.deleteRecursively()
+            }
+        }
+        gameList.sortByDescending(Entry::timestamp)
+        if (!saveDirFound) {
+            File(rootDir, Launcher.SAVE_DIR).mkdir()
+        }
+    }
+
+    fun createDirForGame(): File {
+        var i = 0
+        while (true) {
+            val f = File(rootDir, i++.toString())
+            if (!f.exists() && f.mkdir()) {
+                return f
+            }
+        }
+    }
+
+    // Throws IOException
+    fun exportSaveData(output: OutputStream) {
+        ZipOutputStream(output.buffered()).use { zip ->
+            for (path in File(rootDir, Launcher.SAVE_DIR).listFiles() ?: emptyArray()) {
+                if (path.isDirectory || path.name.endsWith(".asd."))
+                    continue
+                val pathInZip = "${Launcher.SAVE_DIR}/${path.name}"
+                Log.i("exportSaveData", pathInZip)
+                zip.putNextEntry(ZipEntry(pathInZip))
+                path.inputStream().buffered().use {
+                    it.copyTo(zip)
+                }
+            }
+        }
+    }
+
+    fun importSaveData(input: InputStream): Int? {
+        try {
+            var imported = false
+            forEachZipEntry(input) { zipEntry, zip ->
+                // Process only files directly under save/
+                if (zipEntry.isDirectory || !zipEntry.name.startsWith("save/") ||
+                        zipEntry.name.count{it == '/'} != 1)
+                    return@forEachZipEntry
+                val path = resolveOutputPath(rootDir, zipEntry.name).file
+                Log.i("importSaveData", zipEntry.name)
+                FileOutputStream(path).buffered().use {
+                    zip.copyTo(it)
+                }
+                imported = true
+            }
+            return if (imported) null else R.string.no_data_to_import
+        } catch (e: UTFDataFormatException) {
+            // Attempted to read Shift_JIS zip in Android < 7
+            return R.string.unsupported_zip
+        } catch (e: IOException) {
+            Log.e("launcher", "Failed to extract ZIP", e)
+            return R.string.zip_extraction_error
+        }
+    }
+
+    fun clearSaveData(): Boolean {
+        var success = true
+        File(rootDir, Launcher.SAVE_DIR).listFiles()?.forEach { file ->
+            if (!file.deleteRecursively()) success = false
+        }
+        return success
+    }
+
+    // Xsystem35-sdl2 2.3.0 - 2.11.1 used playlist2.txt. Rename it to playlist.txt.
+    private fun migratePlaylist(dir: File) {
+        val oldPlaylist = File(dir, Launcher.OLD_PLAYLIST_FILE)
+        if (oldPlaylist.exists()) {
+            oldPlaylist.renameTo(File(dir, Launcher.PLAYLIST_FILE))
+        }
+    }
+}
@@ -0,0 +1,175 @@
+/* Copyright (C) 2026 <KichikuouChrome@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+*/
+package io.github.kichikuou.xsystem35
+
+import java.io.InputStream
+import java.nio.charset.Charset
+import java.util.Locale
+
+internal class Iso9660FileSystem(private val image: CdImageReader) {
+    private val descriptor = readBestVolumeDescriptor()
+
+    data class Entry(
+        val name: String,
+        val extent: Int,
+        val size: Int,
+        val isDirectory: Boolean,
+    )
+
+    fun findGameDataDirectory(): Entry? {
+        return listDirectory(descriptor.rootDirectory).firstOrNull {
+            it.isDirectory && it.name.uppercase(Locale.US) == "GAMEDATA"
+        }
+    }
+
+    suspend fun extractDirectory(
+        directory: Entry,
+        outputPath: String,
+        writeFile: suspend (String, InputStream) -> Unit,
+    ) {
+        for (entry in listDirectory(directory)) {
+            val childPath = "$outputPath/${entry.name}"
+            if (entry.isDirectory) {
+                extractDirectory(entry, childPath, writeFile)
+            } else {
+                writeFile(childPath, fileInputStream(entry))
+            }
+        }
+    }
+
+    private fun listDirectory(directory: Entry): List<Entry> {
+        val bytes = ByteArray(directory.size)
+        image.readDataFully(
+            directory.extent.toLong() * CdImageReader.ISO_SECTOR_SIZE,
+            bytes,
+            0,
+            bytes.size
+        )
+        val entries = mutableListOf<Entry>()
+        var offset = 0
+        while (offset < bytes.size) {
+            val length = bytes[offset].toInt() and 0xff
+            if (length == 0) {
+                offset = ((offset / CdImageReader.ISO_SECTOR_SIZE) + 1) * CdImageReader.ISO_SECTOR_SIZE
+                continue
+            }
+            parseDirectoryRecord(bytes, offset, length)?.let { entries.add(it) }
+            offset += length
+        }
+        return entries
+    }
+
+    private fun parseDirectoryRecord(bytes: ByteArray, offset: Int, length: Int): Entry? {
+        if (length < 34) {
+            throw InstallFailureException(R.string.invalid_iso9660_image)
+        }
+        val nameLength = bytes[offset + 32].toInt() and 0xff
+        if (33 + nameLength > length) {
+            throw InstallFailureException(R.string.invalid_iso9660_image)
+        }
+        val rawName = bytes.copyOfRange(offset + 33, offset + 33 + nameLength)
+        if (rawName.size == 1 && (rawName[0].toInt() == 0 || rawName[0].toInt() == 1)) {
+            return null
+        }
+        val name = descriptor.decodeName(rawName)
+        val extent = readLittleEndianInt(bytes, offset + 2)
+        val size = readLittleEndianInt(bytes, offset + 10)
+        val flags = bytes[offset + 25].toInt() and 0xff
+        return Entry(name, extent, size, flags and 0x02 != 0)
+    }
+
+    private fun fileInputStream(entry: Entry): InputStream {
+        return object : InputStream() {
+            private var pos = 0
+
+            override fun read(): Int {
+                val buffer = ByteArray(1)
+                val read = read(buffer, 0, 1)
+                return if (read < 0) -1 else buffer[0].toInt() and 0xff
+            }
+
+            override fun read(buffer: ByteArray, offset: Int, length: Int): Int {
+                if (pos >= entry.size) {
+                    return -1
+                }
+                val count = minOf(length, entry.size - pos)
+                image.readDataFully(
+                    entry.extent.toLong() * CdImageReader.ISO_SECTOR_SIZE + pos,
+                    buffer,
+                    offset,
+                    count
+                )
+                pos += count
+                return count
+            }
+        }
+    }
+
+    private fun readBestVolumeDescriptor(): VolumeDescriptor {
+        var primary: VolumeDescriptor? = null
+        var joliet: VolumeDescriptor? = null
+        val sector = ByteArray(CdImageReader.ISO_SECTOR_SIZE)
+        var sectorNumber = 0x10
+        while (true) {
+            image.readSector(sectorNumber++, sector)
+            if (String(sector, 1, 5, Charsets.US_ASCII) != "CD001") {
+                throw InstallFailureException(R.string.invalid_iso9660_image)
+            }
+            when (sector[0].toInt() and 0xff) {
+                1 -> primary = VolumeDescriptor(parseRootDirectory(sector), false)
+                2 -> if (isJolietDescriptor(sector)) {
+                    joliet = VolumeDescriptor(parseRootDirectory(sector), true)
+                }
+                255 -> return joliet ?: primary
+                    ?: throw InstallFailureException(R.string.invalid_iso9660_image)
+            }
+        }
+    }
+
+    private fun parseRootDirectory(sector: ByteArray): Entry {
+        return Entry(
+            name = "",
+            extent = readLittleEndianInt(sector, 156 + 2),
+            size = readLittleEndianInt(sector, 156 + 10),
+            isDirectory = true,
+        )
+    }
+
+    private fun isJolietDescriptor(sector: ByteArray): Boolean {
+        return sector[88] == 0x25.toByte() &&
+            sector[89] == 0x2f.toByte() &&
+            (sector[90] == 0x40.toByte() || sector[90] == 0x43.toByte() || sector[90] == 0x45.toByte())
+    }
+
+    private data class VolumeDescriptor(
+        val rootDirectory: Entry,
+        val joliet: Boolean,
+    ) {
+        fun decodeName(rawName: ByteArray): String {
+            val charset = if (joliet) Charsets.UTF_16BE else Charset.forName("Shift_JIS")
+            return String(rawName, charset).substringBefore(";")
+        }
+    }
+}
+
+private fun readLittleEndianInt(bytes: ByteArray, offset: Int): Int {
+    return (bytes[offset].toInt() and 0xff) or
+        ((bytes[offset + 1].toInt() and 0xff) shl 8) or
+        ((bytes[offset + 2].toInt() and 0xff) shl 16) or
+        ((bytes[offset + 3].toInt() and 0xff) shl 24)
+}
@@ -17,18 +17,15 @@
 */
 package io.github.kichikuou.xsystem35

-import android.os.Build
+import android.content.ContentResolver
 import android.util.Log
-import kotlinx.coroutines.DelicateCoroutinesApi
+import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.SupervisorJob
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import java.io.*
-import java.nio.charset.Charset
-import java.util.zip.ZipEntry
-import java.util.zip.ZipInputStream
-import java.util.zip.ZipOutputStream

 private var gLauncher: Launcher? = null

@@ -39,7 +36,16 @@ interface LauncherObserver {
    fun onInstallFailure(msgId: Int)
 }

-class Launcher private constructor(private val rootDir: File) {
+sealed class InstallState {
+    object Idle : InstallState()
+    data class Installing(val progress: String?) : InstallState()
+    data class Succeeded(val path: File, val archiveName: String?) : InstallState()
+    data class Failed(val msgId: Int) : InstallState()
+}
+
+data class InstallResult(val path: File, val archiveName: String?)
+
+class Launcher private constructor(rootDir: File) {
    companion object {
        const val SAVE_DIR = "save"
        const val TITLE_FILE = "title.txt"
@@ -54,224 +60,118 @@ class Launcher private constructor(private val rootDir: File) {
            return gLauncher!!
        }

-        fun updateGameList() {
-            gLauncher?.updateGameList()
-        }
    }

-    data class Entry(val path: File, val title: String, val timestamp: Long)
-    val games = arrayListOf<Entry>()
+    private val store = GameStore(rootDir)
+    private val installer = GameInstaller(store)
+    val games: List<GameStore.Entry>
+        get() = store.games
    val titles: List<String>
-        get() = games.map(Entry::title)
+        get() = store.titles
    var observer: LauncherObserver? = null
-    var isInstalling = false
+    private val scope = CoroutineScope(SupervisorJob() + Dispatchers.Main)
+    private var installJob: Job? = null
+    var installState: InstallState = InstallState.Idle
        private set

-    init {
-        updateGameList()
-    }
-
-    @OptIn(DelicateCoroutinesApi::class)
-    fun install(input: InputStream, archiveName: String?) {
-        val dir = createDirForGame()
-        isInstalling = true
-        GlobalScope.launch(Dispatchers.Main) {
-            try {
-                val gameDir = withContext(Dispatchers.IO) {
-                    extractFiles(input, dir) { msg ->
-                        GlobalScope.launch(Dispatchers.Main) {
-                            observer?.onInstallProgress(msg)
+    fun installZip(input: InputStream, archiveName: String?) {
+        if (installJob?.isActive == true) {
+            input.close()
+            return
+        }
+        startInstallJob {
+            val gameDir = withContext(Dispatchers.IO) {
+                input.use {
+                    installer.installZip(it) { msg ->
+                        withContext(Dispatchers.Main) {
+                            setInstallProgress(msg)
                        }
                    }
                }
-                observer?.onInstallSuccess(gameDir, archiveName)
-            } catch (e: InstallFailureException) {
-                observer?.onInstallFailure(e.msgId)
-            } catch (e: Exception) {
-                Log.e("launcher", "Failed to extract ZIP", e)
-                observer?.onInstallFailure(R.string.zip_extraction_error)
            }
-            isInstalling = false
+            InstallResult(gameDir, archiveName)
        }
    }

+    fun installCdImage(
+        files: List<SelectedInstallFile>,
+        contentResolver: ContentResolver,
+        tempDir: File,
+    ) {
+        if (installJob?.isActive == true) {
+            return
+        }
+        startInstallJob {
+            val gameDir = withContext(Dispatchers.IO) {
+                installer.installCdImage(files, contentResolver, tempDir) { msg ->
+                    withContext(Dispatchers.Main) {
+                        setInstallProgress(msg)
+                    }
+                }
+            }
+            InstallResult(gameDir, null)
+        }
+    }
+
+    private fun startInstallJob(block: suspend () -> InstallResult) {
+        if (installJob?.isActive == true) {
+            return
+        }
+        installState = InstallState.Installing(null)
+        installJob = scope.launch {
+            try {
+                val result = block()
+                setInstallSucceeded(result)
+            } catch (e: InstallFailureException) {
+                setInstallFailed(e.msgId)
+            } catch (e: Exception) {
+                Log.e("launcher", "Failed to install game", e)
+                setInstallFailed(R.string.install_error)
+            }
+        }
+    }
+
+    fun consumeInstallResult() {
+        if (installState is InstallState.Succeeded || installState is InstallState.Failed) {
+            installState = InstallState.Idle
+        }
+    }
+
+    private fun setInstallProgress(progress: String) {
+        installState = InstallState.Installing(progress)
+        observer?.onInstallProgress(progress)
+    }
+
+    private fun setInstallSucceeded(result: InstallResult) {
+        installState = InstallState.Succeeded(result.path, result.archiveName)
+        observer?.onInstallSuccess(result.path, result.archiveName)
+    }
+
+    private fun setInstallFailed(msgId: Int) {
+        installState = InstallState.Failed(msgId)
+        observer?.onInstallFailure(msgId)
+    }
+
    fun uninstall(id: Int) {
-        games[id].path.deleteRecursively()
-        games.removeAt(id)
+        store.uninstall(id)
        observer?.onGameListChange()
    }

-    private fun updateGameList() {
-        var saveDirFound = false
-        games.clear()
-        for (path in rootDir.listFiles() ?: emptyArray()) {
-            if (!path.isDirectory)
-                continue
-            if (path.name == SAVE_DIR) {
-                saveDirFound = true
-                continue
-            }
-            try {
-                val gameDirFile = File(path, GAMEDIR_FILE)
-                val gamePath = if (gameDirFile.exists()) File(path, gameDirFile.readText()) else path
-                val titleFile = File(gamePath, TITLE_FILE)
-                val title = titleFile.readText()
-                games.add(Entry(gamePath, title, titleFile.lastModified()))
-                migratePlaylist(path)
-            } catch (e: IOException) {
-                // Incomplete game installation. Delete it.
-                path.deleteRecursively()
-            }
-        }
-        games.sortByDescending(Entry::timestamp)
-        if (!saveDirFound) {
-            File(rootDir, SAVE_DIR).mkdir()
-        }
-    }
-
-    private fun createDirForGame(): File {
-        var i = 0
-        while (true) {
-            val f = File(rootDir, i++.toString())
-            if (!f.exists() && f.mkdir()) {
-                return f
-            }
-        }
+    fun refreshGameList() {
+        store.updateGameList()
+        observer?.onGameListChange()
    }

    // Throws IOException
    fun exportSaveData(output: OutputStream) {
-        ZipOutputStream(output.buffered()).use { zip ->
-            for (path in File(rootDir, SAVE_DIR).listFiles() ?: emptyArray()) {
-                if (path.isDirectory || path.name.endsWith(".asd."))
-                    continue
-                val pathInZip = "${SAVE_DIR}/${path.name}"
-                Log.i("exportSaveData", pathInZip)
-                zip.putNextEntry(ZipEntry(pathInZip))
-                path.inputStream().buffered().use {
-                    it.copyTo(zip)
-                }
-            }
-        }
+        store.exportSaveData(output)
    }

    fun importSaveData(input: InputStream): Int? {
-        try {
-            var imported = false
-            forEachZipEntry(input) { zipEntry, zip ->
-                // Process only files directly under save/
-                if (zipEntry.isDirectory || !zipEntry.name.startsWith("save/") ||
-                        zipEntry.name.count{it == '/'} != 1)
-                    return@forEachZipEntry
-                Log.i("importSaveData", zipEntry.name)
-                FileOutputStream(File(rootDir, zipEntry.name)).buffered().use {
-                    zip.copyTo(it)
-                }
-                imported = true
-            }
-            return if (imported) null else R.string.no_data_to_import
-        } catch (e: UTFDataFormatException) {
-            // Attempted to read Shift_JIS zip in Android < 7
-            return R.string.unsupported_zip
-        } catch (e: IOException) {
-            Log.e("launcher", "Failed to extract ZIP", e)
-            return R.string.zip_extraction_error
-        }
+        return store.importSaveData(input)
    }

-    private fun extractFiles(input: InputStream, outDir: File, progressCallback: (String) -> Unit): File {
-        val configWriter = GameConfigWriter()
-        val hadDecodeError = forEachZipEntry(input) { zipEntry, zip ->
-            Log.i("extractFiles", zipEntry.name)
-            val path = File(outDir, zipEntry.name)
-            if (zipEntry.isDirectory)
-                return@forEachZipEntry
-            path.parentFile?.mkdirs()
-            progressCallback(zipEntry.name)
-            FileOutputStream(path).buffered().use {
-                zip.copyTo(it)
-            }
-            configWriter.maybeAdd(zipEntry.name)
-        }
-        if (!configWriter.ready) {
-            if (hadDecodeError)
-                throw InstallFailureException(R.string.unsupported_zip)
-            throw InstallFailureException(R.string.cannot_find_ald)
-        }
-        configWriter.write(outDir)
-        return configWriter.gameDir?.let { File(outDir, it) } ?: outDir
-    }
-
-    // Xsystem35-sdl2 2.3.0 - 2.11.1 used playlist2.txt. Rename it to playlist.txt.
-    private fun migratePlaylist(dir: File) {
-        val oldPlaylist = File(dir, OLD_PLAYLIST_FILE)
-        if (oldPlaylist.exists()) {
-            oldPlaylist.renameTo(File(dir, PLAYLIST_FILE))
-        }
-    }
-
-    class InstallFailureException(val msgId: Int) : Exception()
-
-    // A helper class which generates GAMEDIR_FILE and PLAYLIST_FILE.
-    private class GameConfigWriter {
-        var ready = false
-            private set
-        var gameDir: String? = null
-            private set
-        private val aldRegex = """.*?s[a-z]\.ald""".toRegex(RegexOption.IGNORE_CASE)
-        private val audioRegex = """.*?(\d+)\.(wav|mp3|ogg)""".toRegex(RegexOption.IGNORE_CASE)
-        private val audioFiles: Array<String?> = arrayOfNulls(100)
-
-        fun maybeAdd(path: String) {
-            aldRegex.matchEntire(path)?.let {
-                gameDir = File(path).parent
-                ready = true
-            }
-            audioRegex.matchEntire(path)?.let {
-                val track = it.groupValues[1].toInt()
-                if (0 < track && track <= audioFiles.size)
-                    audioFiles[track - 1] = path
-            }
-        }
-
-        fun write(outDir: File) {
-            // Generate GAMEDIR_FILE
-            gameDir?.let {
-                File(outDir, GAMEDIR_FILE).writeText(it)
-            }
-            // Generate PLAYLIST_FILE
-            val absGameDir = gameDir?.let { File(outDir, it) } ?: outDir
-            val playlistFile = File(absGameDir, PLAYLIST_FILE)
-            if (!playlistFile.exists()) {
-                val prefixToRemove = gameDir?.let { "$it/" } ?: ""
-                val playlist = audioFiles.joinToString("\n") {
-                    it?.removePrefix(prefixToRemove) ?: ""
-                }.trimEnd('\n')
-                playlistFile.writeText(playlist)
-            }
-        }
+    fun clearSaveData(): Boolean {
+        return store.clearSaveData()
    }
 }
-
-private fun forEachZipEntry(input: InputStream, action: (ZipEntry, ZipInputStream) -> Unit): Boolean {
-    val zip = if (Build.VERSION.SDK_INT >= 24) {
-        ZipInputStream(input.buffered(), Charset.forName("Shift_JIS"))
-    } else {
-        ZipInputStream(input.buffered())
-    }
-    var hadDecodeError = false
-    zip.use {
-        while (true) {
-            try {
-                val zipEntry = zip.nextEntry ?: break
-                action(zipEntry, zip)
-            } catch (e: UTFDataFormatException) {
-                // Attempted to read Shift_JIS zip in Android < 7
-                Log.w("forEachZipEntry", "UTFDataFormatException: skipping a zip entry")
-                zip.closeEntry()
-                hadDecodeError = true
-            }
-        }
-    }
-    return hadDecodeError
-}
@@ -22,6 +22,7 @@ import android.content.Intent
 import android.net.Uri
 import android.os.Bundle
 import android.provider.OpenableColumns
+import android.text.Html
 import android.util.Log
 import android.view.Menu
 import android.view.MenuItem
@@ -32,10 +33,10 @@ import android.widget.Toast
 import java.io.*

 private const val CONTENT_TYPE_ZIP = "application/zip"
-private const val INSTALL_REQUEST = 1
+private const val ZIP_INSTALL_REQUEST = 1
 private const val SAVEDATA_EXPORT_REQUEST = 2
 private const val SAVEDATA_IMPORT_REQUEST = 3
-private const val STATE_PROGRESS_TEXT = "progressText"
+private const val CD_IMAGE_INSTALL_REQUEST = 4

 class LauncherActivity : Activity(), LauncherObserver {
    private lateinit var launcher: Launcher
@@ -47,12 +48,12 @@ class LauncherActivity : Activity(), LauncherObserver {

        launcher = Launcher.getInstance(filesDir)
        launcher.observer = this
-        if (launcher.isInstalling) {
-            showProgressDialog(savedInstanceState)
-        }
+        renderInstallState(launcher.installState)

        onGameListChange()
        val listView = findViewById<ListView>(R.id.list)
+        listView.emptyView = findViewById(R.id.empty)
+        findViewById<TextView>(R.id.usage).text = Html.fromHtml(getString(R.string.usage))
        listView.setOnItemClickListener { _, _, position, _ ->
            onListItemClick(position)
        }
@@ -67,31 +68,21 @@ class LauncherActivity : Activity(), LauncherObserver {
        super.onDestroy()
    }

-    override fun onSaveInstanceState(outState: Bundle) {
-        progressDialog?.let {
-            outState.putCharSequence(STATE_PROGRESS_TEXT, it.findViewById<TextView>(R.id.text).text)
-        }
-        super.onSaveInstanceState(outState)
+    override fun onResume() {
+        super.onResume()
+        launcher.refreshGameList()
    }

    private fun onListItemClick(position: Int) {
-        if (position < launcher.games.size) {
-            startGame(launcher.games[position].path, null)
-        } else {
-            val i = Intent(Intent.ACTION_GET_CONTENT)
-            i.type = CONTENT_TYPE_ZIP
-            startActivityForResult(Intent.createChooser(i, getString(R.string.choose_a_file)), INSTALL_REQUEST)
-        }
+        startGame(launcher.games[position].path, null)
    }

    private fun onItemLongClick(position: Int): Boolean {
-        if (position < launcher.games.size) {
-            AlertDialog.Builder(this).setTitle(R.string.uninstall_dialog_title)
-                    .setMessage(getString(R.string.uninstall_dialog_message, launcher.games[position].title))
-                    .setPositiveButton(R.string.ok) {_, _ -> uninstall(position)}
-                    .setNegativeButton(R.string.cancel) {_, _ -> }
-                    .show()
-        }
+        AlertDialog.Builder(this).setTitle(R.string.confirm)
+                .setMessage(getString(R.string.uninstall_dialog_message, launcher.games[position].title))
+                .setPositiveButton(R.string.ok) {_, _ -> uninstall(position)}
+                .setNegativeButton(R.string.cancel) {_, _ -> }
+                .show()
        return true
    }

@@ -102,6 +93,20 @@ class LauncherActivity : Activity(), LauncherObserver {

    override fun onOptionsItemSelected(item: MenuItem): Boolean {
        return when (item.itemId) {
+            R.id.install_from_zip -> {
+                val i = Intent(Intent.ACTION_GET_CONTENT)
+                i.type = CONTENT_TYPE_ZIP
+                startActivityForResult(Intent.createChooser(i, getString(R.string.choose_a_file)), ZIP_INSTALL_REQUEST)
+                true
+            }
+            R.id.install_from_cd_image -> {
+                val i = Intent(Intent.ACTION_GET_CONTENT)
+                i.type = "*/*"
+                i.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true)
+                startActivityForResult(Intent.createChooser(i, getString(R.string.choose_cd_image_files)),
+                    CD_IMAGE_INSTALL_REQUEST)
+                true
+            }
            R.id.export_savedata -> {
                val i = Intent(Intent.ACTION_CREATE_DOCUMENT)
                i.type = CONTENT_TYPE_ZIP
@@ -116,6 +121,27 @@ class LauncherActivity : Activity(), LauncherObserver {
                                       SAVEDATA_IMPORT_REQUEST)
                true
            }
+            R.id.clear_savedata -> {
+                AlertDialog.Builder(this)
+                    .setTitle(R.string.confirm)
+                    .setMessage(R.string.clear_save_data_confirm)
+                    .setPositiveButton(R.string.ok) { _, _ ->
+                        if (launcher.clearSaveData()) {
+                            Toast.makeText(this, R.string.save_data_clear_success, Toast.LENGTH_SHORT).show()
+                        } else {
+                            errorDialog(R.string.save_data_clear_error)
+                        }
+                    }
+                    .setNegativeButton(R.string.cancel, null)
+                    .show()
+                true
+            }
+            R.id.help -> {
+                AlertDialog.Builder(this)
+                    .setMessage(Html.fromHtml(getString(R.string.usage)))
+                    .show()
+                true
+            }
            R.id.licenses -> {
                val intent = Intent(this, LicensesMenuActivity::class.java)
                startActivity(intent)
@@ -128,14 +154,20 @@ class LauncherActivity : Activity(), LauncherObserver {
    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        if (resultCode != RESULT_OK)
            return
-        val uri = data?.data ?: return
        when (requestCode) {
-            INSTALL_REQUEST -> {
+            ZIP_INSTALL_REQUEST -> {
+                val uri = data?.data ?: return
                val input = contentResolver.openInputStream(uri) ?: return
-                showProgressDialog()
-                launcher.install(input, getArchiveName(uri))
+                launcher.installZip(input, getArchiveName(uri))
+                renderInstallState(launcher.installState)
+            }
+            CD_IMAGE_INSTALL_REQUEST -> {
+                val files = getSelectedInstallFiles(data)
+                launcher.installCdImage(files, contentResolver, cacheDir)
+                renderInstallState(launcher.installState)
            }
            SAVEDATA_EXPORT_REQUEST -> try {
+                val uri = data?.data ?: return
                launcher.exportSaveData(contentResolver.openOutputStream(uri)!!)
                Toast.makeText(this, R.string.save_data_export_success, Toast.LENGTH_SHORT).show()
            } catch (e: IOException) {
@@ -143,6 +175,7 @@ class LauncherActivity : Activity(), LauncherObserver {
                errorDialog(R.string.save_data_export_error)
            }
            SAVEDATA_IMPORT_REQUEST -> {
+                val uri = data?.data ?: return
                val input = contentResolver.openInputStream(uri) ?: return
                val errMsgId = launcher.importSaveData(input)
                if (errMsgId == null) {
@@ -157,23 +190,20 @@ class LauncherActivity : Activity(), LauncherObserver {

    override fun onGameListChange() {
        val items = launcher.titles.toMutableList()
-        items.add(getString(R.string.install_from_zip))
        val listView = findViewById<ListView>(R.id.list)
        listView.adapter = ArrayAdapter(this, android.R.layout.simple_list_item_1, items)
    }

    override fun onInstallProgress(path: String) {
-        progressDialog?.findViewById<TextView>(R.id.text)?.text = getString(R.string.install_progress, path)
+        renderInstallState(launcher.installState)
    }

    override fun onInstallSuccess(path: File, archiveName: String?) {
-        dismissProgressDialog()
-        startGame(path, archiveName)
+        renderInstallState(launcher.installState)
    }

    override fun onInstallFailure(msgId: Int) {
-        dismissProgressDialog()
-        errorDialog(msgId)
+        renderInstallState(launcher.installState)
    }

    private fun startGame(path: File, archiveName: String?) {
@@ -189,16 +219,35 @@ class LauncherActivity : Activity(), LauncherObserver {
        launcher.uninstall(id)
    }

-    private fun showProgressDialog(savedInstanceState: Bundle? = null) {
-        progressDialog = Dialog(this)
-        progressDialog!!.apply {
-            setTitle(R.string.install_dialog_title)
-            setCancelable(false)
-            setContentView(R.layout.progress_dialog)
-            savedInstanceState?.let {
-                findViewById<TextView>(R.id.text)?.text = it.getCharSequence(STATE_PROGRESS_TEXT)
+    private fun renderInstallState(state: InstallState) {
+        when (state) {
+            InstallState.Idle -> dismissProgressDialog()
+            is InstallState.Installing -> showProgressDialog(state.progress)
+            is InstallState.Succeeded -> {
+                dismissProgressDialog()
+                startGame(state.path, state.archiveName)
+                launcher.consumeInstallResult()
            }
-            show()
+            is InstallState.Failed -> {
+                dismissProgressDialog()
+                errorDialog(state.msgId)
+                launcher.consumeInstallResult()
+            }
+        }
+    }
+
+    private fun showProgressDialog(progress: String? = null) {
+        if (progressDialog == null) {
+            progressDialog = Dialog(this)
+            progressDialog!!.apply {
+                setTitle(R.string.install_dialog_title)
+                setCancelable(false)
+                setContentView(R.layout.progress_dialog)
+                show()
+            }
+        }
+        progress?.let {
+            progressDialog?.findViewById<TextView>(R.id.text)?.text = getString(R.string.install_progress, it)
        }
    }

@@ -215,13 +264,33 @@ class LauncherActivity : Activity(), LauncherObserver {
    }

    private fun getArchiveName(uri: Uri): String? {
+        val fname = getDisplayName(uri) ?: return null
+        return if (fname.endsWith(".zip", true)) fname.dropLast(4) else fname
+    }
+
+    private fun getSelectedInstallFiles(data: Intent?): List<SelectedInstallFile> {
+        val files = mutableListOf<SelectedInstallFile>()
+        val clipData = data?.clipData
+        if (clipData != null) {
+            for (i in 0 until clipData.itemCount) {
+                val uri = clipData.getItemAt(i).uri
+                files.add(SelectedInstallFile(uri, getDisplayName(uri) ?: uri.lastPathSegment ?: ""))
+            }
+        } else {
+            data?.data?.let { uri ->
+                files.add(SelectedInstallFile(uri, getDisplayName(uri) ?: uri.lastPathSegment ?: ""))
+            }
+        }
+        return files
+    }
+
+    private fun getDisplayName(uri: Uri): String? {
        val cursor = contentResolver.query(uri, null, null, null, null, null)
        cursor?.use {
            if (it.moveToFirst()) {
                val column = it.getColumnIndex(OpenableColumns.DISPLAY_NAME)
                if (column >= 0) {
-                    val fname = it.getString(column)
-                    return if (fname.endsWith(".zip", true)) fname.dropLast(4) else fname
+                    return it.getString(column)
                }
            }
        }
@@ -13,10 +13,12 @@ class LicensesMenuActivity : Activity() {
        Entry("SDL", "SDL", "https://www.libsdl.org/"),
        Entry("SDL_mixer", "SDL_mixer", "https://github.com/libsdl-org/SDL_mixer"),
        Entry("SDL_ttf", "SDL_ttf", "https://github.com/libsdl-org/SDL_ttf"),
+        Entry("NanoJPEG", "nanojpeg", "https://keyj.emphy.de/nanojpeg/"),
+        Entry("microui", "microui", "https://github.com/rxi/microui"),
        Entry("FreeType", "freetype", "https://freetype.org/"),
        Entry("HarfBuzz", "harfbuzz", "https://harfbuzz.github.io/"),
        Entry("MotoyaLCedar W3 mono", "MTLc3m", "https://github.com/aosp-mirror/platform_frameworks_base/tree/lollipop-release/data/fonts"),
-        Entry("Source Han Serif", "mincho", "https://github.com/adobe-fonts/source-han-serif/"),
+        Entry("IPA明朝", "mincho", "https://moji.or.jp/ipafont/"),
    )

    override fun onCreate(savedInstanceState: Bundle?) {
@@ -60,8 +60,8 @@ import java.util.Locale;
 public class SDLActivity extends Activity implements View.OnSystemUiVisibilityChangeListener {
    private static final String TAG = "SDL";
    private static final int SDL_MAJOR_VERSION = 2;
-    private static final int SDL_MINOR_VERSION = 30;
-    private static final int SDL_MICRO_VERSION = 9;
+    private static final int SDL_MINOR_VERSION = 32;
+    private static final int SDL_MICRO_VERSION = 10;
 /*
    // Display InputType.SOURCE/CLASS of events and devices
    //
@@ -790,6 +790,9 @@ public class SDLActivity extends Activity implements View.OnSystemUiVisibilityCh
                                window.clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
                                SDLActivity.mFullscreenModeActive = false;
                            }
+                            if (Build.VERSION.SDK_INT >= 28 /* Android 9 (Pie) */) {
+                                window.getAttributes().layoutInDisplayCutoutMode = WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES;
+                            }
                        }
                    } else {
                        Log.e(TAG, "error handling message, getContext() returned no Activity");
@@ -6,4 +6,12 @@
    <ListView android:id="@+id/list"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
+    <ScrollView android:id="@+id/empty"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+        <TextView android:id="@+id/usage"
+            android:layout_width="fill_parent"
+            android:layout_height="wrap_content"
+            android:padding="20dp" />
+    </ScrollView>
 </LinearLayout>
@@ -1,12 +1,24 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android">
+    <item
+        android:id="@+id/install_from_zip"
+        android:title="@string/action_install_from_zip" />
+    <item
+        android:id="@+id/install_from_cd_image"
+        android:title="@string/action_install_from_cd_image" />
    <item
        android:id="@+id/export_savedata"
        android:title="@string/action_export_save_data" />
    <item
        android:id="@+id/import_savedata"
        android:title="@string/action_import_save_data" />
+    <item
+        android:id="@+id/clear_savedata"
+        android:title="@string/action_clear_save_data" />
+    <item
+        android:id="@+id/help"
+        android:title="@string/action_help" />
    <item
        android:id="@+id/licenses"
        android:title="@string/action_licenses" />
-</menu>
+</menu>
@@ -2,21 +2,51 @@
 <resources>
    <string name="app_name">xsystem35</string>
    <string name="action_export_save_data">セーブデータをエクスポート</string>
+    <string name="action_help">使い方</string>
    <string name="action_import_save_data">セーブデータをインポート</string>
+    <string name="action_install_from_cd_image">CDイメージからインストール</string>
+    <string name="action_install_from_zip">ZIPからインストール</string>
    <string name="action_licenses">オープンソースライセンス</string>
+    <string name="action_clear_save_data">セーブデータをクリア</string>
    <string name="cancel">キャンセル</string>
    <string name="cannot_find_ald">System 3.x のファイル (*.ald) が見つかりません。</string>
+    <string name="cannot_find_game_data_directory">CDイメージ内に GAMEDATA ディレクトリが見つかりません。</string>
+    <string name="cd_image_read_error">選択された CD イメージファイルを読み取れません。</string>
    <string name="choose_a_file">ファイルを選択</string>
+    <string name="choose_cd_image_files">CDイメージファイルを選択</string>
+    <string name="clear_save_data_confirm">セーブデータをすべて削除します。元には戻せません。本当によろしいですか？</string>
+    <string name="confirm">確認</string>
    <string name="error_dialog_title">エラー</string>
    <string name="install_dialog_title">インストール中…</string>
-    <string name="install_from_zip">ZIP からインストール</string>
+    <string name="install_error">ゲームのインストールに失敗しました。</string>
    <string name="install_progress">%s を展開中</string>
+    <string name="invalid_iso9660_image">有効な ISO9660 イメージではありません。</string>
+    <string name="missing_cd_image_metadata">CD イメージファイルと対応するメタデータファイルを一緒に選択してください。ファイル選択画面ではファイルを長押しすると複数選択モードに入れます。</string>
    <string name="no_data_to_import">ZIP アーカイブ中に save/ フォルダが見つかりません。</string>
    <string name="save_data_export_error">セーブデータのエクスポートに失敗しました。</string>
    <string name="save_data_export_success">エクスポートに成功しました。</string>
    <string name="save_data_import_success">インポートに成功しました。</string>
+    <string name="save_data_clear_success">セーブデータをクリアしました。</string>
+    <string name="save_data_clear_error">セーブデータのクリアに失敗しました。</string>
    <string name="uninstall_dialog_message">「%s」をアンインストールしますか？</string>
-    <string name="uninstall_dialog_title">確認</string>
+    <string name="unsupported_cd_image">この CD イメージ形式にはまだ対応していません。現在は .iso、.bin/.img + .cue/.ccd、.mdf/.mds に対応しています。</string>
    <string name="unsupported_zip">この形式の ZIP はサポートしていません。</string>
    <string name="zip_extraction_error">ZIP の展開に失敗しました。</string>
-</resources>
+    <string name="usage">
+        <![CDATA[
+            <h1>ゲームのインストール方法</h1>
+            <p>1. PC上で、ゲームのファイルが入ったZIPを用意します。例えば以下のようなファイルを含めます:</p>
+            <div>
+                ・鬼畜王SA.ALD<br>
+                ・鬼畜王GA.ALD<br>
+                ・鬼畜王GB.ALD<br>
+                ・鬼畜王WA.ALD<br>
+                ・02.mp3<br>
+                ・03.mp3<br>
+                ・…<br>
+            </div>
+            <p>2. ZIPファイルを (例えばUSB経由で) PCからデバイスに転送します。</p>
+            <p>3. この画面の右上のメニューボタンをタップして「ZIPからインストール」を選択し、転送したZIPを選びます。</p>
+        ]]>
+    </string>
+</resources>
@@ -1,22 +1,53 @@
 <resources>
    <string name="app_name">xsystem35</string>
+    <string name="action_clear_save_data">Clear Save Files</string>
    <string name="action_export_save_data">Export Save Files</string>
+    <string name="action_help">Help</string>
    <string name="action_import_save_data">Import Save Files</string>
+    <string name="action_install_from_cd_image">Install from CD image</string>
+    <string name="action_install_from_zip">Install from ZIP</string>
    <string name="action_licenses">Open source licenses</string>
    <string name="cancel">Cancel</string>
    <string name="cannot_find_ald">Cannot find System 3.x game files (*.ald).</string>
+    <string name="cannot_find_game_data_directory">Cannot find GAMEDATA directory in the CD image.</string>
+    <string name="cd_image_read_error">Cannot read the selected CD image file.</string>
    <string name="choose_a_file">Choose a file</string>
+    <string name="choose_cd_image_files">Choose CD image files</string>
+    <string name="clear_save_data_confirm">Are you sure you want to clear all save files? This cannot be undone.</string>
+    <string name="confirm">Confirm</string>
    <string name="error_dialog_title">Error</string>
    <string name="install_dialog_title">Installing…</string>
-    <string name="install_from_zip">Install from ZIP</string>
+    <string name="install_error">Failed to install game.</string>
    <string name="install_progress">Extracting %s</string>
+    <string name="invalid_iso9660_image">This file is not a valid ISO9660 image.</string>
+    <string name="missing_cd_image_metadata">Select a matching metadata file with the CD image file. In the file picker, long-press a file to enter multi-select mode.</string>
    <string name="no_data_to_import">No save/ folder in the ZIP archive.</string>
    <string name="ok">OK</string>
+    <string name="save_data_clear_error">Failed to clear save files.</string>
+    <string name="save_data_clear_success">Save files cleared.</string>
    <string name="save_data_export_error">Failed to export save files.</string>
    <string name="save_data_import_success">Imported successfully.</string>
    <string name="save_data_export_success">Exported successfully.</string>
    <string name="uninstall_dialog_message">Uninstall \"%s\"?</string>
-    <string name="uninstall_dialog_title">Confirm</string>
+    <string name="unsupported_cd_image">This CD image format is not supported yet. Currently only .iso, .bin/.img + .cue/.ccd, and .mdf/.mds are supported.</string>
    <string name="unsupported_zip">This type of ZIP is not supported.</string>
    <string name="zip_extraction_error">Failed to extract ZIP.</string>
+    <string name="usage">
+        <![CDATA[
+            <h1>How to install a game</h1>
+            <p>1. On your PC, prepare a ZIP containing the game files. For example, it should contain the following files:</p>
+            <div>
+                * KICHIKUSA.ALD<br>
+                * KICHIKUGA.ALD<br>
+                * KICHIKUGB.ALD<br>
+                * KICHIKUWA.ALD<br>
+                * System39.ain<br>
+                * 02.mp3<br>
+                * 03.mp3<br>
+                * …<br>
+            </div>
+            <p>2. Transfer the ZIP file from your PC to the device (e.g. via USB).</p>
+            <p>3. Tap the menu button at the upper-right of this screen, select &quot;Install from ZIP,&quot; and choose the ZIP you transferred.</p>
+        ]]>
+    </string>
 </resources>
@@ -0,0 +1,714 @@
+/* Copyright (C) 2026 <KichikuouChrome@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+*/
+package io.github.kichikuou.xsystem35
+
+import kotlinx.coroutines.runBlocking
+import org.junit.Assert.assertArrayEquals
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Assert.fail
+import org.junit.Rule
+import org.junit.Test
+import org.junit.rules.TemporaryFolder
+import java.io.ByteArrayOutputStream
+import java.io.File
+import java.nio.charset.Charset
+
+class Iso9660FileSystemTest {
+    @get:Rule
+    val tmp = TemporaryFolder()
+
+    @Test
+    fun extractsGameDataDirectoryFromPrimaryDescriptor() = runBlocking {
+        val iso = SyntheticIsoBuilder()
+            .addGameDataFile("SA.ALD;1", "ald".toByteArray())
+            .addGameDataFile("SUB/FILE.TXT;1", "text".toByteArray())
+            .writeTo(tmp.newFile("game.iso"))
+
+        CdImageReader.openForFile(iso).use { reader ->
+            val fs = Iso9660FileSystem(reader)
+            val gameData = fs.findGameDataDirectory()
+                ?: throw AssertionError("GAMEDATA directory was not found")
+            val extracted = mutableMapOf<String, ByteArray>()
+
+            fs.extractDirectory(gameData, "GAMEDATA") { path, input ->
+                extracted[path] = input.readBytes()
+            }
+
+            assertArrayEquals("ald".toByteArray(), extracted["GAMEDATA/SA.ALD"])
+            assertArrayEquals("text".toByteArray(), extracted["GAMEDATA/SUB/FILE.TXT"])
+        }
+    }
+
+    @Test
+    fun decodesPrimaryDescriptorNamesAsShiftJis() = runBlocking {
+        val name = "表.TXT;1"
+        val iso = SyntheticIsoBuilder()
+            .addGameDataFile(name, "sjis".toByteArray())
+            .writeTo(tmp.newFile("sjis.iso"))
+
+        CdImageReader.openForFile(iso).use { reader ->
+            val fs = Iso9660FileSystem(reader)
+            val gameData = fs.findGameDataDirectory()
+                ?: throw AssertionError("GAMEDATA directory was not found")
+            val extracted = mutableMapOf<String, ByteArray>()
+
+            fs.extractDirectory(gameData, "GAMEDATA") { path, input ->
+                extracted[path] = input.readBytes()
+            }
+
+            assertArrayEquals("sjis".toByteArray(), extracted["GAMEDATA/表.TXT"])
+        }
+    }
+
+    @Test
+    fun prefersJolietDescriptorOverPrimaryDescriptor() = runBlocking {
+        val iso = SyntheticIsoBuilder()
+            .addGameDataFile("PRIMARY.TXT;1", "primary".toByteArray())
+            .addJolietGameDataFile("日本語.TXT;1", "joliet".toByteArray())
+            .writeTo(tmp.newFile("joliet.iso"))
+
+        CdImageReader.openForFile(iso).use { reader ->
+            val fs = Iso9660FileSystem(reader)
+            val gameData = fs.findGameDataDirectory()
+                ?: throw AssertionError("GAMEDATA directory was not found")
+            val extracted = mutableMapOf<String, ByteArray>()
+
+            fs.extractDirectory(gameData, "GAMEDATA") { path, input ->
+                extracted[path] = input.readBytes()
+            }
+
+            assertFalse(extracted.containsKey("GAMEDATA/PRIMARY.TXT"))
+            assertArrayEquals("joliet".toByteArray(), extracted["GAMEDATA/日本語.TXT"])
+        }
+    }
+
+    @Test
+    fun rejectsInvalidVolumeDescriptorSignature() {
+        val iso = tmp.newFile("invalid.iso")
+        iso.writeBytes(ByteArray(18 * CdImageReader.ISO_SECTOR_SIZE))
+
+        val e = assertInstallFailure(R.string.invalid_iso9660_image) {
+            CdImageReader.openForFile(iso).use { Iso9660FileSystem(it) }
+        }
+        assertEquals(R.string.invalid_iso9660_image, e.msgId)
+    }
+}
+
+class CdImageReaderTest {
+    @get:Rule
+    val tmp = TemporaryFolder()
+
+    @Test
+    fun readsIsoSectorAt2048ByteOffset() {
+        val sector0 = sectorFilledWith(0x10)
+        val sector1 = sectorFilledWith(0x20)
+        val image = tmp.newFile("plain.iso")
+        image.writeBytes(sector0 + sector1)
+
+        CdImageReader.openForFile(image).use { reader ->
+            val buffer = ByteArray(CdImageReader.ISO_SECTOR_SIZE)
+
+            reader.readSector(1, buffer)
+
+            assertArrayEquals(sector1, buffer)
+            assertTrue(reader.audioTracks().isEmpty())
+        }
+    }
+
+    @Test
+    fun cueMode12048ReadsDataSector() {
+        val payload = sectorFilledWith(0x31)
+        val image = tmp.newFile("mode2048.bin")
+        image.writeBytes(payload)
+
+        CdImageReader.openForFile(image, "mode2048.cue", cue("MODE1/2048").toByteArray()).use { reader ->
+            val buffer = ByteArray(CdImageReader.ISO_SECTOR_SIZE)
+
+            reader.readSector(0, buffer)
+
+            assertArrayEquals(payload, buffer)
+        }
+    }
+
+    @Test
+    fun cueMode12352ReadsPayloadAtOffset16() {
+        val payload = sectorFilledWith(0x42)
+        val image = tmp.newFile("mode2352.bin")
+        image.writeBytes(rawDataSector(payload, 0x11))
+
+        CdImageReader.openForFile(image, "mode2352.cue", cue("MODE1/2352").toByteArray()).use { reader ->
+            val buffer = ByteArray(CdImageReader.ISO_SECTOR_SIZE)
+
+            reader.readSector(0, buffer)
+
+            assertArrayEquals(payload, buffer)
+        }
+    }
+
+    @Test
+    fun cuePregapAdvancesDataTrackStart() {
+        val pregapPayload = sectorFilledWith(0x21)
+        val dataPayload = sectorFilledWith(0x22)
+        val image = tmp.newFile("pregap.bin")
+        image.writeBytes(rawDataSector(pregapPayload, 0x01) + rawDataSector(dataPayload, 0x02))
+        val metadata = """
+            FILE "pregap.bin" BINARY
+              TRACK 01 MODE1/2352
+                INDEX 00 00:00:00
+                INDEX 01 00:00:01
+        """.trimIndent()
+
+        CdImageReader.openForFile(image, "pregap.cue", metadata.toByteArray()).use { reader ->
+            val buffer = ByteArray(CdImageReader.ISO_SECTOR_SIZE)
+
+            reader.readSector(1, buffer)
+
+            assertArrayEquals(dataPayload, buffer)
+        }
+    }
+
+    @Test
+    fun extractsCueAudioTrackAsWav() {
+        val dataPayload = sectorFilledWith(0x33)
+        val audio = ByteArray(RAW_AUDIO_SECTOR_SIZE) { it.toByte() }
+        val image = tmp.newFile("audio.bin")
+        image.writeBytes(rawDataSector(dataPayload, 0) + audio)
+        val metadata = """
+            FILE "audio.bin" BINARY
+              TRACK 01 MODE1/2352
+                INDEX 01 00:00:00
+              TRACK 02 AUDIO
+                INDEX 01 00:00:01
+        """.trimIndent()
+
+        CdImageReader.openForFile(image, "audio.cue", metadata.toByteArray()).use { reader ->
+            val output = ByteArrayOutputStream()
+
+            assertEquals(listOf(2), reader.audioTracks())
+            reader.extractAudioTrack(2, output)
+
+            val wav = output.toByteArray()
+            assertEquals("RIFF", wav.decodeAscii(0, 4))
+            assertEquals(RAW_AUDIO_SECTOR_SIZE + 36, wav.readLeInt(4))
+            assertEquals("WAVE", wav.decodeAscii(8, 4))
+            assertEquals("data", wav.decodeAscii(36, 4))
+            assertEquals(RAW_AUDIO_SECTOR_SIZE, wav.readLeInt(40))
+            assertEquals(44100, wav.readLeInt(24))
+            assertEquals(2, wav.readLeShort(22))
+            assertEquals(16, wav.readLeShort(34))
+            assertArrayEquals(audio, wav.copyOfRange(44, 44 + RAW_AUDIO_SECTOR_SIZE))
+        }
+    }
+
+    @Test
+    fun rejectsUnsupportedCueMode() {
+        val image = tmp.newFile("unsupported.bin")
+        image.writeBytes(ByteArray(CdImageReader.ISO_SECTOR_SIZE))
+
+        assertInstallFailure(R.string.unsupported_cd_image) {
+            CdImageReader.openForFile(image, "unsupported.cue", cue("MODE2/2352").toByteArray())
+        }
+    }
+
+    @Test
+    fun ccdUsesMode0ForAudioAndMode1PayloadOffsetForData() {
+        val dataPayload = sectorFilledWith(0x52)
+        val audio = ByteArray(RAW_AUDIO_SECTOR_SIZE) { (255 - it).toByte() }
+        val image = tmp.newFile("disc.img")
+        image.writeBytes(rawDataSector(dataPayload, 0x08) + audio)
+        val metadata = """
+            [TRACK 1]
+            MODE=1
+            INDEX 1=0
+            [TRACK 2]
+            MODE=0
+            INDEX 1=1
+        """.trimIndent()
+
+        CdImageReader.openForFile(image, "disc.ccd", metadata.toByteArray()).use { reader ->
+            val buffer = ByteArray(CdImageReader.ISO_SECTOR_SIZE)
+            val output = ByteArrayOutputStream()
+
+            reader.readSector(0, buffer)
+            reader.extractAudioTrack(2, output)
+
+            assertArrayEquals(dataPayload, buffer)
+            assertEquals(listOf(2), reader.audioTracks())
+            assertArrayEquals(audio, output.toByteArray().copyOfRange(44, 44 + RAW_AUDIO_SECTOR_SIZE))
+        }
+    }
+
+    @Test
+    fun mdsMapsModeAAToDataAndModeA9ToAudio() {
+        val dataPayload = sectorFilledWith(0x61)
+        val audio = ByteArray(RAW_AUDIO_SECTOR_SIZE) { (it * 3).toByte() }
+        val image = tmp.newFile("disc.mdf")
+        image.writeBytes(rawDataSector(dataPayload, 0x09) + audio)
+
+        CdImageReader.openForFile(image, "disc.mds", mds(track1Sectors = 1, track2Sectors = 1)).use { reader ->
+            val buffer = ByteArray(CdImageReader.ISO_SECTOR_SIZE)
+            val output = ByteArrayOutputStream()
+
+            reader.readSector(0, buffer)
+            reader.extractAudioTrack(2, output)
+
+            assertArrayEquals(dataPayload, buffer)
+            assertEquals(listOf(2), reader.audioTracks())
+            assertArrayEquals(audio, output.toByteArray().copyOfRange(44, 44 + RAW_AUDIO_SECTOR_SIZE))
+        }
+    }
+
+    @Test
+    fun rejectsMdsWithoutMediaDescriptorSignature() {
+        val image = tmp.newFile("bad.mdf")
+        image.writeBytes(ByteArray(RAW_AUDIO_SECTOR_SIZE))
+
+        assertInstallFailure(R.string.unsupported_cd_image) {
+            CdImageReader.openForFile(image, "bad.mds", ByteArray(0x70))
+        }
+    }
+}
+
+class GameInstallerCdImageTest {
+    @get:Rule
+    val tmp = TemporaryFolder()
+
+    @Test
+    fun installsDataOnlyIso() = runBlocking {
+        val root = tmp.newFolder("root")
+        val iso = SyntheticIsoBuilder()
+            .addGameDataFile("SA.ALD;1", "ald".toByteArray())
+            .addGameDataFile("TITLE.TXT;1", "title".toByteArray())
+            .writeTo(tmp.newFile("game.iso"))
+
+        CdImageReader.openForFile(iso).use { reader ->
+            val gameDir = GameInstaller(GameStore(root)).installCdImageForTest(reader) {}
+
+            assertEquals(File(root, "0/GAMEDATA").canonicalFile, gameDir.canonicalFile)
+            assertEquals("GAMEDATA", File(root, "0/${Launcher.GAMEDIR_FILE}").readText())
+            assertEquals("ald", File(gameDir, "SA.ALD").readText())
+            assertEquals("title", File(gameDir, "TITLE.TXT").readText())
+        }
+    }
+
+    @Test
+    fun installsCueAudioTrackAndPlaylist() = runBlocking {
+        val root = tmp.newFolder("root")
+        val isoSector = SyntheticIsoBuilder()
+            .addGameDataFile("SA.ALD;1", "ald".toByteArray())
+            .toByteArray()
+        val dataSectors = isoSector.toList().chunked(CdImageReader.ISO_SECTOR_SIZE)
+            .joinToByteArray { rawDataSector(it.toByteArray(), 0) }
+        val audio = ByteArray(RAW_AUDIO_SECTOR_SIZE) { (it and 0x7f).toByte() }
+        val image = tmp.newFile("audio.bin")
+        image.writeBytes(dataSectors + audio)
+        val dataSectorCount = isoSector.size / CdImageReader.ISO_SECTOR_SIZE
+        val metadata = """
+            FILE "audio.bin" BINARY
+              TRACK 01 MODE1/2352
+                INDEX 01 00:00:00
+              TRACK 02 AUDIO
+                INDEX 01 ${dataSectorCount.toMsf()}
+        """.trimIndent()
+
+        CdImageReader.openForFile(image, "audio.cue", metadata.toByteArray()).use { reader ->
+            val gameDir = GameInstaller(GameStore(root)).installCdImageForTest(reader) {}
+
+            val wav = File(gameDir, "cdda/track02.wav")
+            assertTrue(wav.exists())
+            assertEquals("\ncdda/track02.wav", File(gameDir, Launcher.PLAYLIST_FILE).readText())
+        }
+    }
+
+    @Test
+    fun rejectsIsoWithoutGameDataDirectoryAndDeletesIncompleteInstall() = runBlocking {
+        val root = tmp.newFolder("root")
+        val iso = SyntheticIsoBuilder(includeGameData = false).writeTo(tmp.newFile("nogamedata.iso"))
+
+        CdImageReader.openForFile(iso).use { reader ->
+            assertInstallFailure(R.string.cannot_find_game_data_directory) {
+                runBlocking {
+                    GameInstaller(GameStore(root)).installCdImageForTest(reader) {}
+                }
+            }
+        }
+
+        assertFalse(File(root, "0").exists())
+    }
+
+    @Test
+    fun rejectsIsoWithoutAldAndDeletesIncompleteInstall() = runBlocking {
+        val root = tmp.newFolder("root")
+        val iso = SyntheticIsoBuilder()
+            .addGameDataFile("README.TXT;1", "readme".toByteArray())
+            .writeTo(tmp.newFile("noald.iso"))
+
+        CdImageReader.openForFile(iso).use { reader ->
+            assertInstallFailure(R.string.cannot_find_ald) {
+                runBlocking {
+                    GameInstaller(GameStore(root)).installCdImageForTest(reader) {}
+                }
+            }
+        }
+
+        assertFalse(File(root, "0").exists())
+    }
+
+    @Test
+    fun resolveOutputPathRejectsTraversal() {
+        val base = tmp.newFolder("out")
+
+        assertThrowsIOException {
+            resolveOutputPath(base, "../evil")
+        }
+        assertThrowsIOException {
+            resolveOutputPath(base, File(base.parentFile, "evil").absolutePath)
+        }
+    }
+}
+
+private class SyntheticIsoBuilder(
+    private val includeGameData: Boolean = true,
+) {
+    private val primaryFiles = mutableMapOf<String, ByteArray>()
+    private val jolietFiles = mutableMapOf<String, ByteArray>()
+
+    fun addGameDataFile(path: String, content: ByteArray): SyntheticIsoBuilder {
+        primaryFiles[path] = content
+        return this
+    }
+
+    fun addJolietGameDataFile(path: String, content: ByteArray): SyntheticIsoBuilder {
+        jolietFiles[path] = content
+        return this
+    }
+
+    fun writeTo(file: File): File {
+        file.writeBytes(toByteArray())
+        return file
+    }
+
+    fun toByteArray(): ByteArray {
+        val sectors = MutableList(80) { ByteArray(CdImageReader.ISO_SECTOR_SIZE) }
+        var nextSector = 30
+        val primaryTree = buildTree(primaryFiles, Charset.forName("Shift_JIS"))
+        val primaryRoot = writeTree(sectors, primaryTree, ROOT_SECTOR, GAMEDATA_SECTOR, nextSector, false)
+        nextSector = primaryRoot.nextSector
+
+        writeVolumeDescriptor(sectors[16], 1, ROOT_SECTOR, CdImageReader.ISO_SECTOR_SIZE, false)
+        var terminatorSector = 17
+        if (jolietFiles.isNotEmpty()) {
+            val jolietTree = buildTree(jolietFiles, Charsets.UTF_16BE)
+            writeTree(sectors, jolietTree, JOLIET_ROOT_SECTOR, JOLIET_GAMEDATA_SECTOR, nextSector, true)
+            writeVolumeDescriptor(sectors[17], 2, JOLIET_ROOT_SECTOR, CdImageReader.ISO_SECTOR_SIZE, true)
+            terminatorSector = 18
+        }
+        writeTerminator(sectors[terminatorSector])
+        return sectors.flattenToByteArray()
+    }
+
+    private fun buildTree(files: Map<String, ByteArray>, charset: Charset): DirectoryNode {
+        val root = DirectoryNode("")
+        if (!includeGameData) {
+            return root
+        }
+        val gameData = DirectoryNode("GAMEDATA")
+        root.directories["GAMEDATA"] = gameData
+        for ((path, content) in files) {
+            var directory = gameData
+            val parts = path.split("/")
+            for (part in parts.dropLast(1)) {
+                directory = directory.directories.getOrPut(part.substringBefore(";")) {
+                    DirectoryNode(part.substringBefore(";"))
+                }
+            }
+            val rawName = parts.last().toByteArray(charset)
+            directory.files.add(FileNode(rawName, content))
+        }
+        return root
+    }
+
+    private fun writeTree(
+        sectors: MutableList<ByteArray>,
+        root: DirectoryNode,
+        rootSector: Int,
+        gameDataSector: Int,
+        firstFileSector: Int,
+        joliet: Boolean,
+    ): TreeWriteResult {
+        var nextSector = firstFileSector
+        root.extent = rootSector
+        root.size = CdImageReader.ISO_SECTOR_SIZE
+        if (includeGameData) {
+            root.directories["GAMEDATA"]!!.extent = gameDataSector
+            root.directories["GAMEDATA"]!!.size = CdImageReader.ISO_SECTOR_SIZE
+        }
+        assignDirectorySectors(root, gameDataSector + 1)
+        nextSector = writeFileContents(sectors, root, nextSector)
+        writeDirectorySector(sectors[rootSector], root, root, joliet)
+        if (includeGameData) {
+            writeDirectorySectors(sectors, root.directories["GAMEDATA"]!!, root, joliet)
+        }
+        return TreeWriteResult(nextSector)
+    }
+
+    private fun assignDirectorySectors(directory: DirectoryNode, nextDirectorySector: Int): Int {
+        var sector = nextDirectorySector
+        for (child in directory.directories.values) {
+            if (child.name == "GAMEDATA") {
+                sector = assignDirectorySectors(child, sector)
+                continue
+            }
+            child.extent = sector++
+            child.size = CdImageReader.ISO_SECTOR_SIZE
+            sector = assignDirectorySectors(child, sector)
+        }
+        return sector
+    }
+
+    private fun writeFileContents(
+        sectors: MutableList<ByteArray>,
+        directory: DirectoryNode,
+        firstFileSector: Int,
+    ): Int {
+        var sector = firstFileSector
+        for (child in directory.directories.values) {
+            sector = writeFileContents(sectors, child, sector)
+        }
+        for (file in directory.files) {
+            file.extent = sector
+            file.size = file.content.size
+            val sectorCount = (file.content.size + CdImageReader.ISO_SECTOR_SIZE - 1) /
+                CdImageReader.ISO_SECTOR_SIZE
+            for (i in 0 until sectorCount) {
+                file.content.copyInto(
+                    sectors[sector + i],
+                    0,
+                    i * CdImageReader.ISO_SECTOR_SIZE,
+                    minOf(file.content.size, (i + 1) * CdImageReader.ISO_SECTOR_SIZE)
+                )
+            }
+            sector += maxOf(1, sectorCount)
+        }
+        return sector
+    }
+
+    private fun writeDirectorySectors(
+        sectors: MutableList<ByteArray>,
+        directory: DirectoryNode,
+        parent: DirectoryNode,
+        joliet: Boolean,
+    ) {
+        writeDirectorySector(sectors[directory.extent], directory, parent, joliet)
+        for (child in directory.directories.values) {
+            writeDirectorySectors(sectors, child, directory, joliet)
+        }
+    }
+
+    private fun writeDirectorySector(
+        sector: ByteArray,
+        directory: DirectoryNode,
+        parent: DirectoryNode,
+        joliet: Boolean,
+    ) {
+        var offset = 0
+        offset += writeRecord(sector, offset, byteArrayOf(0), directory.extent, directory.size, true)
+        offset += writeRecord(sector, offset, byteArrayOf(1), parent.extent, parent.size, true)
+        for (child in directory.directories.values) {
+            val name = if (joliet) child.name.toByteArray(Charsets.UTF_16BE) else child.name.toByteArray()
+            offset += writeRecord(sector, offset, name, child.extent, child.size, true)
+        }
+        for (file in directory.files) {
+            offset += writeRecord(sector, offset, file.rawName, file.extent, file.size, false)
+        }
+    }
+
+    private fun writeVolumeDescriptor(
+        sector: ByteArray,
+        type: Int,
+        rootExtent: Int,
+        rootSize: Int,
+        joliet: Boolean,
+    ) {
+        sector[0] = type.toByte()
+        "CD001".toByteArray(Charsets.US_ASCII).copyInto(sector, 1)
+        sector[6] = 1
+        if (joliet) {
+            sector[88] = 0x25
+            sector[89] = 0x2f
+            sector[90] = 0x45
+        }
+        writeRecord(sector, 156, byteArrayOf(0), rootExtent, rootSize, true)
+    }
+
+    private fun writeTerminator(sector: ByteArray) {
+        sector[0] = 255.toByte()
+        "CD001".toByteArray(Charsets.US_ASCII).copyInto(sector, 1)
+        sector[6] = 1
+    }
+
+    private fun writeRecord(
+        buffer: ByteArray,
+        offset: Int,
+        rawName: ByteArray,
+        extent: Int,
+        size: Int,
+        isDirectory: Boolean,
+    ): Int {
+        val length = 33 + rawName.size + if (rawName.size % 2 == 0) 1 else 0
+        buffer[offset] = length.toByte()
+        buffer.writeLeInt(offset + 2, extent)
+        buffer.writeLeInt(offset + 10, size)
+        buffer[offset + 25] = if (isDirectory) 0x02 else 0x00
+        buffer[offset + 32] = rawName.size.toByte()
+        rawName.copyInto(buffer, offset + 33)
+        return length
+    }
+
+    companion object {
+        private const val ROOT_SECTOR = 20
+        private const val GAMEDATA_SECTOR = 21
+        private const val JOLIET_ROOT_SECTOR = 24
+        private const val JOLIET_GAMEDATA_SECTOR = 25
+    }
+}
+
+private data class DirectoryNode(
+    val name: String,
+    val directories: MutableMap<String, DirectoryNode> = linkedMapOf(),
+    val files: MutableList<FileNode> = mutableListOf(),
+    var extent: Int = 0,
+    var size: Int = 0,
+)
+
+private data class FileNode(
+    val rawName: ByteArray,
+    val content: ByteArray,
+    var extent: Int = 0,
+    var size: Int = 0,
+)
+
+private data class TreeWriteResult(val nextSector: Int)
+
+private const val RAW_AUDIO_SECTOR_SIZE = 2352
+
+private fun cue(mode: String): String = """
+    FILE "image.bin" BINARY
+      TRACK 01 $mode
+        INDEX 01 00:00:00
+""".trimIndent()
+
+private fun mds(track1Sectors: Int, track2Sectors: Int): ByteArray {
+    val bytes = ByteArray(0x70 + 2 * 0x50 + 2 * 8)
+    "MEDIA DESCRIPTOR".toByteArray(Charsets.US_ASCII).copyInto(bytes, 0)
+    bytes[0x62] = 2
+    val track1 = 0x70
+    bytes[track1] = 0xaa.toByte()
+    bytes[track1 + 0x04] = 1
+    bytes.writeLeShort(track1 + 0x10, RAW_AUDIO_SECTOR_SIZE)
+    bytes.writeLeInt(track1 + 0x28, 0)
+    bytes.writeLeInt(0x70 + 2 * 0x50 + 0x04, track1Sectors)
+    val track2 = 0x70 + 0x50
+    bytes[track2] = 0xa9.toByte()
+    bytes[track2 + 0x04] = 2
+    bytes.writeLeShort(track2 + 0x10, RAW_AUDIO_SECTOR_SIZE)
+    bytes.writeLeInt(track2 + 0x28, track1Sectors * RAW_AUDIO_SECTOR_SIZE)
+    bytes.writeLeInt(0x70 + 2 * 0x50 + 8 + 0x04, track2Sectors)
+    return bytes
+}
+
+private fun sectorFilledWith(value: Int): ByteArray {
+    return ByteArray(CdImageReader.ISO_SECTOR_SIZE) { value.toByte() }
+}
+
+private fun rawDataSector(payload: ByteArray, prefixValue: Int): ByteArray {
+    val sector = ByteArray(RAW_AUDIO_SECTOR_SIZE) { prefixValue.toByte() }
+    payload.copyInto(sector, 16, 0, CdImageReader.ISO_SECTOR_SIZE)
+    return sector
+}
+
+private fun Int.toMsf(): String {
+    val minutes = this / (60 * 75)
+    val seconds = this / 75 % 60
+    val frames = this % 75
+    return "%02d:%02d:%02d".format(minutes, seconds, frames)
+}
+
+private fun Iterable<Byte>.toByteArray(): ByteArray {
+    val result = ByteArray(count())
+    forEachIndexed { index, byte -> result[index] = byte }
+    return result
+}
+
+private fun List<ByteArray>.flattenToByteArray(): ByteArray {
+    val result = ByteArray(sumOf { it.size })
+    var offset = 0
+    for (bytes in this) {
+        bytes.copyInto(result, offset)
+        offset += bytes.size
+    }
+    return result
+}
+
+private fun List<List<Byte>>.joinToByteArray(transform: (List<Byte>) -> ByteArray): ByteArray {
+    return map(transform).flattenToByteArray()
+}
+
+private fun ByteArray.decodeAscii(offset: Int, length: Int): String {
+    return String(this, offset, length, Charsets.US_ASCII)
+}
+
+private fun ByteArray.readLeShort(offset: Int): Int {
+    return (this[offset].toInt() and 0xff) or ((this[offset + 1].toInt() and 0xff) shl 8)
+}
+
+private fun ByteArray.readLeInt(offset: Int): Int {
+    return readLeShort(offset) or (readLeShort(offset + 2) shl 16)
+}
+
+private fun ByteArray.writeLeShort(offset: Int, value: Int) {
+    this[offset] = value.toByte()
+    this[offset + 1] = (value shr 8).toByte()
+}
+
+private fun ByteArray.writeLeInt(offset: Int, value: Int) {
+    writeLeShort(offset, value)
+    writeLeShort(offset + 2, value shr 16)
+}
+
+private fun assertInstallFailure(expectedMsgId: Int, block: () -> Unit): InstallFailureException {
+    try {
+        block()
+    } catch (e: InstallFailureException) {
+        assertEquals(expectedMsgId, e.msgId)
+        return e
+    }
+    fail("Expected InstallFailureException")
+    throw AssertionError()
+}
+
+private fun assertThrowsIOException(block: () -> Unit) {
+    try {
+        block()
+    } catch (e: java.io.IOException) {
+        return
+    }
+    fail("Expected IOException")
+}
@@ -7,7 +7,7 @@ buildscript {
        google()
    }
    dependencies {
-        classpath 'com.android.tools.build:gradle:8.1.1'
+        classpath 'com.android.tools.build:gradle:8.7.3'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

        // NOTE: Do not place your application dependencies here; they belong
@@ -1,6 +1,6 @@
 #Thu Nov 11 18:20:34 PST 2021
 distributionBase=GRADLE_USER_HOME
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.1.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.12-bin.zip
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
@@ -4,18 +4,17 @@
 #cmakedefine CACHE_TOTALSIZE @CACHE_TOTALSIZE@

 #cmakedefine ENABLE_DEBUGGER @ENABLE_DEBUGGER@
-#cmakedefine ENABLE_GTK @ENABLE_GTK@
 #cmakedefine ENABLE_MIDI_SDLMIXER @ENABLE_MIDI_SDLMIXER@
 #cmakedefine ENABLE_MIDI_PORTMIDI @ENABLE_MIDI_PORTMIDI@
-#cmakedefine ENABLE_NLS @ENABLE_NLS@

 #cmakedefine DEFAULT_PLAYLIST_PATH "@DEFAULT_PLAYLIST_PATH@"
 #cmakedefine JOY_DEVICE "@JOY_DEVICE@"

+#cmakedefine HAVE_LIBINTL @HAVE_LIBINTL@
 #cmakedefine HAVE_GETLOGIN @HAVE_GETLOGIN@
 #cmakedefine HAVE_MMAP @HAVE_MMAP@
 #cmakedefine HAVE_SIGACTION @HAVE_SIGACTION@
 #cmakedefine HAVE_WEBP @HAVE_WEBP@

 #define DEFAULT_GOTHIC_TTF "@DEFAULT_FONT_PATH@MTLc3m.ttf"
-#define DEFAULT_MINCHO_TTF "@DEFAULT_FONT_PATH@mincho.otf"
+#define DEFAULT_MINCHO_TTF "@DEFAULT_FONT_PATH@mincho.ttf"
@@ -30,7 +30,8 @@ finds System 3.x game files (*.ALD) from the current directory.
 *-game* _game_::
  Enables game-specific hacks. Usually auto-detected, but must be specified for
  games with modified / translated titles. Possible values are: `toushin2`,
-  `rance3_eng`, `rance4_eng`, `rance4_v2`, `persiom`, `agake`.
+  `rance2`, `rance3`, `rance3_eng`, `rance4_eng`, `rance4_v2`, `persiom`,
+  `agake`.

 *-savedir* _dir_::
  Directory to save game state files. If _dir_ begins with '~', it is expanded
@@ -48,6 +49,11 @@ finds System 3.x game files (*.ALD) from the current directory.
  Suppress text hook on specified scenario pages. _list_ is a comma-separated
  list of page numbers. Used to suppress system messages, etc.

+*-censor* _file_::
+  Enable Streamer Mode, which mosaics specific images to make them safe for
+  streaming. The _file_ is a text file containing a list of image numbers
+  to censor, one per line. Lines starting with '#' are treated as comments.
+
 *-renderer* _name_::
  Use the SDL rendering driver named _name_.

@@ -92,6 +98,9 @@ finds System 3.x game files (*.ALD) from the current directory.
 *-noimagecursor*::
  Disable custom mouse cursor images.

+*-mute_on_unfocus*::
+  Mute audio while the game window is not in focus.
+
 *-version*::
  Print the version number and exit.

@@ -1,8 +1,6 @@
 install(FILES
  MTLc3m.ttf
-  MTLc3m.ttf.license
-  mincho.otf
-  mincho.otf.license
+  mincho.ttf
  DESTINATION share/xsystem35/fonts)

 # pyftsubset is included in fonttools.
@@ -11,8 +9,9 @@ find_program(PYFTSUBSET_FOUND pyftsubset)
 if (PYFTSUBSET_FOUND)
  add_custom_target(fonts
    COMMAND uchars > uchars.txt
-    COMMAND wget -O SourceHanSerifJP-Regular.otf https://github.com/adobe-fonts/source-han-serif/blob/release/SubsetOTF/JP/SourceHanSerifJP-Regular.otf?raw=true
-    COMMAND pyftsubset SourceHanSerifJP-Regular.otf --text-file=uchars.txt --output-file=subset.otf
-    COMMAND python3 ${CMAKE_CURRENT_SOURCE_DIR}/adjust_metrics.py subset.otf ${CMAKE_CURRENT_SOURCE_DIR}/mincho.otf
+    COMMAND wget -O ipam.zip https://moji.or.jp/wp-content/ipafont/IPAfont/ipam00303.zip
+    COMMAND unzip -o -j ipam.zip ipam00303/ipam.ttf
+    COMMAND pyftsubset ipam.ttf --text-file=uchars.txt --output-file=subset.ttf
+    COMMAND python3 ${CMAKE_CURRENT_SOURCE_DIR}/rename_font.py subset.ttf ${CMAKE_CURRENT_SOURCE_DIR}/mincho.ttf
    )
 endif()
@@ -1,22 +0,0 @@
-#!/usr/bin/env python3
-import sys
-from fontTools.ttLib import TTFont
-
-if len(sys.argv) != 3:
-    print('Usage: adjust_metrics.py infile outfile')
-    exit(1)
-
-font = TTFont(sys.argv[1])
-
-hhea = font['hhea']
-os2 = font['OS/2']
-
-if hhea.ascent != os2.sTypoAscender:
-    print(f'Changing hhea.ascent from {hhea.ascent} to {os2.sTypoAscender}')
-    hhea.ascent = os2.sTypoAscender
-
-if hhea.descent != os2.sTypoDescender:
-    print(f'Changing hhea.descent from {hhea.descent} to {os2.sTypoDescender}')
-    hhea.descent = os2.sTypoDescender
-
-font.save(sys.argv[2])
@@ -1,92 +0,0 @@
-This Font Software is licensed under the SIL Open Font License,
-Version 1.1.
-
-This license is copied below, and is also available with a FAQ at:
-http://scripts.sil.org/OFL
-
-----------------------------------------------------------
-SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
-----------------------------------------------------------
-
-PREAMBLE
-The goals of the Open Font License (OFL) are to stimulate worldwide
-development of collaborative font projects, to support the font
-creation efforts of academic and linguistic communities, and to
-provide a free and open framework in which fonts may be shared and
-improved in partnership with others.
-
-The OFL allows the licensed fonts to be used, studied, modified and
-redistributed freely as long as they are not sold by themselves. The
-fonts, including any derivative works, can be bundled, embedded,
-redistributed and/or sold with any software provided that any reserved
-names are not used by derivative works. The fonts and derivatives,
-however, cannot be released under any other type of license. The
-requirement for fonts to remain under this license does not apply to
-any document created using the fonts or their derivatives.
-
-DEFINITIONS
-"Font Software" refers to the set of files released by the Copyright
-Holder(s) under this license and clearly marked as such. This may
-include source files, build scripts and documentation.
-
-"Reserved Font Name" refers to any names specified as such after the
-copyright statement(s).
-
-"Original Version" refers to the collection of Font Software
-components as distributed by the Copyright Holder(s).
-
-"Modified Version" refers to any derivative made by adding to,
-deleting, or substituting -- in part or in whole -- any of the
-components of the Original Version, by changing formats or by porting
-the Font Software to a new environment.
-
-"Author" refers to any designer, engineer, programmer, technical
-writer or other person who contributed to the Font Software.
-
-PERMISSION & CONDITIONS
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of the Font Software, to use, study, copy, merge, embed,
-modify, redistribute, and sell modified and unmodified copies of the
-Font Software, subject to the following conditions:
-
-1) Neither the Font Software nor any of its individual components, in
-Original or Modified Versions, may be sold by itself.
-
-2) Original or Modified Versions of the Font Software may be bundled,
-redistributed and/or sold with any software, provided that each copy
-contains the above copyright notice and this license. These can be
-included either as stand-alone text files, human-readable headers or
-in the appropriate machine-readable metadata fields within text or
-binary files as long as those fields can be easily viewed by the user.
-
-3) No Modified Version of the Font Software may use the Reserved Font
-Name(s) unless explicit written permission is granted by the
-corresponding Copyright Holder. This restriction only applies to the
-primary font name as presented to the users.
-
-4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
-Software shall not be used to promote, endorse or advertise any
-Modified Version, except to acknowledge the contribution(s) of the
-Copyright Holder(s) and the Author(s) or with their explicit written
-permission.
-
-5) The Font Software, modified or unmodified, in part or in whole,
-must be distributed entirely under this license, and must not be
-distributed under any other license. The requirement for fonts to
-remain under this license does not apply to any document created using
-the Font Software.
-
-TERMINATION
-This license becomes null and void if any of the above conditions are
-not met.
-
-DISCLAIMER
-THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
-OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
-COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
-DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
-OTHER DEALINGS IN THE FONT SOFTWARE.
@@ -0,0 +1,33 @@
+#!/usr/bin/env python3
+# Rename the font's internal name records.
+#
+# IPA明朝 is distributed under the IPA Font License v1.0. A subset of it is a
+# "Derived Program" under that license, and Article 3.1(4) forbids using or
+# including the Licensed Program's name ("IPA"/"IPAMincho") as the program,
+# font, or file name of the Derived Program. pyftsubset preserves the original
+# name table, so rename it here to a name that does not contain "IPA".
+import sys
+from fontTools.ttLib import TTFont
+
+if len(sys.argv) != 3:
+    print('Usage: rename_font.py infile outfile')
+    exit(1)
+
+FAMILY = 'xsystem35 Mincho'
+PSNAME = 'xsystem35-Mincho'
+
+font = TTFont(sys.argv[1])
+name = font['name']
+
+# Rewrite the family / full / typographic-family / PostScript / unique-ID
+# records in place, preserving each record's platform, encoding and language.
+for rec in list(name.names):
+    if rec.nameID in (1, 4, 16):
+        value = FAMILY
+    elif rec.nameID in (3, 6):
+        value = PSNAME
+    else:
+        continue
+    name.setName(value, rec.nameID, rec.platformID, rec.platEncID, rec.langID)
+
+font.save(sys.argv[2])
@@ -42,7 +42,7 @@ Game Compatibility
 | これD・P・S？                               | Supported   | From 20世紀アリス |
 | 夜が来る！                                  | Unsupported |       |
 | Only you ～リ・クルス～                     | Supported   |       |
-| 大悪司                                      | Supported   | Opening demo is not supported |
+| 大悪司                                      | Supported   |       |
 | 王子さまＬｖ１                              | Supported   |       |
 | 王子さま１ヵ月後                            | Supported   | From 王子さまLV1.5 |
 | 白鳳の子分叩き                              | Supported   | From 王子さまLV1.5 |
@@ -58,9 +58,11 @@ Game Compatibility
 | 妻みぐい２                                  | Supported   |       |
 | シェル・クレイル                            | Supported   |       |
 | ナイトデーモン                              | Supported   |       |
+| Nor                                         | Unsupported |       |
+| 翡翠の眸                                    | Unsupported |       |
 | 学園KING                                    | Supported   | From アリスCD |
 | 学園KING 番外編                             | Supported   | From アリスCD |
-| 蒼海に墜ちて                                | Supported   | From アリスCD |
+| 蒼海に堕ちて…                               | Supported   | From アリスCD |
 | ぶろぶろ                                    | Supported   | From アリスCD |
 | 裸ぶろぶろ狂                                | Supported   | From アリスCD |
 | メイドのススメ                              | Supported   | From アリスCD |
@@ -0,0 +1,19 @@
+Copyright (c) 2024 rxi
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
@@ -0,0 +1,117 @@
+--------------------------------------------------
+IPA Font License Agreement v1.0 <Japanese/English>
+--------------------------------------------------
+
+IPAフォントライセンスv1.0
+
+許諾者は、この使用許諾（以下「本契約」といいます。）に定める条件の下で、許諾プログラム（1条に定義するところによります。）を提供します。受領者（1条に定義するところによります。）が、許諾プログラムを使用し、複製し、または頒布する行為、その他、本契約に定める権利の利用を行った場合、受領者は本契約に同意したものと見なします。
+
+
+第1条　用語の定義
+
+本契約において、次の各号に掲げる用語は、当該各号に定めるところによります。
+
+1.「デジタル･フォント･プログラム」とは、フォントを含み、レンダリングしまたは表示するために用いられるコンピュータ・プログラムをいいます。
+2.「許諾プログラム」とは、許諾者が本契約の下で許諾するデジタル･フォント･プログラムをいいます。
+3.「派生プログラム」とは、許諾プログラムの一部または全部を、改変し、加除修正等し、入れ替え、その他翻案したデジタル･フォント･プログラムをいい、許諾プログラムの一部もしくは全部から文字情報を取り出し、またはデジタル･ドキュメント･ファイルからエンベッドされたフォントを取り出し、取り出された文字情報をそのまま、または改変をなして新たなデジタル・フォント・プログラムとして製作されたものを含みます。
+4.「デジタル・コンテンツ」とは、デジタル・データ形式によってエンド・ユーザに提供される制作物のことをいい、動画・静止画等の映像コンテンツおよびテレビ番組等の放送コンテンツ、ならびに文字テキスト、画像、図形等を含んで構成された制作物を含みます。
+5.「デジタル・ドキュメント・ファイル」とは、PDFファイルその他、各種ソフトウェア･プログラムによって製作されたデジタル・コンテンツであって、その中にフォントを表示するために許諾プログラムの全部または一部が埋め込まれた（エンベッドされた）ものをいいます。フォントが「エンベッドされた」とは、当該フォントが埋め込まれた特定の「デジタル・ドキュメント・ファイル」においてのみ表示されるために使用されている状態を指し、その特定の「デジタル・ドキュメント・ファイル」以外でフォントを表示するために使用できるデジタル・フォント・プログラムに含まれている場合と区別されます。
+6.「コンピュータ｣とは、本契約においては、サーバを含みます。
+7.「複製その他の利用」とは、複製、譲渡、頒布、貸与、公衆送信、上映、展示、翻案その他の利用をいいます。
+8.「受領者」とは、許諾プログラムを本契約の下で受領した人をいい、受領者から許諾プログラムを受領した人を含みます。
+
+第２条 使用許諾の付与
+
+許諾者は受領者に対し、本契約の条項に従い、すべての国で、許諾プログラムを使用することを許諾します。ただし、許諾プログラムに存在する一切の権利はすべて許諾者が保有しています。本契約は、本契約で明示的に定められている場合を除き、いかなる意味においても、許諾者が保有する許諾プログラムに関する一切の権利および、いかなる商標、商号、もしくはサービス・マークに関する権利をも受領者に移転するものではありません。
+
+1.受領者は本契約に定める条件に従い、許諾プログラムを任意の数のコンピュータにインストールし、当該コンピュータで使用することができます。
+2.受領者はコンピュータにインストールされた許諾プログラムをそのまま、または改変を行ったうえで、印刷物およびデジタル・コンテンツにおいて、文字テキスト表現等として使用することができます。
+3.受領者は前項の定めに従い作成した印刷物およびデジタル・コンテンツにつき、その商用・非商用の別、および放送、通信、各種記録メディアなどの媒体の形式を問わず、複製その他の利用をすることができます。
+4.受領者がデジタル・ドキュメント・ファイルからエンベッドされたフォントを取り出して派生プログラムを作成した場合には、かかる派生プログラムは本契約に定める条件に従う必要があります。
+5.許諾プログラムのエンベッドされたフォントがデジタル・ドキュメント・ファイル内のデジタル・コンテンツをレンダリングするためにのみ使用される場合において、受領者が当該デジタル・ドキュメント・ファイルを複製その他の利用をする場合には、受領者はかかる行為に関しては本契約の下ではいかなる義務をも負いません。
+6.受領者は、3条2項の定めに従い、商用・非商用を問わず、許諾プログラムをそのままの状態で改変することなく複製して第三者への譲渡し、公衆送信し、その他の方法で再配布することができます(以下、「再配布」といいます。)。
+7.受領者は、上記の許諾プログラムについて定められた条件と同様の条件に従って、派生プログラムを作成し、使用し、複製し、再配布することができます。ただし、受領者が派生プログラムを再配布する場合には、3条1項の定めに従うものとします。
+
+第３条　制限
+
+前条により付与された使用許諾は、以下の制限に服します。
+
+1.派生プログラムが前条4項及び7項に基づき再配布される場合には、以下の全ての条件を満たさなければなりません。
+　(1)派生プログラムを再配布する際には、下記もまた、当該派生プログラムと一緒に再配布され、オンラインで提供され、または、郵送費・媒体及び取扱手数料の合計を超えない実費と引き換えに媒体を郵送する方法により提供されなければなりません。
+　　(a)派生プログラムの写し; および
+　　(b)派生プログラムを作成する過程でフォント開発プログラムによって作成された追加のファイルであって派生プログラムをさらに加工するにあたって利用できるファイルが存在すれば、当該ファイル
+　(2)派生プログラムの受領者が、派生プログラムを、このライセンスの下で最初にリリースされた許諾プログラム（以下、「オリジナル・プログラム」といいます。）に置き換えることができる方法を再配布するものとします。かかる方法は、オリジナル・ファイルからの差分ファイルの提供、または、派生プログラムをオリジナル・プログラムに置き換える方法を示す指示の提供などが考えられます。
+　(3)派生プログラムを、本契約書に定められた条件の下でライセンスしなければなりません。
+　(4)派生プログラムのプログラム名、フォント名またはファイル名として、許諾プログラムが用いているのと同一の名称、またはこれを含む名称を使用してはなりません。
+　(5)本項の要件を満たすためにオンラインで提供し、または媒体を郵送する方法で提供されるものは、その提供を希望するいかなる者によっても提供が可能です。
+2.受領者が前条6項に基づき許諾プログラムを再配布する場合には、以下の全ての条件を満たさなければなりません。
+　(1)許諾プログラムの名称を変更してはなりません。
+　(2)許諾プログラムに加工その他の改変を加えてはなりません。
+　(3)本契約の写しを許諾プログラムに添付しなければなりません。
+3.許諾プログラムは、現状有姿で提供されており、許諾プログラムまたは派生プログラムについて、許諾者は一切の明示または黙示の保証（権利の所在、非侵害、商品性、特定目的への適合性を含むがこれに限られません）を行いません。いかなる場合にも、その原因を問わず、契約上の責任か厳格責任か過失その他の不法行為責任かにかかわらず、また事前に通知されたか否かにかかわらず、許諾者は、許諾プログラムまたは派生プログラムのインストール、使用、複製その他の利用または本契約上の権利の行使によって生じた一切の損害（直接・間接・付随的・特別・拡大・懲罰的または結果的損害）（商品またはサービスの代替品の調達、システム障害から生じた損害、現存するデータまたはプログラムの紛失または破損、逸失利益を含むがこれに限られません）について責任を負いません。
+4.許諾プログラムまたは派生プログラムのインストール、使用、複製その他の利用に関して、許諾者は技術的な質問や問い合わせ等に対する対応その他、いかなるユーザ・サポートをも行う義務を負いません。
+
+第４条　契約の終了
+
+1.本契約の有効期間は、受領者が許諾プログラムを受領した時に開始し、受領者が許諾プログラムを何らかの方法で保持する限り続くものとします。
+2.前項の定めにかかわらず、受領者が本契約に定める各条項に違反したときは、本契約は、何らの催告を要することなく、自動的に終了し、当該受領者はそれ以後、許諾プログラムおよび派生プログラムを一切使用しまたは複製その他の利用をすることができないものとします。ただし、かかる契約の終了は、当該違反した受領者から許諾プログラムまたは派生プログラムの配布を受けた受領者の権利に影響を及ぼすものではありません。
+
+第５条　準拠法
+
+1.IPAは、本契約の変更バージョンまたは新しいバージョンを公表することができます。その場合には、受領者は、許諾プログラムまたは派生プログラムの使用、複製その他の利用または再配布にあたり、本契約または変更後の契約のいずれかを選択することができます。その他、上記に記載されていない条項に関しては日本の著作権法および関連法規に従うものとします。
+2.本契約は、日本法に基づき解釈されます。
+
+
+----------
+
+IPA Font License Agreement v1.0
+
+The Licensor provides the Licensed Program (as defined in Article 1 below) under the terms of this license agreement (“Agreement”).  Any use, reproduction or distribution of the Licensed Program, or any exercise of rights under this Agreement by a Recipient (as defined in Article 1 below) constitutes the Recipient's acceptance of this Agreement. 
+
+Article 1 (Definitions)
+1.“Digital Font Program” shall mean a computer program containing, or used to render or display fonts.
+2.“Licensed Program” shall mean a Digital Font Program licensed by the Licensor under this Agreement.
+3.“Derived Program” shall mean a Digital Font Program created as a result of a modification, addition, deletion, replacement or any other adaptation to or of a part or all of the Licensed Program, and includes a case where a Digital Font Program newly created by retrieving font information from a part or all of the Licensed Program or Embedded Fonts from a Digital Document File with or without modification of the retrieved font information. 
+4.“Digital Content” shall mean products provided to end users in the form of digital data, including video content, motion and/or still pictures, TV programs or other broadcasting content and products consisting of character text, pictures, photographic images, graphic symbols and/or the like.
+5.“Digital Document File” shall mean a PDF file or other Digital Content created by various software programs in which a part or all of the Licensed Program becomes embedded or contained in the file for the display of the font (“Embedded Fonts”).  Embedded Fonts are used only in the display of characters in the particular Digital Document File within which they are embedded, and shall be distinguished from those in any Digital Font Program, which may be used for display of characters outside that particular Digital Document File.
+6.“Computer” shall include a server in this Agreement.
+7.“Reproduction and Other Exploitation” shall mean reproduction, transfer, distribution, lease, public transmission, presentation, exhibition, adaptation and any other exploitation.
+8.“Recipient” shall mean anyone who receives the Licensed Program under this Agreement, including one that receives the Licensed Program from a Recipient.
+
+Article 2 (Grant of License)
+The Licensor grants to the Recipient a license to use the Licensed Program in any and all countries in accordance with each of the provisions set forth in this Agreement. However, any and all rights underlying in the Licensed Program shall be held by the Licensor. In no sense is this Agreement intended to transfer any right relating to the Licensed Program held by the Licensor except as specifically set forth herein or any right relating to any trademark, trade name, or service mark to the Recipient.
+
+1.The Recipient may install the Licensed Program on any number of Computers and use the same in accordance with the provisions set forth in this Agreement.
+2.The Recipient may use the Licensed Program, with or without modification in printed materials or in Digital Content as an expression of character texts or the like.
+3.The Recipient may conduct Reproduction and Other Exploitation of the printed materials and Digital Content created in accordance with the preceding Paragraph, for commercial or non-commercial purposes and in any form of media including but not limited to broadcasting, communication and various recording media.
+4.If any Recipient extracts Embedded Fonts from a Digital Document File to create a Derived Program, such Derived Program shall be subject to the terms of this agreement.
+5.If any Recipient performs Reproduction or Other Exploitation of a Digital Document File in which Embedded Fonts of the Licensed Program are used only for rendering the Digital Content within such Digital Document File then such Recipient shall have no further obligations under this Agreement in relation to such actions.
+6.The Recipient may reproduce the Licensed Program as is without modification and transfer such copies, publicly transmit or otherwise redistribute the Licensed Program to a third party for commercial or non-commercial purposes (“Redistribute”), in accordance with the provisions set forth in Article 3 Paragraph 2.
+7.The Recipient may create, use, reproduce and/or Redistribute a Derived Program under the terms stated above for the Licensed Program: provided, that the Recipient shall follow the provisions set forth in Article 3 Paragraph 1 when Redistributing the Derived Program. 
+
+Article 3 (Restriction)
+The license granted in the preceding Article shall be subject to the following restrictions:
+
+1.If a Derived Program is Redistributed pursuant to Paragraph 4 and 7 of the preceding Article, the following conditions must be met :
+　(1)The following must be also Redistributed together with the Derived Program, or be made available online or by means of mailing mechanisms in exchange for a cost which does not exceed the total costs of postage, storage medium and handling fees:
+　　(a)a copy of the Derived Program; and
+　　(b)any additional file created by the font developing program in the course of creating the Derived Program that can be used for further modification of the Derived Program, if any. 
+　(2)It is required to also Redistribute means to enable recipients of the Derived Program to replace the Derived Program with the Licensed Program first released under this License (the “Original Program”).  Such means may be to provide a difference file from the Original Program, or instructions setting out a method to replace the Derived Program with the Original Program. 
+　(3)The Recipient must license the Derived Program under the terms and conditions of this Agreement.
+　(4)No one may use or include the name of the Licensed Program as a program name, font name or file name of the Derived Program. 
+　(5)Any material to be made available online or by means of mailing a medium to satisfy the requirements of this paragraph may be provided, verbatim, by any party wishing to do so.
+2.If the Recipient Redistributes the Licensed Program pursuant to Paragraph 6 of the preceding Article, the Recipient shall meet all of the following conditions:
+　(1)The Recipient may not change the name of the Licensed Program.
+　(2)The Recipient may not alter or otherwise modify the Licensed Program.
+　(3)The Recipient must attach a copy of this Agreement to the Licensed Program.
+3.THIS LICENSED PROGRAM IS PROVIDED BY THE LICENSOR “AS IS” AND ANY EXPRESSED OR IMPLIED WARRANTY AS TO THE LICENSED PROGRAM OR ANY DERIVED PROGRAM, INCLUDING, BUT NOT LIMITED TO, WARRANTIES OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.  IN NO EVENT SHALL THE LICENSOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXTENDED, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO; PROCUREMENT OF SUBSTITUTED GOODS OR SERVICE; DAMAGES ARISING FROM SYSTEM FAILURE; LOSS OR CORRUPTION OF EXISTING DATA OR PROGRAM; LOST PROFITS), HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE INSTALLATION, USE, THE REPRODUCTION OR OTHER EXPLOITATION OF THE LICENSED PROGRAM OR ANY DERIVED PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+4.The Licensor is under no obligation to respond to any technical questions or inquiries, or provide any other user support in connection with the installation, use or the Reproduction and Other Exploitation of the Licensed Program or Derived Programs thereof.
+
+Article 4 (Termination of Agreement)
+1.The term of this Agreement shall begin from the time of receipt of the Licensed Program by the Recipient and shall continue as long as the Recipient retains any such Licensed Program in any way.
+2.Notwithstanding the provision set forth in the preceding Paragraph, in the event of the breach of any of the provisions set forth in this Agreement by the Recipient, this Agreement shall automatically terminate without any notice. In the case of such termination, the Recipient may not use or conduct Reproduction and Other Exploitation of the Licensed Program or a Derived Program: provided that such termination shall not affect any rights of any other Recipient receiving the Licensed Program or the Derived Program from such Recipient who breached this Agreement.
+
+Article 5 (Governing Law)
+1.IPA may publish revised and/or new versions of this License.  In such an event, the Recipient may select either this Agreement or any subsequent version of the Agreement in using, conducting the Reproduction and Other Exploitation of, or Redistributing the Licensed Program or a Derived Program. Other matters not specified above shall be subject to the Copyright Law of Japan and other related laws and regulations of Japan.
+2.This Agreement shall be construed under the laws of Japan.
+
@@ -0,0 +1,22 @@
+// NanoJPEG -- KeyJ's Tiny Baseline JPEG Decoder
+// version 1.3.5 (2016-11-14)
+// Copyright (c) 2009-2016 Martin J. Fiedler <martin.fiedler@gmx.net>
+// published under the terms of the MIT license
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
@@ -0,0 +1,21 @@
+# Censor Lists for Streamer Mode
+
+This directory contains sample censor lists for various games, intended for use
+with xsystem35's Streamer Mode.
+
+## Usage
+
+To use a censor list, specify its path with the `-censor` command-line option
+or in your `.xsys35rc` file. For example:
+
+```bash
+xsystem35 -censor misc/censor/kichikuou.txt
+```
+
+The list files contain image numbers (integers), one per line. Lines starting
+with `#` are treated as comments.
+
+## Contributing
+
+We welcome contributions of censor lists for other games! If you have created
+a censor list that you'd like to share, please open a Pull Request.
@@ -0,0 +1,164 @@
+# Censor list for 鬼畜王ランス (Kichikuou Rance)
+27
+70
+93
+101
+102
+103
+106
+107
+108
+109
+110
+111
+112
+113
+114
+115
+116
+117
+118
+119
+120
+121
+123
+124
+125
+126
+127
+128
+129
+130
+131
+132
+133
+134
+136
+137
+138
+139
+140
+141
+142
+143
+144
+145
+146
+147
+148
+149
+150
+151
+152
+153
+154
+155
+156
+157
+158
+160
+161
+162
+163
+164
+165
+166
+167
+168
+169
+171
+172
+174
+175
+176
+177
+178
+179
+180
+181
+182
+183
+184
+185
+186
+187
+188
+189
+190
+191
+193
+195
+196
+197
+198
+199
+200
+201
+203
+204
+205
+206
+207
+208
+209
+210
+214
+215
+216
+217
+218
+219
+221
+222
+224
+225
+226
+227
+228
+229
+230
+231
+232
+233
+234
+235
+239
+299
+300
+361
+362
+363
+375
+376
+377
+393
+422
+461
+466
+500
+501
+502
+503
+504
+505
+506
+507
+508
+509
+510
+511
+512
+513
+514
+515
+517
+844
+845
+846
+847
+848
+851
+852
+853
+854
+855
@@ -12,7 +12,7 @@ static void Init() {
 	int p1 = getCaliValue(); /* ISys3x */
 	int p2 = getCaliValue(); /* IWinMsg */
 	int p3 = getCaliValue(); /* ITimer */
-	int *var = getCaliVariable();
+	vmvar_t *var = getCaliVariable();
 	
 	*var = 1;
 	
@@ -5,12 +5,16 @@ add_library(modules STATIC
  AliceLogo/AliceLogo.c
  Confirm/Confirm.c
  Gpx/Gpx.c
+  Gpx/cg.c
  Gpx/effectcopy.c
+  Gpx/graph_copy_amap.c
+  Gpx/graph_fillrect_amap.c
+  Gpx/graph.c
+  Gpx/surface.c
  Math/Math.c
  MsgSkip/MsgSkip.c
  NIGHTDLL/NIGHTDLL.c
  NIGHTDLL/nt_scenario.c
-  NIGHTDLL/sactcg.c
  NIGHTDLL/sactstring.c
  NIGHTDLL/sprite.c
  NIGHTDLL/sprite_draw.c
@@ -25,7 +29,6 @@ add_library(modules STATIC
  RandMT/RandMT.c
  S3xMusic/S3xMusic.c
  SACT/SACT.c
-  SACT/sactcg.c
  SACT/sactsound.c
  SACT/sacttimer.c
  SACT/sactstring.c
@@ -61,27 +64,9 @@ add_library(modules STATIC
  eeDemo/eeDemo.c
  lib/alk.c
  lib/drawtext.c
-  lib/graph.c
  lib/list.c
-  lib/surface.c
-  lib/cg.c
-  lib/graph_expandcolor_blend.c
-  lib/graph_fillrect.c
-  lib/graph_fillrect_amap.c
-  lib/graph_fillrect_acolor.c
-  lib/graph_rect.c
-  lib/graph_copy.c
-  lib/graph_copy_amap.c
-  lib/graph_copy_bright.c
  lib/graph_blend_amap.c
-  lib/graph_blend_screen.c
-  lib/graph_saturadd_amap.c
-  lib/graph_draw_amap.c
-  lib/graph_stretch.c
-  lib/graph_cg.c
-  lib/gre_blend_useamap.c
-  lib/gre_blend.c
-  lib/gre_blend_screen.c
+  lib/sactcg.c
  nDEMO/nDEMO.c
  nDEMOE/nDEMOE.c
  oDEMO/oDEMO.c
@@ -15,8 +15,8 @@ static void Init() {

 static void ExistKeyFile() {
 	const char *p1 = sl_getString(0);
-	int *p2 = getCaliVariable();
-	int *var = getCaliVariable();
+	vmvar_t *p2 = getCaliVariable();
+	vmvar_t *var = getCaliVariable();
 	
 	*var = 1;
 	
@@ -25,8 +25,8 @@ static void ExistKeyFile() {

 static void CheckProtectFile() {
 	const char *p1 = sl_getString(0);
-	int *p2 = getCaliVariable();
-	int *var = getCaliVariable();
+	vmvar_t *p2 = getCaliVariable();
+	vmvar_t *var = getCaliVariable();
 	
 	*var = 1;

@@ -35,8 +35,8 @@ static void CheckProtectFile() {

 static void CreateKeyFile() {
 	const char *p1 = sl_getString(0);
-	int *p2 = getCaliVariable();
-	int *var = getCaliVariable();
+	vmvar_t *p2 = getCaliVariable();
+	vmvar_t *var = getCaliVariable();
 	
 	*var = 1;

@@ -42,7 +42,7 @@
 // #include "alpha_plane.h"
 #include "surface.h"
 #include "graph.h"
-// #include "graph2.h"
+#include "graph_blend_amap.h"

 #include "effectcopy.h"
 #include "ngraph.h"
@@ -68,37 +68,19 @@ static int find_null_surface() {
 	return 0;
 }

-static int sf_free_one(int no) {
-	surface_t *s;
-	if (no == 0) return NG;
-	
-	s = suf[no];
-	if (s == NULL) return NG;
-	
-	if (s->pixel) free(s->pixel);
-	if (s->alpha) free(s->alpha);
-	free(s);
-	
+static void sf_free_one(int no) {
+	if (no == 0 || !suf[no]) return;
+	sf_free(suf[no]);
 	suf[no] = NULL;
 	pre_freesurfno = no;
-	return OK;
 }

-static int sf_free_all() {
-	int i;
-	surface_t *s;
-	
-	for (i = 1; i < MAX_SURFACE; i++) {
-		if (suf[i] == NULL) continue;
-		s = suf[i];
-		if (s->pixel) free(s->pixel);
-		if (s->alpha) free(s->alpha);
-		free(s);
+static void sf_free_all() {
+	for (int i = 1; i < MAX_SURFACE; i++) {
+		sf_free(suf[i]);
 		suf[i] = NULL;
 	}
-	
 	pre_freesurfno = 1;
-	return OK;
 }

 static surface_t *sf_get(int no) {
@@ -151,18 +133,15 @@ static void Create() {
 	           作成に失敗した場合は 0 を返す
 	   width : surface の幅
 	   height: surface の高さ
-	   bpp   : surface の深さ(オリジナルでは24bppのみサポート,
-	                          xsystem35 では display の depth と同じ)
+	   bpp   : surface の深さ(24bppのみサポート)
 	*/
-	int *var   = getCaliVariable();
+	vmvar_t *var   = getCaliVariable();
 	int width  = getCaliValue();
 	int height = getCaliValue();
 	int bpp    = getCaliValue();
-	surface_t *s;
-	
-	//get_surface0();
-	s = sf_create_surface(width, height, sf_get(0)->depth);
-	
+
+	surface_t *s = sf_create_surface(width, height);
+
 	if (s == NULL) {
 		*var = 0;
 	} else {
@@ -183,14 +162,13 @@ static void CreatePixelOnly() {
 	   height: surface の高さ
 	   bpp   : surface の深さ(24bpp only)
 	*/
-	int *var   = getCaliVariable();
+	vmvar_t *var   = getCaliVariable();
 	int width  = getCaliValue();
 	int height = getCaliValue();
 	int bpp    = getCaliValue();
-	surface_t *s;
-	
-	s = sf_create_pixel(width, height, sf_get(0)->depth);
-	
+
+	surface_t *s = sf_create_pixel(width, height);
+
 	if (s == NULL) {
 		*var = 0;
 	} else {
@@ -210,7 +188,7 @@ static void CreateAMapOnly() {
 	   width : surface の幅
 	   height: surface の高さ
 	*/
-	int *var   = getCaliVariable();
+	vmvar_t *var   = getCaliVariable();
 	int width  = getCaliValue();
 	int height = getCaliValue();
 	surface_t *s;
@@ -236,7 +214,7 @@ static void IsSurface() {
 	   var : 結果を返す変数。surface ならば 1, !surface ならば 0
 	*/
 	int p1   = getCaliValue();
-	int *var = getCaliVariable();
+	vmvar_t *var = getCaliVariable();

 	*var = sf_get(p1) ? 1 : 0;

@@ -251,7 +229,7 @@ static void IsPixel() {
 	   var : 結果を返す変数。pixel ならば 1, !pixel ならば 0
 	*/
 	int p1   = getCaliValue();
-	int *var = getCaliVariable();
+	vmvar_t *var = getCaliVariable();
 	surface_t *s;
 	
 	s = sf_get(p1);
@@ -259,7 +237,7 @@ static void IsPixel() {
 	if (s == NULL) {
 		*var = 0;
 	} else {
-		*var = s->pixel ? 1 : 0;
+		*var = s->sdl_surface ? 1 : 0;
 	}
 	
 	TRACE("Gpx.IsPixel %d,%p:", p1, var);
@@ -273,7 +251,7 @@ static void IsAlpha() {
 	   var : 結果を返す変数。alpha ならば 1, !alpha ならば 0
 	*/
 	int p1   = getCaliValue();
-	int *var = getCaliVariable();
+	vmvar_t *var = getCaliVariable();
 	surface_t *s;
 	
 	s = sf_get(p1);
@@ -295,7 +273,7 @@ static void GetWidth() {
 	   var : 結果を返す変数。
 	*/
 	int p1   = getCaliValue();
-	int *var = getCaliVariable();
+	vmvar_t *var = getCaliVariable();
 	surface_t *s;
 	
 	s = sf_get(p1);
@@ -317,7 +295,7 @@ static void GetHeight() {
 	   var : 結果を返す変数。
 	*/
 	int p1   = getCaliValue();
-	int *var = getCaliVariable();
+	vmvar_t *var = getCaliVariable();
 	surface_t *s;
 	
 	s = sf_get(p1);
@@ -332,7 +310,7 @@ static void GetHeight() {
 }

 static void GetCreatedSurface() { /* not used ? */
-	int *var = getCaliVariable();
+	vmvar_t *var = getCaliVariable();
 	
 	TRACE_UNIMPLEMENTED("Gpx.GetCreatedSurface %p:", var);
 }
@@ -344,7 +322,7 @@ static void LoadCG() {
 	   var : 作成した surface の番号を返す変数
 	   p1  : 読み込む CG の番号
 	*/
-	int *var = getCaliVariable();
+	vmvar_t *var = getCaliVariable();
 	int p1   = getCaliValue();
 	
 	*var = load_cg_main(p1 -1);
@@ -353,14 +331,14 @@ static void LoadCG() {
 }

 static void GetCGPosX() { /* not useed ? */
-	int *var = getCaliVariable();
+	vmvar_t *var = getCaliVariable();
 	int p1 = getCaliValue();
 	
 	TRACE_UNIMPLEMENTED("Gpx.GetCgPosX %p,%d:", var, p1);
 }

 static void GetCGPosY() { /* not useed ? */
-	int *var = getCaliVariable();
+	vmvar_t *var = getCaliVariable();
 	int p1 = getCaliValue();
 	
 	TRACE_UNIMPLEMENTED("Gpx.GetCgPosY %p,%d:", var, p1);
@@ -1139,7 +1117,7 @@ static void EffectCopy() {
 	int sw   = getCaliValue();
 	int sh   = getCaliValue();
 	int time = getCaliValue();
-	int *var = getCaliVariable();
+	vmvar_t *var = getCaliVariable();

 	TRACE("Gpx.EffectCopy %d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%p:", no, dx, dy, ss1, sx1, sy1, ss2, sx2, sy2, sw, sh, time, var);

@@ -33,9 +33,7 @@
 #include "ags.h"
 #include "pms.h"
 #include "qnt.h"
-#ifdef HAVE_WEBP
-#include "webp.h"
-#endif
+#include "gfx.h"
 #include "ngraph.h"
 #include "dri.h"
 #include "ald_manager.h"
@@ -53,10 +51,6 @@ static CG_TYPE check_cgformat(uint8_t *data) {
 		return ALCG_PMS8;
 	} else if (pms64k_checkfmt(data)) {
 		return ALCG_PMS16;
-#ifdef HAVE_WEBP
-	} else if (webp_checkfmt(data)) {
-		return ALCG_WEBP;
-#endif
 	}
 	return ALCG_UNKNOWN;
 }
@@ -68,65 +62,38 @@ static CG_TYPE check_cgformat(uint8_t *data) {
 * @return CG が展開された surface
 *         未知の形式のときは NULL が返る
 */
-surface_t *sf_getcg(void *b, size_t size) {
-	surface_t *sf = NULL;
-	int type;
-	cgdata *cg = NULL;
-	
-	type = check_cgformat(b);
-	switch(type) {
+static surface_t *sf_getcg(void *b, size_t size) {
+	surface_t *sf;
+	cgdata *cg;
+
+	switch(check_cgformat(b)) {
 	case ALCG_PMS8:
+		// Load as an alpha map
 		cg = pms256_extract(b);
+		cg->alpha = cg->pic;
+		cg->pic = NULL;
+		sf = sf_create_alpha(cg->width, cg->height);
+		gfx_drawImageAlphaMap(cg, sf, 0, 0);
 		break;
 	case ALCG_PMS16:
 		cg = pms64k_extract(b);
+		sf = cg->alpha
+			? sf_create_surface(cg->width, cg->height)
+			: sf_create_pixel(cg->width, cg->height);
+		gfx_drawImage16(cg, sf, 0, 0, 255, false);
 		break;
 	case ALCG_QNT:
 		cg = qnt_extract(b);
+		sf = cg->alpha
+			? sf_create_surface(cg->width, cg->height)
+			: sf_create_pixel(cg->width, cg->height);
+		gfx_drawImage24(cg, sf, 0, 0, 255);
 		break;
-#ifdef HAVE_WEBP
-	case ALCG_WEBP:
-		cg = webp_extract(b, size);
-		break;
-#endif
 	default:
-		break;
-	}
-	
-	if (cg == NULL) {
 		WARNING("Unknown Cg Type");
 		return NULL;
 	}
-	
-	switch(type) {
-	case ALCG_PMS8:
-		sf = sf_create_alpha(cg->width, cg->height);
-		gr_draw_amap(sf, cg->x, cg->y, cg->pic, cg->width, cg->height, cg->width);
-		break;
-		
-	case ALCG_PMS16:
-		if (cg->alpha) {
-			sf = sf_create_surface(cg->width, cg->height, sf0->depth);
-			gr_drawimage16(sf, cg, cg->x, cg->y);
-			gr_draw_amap(sf, cg->x, cg->y, cg->alpha, cg->width, cg->height, cg->width);
-		} else {
-			sf = sf_create_pixel(cg->width, cg->height, sf0->depth);
-			gr_drawimage16(sf, cg, cg->x, cg->y);
-		}
-		break;
-                
-	case ALCG_QNT:
-	case ALCG_WEBP:
-		if (cg->alpha) {
-			sf = sf_create_surface(cg->width, cg->height, sf0->depth);
-			gr_drawimage24(sf, cg, cg->x, cg->y);
-			gr_draw_amap(sf, cg->x, cg->y, cg->alpha, cg->width, cg->height, cg->width);
-		} else {
-			sf = sf_create_pixel(cg->width, cg->height, sf0->depth);
-			gr_drawimage24(sf, cg, cg->x, cg->y);
-		}
-		break;
-	}
+
 	cgdata_free(cg);
 	return sf;
 }
@@ -5,7 +5,7 @@
 #include "portab.h"
 #include "system.h"
 #include "surface.h"
-#include "sdl_core.h"
+#include "effect.h"
 #include "ags.h"
 #include "input.h"
 #include "graph.h"
@@ -17,24 +17,24 @@ void gpx_effect(int no,
 		surface_t *src, int sx, int sy,
 		int width, int height,
 		int time,
-		int *endtype) {
+		vmvar_t *endtype) {
 	surface_t *write = nact->ags.dib;
 	if (!gr_clip(dst, &dx, &dy, &width, &height, write, &wx, &wy)) return;
 	if (!gr_clip(src, &sx, &sy, &width, &height, write, &wx, &wy)) return;

 	*endtype = 0;

-	enum sdl_effect_type type = from_sact_effect(no);
+	enum effect_type type = from_sact_effect(no);
 	if (type == EFFECT_INVALID) {
 		WARNING("Unimplemented effect %d", no);
 		type = EFFECT_CROSSFADE;
 	}
 	SDL_Rect rect = { wx, wy, width, height };
-	struct sdl_effect *eff = sdl_effect_init(&rect, dst, dx, dy, src, sx, sy, type);
+	struct effect *eff = effect_init(&rect, dst, dx, dy, src, sx, sy, type);
 	if (!time)
 		time = (no == SACT_EFFECT_CROSSFADE_DOWN || no == SACT_EFFECT_CROSSFADE_UP) ? 1150 : 2700;
-	ags_runEffect(time, FALSE, (ags_EffectStepFunc)sdl_effect_step, eff);
-	sdl_effect_finish(eff);
+	ags_runEffect(time, false, (ags_EffectStepFunc)effect_step, eff);
+	effect_finish(eff);

 	switch (no) {
 	case SACT_EFFECT_FADEOUT:
@@ -1,6 +1,7 @@
 #ifndef __GLEFFECTCOPY_H__
 #define __GLEFFECTCOPY_H__

+#include "portab.h"
 #include "surface.h"

 extern void gpx_effect(int no,
@@ -9,6 +10,6 @@ extern void gpx_effect(int no,
 		       surface_t *src, int sx, int sy,
 		       int width, int height,
 		       int time,
-		       int *endtype);
+		       vmvar_t *endtype);

 #endif /* __GLEFFECTCOPY_H__ */
@@ -3,25 +3,15 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <SDL.h>

 #include "portab.h"
 #include "system.h"
 #include "surface.h"
 #include "graph.h"
 #include "ngraph.h"
-#include "nact.h"
-
-/*
-  gr_xxxx はクリッピングあり
-  gre_xxxx はクリッピングなし
-*/
-
-#undef WARNING
-#define WARNING(...)
-
-#undef NOTICE
-#define NOTICE(...)
-
+#include "ags.h"
+#include "gfx.h"

 /**
 * surface から surface にコピーなどをする際に、転送元と転送先のsurface
@@ -36,80 +26,16 @@
 * @param ds: 転送先surface
 * @param dx: 転送先Ｘ座標
 * @param dy: 転送先Ｙ座標
- * @return TRUE -> 描画領域がある
- *         FALSE-> 転送領域の高さや幅が０以下になったり、転送元、転送先の座標が
+ * @return true -> 描画領域がある
+ *         false-> 転送領域の高さや幅が０以下になったり、転送元、転送先の座標が
 *                 surfaceの範囲外になり、描画領域がなくなった。
 *         それぞれの引数は適宜変更されている
 */
-boolean gr_clip(surface_t *ss, int *sx, int *sy, int *sw, int *sh, surface_t *ds, int *dx, int *dy) {
-	int w, h;
-	
-	if (ss == NULL) {
-		WARNING("ss surface is null");
-		return FALSE;
-	}
-	if (ss == NULL) {
-		WARNING("ss surface is null");
-		return FALSE;
-	}
-	
-	if (*sx > ss->width) {
-		WARNING("sx is too large (sx=%d,width=%d)", *sx, ss->width);
-		return FALSE;
-	}
-	if (*sy > ss->height) {
-		WARNING("sy is too large (sy=%d,height=%d)", *sy, ss->height);
-		return FALSE;
-	}
-	
-	if (*sx < 0) {
-		WARNING("sx is too small (sx=%d)", *sx);
-		return FALSE;
-	}
-	if (*sy < 0) {
-		WARNING("sy is too small (sy=%d)", *sy);
-		return FALSE;
-	}
-	
-	if (*dx > ds->width) {
-		WARNING("dx is too large (dx=%d,width=%d)", *dx, ds->width);
-		return FALSE;
-	}
-	if (*dy > ds->height) {
-		WARNING("dy is too large (dy=%d,height=%d)", *dy, ds->height);
-		return FALSE;
-	}
-	
-	w = *sw;
-	h = *sh;
-	
-	if (*dx < 0) {
-		*sx -= *dx; *sw += *dx; *dx = 0;
-	}
-	if (*dy < 0) {
-		*sy -= *dy; *sh += *dy; *dy = 0;
-	}
-	
-	*sw = min(ss->width  - *sx, min(ds->width  - *dx, *sw));
-	*sh = min(ss->height - *sy, min(ds->height - *dy, *sh));
-
-	if (*sw <= 0) {
-		WARNING("sw become <=0");
-		return FALSE;
-	}
-	if (*sh <= 0) {
-		WARNING("sh become <=0");
-		return FALSE;
-	}
-	
-	if (*sw != w) {
-		NOTICE("width change %d -> %d", w, *sw);
-	}
-	if (*sh != h) {
-		NOTICE("height change %d -> %d", h, *sh);
-	}
-	
-	return TRUE;
+bool gr_clip(surface_t *ss, int *sx, int *sy, int *sw, int *sh, surface_t *ds, int *dx, int *dy) {
+	if (!ss || !ds) return false;
+	SDL_Rect src_window = { 0, 0, ss->width, ss->height };
+	SDL_Rect dst_window = { 0, 0, ds->width, ds->height };
+	return ags_clipCopyRect(&src_window, &dst_window, sx, sy, dx, dy, sw, sh);
 }

 /**
@@ -120,67 +46,75 @@ boolean gr_clip(surface_t *ss, int *sx, int *sy, int *sw, int *sh, surface_t *ds
 * @param sy: 描画開始Ｙ座標
 * @param sw: 描画幅
 * @param sh: 描画高さ
- * @return TRUE -> 描画領域がある
- *         FALSE-> 描画領域の高さや幅が０以下になったり、描画開始座標が
+ * @return true -> 描画領域がある
+ *         false-> 描画領域の高さや幅が０以下になったり、描画開始座標が
 *                 surfaceの範囲外になり、描画領域がなくなった。
 *         それぞれの引数は適宜変更されている
 */
-boolean gr_clip_xywh(surface_t *ss, int *sx, int *sy, int *sw, int *sh) {
-	int w, h;
-	
-	if (ss == NULL) {
-		WARNING("ss surface is null");
-		return FALSE;
-	}
-	
-	if (*sx > ss->width) {
-		WARNING("sx is too large (sx=%d,width=%d)", *sx, ss->width);
-		return FALSE;
-	}
-	if (*sy > ss->height) {
-		WARNING("sy is too large (sy=%d,height=%d)", *sy, ss->height);
-		return FALSE;
-	}
-	
-	w = *sw;
-	h = *sh;
-	
-	if (*sx < 0) {
-		*sw += *sx; *sx = 0;
-	}
-	if (*sy < 0) {
-		*sh += *sy; *sy = 0;
-	}
-	
-	*sw = min(ss->width  - *sx, *sw);
-	*sh = min(ss->height - *sy, *sh);
-	
-	if (*sw <= 0) {
-		WARNING("sw become <=0");
-		return FALSE;
-	}
-	if (*sh <= 0) {
-		WARNING("sh become <=0");
-		return FALSE;
-	}
-	
-	if (*sw != w) {
-		NOTICE("width change %d -> %d", w, *sw);
-	}
-	if (*sh != h) {
-		NOTICE("height change %d -> %d", h, *sh);
-	}
-	
-	return TRUE;
+bool gr_clip_xywh(surface_t *ss, int *sx, int *sy, int *sw, int *sh) {
+	if (!ss) return false;
+	SDL_Rect rect = {*sx, *sy, *sw, *sh};
+	if (!SDL_IntersectRect(&rect, &(SDL_Rect){ 0, 0, ss->width, ss->height }, &rect))
+		return false;
+	*sx = rect.x;
+	*sy = rect.y;
+	*sw = rect.w;
+	*sh = rect.h;
+	return true;
 }

 void gr_init() {
 }

+void gr_copy(surface_t *dst, int dx, int dy, surface_t *src, int sx, int sy, int sw, int sh) {
+	if (!dst->sdl_surface || !src->sdl_surface) return;
+	if (!gr_clip(src, &sx, &sy, &sw, &sh, dst, &dx, &dy)) return;
+
+	SDL_Rect src_rect = {sx, sy, sw, sh};
+	SDL_Rect dst_rect = {dx, dy, sw, sh};
+	if (dst == src) {
+		SDL_Rect r;
+		if (SDL_IntersectRect(&src_rect, &dst_rect, &r)) {
+			SDL_Surface *view = gfx_createSurfaceView(src->sdl_surface, sx, sy, sw, sh);
+			SDL_Surface *tmp = SDL_ConvertSurface(view, dst->sdl_surface->format, 0);
+			src_rect.x = 0;
+			src_rect.y = 0;
+			SDL_LowerBlit(tmp, &src_rect, dst->sdl_surface, &dst_rect);
+			SDL_FreeSurface(tmp);
+			SDL_FreeSurface(view);
+			return;
+		}
+	}
+	SDL_LowerBlit(src->sdl_surface, &src_rect, dst->sdl_surface, &dst_rect);
+}
+
+// Copy the specified surface area with brightness lv/255 times
+void gr_copy_bright(surface_t *dst, int dx, int dy, surface_t *src, int sx, int sy, int width, int height, int lv) {
+	SDL_Rect src_rect = {sx, sy, width, height};
+	SDL_Rect dst_rect = {dx, dy, width, height};
+	SDL_SetSurfaceColorMod(src->sdl_surface, lv, lv, lv);
+	SDL_BlitSurface(src->sdl_surface, &src_rect, dst->sdl_surface, &dst_rect);
+	SDL_SetSurfaceColorMod(src->sdl_surface, 255, 255, 255);
+}
+
+void gr_fill(surface_t *dst, int dx, int dy, int dw, int dh, int r, int g, int b) {
+	SDL_Rect rect = {dx, dy, dw, dh};
+	uint32_t color = SDL_MapRGB(dst->sdl_surface->format, r, g, b);
+	SDL_FillRect(dst->sdl_surface, &rect, color);
+}
+
+void gr_copy_stretch(surface_t *dst, int dx, int dy, int dw, int dh, surface_t *src, int sx, int sy, int sw, int sh) {
+	SDL_Rect srcrect = {sx, sy, sw, sh};
+	SDL_Rect dstrect = {dx, dy, dw, dh};
+	SDL_BlitScaled(src->sdl_surface, &srcrect, dst->sdl_surface, &dstrect);
+}

 void gr_blend(surface_t *dst, int dx, int dy, surface_t *src, int sx, int sy, int width, int height, int lv) {
-	if (!gr_clip(src, &sx, &sy, &width, &height, dst, &dx, &dy)) return;
-	gre_Blend(dst, dx, dy, dst, dx, dy, src, sx, sy, width, height, lv);
+	SDL_SetSurfaceBlendMode(src->sdl_surface, SDL_BLENDMODE_BLEND);
+	SDL_SetSurfaceAlphaMod(src->sdl_surface, lv);
+	SDL_BlitSurface(src->sdl_surface, &(SDL_Rect){sx, sy, width, height}, dst->sdl_surface, &(SDL_Rect){dx, dy, width, height});
+	SDL_SetSurfaceAlphaMod(src->sdl_surface, 255);
+	SDL_SetSurfaceBlendMode(src->sdl_surface, SDL_BLENDMODE_NONE);
 }

 void gr_blend_src_bright(surface_t *dst, int dx, int dy, surface_t *src, int sx, int sy, int width, int height, int alpha, int rate) {
@@ -271,56 +205,34 @@ void gr_copy_stretch_blend_alpha_map(surface_t *dst, int dx, int dy, int dw, int
 		row[x] = xd; xd += a1;
 	}

-	switch(dst->depth) {
-	case 16:
-	{
-		uint16_t *yls, *yld;
-		uint8_t *yla;
-		
-		for (y = 0; y < dh; y++) {
-			yls = (uint16_t *)(sp + *(y + col) * src->bytes_per_line);
-			yld = (uint16_t *)(dp +   y        * dst->bytes_per_line);
-			yla = (uint8_t *)(sa + *(y + col) * src->width);
-			for (x = 0; x < dw; x++) {
-				*(yld + x) = ALPHABLEND16(*(yls+ *(row + x)), *(yld+x), *(yla+*(row+x)));
-			}
-			while (y < dh - 1 && *(col + y) == *(col + y + 1)) {
-				yld += dst->width;
-				for (x = 0; x < dw; x++) {
-					*(yld + x) = ALPHABLEND16(*(yls+ *(row+x)), *(yld+x), *(yla+*(row+x)));
-				}
-				y++;
-			}
+	for (y = 0; y < dh; y++) {
+		uint32_t *yls = (uint32_t *)(sp + *(y + col) * src->sdl_surface->pitch);
+		uint32_t *yld = (uint32_t *)(dp +   y        * dst->sdl_surface->pitch);
+		uint8_t  *yla = (uint8_t  *)(sa + *(y + col) * src->width);
+		for (x = 0; x < dw; x++) {
+			*(yld + x) = ALPHABLEND24(*(yls+ *(row + x)), *(yld+x), *(yla+*(row+x)));
 		}
-		break;
-	}
-	case 24:
-	case 32:
-	{
-		uint32_t *yls, *yld;
-		uint8_t  *yla;
-		
-		for (y = 0; y < dh; y++) {
-			yls = (uint32_t *)(sp + *(y + col) * src->bytes_per_line);
-			yld = (uint32_t *)(dp +   y        * dst->bytes_per_line);
-			yla = (uint8_t  *)(sa + *(y + col) * src->width);
+		while (y < dh - 1 && *(col + y) == *(col + y + 1)) {
+			yld += dst->width;
 			for (x = 0; x < dw; x++) {
-				*(yld + x) = ALPHABLEND24(*(yls+ *(row + x)), *(yld+x), *(yla+*(row+x)));
-			}
-			while (y < dh - 1 && *(col + y) == *(col + y + 1)) {
-				yld += dst->width;
-				for (x = 0; x < dw; x++) {
-					*(yld + x) = ALPHABLEND24(*(yls+ *(row+x)), *(yld+x), *(yla+*(row+x)));
-				}
-				y++;
+				*(yld + x) = ALPHABLEND24(*(yls+ *(row+x)), *(yld+x), *(yla+*(row+x)));
 			}
+			y++;
 		}
-		break;
-	}
 	}
 	
 	free(row);
 	free(col);
 }

+// Fill the rectangle with the specified color (rgb) and blend rate (lv)
+void gr_fill_alpha_color(surface_t *dst, int dx, int dy, int dw, int dh, int r, int g, int b, int lv) {
+	SDL_Surface *src = SDL_CreateRGBSurfaceWithFormat(0, dw, dh, 32, SDL_PIXELFORMAT_ARGB8888);
+	SDL_FillRect(src, NULL, SDL_MapRGBA(src->format, r, g, b, lv));
+	SDL_SetSurfaceBlendMode(src, SDL_BLENDMODE_BLEND);
+	SDL_Rect dstrect = {dx, dy, dw, dh};
+	SDL_BlitSurface(src, NULL, dst->sdl_surface, &dstrect);
+	SDL_FreeSurface(src);
+}
+
 #include "graph2.c"
@@ -0,0 +1,23 @@
+#ifndef __GRAPH_H__
+#define __GRAPH_H__
+
+#include "config.h"
+#include "surface.h"
+
+void gr_init();
+
+void gr_copy(surface_t *dst, int dx, int dy, surface_t *src, int sx, int sy, int sw, int sh);
+void gr_copy_bright(surface_t *dst, int dx, int dy, surface_t *src, int sx, int sy, int width, int height, int lv);
+void gr_fill(surface_t *dst, int dx, int dy, int dw, int dh, int r, int g, int b);
+void gr_copy_stretch(surface_t *dst, int dx, int dy, int dw, int dh, surface_t *src, int sx, int sy, int sw, int sh);
+void gr_blend(surface_t *dst, int dx, int dy, surface_t *src, int sx, int sy, int width, int height, int lv);
+void gr_copy_stretch_blend_alpha_map(surface_t *dst, int dx, int dy, int dw, int dh, surface_t *src, int sx, int sy, int sw, int sh);
+void gr_fill_alpha_color(surface_t *dst, int dx, int dy, int dw, int dh, int r, int g, int b, int lv);
+void gr_fill_alpha_overborder(surface_t *dst, int dx, int dy, int dw, int dh, int s, int d);
+void gr_fill_alpha_underborder(surface_t *dst, int dx, int dy, int dw, int dh, int s, int d);
+void gr_copy_alpha_map_sprite(surface_t *dst, int dx, int dy, surface_t *src, int sx, int sy, int sw, int sh, int cl);
+void gr_blend_alpha_wds_stretch2x2(surface_t *src1, int sx1, int sy1, surface_t *src2, int sx2, int sy2, int sw, int sh, surface_t *dst, int dx, int dy);
+void gr_blend_alpha_wds(surface_t *src1, int sx1, int sy1, surface_t *src2, int sx2, int sy2, int sw, int sh, surface_t *dst, int dx, int dy);
+
+#endif /* __GRAPH_H__ */
+
@@ -75,7 +75,7 @@ void gr_copy_alpha_map_sprite(surface_t *dst, int dx, int dy, surface_t *src, in
 }

 void gr_blend_alpha_wds_stretch2x2(surface_t *src1, int sx1, int sy1, surface_t *src2, int sx2, int sy2, int sw, int sh, surface_t *dst, int dx, int dy) {
-	surface_t *t = sf_create_surface(sw * 2, sh * 2, dst->depth);
+	surface_t *t = sf_create_surface(sw * 2, sh * 2);
 	
 	gr_copy_stretch(t, 0, 0, sw * 2, sh * 2, src2, sx2, sy2, sw, sh);
 	gr_blend_alpha_wds(t, 0, 0, src1, sx1, sy1, sw * 2, sh * 2, dst, dx, dy);
@@ -93,45 +93,16 @@ void gr_blend_alpha_wds(surface_t *src1, int sx1, int sy1, surface_t *src2, int
 	sa   = GETOFFSET_ALPHA(src1, sx1, sy1);
 	dp   = GETOFFSET_PIXEL(dst, dx, dy);
 	
-	switch(dst->depth) {
-	case 16:
-		{
-			uint16_t *yls1, *yls2, *yld;
-			uint8_t *yla;
-			
-			for (y = 0; y < sh; y++) {
-				yls1 = (uint16_t *)(sp1  + y * src1->bytes_per_line);
-				yls2 = (uint16_t *)(sp2  + y * src2->bytes_per_line);
-				yld  = (uint16_t *)(dp   + y * dst->bytes_per_line);
-				yla  = (uint8_t *)(sa   + y * src1->width);
-				
-				for (x = 0; x < sw; x++) {
-					*yld = SUTURADD16(*yls1, ALPHABLEND16(*yls1, *yls2, *yla));
-					//*yld = SUTURADD16(*yls1, ALPHALEVEL16(*yls2, *yla));
-					yls1++; yls2++; yld++; yla++;
-				}
-			}
-		}
-		break;
-	case 24:
-	case 32:
-	{
-		uint32_t *yls1, *yls2, *yld;
-		uint8_t *yla;
+	for (y = 0; y < sh; y++) {
+		uint32_t *yls1 = (uint32_t *)(sp1  + y * src1->sdl_surface->pitch);
+		uint32_t *yls2 = (uint32_t *)(sp2  + y * src2->sdl_surface->pitch);
+		uint32_t *yld  = (uint32_t *)(dp   + y * dst->sdl_surface->pitch);
+		uint8_t  *yla  = (uint8_t  *)(sa   + y * src1->width);
 		
-		for (y = 0; y < sh; y++) {
-			yls1 = (uint32_t *)(sp1  + y * src1->bytes_per_line);
-			yls2 = (uint32_t *)(sp2  + y * src2->bytes_per_line);
-			yld  = (uint32_t *)(dp   + y * dst->bytes_per_line);
-			yla  = (uint8_t  *)(sa   + y * src1->width);
-			
-			for (x = 0; x < sw; x++) {
-				*yld = SUTURADD24(*yls1, ALPHABLEND24(*yls1, *yls2, *yla));
-				yls1++; yls2++; yld++; yla++;
-			}
+		for (x = 0; x < sw; x++) {
+			*yld = SUTURADD24(*yls1, ALPHABLEND24(*yls1, *yls2, *yla));
+			yls1++; yls2++; yld++; yla++;
 		}
-		break;
-	}
 	}
 }

@@ -41,22 +41,22 @@
 * @param sw:  転送幅
 * @param sh:  転送高さ
 */
-int gr_copy_alpha_map(surface_t *dst, int dx, int dy, surface_t *src, int sx, int sy, int sw, int sh) {
+void gr_copy_alpha_map(surface_t *dst, int dx, int dy, surface_t *src, int sx, int sy, int sw, int sh) {
 	uint8_t *sp, *dp;
 	
-	if (!gr_clip(src, &sx, &sy, &sw, &sh, dst, &dx, &dy)) return NG;
+	if (!gr_clip(src, &sx, &sy, &sw, &sh, dst, &dx, &dy)) return;
 	
 	sp = GETOFFSET_ALPHA(src, sx, sy);
 	dp = GETOFFSET_ALPHA(dst, dx, dy);

 	if (sp == NULL) {
 		WARNING("src alpha NULL");
-		return NG;
+		return;
 	}
 	
 	if (dp == NULL) {
 		WARNING("dst alpha NULL");
-		return NG;
+		return;
 	}
 	
 	if (src == dst) {
@@ -82,6 +82,4 @@ int gr_copy_alpha_map(surface_t *dst, int dx, int dy, surface_t *src, int sx, in
 			dp += dst->width;
 		}
 	}
-	
-	return OK;
 }
@@ -6,11 +6,11 @@
 #include "ngraph.h"
 #include "ags.h"

-int gr_fill_alpha_map(surface_t *dst, int dx, int dy, int dw, int dh, int lv) {
+void gr_fill_alpha_map(surface_t *dst, int dx, int dy, int dw, int dh, int lv) {
 	uint8_t *a;
 	
 	if (!gr_clip_xywh(dst, &dx, &dy, &dw, &dh)) {
-		return NG;
+		return;
 	}
 	
 	a = GETOFFSET_ALPHA(dst, dx, dy);
@@ -19,6 +19,4 @@ int gr_fill_alpha_map(surface_t *dst, int dx, int dy, int dw, int dh, int lv) {
 		memset(a, lv, dw);
 		a += dst->width;
 	}
-	
-	return OK;
 }
@@ -0,0 +1,33 @@
+#ifndef __NGRAPH_H__
+#define __NGRAPH_H__
+
+#include "portab.h"
+#include "nact.h"
+#include "ags.h"
+#include "surface.h"
+#include "graph.h"
+
+#define sf0 nact->ags.dib
+
+struct SDL_Surface;
+
+// DLL 用 graphic 関連関数 
+
+/* in graph.c */
+bool gr_clip(surface_t *ss, int *sx, int *sy, int *sw, int *sh, surface_t *ds, int *dx, int *dy);
+bool gr_clip_xywh(surface_t *ss, int *sx, int *sy, int *sw, int *sh);
+
+/* in graph_fillrect_amap.c */
+void gr_fill_alpha_map(surface_t *dst, int dx, int dy, int dw, int dh, int lv);
+
+/* in graph_copy_amap.c */
+void gr_copy_alpha_map(surface_t *dst, int dx, int dy, surface_t *src, int sx, int sy, int sw, int sh);
+
+// /* in graph_bright_dst_only.c */
+#define gr_bright_dst_only(dst,dx,dy,w,h,lv) gr_copy_bright(dst,dx,dy,dst,dx,dy,w,h,lv)
+// void gr_bright_dst_only(surface_t *dst, int dx, int dy, int w, int h, int lv);
+
+/* defined in cg.c */
+surface_t *sf_loadcg_no(int no);
+
+#endif /* __GRAPH_H__ */
@@ -0,0 +1,80 @@
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <SDL.h>
+
+#include "portab.h"
+#include "surface.h"
+#include "system.h"
+
+static surface_t *create(int width, int height, bool has_pixel, bool has_alpha) {
+	surface_t *s = calloc(1, sizeof(surface_t));
+	s->width = width;
+	s->height = height;
+
+	if (has_pixel) {
+		s->sdl_surface = SDL_CreateRGBSurfaceWithFormat(0, width, height, 32, SDL_PIXELFORMAT_RGB888);
+	}
+	
+	if (has_alpha) {
+		s->alpha = calloc(width * (height +1), sizeof(uint8_t));
+	}
+	
+	return s;
+}
+
+// Create a surface with pixel and alpha data
+surface_t *sf_create_surface(int width, int height) {
+	return create(width, height, true, true);
+}
+
+// Create a surface with alpha data only
+surface_t *sf_create_alpha(int width, int height) {
+	return create(width, height, false, true);
+}
+
+// Create a surface with pixel data only
+surface_t *sf_create_pixel(int width, int height) {
+	return create(width, height, true, false);
+}
+
+/**
+ * surfaceオブジェクトの開放
+ * @param s: 開放するオブジェクト
+ * @return:  なし
+ */
+void sf_free(surface_t *s) {
+	if (s == NULL) return;
+	if (s->sdl_surface) SDL_FreeSurface(s->sdl_surface);
+	if (s->alpha) free(s->alpha);
+	free(s);
+}
+
+/**
+ * surface の複製を作成(dupulicate)
+ * @param in: 複製もと
+ * @return  : 複製したsurface
+ */
+surface_t *sf_dup(surface_t *in) {
+	surface_t *sf;
+	int len;
+	
+	if (in == NULL) return NULL;
+	
+	sf = malloc(sizeof(surface_t));
+	memcpy(sf, in, sizeof(surface_t));
+	
+	if (in->sdl_surface) {
+		sf->sdl_surface = SDL_ConvertSurface(in->sdl_surface, in->sdl_surface->format, 0);
+	}
+	
+	if (in->alpha) {
+		len = sf->width * sf->height;
+		sf->alpha = malloc(sizeof(uint8_t) * (len + sf->width));
+		memcpy(sf->alpha, in->alpha, len);
+	}
+	
+	return sf;
+}
@@ -0,0 +1,13 @@
+#ifndef __SURFACE_H__
+#define __SURFACE_H__
+
+#include "portab.h"
+#include "ags.h"
+
+extern surface_t *sf_create_surface(int width, int height);
+extern surface_t *sf_create_alpha(int width, int height);
+extern surface_t *sf_create_pixel(int width, int height);
+extern void       sf_free(surface_t *s);
+extern surface_t *sf_dup(surface_t *in);
+
+#endif /* __SURFACE_H__ */
@@ -53,7 +53,7 @@ static void RandMTGet() {
 	  var: 結果を返す変数
 	*/
 	int num  = getCaliValue();
-	int *var = getCaliVariable();
+	vmvar_t *var = getCaliVariable();
 	
 	if (num == 0 || num == 1) {
 		*var = num;
@@ -83,7 +83,7 @@ static void RandMTGetNumTable() {

 	  var: 乱数を格納する変数
 	*/
-	int *var = getCaliVariable();
+	vmvar_t *var = getCaliVariable();
 	
 	*var = (int)(genrand() * numtblmax) + 1;
 	
@@ -13,11 +13,11 @@
 #include "msgskip.h"
 #include "utfsjis.h"

-static boolean valid;
+static bool valid;
 static int action;

 static void Init() {
-	int *p1 = getCaliVariable();
+	vmvar_t *p1 = getCaliVariable();
 	int p2 = getCaliValue(); /* ISys3x */
 	int p3 = getCaliValue();
 	int p4 = getCaliValue();
@@ -30,7 +30,7 @@ static void Init() {
 }

 static void Start() {
-	int *p1 = getCaliVariable();
+	vmvar_t *p1 = getCaliVariable();
 	int p2 = getCaliValue();

 	char *fname_utf8 = sjis2utf(svar_get(p2));
@@ -52,7 +52,7 @@ static void SetValid() {
 }

 static void GetValid() {
-	int *p1 = getCaliVariable();
+	vmvar_t *p1 = getCaliVariable();

 	*p1 = valid;

@@ -68,7 +68,7 @@ static void SetAction() {
 }

 static void GetAction() {
-	int *p1 = getCaliVariable();
+	vmvar_t *p1 = getCaliVariable();

 	*p1 = action;

@@ -22,7 +22,7 @@ night_t nightprv;


 static void Init(void) { /* 0 */
-	int *var = getCaliVariable();
+	vmvar_t *var = getCaliVariable();
 	int p1 = getCaliValue();  /* ISys3xCG */
 	int p2 = getCaliValue();  /* ISys3xDIB */
 	int p3 = getCaliValue();  /* ISys3xMsgString */
@@ -46,18 +46,17 @@ static void NIGHTDLL_reset(void) {
 		if (night.sp[i])
 			nt_sp_free(night.sp[i]);
 	}
-	nt_scg_freeall();
+	scg_freeall();
 	memset(&night, 0, sizeof(night));
 }

 static void InitGame() { /* 1 */
-	ags_setAntialiasedStringMode(TRUE);
+	ags_setAntialiasedStringMode(true);
 	sys_setHankakuMode(2);
 	
 	nact->msgout = ntmsg_add;
 	nact->ags.eventcb = ntev_callback;
-	nact->callback = ntev_main;
-	
+
 	nt_gr_init();
 	ntmsg_init();
 	nt_sstr_init();
@@ -214,7 +213,7 @@ static void SetSelMode(void) { /* 18 */

 // キー入力待ち後、改ページ
 static void AnalyzeMessage(void) { /* 19 */
-	int *var = getCaliVariable(); // 入力されたキー
+	vmvar_t *var = getCaliVariable(); // 入力されたキー

 	*var = ntmsg_ana();
 	
@@ -298,7 +297,7 @@ static void ScreenCG(void) { /* 27 */
 }

 static void RunGameMain(void) { /* 28 */
-	int *p1 = getCaliVariable(); // result
+	vmvar_t *p1 = getCaliVariable(); // result
 	int p2 = getCaliValue();     // month
 	int p3 = getCaliValue();     // day
 	int p4 = getCaliValue();     // day of week
@@ -314,7 +313,7 @@ static void RunGameMain(void) { /* 28 */
 }

 static void CheckNewGame(void) { /* 29 */
-	int *p1 = getCaliVariable();
+	vmvar_t *p1 = getCaliVariable();
 	
 	*p1 = 0;
 	
@@ -348,9 +347,9 @@ static void SetDate(void) { /* 33 */
 }

 static void GetDate(void) { /* 34 */
-	int *p1 = getCaliVariable(); // month
-	int *p2 = getCaliVariable(); // day
-	int *p3 = getCaliVariable(); // day of weeek
+	vmvar_t *p1 = getCaliVariable(); // month
+	vmvar_t *p2 = getCaliVariable(); // day
+	vmvar_t *p3 = getCaliVariable(); // day of weeek

 	*p1 = night.Month;
 	*p2 = night.Day;
@@ -364,7 +363,7 @@ static void SelectGameLevel(void) { /* 35 */
 }

 static void RunEventDungeon(void) { /* 36 */
-	int *p1 = getCaliVariable();
+	vmvar_t *p1 = getCaliVariable();
 	int p2 = getCaliValue();

 	*p1 = 1;
@@ -400,7 +399,7 @@ static void CDStop(void) { /* 39 */
 static void CDMute(void) { /* 40 */
 	int p1 = getCaliValue(); // 0: mute off, 1: mute on
 	
-	nt_cd_mute(p1 == 0 ? FALSE : TRUE);
+	nt_cd_mute(p1 != 0);
 	
 	TRACE_UNIMPLEMENTED("NIGHTDLL.CDMute %d:", p1);
 }
@@ -440,7 +439,7 @@ static void SoundEffectSetSyncFlag(void) { /* 44 */
 	int p1 = getCaliValue(); // ch
 	int p2 = getCaliValue(); // 0: 終るまで待たない, 1: 待つ
 	
-	nt_snd_waitend(p1, p2 == 0 ? FALSE : TRUE);
+	nt_snd_waitend(p1, p2 != 0);
 	
 	TRACE_UNIMPLEMENTED("NIGHTDLL.SoundEffectSetSyncFlag %d,%d:", p1, p2);
 }
@@ -479,7 +478,7 @@ static void RunSoundMode(void) { /* 48 */
 }

 static void RunMapEditor(void) { /* 49 */
-	int *p1 = getCaliVariable();
+	vmvar_t *p1 = getCaliVariable();
 	
 	TRACE_UNIMPLEMENTED("NIGHTDLL.RunMapEditor %p:", p1);
 }
@@ -496,21 +495,21 @@ static void VisualListAdd(void) { /* 51 */
 }

 static void GetLocalCountCG(void) { /* 52 */
-	int *p1 = getCaliVariable();
+	vmvar_t *p1 = getCaliVariable();
 	int p2 = getCaliValue();
 	
 	TRACE_UNIMPLEMENTED("NIGHTDLL.GetLocalCountCG %p,%d:", p1, p2);
 }

 static void PlayMemory(void) { /* 53 */
-	int *p1 = getCaliVariable(); // 回想ページ
-	int *p2 = getCaliVariable(); // 回想RESULT
+	vmvar_t *p1 = getCaliVariable(); // 回想ページ
+	vmvar_t *p2 = getCaliVariable(); // 回想RESULT
 	
 	TRACE_UNIMPLEMENTED("NIGHTDLL.PlayMemory %p,%p:", p1, p2);
 }

 static void GetEventFlagTotal(void) { /* 54 */
-	int *p1 = getCaliVariable();
+	vmvar_t *p1 = getCaliVariable();
 	int p2 = getCaliValue();
 	
 	TRACE_UNIMPLEMENTED("NIGHTDLL.GetEventFlagTotal %p,%d:", p1, p2);
@@ -529,25 +528,25 @@ static void GetPlayerName(void) { /* 56 */
 }

 static void SaveGame(void) { /* 57 */
-	int *p1 = getCaliVariable();
+	vmvar_t *p1 = getCaliVariable();
 	
 	TRACE_UNIMPLEMENTED("NIGHTDLL.SaveGame %p:", p1);
 }

 static void LoadGame(void) { /* 58 */
-	int *p1 = getCaliVariable();
+	vmvar_t *p1 = getCaliVariable();
 	
 	TRACE_UNIMPLEMENTED("NIGHTDLL.LoadGame %p:", p1);
 }

 static void ExistSaveData(void) { /* 59 */
-	int *p1 = getCaliVariable();
+	vmvar_t *p1 = getCaliVariable();
 	
 	TRACE_UNIMPLEMENTED("NIGHTDLL.ExistSaveData %p:", p1);
 }

 static void ExistStartData(void) { /* 60 */
-	int *p1 = getCaliVariable();
+	vmvar_t *p1 = getCaliVariable();

 	TRACE_UNIMPLEMENTED("NIGHTDLL.ExistStartData %p:", p1);
 }
@@ -581,13 +580,13 @@ static void DebugScenario(void) { /* 66 */
 }

 static void GetDLLTime(void) { /* 67 */
-	int *p1 = getCaliVariable();
-	int *p2 = getCaliVariable();
-	int *p3 = getCaliVariable();
-	int *p4 = getCaliVariable();
-	int *p5 = getCaliVariable();
-	int *p6 = getCaliVariable();
-	int *p7 = getCaliVariable();
+	vmvar_t *p1 = getCaliVariable();
+	vmvar_t *p2 = getCaliVariable();
+	vmvar_t *p3 = getCaliVariable();
+	vmvar_t *p4 = getCaliVariable();
+	vmvar_t *p5 = getCaliVariable();
+	vmvar_t *p6 = getCaliVariable();
+	vmvar_t *p7 = getCaliVariable();

 	TRACE_UNIMPLEMENTED("NIGHTDLL.GetDLLTime %p,%p,%p,%p,%p,%p,%p:", p1, p2, p3, p4, p5, p6, p7);
 }
@@ -3,8 +3,6 @@

 #include "config.h"
 #include "portab.h"
-#include "graphics.h"
-#include "surface.h"
 #include "ags.h"
 #include "sprite.h"

@@ -39,13 +37,9 @@ struct _night {
 	int waitskiplv;
 	int waitkey;

-	
-	// graph
-	// cginfo_t *cg[CGMAX];
+	SDL_Rect updaterect;

-	MyRectangle updaterect;
-
-	int fonttype;
+	FontType fonttype;
 	int fontsize;

 	sprite_t *sp[SPRITEMAX];
@@ -55,7 +49,7 @@ struct _night {

 	// msg
 	char msgbuf[MSGBUFMAX];
-	boolean zhiding;
+	bool zhiding;
 	struct {
 		void (* cbmove)(agsevent_t *);
 		void (* cbrelease)(agsevent_t *);
@@ -53,11 +53,6 @@ static void cb_waitkey_selection(agsevent_t *e) {
 }

 void ntev_callback(agsevent_t *e) {
-	// menu open中は無視
-	if (nact->popupmenu_opened) {
-		return;
-	}
-	
 	if (e->type == AGSEVENT_KEY_PRESS && e->code == KEY_CTRL) {
 		night.waitskiplv = 2;
 		night.waitkey = e->code;
@@ -90,16 +85,5 @@ void ntev_callback(agsevent_t *e) {
 	default:
 		return;
 	}
-	
-}

-/*
-  system35のメインループからで呼ばれるコールバック
-*/
-void ntev_main() {
-        // デフォルトのコールバックのうち、ここで必要なものだけ処理。
-        if (nact->popupmenu_opened) {
-                menu_gtkmainiteration();
-                if (nact->is_quit) sys_exit(0);
-        }
 }
@@ -2,7 +2,6 @@
 #define __NT_EVENT_H__

 extern void ntev_callback(agsevent_t *e);
-extern void ntev_main();


 #endif /* __NT_EVENT_H__ */
@@ -1,11 +1,10 @@
 #include <stdio.h>
+#include <SDL.h>

 #include "portab.h"
 #include "system.h"
 #include "cg.h"
 #include "ags.h"
-#include "surface.h"
-#include "ngraph.h"
 #include "night.h"
 #include "sprite.h"
 #include "nt_scenario.h"
@@ -54,8 +53,8 @@ void nt_gr_set_wallpaper(int no) {
 	sp = nt_sp_new(SPNO_WALL, no, 0, 0, SPRITE_WP);
 	nt_sp_add_updatelist(sp);
 	if (no == 0) {
-		sp->cursize.width  = sf0->width;
-		sp->cursize.height = sf0->height;
+		sp->width  = main_surface->w;
+		sp->height = main_surface->h;
 		sp->update = nt_sp_draw_wall;
 	}
 	
@@ -178,28 +177,22 @@ void nt_gr_draw(int effectno) {
 		// 全消し
 		break;
 	case 1:
-		nt_sp_update_all(TRUE);
+		nt_sp_update_all(true);
 		break;
 	default:
 		if (night.waitskiplv > 1) {
-			nt_sp_update_all(TRUE);
+			nt_sp_update_all(true);
 			break;
 		}
-		//nt_sp_eupdate(effectno, effecttime, TRUE);
-		nt_sp_eupdate(effectno, 1000, TRUE);
+		//nt_sp_eupdate(effectno, effecttime, true);
+		nt_sp_eupdate(effectno, 1000, true);
 	}
 }

 void nt_gr_screencg(int no, int x, int y) {
-	surface_t *sf;
-	
-	sf = sf_loadcg_no(no -1);
-	
-	gre_BlendScreen(sf0, x, y, sf0, x, y, sf, 0, 0, sf->width, sf->height);
-	
-	ags_updateArea(x, y, sf->width, sf->height);
-	
-	sf_free(sf);
+	SDL_Surface *sf = cg_load_as_sdlsurface(no - 1);
+	SDL_SetSurfaceBlendMode(sf, SDL_BLENDMODE_ADD);
+	SDL_BlitSurface(sf, NULL, main_surface, &(SDL_Rect){x, y, sf->w, sf->h});
+	ags_updateArea(x, y, sf->w, sf->h);
+	SDL_FreeSurface(sf);
 }
-
-
@@ -3,15 +3,14 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
+#include <SDL.h>

 #include "portab.h"
 #include "system.h"
-#include "sdl_core.h"
 #include "utfsjis.h"
 #include "ags.h"
 #include "nact.h"
 #include "input.h"
-#include "ngraph.h"
 #include "drawtext.h"
 #include "night.h"
 #include "nt_msg.h"
@@ -25,23 +24,29 @@ extern int ntsel_dosel(void);
 #define SNAME_RYO "亮　　　　"
 #define SNAME_RYO_DEF "亮"

-// 通常メッセージ表示位置と大きさ
-#define MSGFRAME_0_X 6
-#define MSGFRAME_0_Y 347
-#define MSGFRAME_0_WIDTH 628
-#define MSGFRAME_0_HEIGHT 125
+// Normal message window
+static const SDL_Rect msgframe_0 = {
+	.x = 6,
+	.y = 347,
+	.w = 628,
+	.h = 125
+};

-// 画面全体メッセージ表示位置と大きさ
-#define MSGFRAME_1_X 0
-#define MSGFRAME_1_Y 0
-#define MSGFRAME_1_WIDTH 640
-#define MSGFRAME_1_HEIGHT 480
+// Full screen message window
+static const SDL_Rect msgframe_1 = {
+	.x = 0,
+	.y = 0,
+	.w = 640,
+	.h = 480
+};

-// 通常メッセージ(顔つき)表示位置と大きさ
-#define MSGFRAME_2_X (6+160)
-#define MSGFRAME_2_Y 347
-#define MSGFRAME_2_WIDTH (628-160)
-#define MSGFRAME_2_HEIGHT 125
+// Normal message (with face) window
+static const SDL_Rect msgframe_2 = {
+	.x = 6 + 160,
+	.y = 347,
+	.w = 628 - 160,
+	.h = 125
+};

 // キー入力アニメーション位置
 #define HAKANIM_LOC_X 620
@@ -69,7 +74,7 @@ void ntmsg_init() {
 	sprite_t *sp;

 	// メッセージスプライト
-	sp = night.sp[SPNO_MSGFRAME_FG] = nt_sp_msg_new(SPNO_MSGFRAME_FG, 0, 0, sf0->width, sf0->height);
+	sp = night.sp[SPNO_MSGFRAME_FG] = nt_sp_msg_new(SPNO_MSGFRAME_FG, 0, 0, main_surface->w, main_surface->h);
 	nt_sp_add_updatelist(sp);
 	
 	// メッセージ背景用CG
@@ -77,8 +82,8 @@ void ntmsg_init() {
 	nt_sp_add_updatelist(sp);
 	
 	// 文字背景CG作成
-	nt_scg_create(CGNO_MSGFR_BG,
-		   sf0->width, sf0->height,
+	scg_create(CGNO_MSGFR_BG,
+		   main_surface->w, main_surface->h,
 		   0, 0, 0, 255);
 	// night.cg[CGNO_MSGFR_BG]->refcnt++;
 	
@@ -87,15 +92,15 @@ void ntmsg_init() {
 	nt_sp_add_updatelist(sp);
 	
 	// キー入力アニメーションCG作成
-	nt_scg_cut(CGNO_MSGHAK_1, CGNO_MSGHAK_LCG, 0, 0, 9, 9);
+	scg_cut(CGNO_MSGHAK_1, CGNO_MSGHAK_LCG, 0, 0, 9, 9);
 	//night.cg[CGNO_MSGHAK_1]->refcnt++;
-	nt_scg_cut(CGNO_MSGHAK_2, CGNO_MSGHAK_LCG, 0, 9, 9, 9);
+	scg_cut(CGNO_MSGHAK_2, CGNO_MSGHAK_LCG, 0, 9, 9, 9);
 	//night.cg[CGNO_MSGHAK_2]->refcnt++;
 	sp = night.sp[SPNO_MSG_KEYANIM] = nt_sp_new(SPNO_MSG_KEYANIM, CGNO_MSGHAK_1, CGNO_MSGHAK_2, 0, SPRITE_ANIME);
 	sp->u.anime.interval = HAKANIM_INTERVAL;
 	nt_sp_add_updatelist(sp);
 	nt_sp_set_loc(sp, HAKANIM_LOC_X, HAKANIM_LOC_Y);
-	nt_sp_set_show(sp, FALSE);
+	nt_sp_set_show(sp, false);
 	sp->update = nt_sp_draw_scg;

 	
@@ -121,45 +126,34 @@ void ntmsg_init() {
 //   type=1 枠あり
 //   type=2 中央
 void ntmsg_set_frame(int type) {
-	surface_t *sf;
-	
 	night.msgframe = type;

-	sf = night.sp[SPNO_MSGBG]->curcg->sf;
-	memset(sf->pixel, 0, sf->bytes_per_line * sf->height);
-	memset(sf->alpha, 0, sf->width * sf->height);
+	SDL_Surface *sf = night.sp[SPNO_MSGBG]->curcg->sf;
+	SDL_FillRect(sf, NULL, 0);
 	
 	switch(type) {
 	case 0:
-		nt_sp_set_show(night.sp[SPNO_MSGBG], FALSE);
-		nt_sp_set_show(night.sp[SPNO_MSGFRAME_BG], FALSE);
-		nt_sp_set_show(night.sp[SPNO_MSGFRAME_FG], FALSE);
+		nt_sp_set_show(night.sp[SPNO_MSGBG], false);
+		nt_sp_set_show(night.sp[SPNO_MSGFRAME_BG], false);
+		nt_sp_set_show(night.sp[SPNO_MSGFRAME_FG], false);
 		break;
 	case 1:
-		nt_sp_set_show(night.sp[SPNO_MSGBG], TRUE);
-		nt_sp_set_show(night.sp[SPNO_MSGFRAME_BG], TRUE);
-		nt_sp_set_show(night.sp[SPNO_MSGFRAME_FG], TRUE);
+		nt_sp_set_show(night.sp[SPNO_MSGBG], true);
+		nt_sp_set_show(night.sp[SPNO_MSGFRAME_BG], true);
+		nt_sp_set_show(night.sp[SPNO_MSGFRAME_FG], true);
 		
-		gr_fill(sf, MSGFRAME_0_X, MSGFRAME_0_Y,
-			MSGFRAME_0_WIDTH, MSGFRAME_0_HEIGHT,
-			16, 32, 64);
-		gr_fill_alpha_map(sf, MSGFRAME_0_X, MSGFRAME_0_Y,
-				  MSGFRAME_0_WIDTH, MSGFRAME_0_HEIGHT, 192);
+		SDL_FillRect(sf, &msgframe_0, SDL_MapRGBA(sf->format, 16, 32, 64, 192));
 		ntmsg_clear(SPNO_MSGFRAME_FG);
-		nt_sp_update_all(TRUE);
+		nt_sp_update_all(true);
 		break;
 	case 2:
-		nt_sp_set_show(night.sp[SPNO_MSGBG], TRUE);
-		nt_sp_set_show(night.sp[SPNO_MSGFRAME_BG], FALSE);
-		nt_sp_set_show(night.sp[SPNO_MSGFRAME_FG], TRUE);
+		nt_sp_set_show(night.sp[SPNO_MSGBG], true);
+		nt_sp_set_show(night.sp[SPNO_MSGFRAME_BG], false);
+		nt_sp_set_show(night.sp[SPNO_MSGFRAME_FG], true);
 		
-		gr_fill(sf, MSGFRAME_1_X, MSGFRAME_1_Y,
-			MSGFRAME_1_WIDTH, MSGFRAME_1_HEIGHT,
-			32, 32, 32);
-		gr_fill_alpha_map(sf, MSGFRAME_1_X, MSGFRAME_1_Y,
-				  MSGFRAME_1_WIDTH, MSGFRAME_1_HEIGHT, 128);
+		SDL_FillRect(sf, &msgframe_1, SDL_MapRGBA(sf->format, 32, 32, 32, 128));
 		ntmsg_clear(SPNO_MSGFRAME_FG);
-		nt_sp_update_all(TRUE);
+		nt_sp_update_all(true);
 	
 		break;
 	}
@@ -221,8 +215,8 @@ int ntmsg_ana(void) {
 static void ntmsg_out(int wNum, int wSize, int wColorR, int wColorG, int wColorB, int wFont, int wSpeed, int wLineSpace) {
 	char *msg;
 	sprite_t *sp;
-	boolean needupdate = FALSE;
-	MyRectangle uparea = {0,0,0,0};
+	bool needupdate = false;
+	SDL_Rect uparea = {0,0,0,0};
 	int savex;
 	
 	if (night.msgbuf[0] == '\0') return;
@@ -241,7 +235,7 @@ static void ntmsg_out(int wNum, int wSize, int wColorR, int wColorG, int wColorB
 		char mbuf[20];
 		int cw, delta, wcnt;
 		
-		wcnt = sdl_getTicks();
+		wcnt = sys_get_ticks();
 		
 		mbuf[0] = '\0';
 		msg = get_char(msg, mbuf, sizeof(mbuf) -1); 
@@ -260,7 +254,7 @@ static void ntmsg_out(int wNum, int wSize, int wColorR, int wColorG, int wColorB
 				     mbuf,
 				     wColorR, wColorG, wColorB);
 		
-		needupdate = TRUE;
+		needupdate = true;
 		
 		if (wSpeed > 0) {
 			nt_sp_updateme_part(sp,
@@ -269,10 +263,10 @@ static void ntmsg_out(int wNum, int wSize, int wColorR, int wColorG, int wColorB
 					 cw,
 					 wSize);
 			nt_sp_update_clipped();
-			needupdate = FALSE;
+			needupdate = false;
 			
 			// keywait
-			delta = sdl_getTicks() - wcnt;
+			delta = sys_get_ticks() - wcnt;
 			if (delta < wSpeed) {
 				if (sys_keywait(wSpeed - delta, KEYWAIT_NONCANCELABLE)) {
 					
@@ -289,8 +283,8 @@ static void ntmsg_out(int wNum, int wSize, int wColorR, int wColorG, int wColorB
 	
 	// Waitなしの出力は最後にupdate
 	if (needupdate) {
-		uparea.w = sp->cursize.width;
-		uparea.h = min(sp->cursize.height, uparea.y - sp->u.msg.dspcur.y + wLineSpace + wLineSpace);
+		uparea.w = sp->width;
+		uparea.h = min(sp->height, uparea.y - sp->u.msg.dspcur.y + wLineSpace + wLineSpace);
 		nt_sp_updateme_part(sp, uparea.x, uparea.y, uparea.w, uparea.h);
 	}
 	
@@ -316,14 +310,14 @@ static int ntmsg_keywait() {
 	night.waitkey = -1;
 	
 	while (night.waitkey == -1 && !nact->is_quit) {
-		int st = sdl_getTicks();
+		int st = sys_get_ticks();
 		int interval = 25;
 		
 		if (!night.zhiding) {
 			interval = night.sp[SPNO_MSG_KEYANIM]->u.anime.interval;
 			hakanim(i++);
 		} 
-		sys_keywait(interval - (sdl_getTicks() - st), KEYWAIT_NONCANCELABLE);
+		sys_keywait(interval - (sys_get_ticks() - st), KEYWAIT_NONCANCELABLE);
 	}
 	
 	night.waittype = KEYWAIT_NONE;
@@ -337,8 +331,8 @@ static void set_align(char *msg, sprite_t *sp, int wSize) {
 	
 	switch(night.msgplace) {
 	case 0:
-		sp->u.msg.dspcur.x = MSGFRAME_0_X;
-		sp->u.msg.dspcur.y = MSGFRAME_0_Y + 8;
+		sp->u.msg.dspcur.x = msgframe_0.x;
+		sp->u.msg.dspcur.y = msgframe_0.y + 8;
 		break;
 		
 	case 1:
@@ -360,12 +354,12 @@ static void set_align(char *msg, sprite_t *sp, int wSize) {
 		
 		maxchar = max(maxchar, c);
 		line++;
-		sp->u.msg.dspcur.x = (sp->cursize.width - (maxchar * wSize/2)) /2;
-		sp->u.msg.dspcur.y = (sp->cursize.height - (line * (wSize+2))) /2;
+		sp->u.msg.dspcur.x = (sp->width - (maxchar * wSize/2)) /2;
+		sp->u.msg.dspcur.y = (sp->height - (line * (wSize+2))) /2;
 		break;
 	case 2:
-		sp->u.msg.dspcur.x = MSGFRAME_2_X;
-		sp->u.msg.dspcur.y = MSGFRAME_2_Y + 8;
+		sp->u.msg.dspcur.x = msgframe_2.x;
+		sp->u.msg.dspcur.y = msgframe_2.y + 8;
 		break;
 	}
 	
@@ -424,7 +418,7 @@ static void setup_hakanim() {
 // メッセージ表示時のキー入力を促すアニメーション
 static void hakanim(int i) {
 	sprite_t *sp;
-	boolean show;
+	bool show;
 	
 	sp = night.sp[SPNO_MSG_KEYANIM];
 	if (sp == NULL) return;
@@ -434,60 +428,43 @@ static void hakanim(int i) {
 	} else {
 		sp->curcg = sp->cg2;
 	}
-	sp->show = TRUE;
+	sp->show = true;
 	nt_sp_updateme(sp);
 	nt_sp_update_clipped();
 	
 	sp->show = show;
 }

-int ntmsg_update(sprite_t *sp, MyRectangle *r) {
-	int sx, sy, w, h, dx, dy;
-	surface_t update;
-	
-	// canvas が clean のときはなにもしない
-	//  -> 説明スプライトのように、SetShowされたときに対応できないからだめ 
-	//if (sact.msgbufempty) return OK;
-	
-	update.width  = r->w;
-	update.height = r->h;
-	
-	dx = sp->cur.x - r->x;
-	dy = sp->cur.y - r->y;
-	
-	w = sp->cursize.width;
-	h = sp->cursize.height;
-	
-	sx = 0; sy = 0;
-	
-	if (!gr_clip(sp->u.msg.canvas, &sx, &sy, &w, &h, &update, &dx, &dy)) {
-		return NG;
+void ntmsg_update(sprite_t *sp, SDL_Rect *r) {
+	SDL_Rect sp_rect = {0, 0, sp->width, sp->height};
+	int sx = 0;
+	int sy = 0;
+	int dx = sp->cur.x;
+	int dy = sp->cur.y;
+	int w = sp->width;
+	int h = sp->height;
+	if (!ags_clipCopyRect(&sp_rect, r, &sx, &sy, &dx, &dy, &w, &h)) {
+		return;
 	}
-	
-	dx += r->x;
-	dy += r->y;
-	
-	gre_BlendUseAMap(sf0, dx, dy, sf0, dx, dy, sp->u.msg.canvas, sx, sy, w, h, sp->u.msg.canvas, sx, sy, sp->blendrate);
-	
+
+	SDL_SetSurfaceBlendMode(sp->u.msg.canvas, SDL_BLENDMODE_BLEND);
+	SDL_SetSurfaceAlphaMod(sp->u.msg.canvas, sp->blendrate);
+	SDL_BlitSurface(sp->u.msg.canvas, &(SDL_Rect){sx, sy, w, h}, main_surface, &(SDL_Rect){dx, dy, w, h});
+
 	SACT_DEBUG("do update no=%d, sx=%d, sy=%d, w=%d, h=%d, dx=%d, dy=%d",
 		sp->no, sx, sy, w, h, dx, dy);
-	
-	return OK;
 }

 static void ntmsg_clear(int wNum) {
 	sprite_t *sp = night.sp[wNum];
-	surface_t *sf;
-	
+
 	sp->u.msg.dspcur.x = 0;
 	sp->u.msg.dspcur.y = 0;
 	
 	night.msgbuf[0]  = '\0';
-	
-	// キャンバスのクリア
-	sf = sp->u.msg.canvas;
-	memset(sf->pixel, 0, sf->bytes_per_line * sf->height);
-	memset(sf->alpha, 0, sf->width * sf->height);
-	
+
+	// Clear the canvas
+	SDL_FillRect(sp->u.msg.canvas, NULL, 0);
+
 	nt_sp_updateme(sp);
 }
@@ -1,12 +1,12 @@
 #ifndef __NT_MSG_H__
 #define __NT_MSG_H__

-extern void ntmsg_init();
-extern void ntmsg_set_frame(int type);
-extern void ntmsg_set_place(int type);
-extern void ntmsg_newline();
-extern void ntmsg_add(const char *msg);
-extern int  ntmsg_ana(void);
-extern int  ntmsg_update(sprite_t *sp, MyRectangle *r);
+void ntmsg_init();
+void ntmsg_set_frame(int type);
+void ntmsg_set_place(int type);
+void ntmsg_newline();
+void ntmsg_add(const char *msg);
+int  ntmsg_ana(void);
+void ntmsg_update(sprite_t *sp, SDL_Rect *r);

 #endif /* __NT_MSG_H__ */
@@ -8,7 +8,6 @@
 #include "portab.h"
 #include "system.h"
 #include "input.h"
-#include "sdl_core.h"
 #include "scheduler.h"
 #include "xsystem35.h"
 #include "nact.h"
@@ -56,19 +55,17 @@ static void ntmain(struct _scoadr inadr) {
 		while (!nact->is_quit && !is_yield_requested()) {
 			scheduler_on_command();
 			//SACT_DEBUG("%d:%x", sl_getPage(), sl_getIndex());
-			if (!nact->popupmenu_opened) {
-				exec_command();
-				if (sl_getPage()  == inadr.page &&
-					sl_getIndex() == inadr.index) {
-					// ~E%05dからの戻り
-					if (nact->fnc_return_value == 0) {
-						return;
-					} else {
-						scono = nact->fnc_return_value;
-					}
-					curadr = scene2adr(scono);
-					sl_callFar2(curadr.page -1, curadr.index);
+			exec_command();
+			if (sl_getPage()  == inadr.page &&
+				sl_getIndex() == inadr.index) {
+				// ~E%05dからの戻り
+				if (nact->fnc_return_value == 0) {
+					return;
+				} else {
+					scono = nact->fnc_return_value;
 				}
+				curadr = scene2adr(scono);
+				sl_callFar2(curadr.page -1, curadr.index);
 			}
 			nact->callback();
 		}
@@ -107,9 +104,9 @@ void nt_sco_callevent(int ev) {
 }


-boolean nt_sco_is_natsu() {
-	if (night.Month < 6 || night.Month > 9) return FALSE;
-	if (night.Month == 6 && night.Day < 11) return FALSE;
-	return TRUE;
+bool nt_sco_is_natsu() {
+	if (night.Month < 6 || night.Month > 9) return false;
+	if (night.Month == 6 && night.Day < 11) return false;
+	return true;
 }

@@ -3,7 +3,7 @@

 extern void    nt_sco_init();
 extern int     nt_sco_main(int mode);
-extern boolean nt_sco_is_natsu();
+extern bool nt_sco_is_natsu();
 extern void nt_sco_callevent(int ev);

 #endif /* __NT_SCENARIO_H__ */
@@ -10,7 +10,7 @@ struct _ntsnd {
 	int no;
 	int vol;
 	int loop;
-	boolean waitend;
+	bool waitend;
 };
 static struct _ntsnd ntsnd[10];

@@ -27,14 +27,14 @@ void nt_cd_play(int no) {
 }

 void nt_cd_stop(int msec) {
-	mus_mixer_fadeout_start(MIX_CD, msec, 0, TRUE);
+	mus_mixer_fadeout_start(MIX_CD, msec, 0, true);
 }

-void nt_cd_mute(boolean mute) {
+void nt_cd_mute(bool mute) {
 	if (mute) {
-		mus_mixer_fadeout_start(MIX_CD, 0, 0, FALSE);
+		mus_mixer_fadeout_start(MIX_CD, 0, 0, false);
 	} else {
-		mus_mixer_fadeout_start(MIX_CD, 0, 100, FALSE);
+		mus_mixer_fadeout_start(MIX_CD, 0, 100, false);
 	}
 }

@@ -56,7 +56,7 @@ void nt_snd_setvol(int ch, int vol) {
 	ntsnd[ch -1].vol = vol;
 }

-void nt_snd_waitend(int ch, boolean waitend) {
+void nt_snd_waitend(int ch, bool waitend) {
 	if (ch < 1) return;

 	ntsnd[ch -1].waitend = waitend;
@@ -74,13 +74,13 @@ void nt_snd_play(int ch) {
 void nt_snd_stop(int ch, int msec) {
 	if (ch < 1) return;
 	
-	mus_wav_fadeout_start(ch, msec, 0, TRUE);
+	mus_wav_fadeout_start(ch, msec, 0, true);
 }

 void nt_snd_stopall(int msec) {
 	int i;
 	
 	for (i = 1; i <= 10; i++) {
-		mus_wav_fadeout_start(i, msec, 0, TRUE);
+		mus_wav_fadeout_start(i, msec, 0, true);
 	}
 }
@@ -6,11 +6,11 @@
 extern void nt_voice_set(int no);
 extern void nt_cd_play(int no);
 extern void nt_cd_stop(int msec);
-extern void nt_cd_mute(boolean mute);
+extern void nt_cd_mute(bool mute);
 extern void nt_snd_setwave(int ch, int no);
 extern void nt_snd_setloop(int ch, int num);
 extern void nt_snd_setvol(int ch, int vol);
-extern void nt_snd_waitend(int ch, boolean waitend);
+extern void nt_snd_waitend(int ch, bool waitend);
 extern void nt_snd_play(int ch);
 extern void nt_snd_stop(int ch, int msec);
 extern void nt_snd_stopall(int msec);
@@ -1,345 +0,0 @@
-/*
- * sactcg.c: CG作成
- *
- * Copyright (C) 1997-1998 Masaki Chikama (Wren) <chikama@kasumi.ipl.mech.nagoya-u.ac.jp>
- *               1998-                           <masaki-c@is.aist-nara.ac.jp>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
-*/
-/* $Id: sactcg.c,v 1.2 2003/11/16 15:29:52 chikama Exp $ */
-
-#include "config.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "portab.h"
-#include "nact.h"
-#include "system.h"
-#include "ags.h"
-#include "surface.h"
-#include "ngraph.h"
-#include "sactcg.h"
-
-#define CGMAX 65536
-static cginfo_t *cgs[CGMAX];
-
-#include "sactcg_stretch.c"
-#include "sactcg_blend.c"
-
-
-#define spcg_assert_no(no) \
-  if ((no) > (CGMAX -1)) { \
-    WARNING("no is too large (should be %d < %d)", (no), CGMAX); \
-    return NG; \
-  } \
-
-static cginfo_t *nt_scg_new(enum cgtype type, int no, surface_t *sf) {
-	cginfo_t *info = calloc(1, sizeof(cginfo_t));
-	info->type = type;
-	info->no = no;
-	info->sf = sf;
-	info->refcnt = 1;
-
-	nt_scg_free(no);
-	cgs[no] = info;
-
-	return info;
-}
-
-/*
-  cgの読み込み
-
-    指定の番号のCGをリンクファイルから読み込んだり、
-    CG_xxxで作成したCGを参照する
-    
-  @param no: 読み込むCG番号
-*/
-static cginfo_t *nt_scg_get(int no) {
-	if (no >= (CGMAX -1)) {
-		WARNING("no is too large (should be %d < %d)", (no), CGMAX);
-		return NULL;
-	}
-	
-	if (cgs[no] != NULL)
-		return cgs[no];
-
-	surface_t *sf = sf_loadcg_no(no - 1);
-	if (!sf) {
-		WARNING("load fail (%d)", no -1);
-		return NULL;
-	}
-	return nt_scg_new(CG_LINKED, no, sf);
-}
-
-cginfo_t *nt_scg_addref(int no) {
-	cginfo_t *info = nt_scg_get(no);
-	if (info)
-		info->refcnt++;
-	return info;
-}
-
-void nt_scg_deref(cginfo_t *cg) {
-	if (--cg->refcnt > 0)
-		return;
-
-	if (cg->sf)
-		sf_free(cg->sf);
-	free(cg);
-}
-
-//  指定の大きさ、色の矩形の CG を作成
-int nt_scg_create(int wNumCG, int wWidth, int wHeight, int wR, int wG, int wB, int wBlendRate) {
-	spcg_assert_no(wNumCG);
-
-	surface_t *sf = sf_create_surface(wWidth, wHeight, sf0->depth);
-	gr_fill(sf, 0, 0, wWidth, wHeight, wR, wG, wB);
-	gr_fill_alpha_map(sf, 0, 0, wWidth, wHeight, wBlendRate);
-	nt_scg_new(CG_SET, wNumCG, sf);
-	return OK;
-}
-
-// 指定のCGを反転させたCGを作成
-int nt_scg_create_reverse(int wNumCG, int wNumSrcCG, int wReverseX, int wReverseY) {
-	spcg_assert_no(wNumCG);
-	spcg_assert_no(wNumSrcCG);
-	
-	cginfo_t *src = nt_scg_get(wNumSrcCG);
-	if (!src)
-		return NG;
-
-	surface_t *sf = stretch(src->sf, src->sf->width, src->sf->height, (wReverseX << 1) | wReverseY);
-	nt_scg_new(CG_REVERSE, wNumCG, sf);
-	return OK;
-}
-
-// 指定のCGを拡大/縮小したCGを作成
-int nt_scg_create_stretch(int wNumCG, int wWidth, int wHeight, int wNumSrcCG) {
-	spcg_assert_no(wNumCG);
-	spcg_assert_no(wNumSrcCG);
-
-	cginfo_t *src = nt_scg_get(wNumSrcCG);
-	if (!src)
-		return NG;
-	
-	surface_t *sf = stretch(src->sf, wWidth, wHeight, 0);
-	nt_scg_new(CG_STRETCH, wNumCG, sf);
-	return OK;
-}
-
-// ベースCGの上にブレンドCGを重ねた CG を作成
-int nt_scg_create_blend(int wNumDstCG, int wNumBaseCG, int wX, int wY, int wNumBlendCG, int wAlphaMapMode) {
-	spcg_assert_no(wNumDstCG);
-	spcg_assert_no(wNumBaseCG);
-	spcg_assert_no(wNumBlendCG);
-
-	cginfo_t *basecg  = nt_scg_get(wNumBaseCG);
-	cginfo_t *blendcg = nt_scg_get(wNumBlendCG);
-	if (!basecg || !blendcg) return NG;
-
-	surface_t *sf = blend(basecg->sf, wX, wY, blendcg->sf, wAlphaMapMode);
-	nt_scg_new(CG_SET, wNumDstCG, sf);
-	return OK;
-}
-
-// 指定の文字列のCGを作成
-int nt_scg_create_text(int wNumCG, int wSize, int wR, int wG, int wB, char *cText) {
-	spcg_assert_no(wNumCG);
-	
-	// 勝手に出ていいのかな？
-	if (strlen(cText) == 0) return OK;
-	
-	ags_setFont(FONT_GOTHIC, wSize);
-	agsurface_t *glyph = ags_drawStringToSurface(cText);
-
-	surface_t *sf = sf_create_surface(glyph->width, wSize, nact->ags.dib->depth);
-	gr_fill(sf, 0, 0, glyph->width, wSize, wR, wG, wB);
-	gr_draw_amap(sf, 0, 0, glyph->pixel, glyph->width, wSize, glyph->bytes_per_line);
-
-	nt_scg_new(CG_SET, wNumCG, sf);
-	return OK;
-}
-
-// 数字文字列のCGを作成
-int nt_scg_create_textnum(int wNumCG, int wSize, int wR, int wG, int wB, int wFigs, int wZeroPadding, int wValue) {
-	spcg_assert_no(wNumCG);
-
-	char s[256], ss[256];
-	if (wZeroPadding) {
-		char *sss = "%%0%dd";
-		sprintf(ss, sss, wFigs);
-	} else {
-		char *sss = "%%%dd";
-		sprintf(ss, sss, wFigs);
-	}
-	sprintf(s, ss, wValue);
-	
-	ags_setFont(FONT_GOTHIC, wSize);
-	agsurface_t *glyph = ags_drawStringToSurface(s);
-	
-	surface_t *sf = sf_create_surface(glyph->width, wSize, nact->ags.dib->depth);
-	gr_fill(sf, 0, 0, glyph->width, wSize, wR, wG, wB);
-	gr_draw_amap(sf, 0, 0, glyph->pixel, glyph->width, wSize, glyph->bytes_per_line);
-
-	nt_scg_new(CG_SET, wNumCG, sf);
-	return OK;
-}
-
-// CGを複製
-int nt_scg_copy(int wNumDstCG, int wNumSrcCG) {
-	spcg_assert_no(wNumDstCG);
-	spcg_assert_no(wNumSrcCG);
-
-	cginfo_t *src = nt_scg_get(wNumSrcCG);
-	if (!src)
-		return NG;
-
-	nt_scg_new(CG_SET, wNumDstCG, sf_dup(src->sf));
-	return OK;
-}
-
-// CGの一部を切りぬいたCGを作成
-int nt_scg_cut(int wNumDstCG, int wNumSrcCG, int wX, int wY, int wWidth, int wHeight) {
-	spcg_assert_no(wNumDstCG);
-	spcg_assert_no(wNumSrcCG);
-
-	cginfo_t *src = nt_scg_get(wNumSrcCG);
-	if (!src)
-		return NG;
-
-	surface_t *sf = src->sf->alpha
-		? sf_create_surface(wWidth, wHeight, src->sf->depth)
-		: sf_create_pixel(wWidth, wHeight, src->sf->depth);
-
-	if (src->sf->pixel)
-		gr_copy(sf, 0, 0, src->sf, wX, wY, wWidth, wHeight);
-	if (src->sf->alpha)
-		gr_copy_alpha_map(sf, 0, 0, src->sf, wX, wY, wWidth, wHeight);
-
-	nt_scg_new(CG_SET, wNumDstCG, sf);
-	return OK;
-}
-
-// 元のCGの一部を切りぬいたCGを作成
-int nt_scg_partcopy(int wNumDstCG, int wNumSrcCG, int wX, int wY, int wWidth, int wHeight) {
-	spcg_assert_no(wNumDstCG);
-	spcg_assert_no(wNumSrcCG);
-
-	cginfo_t *src = nt_scg_get(wNumSrcCG);
-	if (!src)
-		return NG;
-
-	surface_t *sf;
-	if (src->sf->alpha) {
-		sf = sf_create_surface(src->sf->width, src->sf->height, src->sf->depth);
-		gr_fill_alpha_map(sf, 0, 0, src->sf->width, src->sf->height, 255);
-	} else {
-		sf = sf_create_pixel(src->sf->width, src->sf->height, src->sf->depth);
-	}
-	
-	if (src->sf->pixel)
-		gr_copy(sf, wX, wY, src->sf, wX, wY, wWidth, wHeight);
-	if (src->sf->alpha)
-		gr_copy_alpha_map(sf, wX, wY, src->sf, wX, wY, wWidth, wHeight);
-
-	nt_scg_new(CG_SET, wNumDstCG, sf);
-	return OK;
-}
-
-// 全てのCGの開放
-int nt_scg_freeall() {
-	int i;
-	
-	for (i = 1; i < CGMAX; i++) {
-		nt_scg_free(i);
-	}
-	return OK;
-}
-
-/**
- * 指定の番号の CG をオブジェクトリストから消し、オブジェクトがどこからも参照
- * されていない(参照数が0の)場合のみ、オブジェクトを削除
- */
-int nt_scg_free(int no) {
-	spcg_assert_no(no);
-	
-	cginfo_t *cg = cgs[no];
-	if (!cg) return NG;
-	
-	nt_scg_deref(cg);
-	cgs[no] = NULL;
-	
-	return OK;
-}
-
-// CGの種類を取得
-int nt_scg_querytype(int wNumCG, int *ret) {
-	if (wNumCG >= (CGMAX -1)) goto errexit;
-	if (cgs[wNumCG] == NULL) goto errexit;
-
-	*ret = cgs[wNumCG]->type;
-	
-	return OK;
-
- errexit:
-	*ret = CG_NOTUSED;
-	return NG;
-}
-
-// CGの大きさを取得
-int nt_scg_querysize(int wNumCG, int *w, int *h) {
-	if (wNumCG >= (CGMAX -1)) goto errexit;
-	if (cgs[wNumCG] == NULL) goto errexit;
-	if (cgs[wNumCG]->sf == NULL) goto errexit;
-
-	*w = cgs[wNumCG]->sf->width;
-	*h = cgs[wNumCG]->sf->height;
-	
-	return OK;
-
- errexit:
-	*w = *h = 0;
-	return NG;
-}
-
-// CGのBPPを取得
-int nt_scg_querybpp(int wNumCG, int *ret) {
-	if (wNumCG >= (CGMAX -1)) goto errexit;
-	if (cgs[wNumCG] == NULL) goto errexit;
-	if (cgs[wNumCG]->sf == NULL) goto errexit;
-	
-	*ret = cgs[wNumCG]->sf->depth;
-
-	return OK;
-
- errexit:
-	*ret = 0;
-	return NG;
-}
-
-// CGの alphamap が存在するかを取得
-int nt_scg_existalphamap(int wNumCG, int *ret) {
-	if (wNumCG >= (CGMAX -1)) goto errexit;
-	if (cgs[wNumCG] == NULL) goto errexit;
-	if (cgs[wNumCG]->sf == NULL) goto errexit;
-	
-	*ret = cgs[wNumCG]->sf->alpha ? 1 : 0;
-	
- errexit:
-	*ret = 0;
-	return NG;
-}
@@ -1,49 +0,0 @@
-/*
- * sactcg.h: CG作成
- *
- * Copyright (C) 1997-1998 Masaki Chikama (Wren) <chikama@kasumi.ipl.mech.nagoya-u.ac.jp>
- *               1998-                           <masaki-c@is.aist-nara.ac.jp>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
-*/
-/* $Id: sactcg.h,v 1.2 2003/11/16 15:29:52 chikama Exp $ */
-
-#ifndef __SACTCG_H__
-#define __SACTCG_H__
-
-#include "portab.h"
-#include "night.h"
-
-extern cginfo_t *nt_scg_addref(int no);
-extern void nt_scg_deref(cginfo_t *cg);
-extern int nt_scg_create(int wNumCG, int wWidth, int wHeight, int wR, int wG, int wB, int wBlendRate);
-extern int nt_scg_create_reverse(int NumCG, int wNumSrcCG, int wReverseX, int wReverseY);
-extern int nt_scg_create_stretch(int wNumCG, int wWidth, int wHeight, int wNumSrcCG);
-extern int nt_scg_create_blend(int wNumDstCG, int wNumBaseCG, int wX, int wY, int wNumBlendCG, int wAlphaMapMode);
-extern int nt_scg_create_text(int wNumCG, int wSize, int wR, int wG, int wB, char *cText);
-extern int nt_scg_create_textnum(int wNumCG, int wSize, int wR, int wG, int wB, int wFigs, int wZeroPadding, int wValue);
-extern int nt_scg_copy(int wNumDstCG, int wNumSrcCG);
-extern int nt_scg_cut(int wNumDstCG, int wNumSrcCG, int wX, int wY, int wWidth, int wHeight);
-extern int nt_scg_partcopy(int wNumDstCG, int wNumSrcCG, int wX, int wY, int wWidth, int wHeight);
-extern int nt_scg_freeall();
-extern int nt_scg_free(int cg);
-extern int nt_scg_querytype(int wNumCG, int *ret);
-extern int nt_scg_querysize(int wNumCG, int *w, int *h);
-extern int nt_scg_querybpp(int wNumCG, int *ret);
-extern int nt_scg_existalphamap(int wNumCG, int *ret);
-extern int nt_scg_linkcgfree(int no);
-
-#endif
@@ -1,31 +0,0 @@
-// 
-static surface_t *blend(surface_t *base, int x, int y, surface_t *blend, int mode) {
-	surface_t *dst = sf_create_surface(base->width, base->height, base->depth);
-	
-	gr_copy(dst, 0, 0, base, 0, 0, base->width, base->height);
-	
-	if (base->alpha) {
-		// ベースに alpha map がある場合はそれをコピー
-		gr_copy_alpha_map(dst, 0, 0, base, 0, 0, base->width, base->height);
-	} else {
-		// 無い場合は全て 255 の map を作成
-		gr_fill_alpha_map(dst, 0, 0, base->width, base->height, 255);
-	}
-	
-	if (blend->alpha) {
-		// 重ね合わせ先の alpha map があるときはそれを使う
-		gre_BlendUseAMap(dst, x, y, base, x, y, blend, 0, 0, blend->width, blend->height, blend, 0, 0, 255);
-	} else {
-		// 無いときは dst の alpha map を使う
-		gre_BlendUseAMap(dst, x, y, base, x, y, blend, 0, 0, blend->width, blend->height, dst, x, y, 255);
-	}
-	
-	// alpha 作成モードが dst + blend の時は飽和加算
-	if (mode == 1) {
-		gr_saturadd_alpha_map(dst, x, y, blend, 0, 0, blend->width, blend->height);
-	}
-	
-	return dst;
-}
-
-
@@ -1,114 +0,0 @@
-// 拡大縮小
-static surface_t *stretch(surface_t *src, int dw, int dh, int mirror) {
-	surface_t *dst = calloc(1, sizeof(surface_t));
-	float    a1, a2, xd, yd;
-	int      sw, sh;
-	int      *row, *col;
-	int      x, y;
-	uint8_t  *sdata, *ddata;
-	
-	dst->width = dw;
-	dst->height = dh;
-	dst->depth = src->depth;
-	dst->bytes_per_line = dw * src->bytes_per_pixel;
-	dst->bytes_per_pixel = src->bytes_per_pixel;
-	
-	if (src->pixel) {
-		dst->pixel = malloc(dh * dst->bytes_per_line);
-	}
-	if (src->alpha) {
-		dst->alpha = malloc(dw * dh);
-	}
-	
-	
-	sdata = GETOFFSET_PIXEL(src, 0, 0);
-	ddata = GETOFFSET_PIXEL(dst, 0, 0);
-	sw = src->width;
-	sh = src->height;
-	
-	a1  = (float)sw / (float)dw;
-	a2  = (float)sh / (float)dh;
-	row = malloc(sizeof(int) * dw);
-	// 1おおきくして初期化しないと col[dw-1]とcol[dw]が同じになる
-	// 可能性がある。
-	col = calloc(dh +1, sizeof(int));
-	
-	if (mirror & 1) {
-		/* 上下反転 added by  tajiri@wizard */
-		for (yd = sh - a2, y = 0; y < dh; y++) {
-			col[y] = yd; yd -= a2;
-		}
-	} else {
-		for (yd = 0.0, y = 0; y < dh; y++) {
-			col[y] = yd; yd += a2;
-		}
-	}
-	if (mirror & 2) {
-		/* 左右反転 added by  tajiri@wizard */
-		for (xd = sw - a1, x = 0; x < dw; x++) {
-			row[x] = xd; xd -= a1;
-		}
-	} else {
-		for (xd = 0.0, x = 0; x < dw; x++) {
-			row[x] = xd; xd += a1;
-		}
-	}
-	
-#define SCALEDCOPYAREA(type) {                                          \
-	int x, y;                                                       \
-	type *sl, *dl;                                                  \
-	uint8_t *_sl, *_dl;                                             \
-	for (y = 0; y < dh; y++) {                                      \
-		sl = (type *)(sdata + *(y + col) * src->bytes_per_line);\
-		dl = (type *)(ddata +   y        * dst->bytes_per_line);\
-		for (x = 0; x < dw; x++) {                              \
-			*(dl + x) = *(sl + *(row + x));                 \
-		}                                                       \
-		_dl = (uint8_t *)dl;                                    \
-		while (y < dh - 1 && *(col + y) == *(col + y + 1)) {    \
-			_sl = _dl;                                      \
-			_dl += dst->bytes_per_line;                     \
-			memcpy(_dl, _sl, dw * sizeof(type));            \
-			y++;                                            \
-		}                                                       \
-	}}
-	
-	switch(dst->depth) {
-	case 8:	
-		SCALEDCOPYAREA(uint8_t); break;
-	case 16:
-		SCALEDCOPYAREA(uint16_t); break;
-	case 24:
-	case 32:
-		SCALEDCOPYAREA(uint32_t); break;
-	default:
-		break;
-	}
-	
-	if (src->alpha) {
-		int x, y;
-		uint8_t *sl, *dl;
-		uint8_t *_sl, *_dl;
-		sdata = GETOFFSET_ALPHA(src, 0, 0);
-		ddata = GETOFFSET_ALPHA(dst, 0, 0);
-		for (y = 0; y < dh; y++) {
-			sl = (uint8_t *)(sdata + *(y + col) * src->width);
-			dl = (uint8_t *)(ddata +   y        * dst->width);
-			for (x = 0; x < dw; x++) {
-				*(dl + x) = *(sl + *(row + x));
-			}
-			_dl = (uint8_t *)dl;
-			while (y < dh - 1 && *(col + y) == *(col + y + 1)) {
-				_sl = _dl;
-				_dl += dst->width;
-				memcpy(_dl, _sl, dw);
-				y++;
-			}
-		}
-	}
-	
-	free(row);
-	free(col);
-	
-	return dst;
-}
@@ -51,14 +51,13 @@ static char *replacedst;
 /**
 * 文字列変数スタックの初期化
 */
-int nt_sstr_init() {
+void nt_sstr_init(void) {
 	stack = malloc(sizeof(char *) * DEFSTACKSIZE);
 	idx = 0;
 	idxmax = DEFSTACKSIZE;
-	return OK;
 }

-int nt_sstr_reset(void) {
+void nt_sstr_reset(void) {
 	for (int i = 0; i < idx; i++)
 		free(stack[i]);
 	idx = 0;
@@ -73,35 +72,6 @@ int nt_sstr_reset(void) {
 	}
 	slist_free(strreplace);
 	strreplace = NULL;
-	return OK;
-}
-
-/**
- * 文字列変数スタックに文字列を積む
- * @param strno: シナリオ上での文字列変数番号
- */
-int nt_sstr_push(char *str) {
-	if (idx >= idxmax) {
-		stack = realloc(stack, sizeof(char *) * idx*2);
-		idxmax = idx*2;
-	}
-	
-	stack[idx++] = strdup(str);
-	
-	return OK;
-}
-
-/**
- * 文字列変数スタックから文字列を取り出す
- * @param strno: スタックから戻した文字列を格納する文字列変数番号
- */
-int nt_sstr_pop(char *str, int maxlen) {
-	if (idx == 0) return NG;
-	
-	strncpy(str, stack[--idx], maxlen);
-	free(stack[idx]);
-	
-	return OK;
 }

 /**
@@ -109,36 +79,15 @@ int nt_sstr_pop(char *str, int maxlen) {
 * @param sstrno: 変換元文字列変数番号
 * @param dstrno: 変換先文字列変数番号
 */
-int nt_sstr_regist_replace(char *sstr, char *dstr) {
+void nt_sstr_regist_replace(char *sstr, char *dstr) {
 	strexchange_t *ex;
 	
-	if (sstr == dstr) return NG;
+	if (sstr == dstr) return;
 	
 	ex = malloc(sizeof(strexchange_t));
 	ex->src = sstr;
 	ex->dst = dstr;
 	strreplace = slist_append(strreplace, ex);
-	return OK;
-}
-
-/**
- * 数値 -> 文字列化
- */
-int nt_sstr_num2str(int strno, int fig, int nzeropad, int num) {
-	char s[256], ss[256];
-	
-	if (nzeropad) {
-		char *sss = "%%0%dd";
-		sprintf(ss, sss, fig);
-	} else {
-		char *sss = "%%%dd";
-		sprintf(ss, sss, fig);
-	}
-	
-	sprintf(s, ss, num);
-	svar_set(strno, s);
-	
-	return OK;
 }

 // 文字列の置き換え処理
@@ -151,7 +100,7 @@ static void replacestr_cb(void* data, void* userdata) {
 	start = replacesrc;
 	out   = replacedst;
 	
-	while (TRUE) {
+	while (true) {
 		next = strstr(start, ex->src);
 		if (next == NULL) break;
 		strncat(out, start, (size_t)(next - start));
@@ -24,13 +24,10 @@
 #ifndef __SACTSTRING_H__
 #define __SACTSTRING_H__

-extern int nt_sstr_init();
-extern int nt_sstr_reset(void);
-extern int nt_sstr_push(char *str);
-extern int nt_sstr_pop(char *str, int maxlen);
-extern int nt_sstr_regist_replace(char *sstr, char *dstr);
-extern int nt_sstr_num2str(int strno, int fig, int nzeropad, int num);
-extern char *nt_sstr_replacestr(char *msg);
+void nt_sstr_init(void);
+void nt_sstr_reset(void);
+void nt_sstr_regist_replace(char *sstr, char *dstr);
+char *nt_sstr_replacestr(char *msg);


 #endif /* __SACTSTRING_H__ */
@@ -1,12 +1,11 @@
 #include "config.h"
 #include <stdio.h>
 #include <stdlib.h>
+#include <SDL.h>

 #include "portab.h"
 #include "sprite.h"
 #include "sactcg.h"
-#include "surface.h"
-#include "ngraph.h"
 #include "nt_msg.h"

 sprite_t *nt_sp_new(int no, int cg1, int cg2, int cg3, int type) {
@@ -17,23 +16,23 @@ sprite_t *nt_sp_new(int no, int cg1, int cg2, int cg3, int type) {
 	sp->no = no;
 	sp->type = type;
 	
-	sp->cg1 = cg1 ? nt_scg_addref(cg1) : NULL;
-	sp->cg2 = cg2 ? nt_scg_addref(cg2) : NULL;
-	sp->cg3 = cg3 ? nt_scg_addref(cg3) : NULL;
+	sp->cg1 = cg1 ? scg_addref(cg1) : NULL;
+	sp->cg2 = cg2 ? scg_addref(cg2) : NULL;
+	sp->cg3 = cg3 ? scg_addref(cg3) : NULL;
 	
 	sp->curcg = sp->cg1;
-	sp->show = TRUE;
+	sp->show = true;
 	sp->blendrate = 255;
 	sp->loc.x = 0;
 	sp->loc.y = 0;
 	sp->cur = sp->loc;
 	
 	if (sp->curcg == NULL) {
-		sp->cursize.width  = 0;
-		sp->cursize.height = 0;
+		sp->width  = 0;
+		sp->height = 0;
 	} else {
-		sp->cursize.width  = sp->curcg->sf->width;
-		sp->cursize.height = sp->curcg->sf->height;
+		sp->width  = sp->curcg->sf->w;
+		sp->height = sp->curcg->sf->h;
 	}
 	sp->update = DEFAULT_UPDATE;
 	
@@ -54,16 +53,16 @@ sprite_t *nt_sp_msg_new(int no, int x, int y, int width, int height) {
 	
 	sp->no = no;
 	sp->type = SPRITE_MSG;
-	sp->show = TRUE;
+	sp->show = true;
 	sp->blendrate = 255;
 	sp->loc.x = x;
 	sp->loc.y = y;
 	sp->cur = sp->loc;
-	sp->cursize.width  = width;
-	sp->cursize.height = height;
+	sp->width  = width;
+	sp->height = height;
 	sp->u.msg.dspcur.x = 0;
 	sp->u.msg.dspcur.y = 0;
-	sp->u.msg.canvas = sf_create_surface(width, height, sf0->depth);
+	sp->u.msg.canvas = SDL_CreateRGBSurfaceWithFormat(0, width, height, 32, SDL_PIXELFORMAT_ARGB8888);
 	sp->update = ntmsg_update;
 	
 	return sp;
@@ -72,19 +71,19 @@ sprite_t *nt_sp_msg_new(int no, int x, int y, int width, int height) {
 void nt_sp_free(sprite_t *sp) {
 	if (sp == NULL) return;
 	
-	if (sp->cg1) nt_scg_deref(sp->cg1);
-	if (sp->cg2) nt_scg_deref(sp->cg2);
-	if (sp->cg3) nt_scg_deref(sp->cg3);
+	if (sp->cg1) scg_deref(sp->cg1);
+	if (sp->cg2) scg_deref(sp->cg2);
+	if (sp->cg3) scg_deref(sp->cg3);

 	if (sp->type == SPRITE_MSG) {
-		sf_free(sp->u.msg.canvas);
+		SDL_FreeSurface(sp->u.msg.canvas);
 	}
 	
 	free(sp);
 }

-void nt_sp_set_show(sprite_t *sp, boolean show) {
-	boolean oldshow;
+void nt_sp_set_show(sprite_t *sp, bool show) {
+	bool oldshow;
 	
 	if (sp == NULL) return;
 	
@@ -103,16 +102,16 @@ void nt_sp_set_cg(sprite_t *sp, int no) {
 	if (sp == NULL) return;

 	if (sp->curcg)
-		nt_scg_deref(sp->curcg);
+		scg_deref(sp->curcg);

-	cg = no ? nt_scg_addref(no) : NULL;
+	cg = no ? scg_addref(no) : NULL;
 	
 	if (cg == NULL) {
-		sp->cursize.width  = 0;
-		sp->cursize.height = 0;
+		sp->width  = 0;
+		sp->height = 0;
 	} else {
-		sp->cursize.width  = cg->sf->width;
-		sp->cursize.height = cg->sf->height;
+		sp->width  = cg->sf->w;
+		sp->height = cg->sf->h;
 	}

 	sp->curcg = cg;
@@ -3,8 +3,8 @@
 #define __SPRITE_H__

 #include "portab.h"
-#include "surface.h"
-#include "graphics.h"
+#include <SDL_rect.h>
+#include "sactcg.h"

 #define DEFAULT_UPDATE nt_sp_draw

@@ -22,7 +22,6 @@
 #define SPNO_MSG_KEYANIM 12 // メッセージキー入力アニメーション
 #define SPNO_MSG_ICON_MUTE 13 // メッセージウィンドアイコン

-#define CGMAX 65536
 // 0-9999: reserve for Link CG
 // 2051: メッセージウィンド枠CG
 #define CGNO_MSGFRAME_LCG 2051
@@ -41,25 +40,6 @@
 #define CGNO_MSGFR_BG 10002


-// CG_XX で作るCGの種類
-enum cgtype {
-	CG_NOTUSED = 0,
-	CG_LINKED  = 1,
-	CG_SET     = 2,
-	CG_REVERSE = 3,
-	CG_STRETCH = 4
-};
-
-// cgに関する情報
-struct _cginfo {
-	enum cgtype type;  // CGの種類, 0: 未使用, 1:リンクされている, ...
-	int no;            // CGの番号
-	surface_t *sf;     // CG本体
-	int refcnt;        // 参照カウンタ。０になったら開放してもよい。
-};
-typedef struct _cginfo cginfo_t;
-
-
 enum spritetype {
 	SPRITE_NORMAL = 0,
 	SPRITE_ANIME  = 5,
@@ -73,20 +53,21 @@ struct _sprite {
 	
 	int no;
 	
-	MyDimension cursize;
+	int width;
+	int height;
 	
 	cginfo_t *curcg;
 	cginfo_t *cg1, *cg2, *cg3;
 	
-	boolean show;
+	bool show;
 	
 	int blendrate;
 	
-	MyPoint loc;
+	SDL_Point loc;
 	
-	MyPoint cur;
+	SDL_Point cur;

-	int (* update)(struct _sprite *sp, MyRectangle *updatearea);
+	void (* update)(struct _sprite *sp, SDL_Rect *updatearea);
 	
 	union {
 		struct {
@@ -97,8 +78,8 @@ struct _sprite {
 		} anime;
 		
 		struct {
-			surface_t *canvas;
-			MyPoint dspcur;
+			struct SDL_Surface *canvas;
+			SDL_Point dspcur;
 		} msg;
 	} u;
 };
@@ -107,31 +88,29 @@ typedef struct _sprite sprite_t;


 /* in nt_sprite.c */
-extern sprite_t *nt_sp_new(int no, int cg1, int cg2, int cg3, int type);
-extern sprite_t *nt_sp_msg_new(int no, int x, int y, int width, int height);
-extern void nt_sp_free(sprite_t *sp);
-extern void nt_sp_set_show(sprite_t *sp, boolean show);
-// extern void nt_sp_set_cg(sprite_t *sp, int no);
-extern void nt_sp_set_loc(sprite_t *sp, int x, int y);
+sprite_t *nt_sp_new(int no, int cg1, int cg2, int cg3, int type);
+sprite_t *nt_sp_msg_new(int no, int x, int y, int width, int height);
+void nt_sp_free(sprite_t *sp);
+void nt_sp_set_show(sprite_t *sp, bool show);
+// void nt_sp_set_cg(sprite_t *sp, int no);
+void nt_sp_set_loc(sprite_t *sp, int x, int y);

 /* in nt_sprite_update.c */
-extern int nt_sp_update_clipped();
-extern int nt_sp_update_all(boolean syncscreen);
-extern int nt_sp_updateme(sprite_t *sp);
-extern int nt_sp_updateme_part(sprite_t *sp, int x, int y, int w, int h);
-extern void nt_sp_add_updatelist(sprite_t *sp);
-extern void nt_sp_remove_updatelist(sprite_t *sp);
-extern int nt_sp_draw_wall(sprite_t *sp, MyRectangle *r);
-extern void nt_sp_clear_updatelist(void);
+void nt_sp_update_clipped();
+void nt_sp_update_all(bool syncscreen);
+void nt_sp_updateme(sprite_t *sp);
+void nt_sp_updateme_part(sprite_t *sp, int x, int y, int w, int h);
+void nt_sp_add_updatelist(sprite_t *sp);
+void nt_sp_remove_updatelist(sprite_t *sp);
+void nt_sp_draw_wall(sprite_t *sp, SDL_Rect *r);
+void nt_sp_clear_updatelist(void);

 /* in nt_sprite_draw.c */
-extern int nt_sp_draw(sprite_t *sp, MyRectangle *r);
-extern int nt_sp_draw2(sprite_t *sp, cginfo_t *cg, MyRectangle *r);
-extern void nt_sp_draw_dmap(void* data, void* userdata);
-extern int nt_sp_draw_scg(sprite_t *sp, MyRectangle *r);
+void nt_sp_draw(sprite_t *sp, SDL_Rect *r);
+void nt_sp_draw_scg(sprite_t *sp, SDL_Rect *r);

 /* in nt_sprite_eupdate.c */
-extern int nt_sp_eupdate(int type, int time, int cancel);
+void nt_sp_eupdate(int type, int time, int cancel);


 #endif /* __SPRITE_H__ */
@@ -24,13 +24,11 @@
 #include "config.h"

 #include <stdio.h>
+#include <SDL.h>

 #include "portab.h"
 #include "system.h"
 #include "ags.h"
-#include "graphics.h"
-#include "surface.h"
-#include "ngraph.h"
 #include "sprite.h"

 /*
@@ -38,106 +36,60 @@
 @param sp: 描画するスプライト
 @param r : 再描画する領域
 */
-int nt_sp_draw(sprite_t *sp, MyRectangle *r) {
-	if (sp == NULL) return NG;
-	
-	return nt_sp_draw2(sp, sp->curcg, r);
-}
-
-/*
-  指定の spriteの指定のCGを surface0 に書く
-  (このインターフェイスはもう不要?)
-
-  @param sp: 描画するスプライト
-  @param cg: 描画するCG
- @param r : 再描画する領域
-*/
-int nt_sp_draw2(sprite_t *sp, cginfo_t *cg, MyRectangle *r) {
-	surface_t update;
-	int sx, sy, w, h, dx, dy;
-	
-	if (cg == NULL) return NG;
-	if (cg->sf == NULL) return NG;
+void nt_sp_draw(sprite_t *sp, SDL_Rect *r) {
+	if (sp == NULL) return;
+	cginfo_t *cg = sp->curcg;
+	if (cg == NULL) return;
+	if (cg->sf == NULL) return;

 	// 更新領域の確定
-	update.width  = r->w;
-	update.height = r->h;
-	sx = 0;
-	sy = 0;
-	dx = sp->cur.x - r->x;
-	dy = sp->cur.y - r->y;
-	w = cg->sf->width;
-	h = cg->sf->height;
+	SDL_Rect cg_rect = {0, 0, cg->sf->w, cg->sf->h};
+	int sx = 0;
+	int sy = 0;
+	int dx = sp->cur.x;
+	int dy = sp->cur.y;
+	int w = cg->sf->w;
+	int h = cg->sf->h;
 	
-	if (!gr_clip(cg->sf, &sx, &sy, &w, &h, &update, &dx, &dy)) {
-		return NG;
+	if (!ags_clipCopyRect(&cg_rect, r, &sx, &sy, &dx, &dy, &w, &h)) {
+		return;
 	}
-		
-	dx += r->x;
-	dy += r->y;
-	
-	if (cg->sf->alpha) {
-		// alpha map がある場合
-		gre_BlendUseAMap(sf0, dx, dy,
-				 sf0, dx, dy,
-				 cg->sf, sx, sy, w, h,
-				 cg->sf, sx, sy,
-				 sp->blendrate);
+
+	if (SDL_ISPIXELFORMAT_ALPHA(cg->sf->format->format) || sp->blendrate < 255) {
+		SDL_SetSurfaceBlendMode(cg->sf, SDL_BLENDMODE_BLEND);
+		SDL_SetSurfaceAlphaMod(cg->sf, sp->blendrate);
 	} else {
-		if (sp->blendrate == 255) {
-			// alpha値指定が無い場合
-			gr_copy(sf0, dx, dy, cg->sf, sx, sy, w, h);
-		} else if (sp->blendrate > 0) {
-			// alpha値指定がある場合
-			gre_Blend(sf0, dx, dy,
-				  sf0, dx, dy,
-				  cg->sf, sx, sy, w, h,
-				  sp->blendrate);
-		}
+		SDL_SetSurfaceBlendMode(cg->sf, SDL_BLENDMODE_NONE);
 	}
+	SDL_BlitSurface(cg->sf, &(SDL_Rect){sx, sy, w, h}, main_surface, &(SDL_Rect){dx, dy, w, h});
 	
 	SACT_DEBUG("do update no=%d, sx=%d, sy=%d, w=%d, h=%d, dx=%d, dy=%d",
 		sp->no, sx, sy, w, h, dx, dy);
-	
-	return OK;
 }

 // BlendScreenによる描画
-int nt_sp_draw_scg(sprite_t *sp, MyRectangle *r) {
-	surface_t update;
-	cginfo_t *cg;
-	int sx, sy, w, h, dx, dy;
-	
-	if (sp == NULL) return NG;
-	
-	cg = sp->curcg;
-	
-	if (cg == NULL) return NG;
-	if (cg->sf == NULL) return NG;
+void nt_sp_draw_scg(sprite_t *sp, SDL_Rect *r) {
+	if (sp == NULL) return;
+	cginfo_t *cg = sp->curcg;
+	if (cg == NULL) return;
+	if (cg->sf == NULL) return;
 	
 	// 更新領域の確定
-	update.width  = r->w;
-	update.height = r->h;
-	sx = 0;
-	sy = 0;
-	dx = sp->cur.x - r->x;
-	dy = sp->cur.y - r->y;
-	w = cg->sf->width;
-	h = cg->sf->height;
+	SDL_Rect cg_rect = {0, 0, cg->sf->w, cg->sf->h};
+	int sx = 0;
+	int sy = 0;
+	int dx = sp->cur.x;
+	int dy = sp->cur.y;
+	int w = cg->sf->w;
+	int h = cg->sf->h;
 	
-	if (!gr_clip(cg->sf, &sx, &sy, &w, &h, &update, &dx, &dy)) {
-		return NG;
+	if (!ags_clipCopyRect(&cg_rect, r, &sx, &sy, &dx, &dy, &w, &h)) {
+		return;
 	}
-		
-	dx += r->x;
-	dy += r->y;
 	
-	gre_BlendScreen(sf0, dx, dy,
-			sf0, dx, dy,
-			cg->sf, sx, sy, w, h);
+	SDL_SetSurfaceBlendMode(cg->sf, SDL_BLENDMODE_ADD);
+	SDL_BlitSurface(cg->sf, &(SDL_Rect){sx, sy, w, h}, main_surface, &(SDL_Rect){dx, dy, w, h});
 	
 	SACT_DEBUG("do update no=%d, sx=%d, sy=%d, w=%d, h=%d, dx=%d, dy=%d",
 		sp->no, sx, sy, w, h, dx, dy);
-	
-	return OK;
 }
@@ -25,11 +25,11 @@

 #include "portab.h"
 #include "system.h"
-#include "ngraph.h"
 #include "ags.h"
 #include "input.h"
 #include "sprite.h"
-#include "sdl_core.h"
+#include "gfx.h"
+#include "effect.h"

 /*
  効果つき画面更新
@@ -37,34 +37,33 @@
  @param time: 実行時間(msec)
  @param cancel: キー抜け(0:なし, 1:あり)
 */
-int nt_sp_eupdate(int no, int time, int cancel) {
+void nt_sp_eupdate(int no, int time, int cancel) {
 	if (no == 1013) {
-		nt_sp_update_all(TRUE);
-		return OK;
+		nt_sp_update_all(true);
+		return;
 	}

-	nt_sp_update_all(FALSE);
+	nt_sp_update_all(false);
 	
-	enum sdl_effect_type type = from_sact_effect(no - 100);
+	enum effect_type type = from_sact_effect(no - 100);
 	if (type == EFFECT_INVALID) {
 		WARNING("Unimplemented effect %d", no);
 		type = EFFECT_CROSSFADE;
 	}
-	SDL_Rect rect = { 0, 0, sf0->width, sf0->height };
-	struct sdl_effect *eff = sdl_effect_init(&rect, NULL, 0, 0, sdl_getDIB(), 0, 0, type);
+	SDL_Rect rect = { 0, 0, main_surface->w, main_surface->h };
+	struct effect *eff = effect_init(&rect, NULL, 0, 0, gfx_getDIB(), 0, 0, type);

 	int sttime, curtime;
-	sttime = curtime = sdl_getTicks();
+	sttime = curtime = sys_get_ticks();
 	int edtime = curtime + time;

-	while ((curtime = sdl_getTicks()) < edtime) {
-		sdl_effect_step(eff, (float)(curtime - sttime) / (edtime - sttime));
-		int rest = 16 - (sdl_getTicks() - curtime);
+	while ((curtime = sys_get_ticks()) < edtime) {
+		effect_step(eff, (float)(curtime - sttime) / (edtime - sttime));
+		int rest = 16 - (sys_get_ticks() - curtime);
 		int key = sys_keywait(rest, cancel ? KEYWAIT_CANCELABLE : KEYWAIT_NONCANCELABLE);
 		if (cancel && key)
 			break;
 	}
-	sdl_effect_finish(eff);
+	effect_finish(eff);
 	ags_updateFull();
-	return OK;
 }
@@ -25,15 +25,12 @@

 #include <stdio.h>
 #include <stdlib.h>
+#include <SDL.h>

 #include "portab.h"
 #include "system.h"
 #include "list.h"
 #include "ags.h"
-#include "graphics.h"
-// #include "sact.h"
-#include "surface.h"
-#include "ngraph.h"
 #include "sprite.h"

 // スプライト再描画間の間に変更のあったスプライトの領域の和
@@ -43,22 +40,22 @@ static SList *updatearea;
 static SList *updatelist;

 static void disjunction(void* region, void* data);
-static MyRectangle get_updatearea();
+static SDL_Rect get_updatearea();
 static void do_update_each(void* data, void* userdata);

 // 領域１と領域２をすべて含む矩形領域を計算
 static void disjunction(void* region, void* data) {
-	MyRectangle *r1 = (MyRectangle *)region;
-	MyRectangle *r2 = (MyRectangle *)data;
+	SDL_Rect *r1 = (SDL_Rect *)region;
+	SDL_Rect *r2 = (SDL_Rect *)data;
 	SDL_UnionRect(r1, r2, r2);
 	free(r1);
 }

 // 更新の必要なスプライトの領域の和をとってクリッピングする
-static MyRectangle get_updatearea() {
-	MyRectangle clip = {0, 0, 0, 0};
-	MyRectangle rsf0 = {0, 0, sf0->width, sf0->height};
-	MyRectangle result;
+static SDL_Rect get_updatearea() {
+	SDL_Rect clip = {0, 0, 0, 0};
+	SDL_Rect screen = {0, 0, main_surface->w, main_surface->h};
+	SDL_Rect result;
 	
 	slist_foreach(updatearea, disjunction, &clip);
 	
@@ -66,7 +63,7 @@ static MyRectangle get_updatearea() {
 	updatearea = NULL;
 	
 	// surface0との領域の積をとる
-	SDL_IntersectRect(&rsf0, &clip, &result);
+	SDL_IntersectRect(&screen, &clip, &result);
 	
 	SACT_DEBUG("clipped area x=%d y=%d w=%d h=%d",
 		result.x, result.y, result.w, result.h);
@@ -77,7 +74,7 @@ static MyRectangle get_updatearea() {
 // updatelist に登録してあるすべてのスプライトを更新
 static void do_update_each(void* data, void* userdata) {
 	sprite_t *sp = (sprite_t *)data;
-	MyRectangle *r = (MyRectangle *)userdata;
+	SDL_Rect *r = (SDL_Rect *)userdata;
 	
 	// 非表示の場合はなにもしない
 	if (!sp->show) return;
@@ -92,9 +89,9 @@ static void do_update_each(void* data, void* userdata) {
  画面全体の更新
  @param syncscreen: surface0 に描画したものを Screen に反映させるかどうか
 */
-int nt_sp_update_all(boolean syncscreen) {
+void nt_sp_update_all(bool syncscreen) {
 	// 画面全体を更新領域に
-	MyRectangle r = {0, 0, sf0->width, sf0->height };
+	SDL_Rect r = {0, 0, main_surface->w, main_surface->h };
 	
 	// updatelistに登録してあるスプライトを再描画
 	// updatelistはスプライトの番号順に並んでいる
@@ -106,54 +103,48 @@ int nt_sp_update_all(boolean syncscreen) {
 	if (syncscreen) {
 		ags_updateFull();
 	}
-	
-	return OK;
 }

 /*
  画面の一部を更新
   updateme(_part)で登録した更新が必要なspriteの和の領域をupdate
 */
-int nt_sp_update_clipped() {
-	MyRectangle r;
+void nt_sp_update_clipped() {
+	SDL_Rect r;
 	
 	// 更新領域の確定
 	r = get_updatearea();
 	
 	if (SDL_RectEmpty(&r))
-		return OK;
+		return;

 	// 更新領域に入っているスプライトの再描画
 	slist_foreach(updatelist, do_update_each, &r);
 	
 	// 更新領域を Window に転送
 	ags_updateArea(r.x, r.y, r.w, r.h);
-	
-	return OK;
 }

 /*
  sprite全体の更新を登録
  @param sp: 更新するスプライト
 */
-int nt_sp_updateme(sprite_t *sp) {
-	MyRectangle *r;
+void nt_sp_updateme(sprite_t *sp) {
+	SDL_Rect *r;
 	
-	if (sp == NULL) return NG;
-	if (sp->cursize.width == 0 || sp->cursize.height == 0) return NG;
+	if (sp == NULL) return;
+	if (sp->width == 0 || sp->height == 0) return;
 	
-	r = malloc(sizeof(MyRectangle));
+	r = malloc(sizeof(SDL_Rect));
 	r->x = sp->cur.x;
 	r->y = sp->cur.y;
-	r->w = sp->cursize.width;
-	r->h = sp->cursize.height;
+	r->w = sp->width;
+	r->h = sp->height;
 	
 	updatearea = slist_append(updatearea, r);
 	
 	SACT_DEBUG("x = %d, y = %d, spno = %d w=%d,h=%d",
 		r->x, r->y, sp->no, r->w, r->h);
-	
-	return OK;
 }

 /*
@@ -164,13 +155,13 @@ int nt_sp_updateme(sprite_t *sp) {
  @param w: 更新領域幅
  @param h: 更新領域高さ
 */
-int nt_sp_updateme_part(sprite_t *sp, int x, int y, int w, int h) {
-	MyRectangle *r;
+void nt_sp_updateme_part(sprite_t *sp, int x, int y, int w, int h) {
+	SDL_Rect *r;
 	
-	if (sp == NULL) return NG;
-	if (w == 0 || h == 0) return NG;
+	if (sp == NULL) return;
+	if (w == 0 || h == 0) return;
 	
-	r = malloc(sizeof(MyRectangle));
+	r = malloc(sizeof(SDL_Rect));
 	r->x = sp->cur.x + x;
 	r->y = sp->cur.y + y;
 	r->w = w;
@@ -180,8 +171,6 @@ int nt_sp_updateme_part(sprite_t *sp, int x, int y, int w, int h) {
 	
 	SACT_DEBUG("x = %d, y = %d, spno = %d w=%d,h=%d",
 		r->x, r->y, sp->no, r->w, r->h);
-	
-	return OK;
 }

 // スプライトの番号順に更新するためにリストに順番に要れるためのcallbck
@@ -214,18 +203,6 @@ void nt_sp_clear_updatelist(void) {
 }

 // デフォルトの壁紙update
-int nt_sp_draw_wall(sprite_t *sp, MyRectangle *area) {
-	int sx, sy, w, h;
-	
-	sx = area->x;
-	sy = area->y;
-	w  = area->w;
-	h  = area->h;
-	gr_fill(sf0, sx, sy, w, h, 0, 0, 0);
-	
-	SACT_DEBUG("do update no=%d, sx=%d, sy=%d, w=%d, h=%d",
-		sp->no, sx, sy, w, h);
-	
-	return OK;
+void nt_sp_draw_wall(sprite_t *sp, SDL_Rect *area) {
+	SDL_FillRect(main_surface, area, SDL_MapRGB(main_surface->format, 0, 0, 0));
 }
-
@@ -32,9 +32,8 @@
 #include "nact.h"
 #include "alk.h"
 #include "music.h"
-#include "sdl_core.h"
+#include "gfx.h"
 #include "input.h"
-#include "ngraph.h"
 #include "cg.h"
 #include "jpeg.h"

@@ -53,27 +52,29 @@ static void ndd_run(int demonum) {
 	if (mus)
 		musbgm_play(mus, 0, 100, 0);

-	uint32_t start = sdl_getTicks();
+	uint32_t start = sys_get_ticks();
 	while (!nact->is_quit) {
-		int i = (sdl_getTicks() - start) / (1000 / FPS);
+		int i = (sys_get_ticks() - start) / (1000 / FPS);
 		if (i >= alk->datanum)
 			break;

 		cgdata *cg = jpeg_extract(alk->entries[i].data, alk->entries[i].size);
 		if (cg) {
-			gr_drawimage24(sf0, cg, 0, 0);
+			SDL_Surface *sf = SDL_CreateRGBSurfaceWithFormatFrom(cg->pic, cg->width, cg->height, 24, cg->width * 3, SDL_PIXELFORMAT_RGB24);
+			SDL_BlitSurface(sf, NULL, main_surface, NULL);
 			ags_updateFull();
+			SDL_FreeSurface(sf);
 			cgdata_free(cg);
 		} else {
 			WARNING("Cannot decode CG %d in %s", i, alk_path);
 		}

-		int wait_ms = (i + 1) * (1000 / FPS) - (sdl_getTicks() - start);
+		int wait_ms = (i + 1) * (1000 / FPS) - (sys_get_ticks() - start);
 		if (wait_ms > 0) {
 			if (sys_keywait(wait_ms, KEYWAIT_CANCELABLE))
 				break;
 		} else {
-			sdl_updateScreen();
+			gfx_updateScreen();
 			if (sys_getInputInfo())
 				break;
 		}
@@ -89,7 +90,7 @@ static void Init() {
 	int p1 = getCaliValue(); /* ISys3x */
 	int p2 = getCaliValue(); /* IWinMsg */
 	int p3 = getCaliValue(); /* ITimer */
-	int *var = getCaliVariable();
+	vmvar_t *var = getCaliVariable();
 	
 	*var = 1;
 	
@@ -51,7 +51,7 @@ static void Get() {
 	  var: 結果を返す変数
 	*/
 	int num  = getCaliValue();
-	int *var = getCaliVariable();
+	vmvar_t *var = getCaliVariable();
 	
 	if (num == 0 || num == 1) {
 		*var = num;
@@ -65,7 +65,7 @@ static void Get() {
 static void GetNoOverlap() {
 	int min  = getCaliValue();
 	int n    = getCaliValue();
-	int *var = getCaliVariable();
+	vmvar_t *var = getCaliVariable();

 	*var = (int)(genrand() * n) + min;

@@ -42,13 +42,13 @@ static void CreateChannel(void) {
 static void Prepare(void) {
 	int ch = getCaliValue();
 	int no = getCaliValue();
-	int *result = getCaliVariable();
+	vmvar_t *result = getCaliVariable();

 	if (ch == 0) {
 		current_no = no;
 		*result = 1;
 	} else {
-		*result = muspcm_load_bgm(SLOT, no) == OK;
+		*result = muspcm_load_bgm(SLOT, no) ? 1 : 0;
 	}
 	TRACE("S3xMusic.Prepare %d, %d => %d:", ch, no, *result);
 }
@@ -97,7 +97,7 @@ static void PlayPosSample(void) {

 static void IsPlay(void) {
 	int ch = getCaliValue();
-	int *result = getCaliVariable();
+	vmvar_t *result = getCaliVariable();

 	if (ch == 0) {
 		*result = current_no && musbgm_isplaying(current_no);
@@ -127,10 +127,10 @@ static void Restart(void) {

 static void GetPlayPos(void) {
 	int ch = getCaliValue();
-	int *hour = getCaliVariable();
-	int *min = getCaliVariable();
-	int *sec = getCaliVariable();
-	int *msec = getCaliVariable();
+	vmvar_t *hour = getCaliVariable();
+	vmvar_t *min = getCaliVariable();
+	vmvar_t *sec = getCaliVariable();
+	vmvar_t *msec = getCaliVariable();
 	if (ch == 0) {
 		int time = musbgm_getpos(current_no);
 		*hour = time / 360000;
@@ -149,8 +149,8 @@ static void GetPlayPos(void) {

 static void GetPlayPosSample(void) {
 	int p1 = getCaliValue();
-	int *var1 = getCaliVariable();
-	int *var2 = getCaliVariable();
+	vmvar_t *var1 = getCaliVariable();
+	vmvar_t *var2 = getCaliVariable();
 	TRACE_UNIMPLEMENTED("S3xMusic.GetPlayPosSample %d, %p, %p:", p1, var1, var2);
 }

@@ -192,7 +192,7 @@ static void FadeVolume(void) {

 static void IsFade(void) {
 	int ch = getCaliValue();
-	int *result = getCaliVariable();
+	vmvar_t *result = getCaliVariable();
 	*result = 0;
 	TRACE_UNIMPLEMENTED("S3xMusic.IsFade %d => %d:", ch, *result);
 }
@@ -25,6 +25,7 @@

 #include <stdio.h>
 #include <string.h>
+#include <SDL.h>
 #ifdef __EMSCRIPTEN__
 #include <emscripten.h>
 #endif
@@ -46,8 +47,6 @@
 #include "sactsound.h"
 #include "sactcrypto.h"
 #include "sactchart.h"
-#include "ngraph.h"
-#include "surface.h"
 #include "sactamask.h"

 /*
@@ -147,20 +146,20 @@ static void Init() {
 	}
 	
 	// create depth map
-	sact.dmap = sf_create_pixel(sf0->width, sf0->height, 16);
+	sact.dmap = SDL_CreateRGBSurface(0, main_surface->w, main_surface->h, 16, 0, 0, 0, 0);
 	
 	// その他 System35 のデフォルト動作の変更
-	ags_setAntialiasedStringMode(TRUE);
+	ags_setAntialiasedStringMode(true);
 	sys_setHankakuMode(2); // 全角半角変換無し
-	ags_autorepeat(FALSE); // key auto repeat off
+	ags_autorepeat(false); // key auto repeat off
 	
 	if (sact.version >= 120) {
-		sact.logging = TRUE;
+		sact.logging = true;
 #ifdef __EMSCRIPTEN__
 		EM_ASM( xsystem35.texthook.disableWheelEvent(0xffffffff) );
 #endif
 	} else {
-		sact.logging = FALSE;
+		sact.logging = false;
 	}
 	
 	TRACE("SACT.Init %d:", p1);
@@ -267,7 +266,7 @@ static void SpriteDeleteCount() {
 *   現在設定されているスプライト状態を画面に反映(~SP_UPDATE)
 */
 static void Draw() {
-	sp_update_all(TRUE);
+	sp_update_all(true);

 	TRACE("SACT.Draw:");
 }
@@ -637,9 +636,9 @@ static void QuakeSprite() {
 */
 static void QuerySpriteIsExist() {
 	int wNum = getCaliValue();
-	int *var = getCaliVariable();
+	vmvar_t *var = getCaliVariable();

-	sp_query_isexist(wNum, var);
+	*var = sp_exists(wNum) ? 1 : 0;
 	
 	TRACE("SACT.QuerySpriteIsExist %d,%p:", wNum, var);
 }
@@ -655,10 +654,10 @@ static void QuerySpriteIsExist() {
 */
 static void QuerySpriteInfo() {
 	int wNum   = getCaliValue();
-	int *vType = getCaliVariable();
-	int *vCG1  = getCaliVariable();
-	int *vCG2  = getCaliVariable();
-	int *vCG3  = getCaliVariable();
+	vmvar_t *vType = getCaliVariable();
+	vmvar_t *vCG1  = getCaliVariable();
+	vmvar_t *vCG2  = getCaliVariable();
+	vmvar_t *vCG3  = getCaliVariable();
 	
 	sp_query_info(wNum, vType, vCG1, vCG2, vCG3);
 	
@@ -673,7 +672,7 @@ static void QuerySpriteInfo() {
 */
 static void QuerySpriteShow() {
 	int wNum = getCaliValue();
-	int *vShow = getCaliVariable();
+	vmvar_t *vShow = getCaliVariable();

 	sp_query_show(wNum, vShow);
 	
@@ -689,8 +688,8 @@ static void QuerySpriteShow() {
 */
 static void QuerySpritePos() {
 	int wNum = getCaliValue();
-	int *vX  = getCaliVariable();
-	int *vY  = getCaliVariable();
+	vmvar_t *vX  = getCaliVariable();
+	vmvar_t *vY  = getCaliVariable();
 	
 	sp_query_pos(wNum, vX, vY);
 	
@@ -706,8 +705,8 @@ static void QuerySpritePos() {
 */
 static void QuerySpriteSize() {
 	int wNum     = getCaliValue();
-	int *vWidth  = getCaliVariable();
-	int *vHeight = getCaliVariable();
+	vmvar_t *vWidth  = getCaliVariable();
+	vmvar_t *vHeight = getCaliVariable();
 	
 	sp_query_size(wNum, vWidth, vHeight);
 	
@@ -723,8 +722,8 @@ static void QuerySpriteSize() {
 */
 static void QueryTextPos() {
 	int wNum = getCaliValue();
-	int *vX  = getCaliVariable();
-	int *vY  = getCaliVariable();
+	vmvar_t *vX  = getCaliVariable();
+	vmvar_t *vY  = getCaliVariable();
 	
 	sp_query_textpos(wNum, vX, vY);
 	
@@ -763,9 +762,9 @@ static void CG_Reset() {
 */
 static void CG_QueryType() {
 	int wNumCG = getCaliValue();
-	int *vType = getCaliVariable();
+	vmvar_t *vType = getCaliVariable();
 	
-	scg_querytype(wNumCG, vType);
+	*vType = scg_querytype(wNumCG);
 	
 	TRACE("SACT.CG_QueryType %d,%p:", wNumCG, vType);
 }
@@ -779,8 +778,8 @@ static void CG_QueryType() {
 */
 static void CG_QuerySize() {
 	int wNumCG   = getCaliValue();
-	int *vWidth  = getCaliVariable();
-	int *vHeight = getCaliVariable();
+	vmvar_t *vWidth  = getCaliVariable();
+	vmvar_t *vHeight = getCaliVariable();
 	
 	scg_querysize(wNumCG, vWidth, vHeight);
 	
@@ -795,9 +794,9 @@ static void CG_QuerySize() {
 */
 static void CG_QueryBpp() {
 	int wNumCG = getCaliValue();
-	int *vBpp  = getCaliVariable();
+	vmvar_t *vBpp  = getCaliVariable();
 	
-	scg_querybpp(wNumCG, vBpp);
+	*vBpp = scg_querybpp(wNumCG);
 	
 	TRACE("SACT.CG_QueryBpp %d,%p:", wNumCG, vBpp);
 }
@@ -810,9 +809,9 @@ static void CG_QueryBpp() {
 */
 static void CG_ExistAlphaMap() {
 	int wNumCG = getCaliValue();
-	int *vMask = getCaliVariable();
+	vmvar_t *vMask = getCaliVariable();
 	
-	scg_existalphamap(wNumCG, vMask);
+	*vMask = scg_existalphamap(wNumCG) ? 1 : 0;
 	
 	TRACE("SACT.CG_ExistAlphaMap %d,%p:", wNumCG, vMask);
 }
@@ -1022,12 +1021,12 @@ static void CG_PartCopy() {
 *   @param vKey: 入力されたキー
 */
 static void WaitKeySimple() {
-	int *vKey = getCaliVariable();
+	vmvar_t *vKey = getCaliVariable();

 	TRACE("SACT.WaitKeySimple %d:", vKey);

 	// とりあえず全更新
-	sp_update_all(TRUE);
+	sp_update_all(true);
 	
 	sact.waittype = KEYWAIT_SIMPLE;
 	sact.waitkey = -1;
@@ -1072,10 +1071,10 @@ static void WaitKeyMessage() {
 *   @param vRsv2: 予約
 */
 static void WaitKeySprite() {
-	int *vOK = getCaliVariable();
-	int *vRND = getCaliVariable();
-	int *vRsv1 = getCaliVariable();
-	int *vRsv2 = getCaliVariable();
+	vmvar_t *vOK = getCaliVariable();
+	vmvar_t *vRND = getCaliVariable();
+	vmvar_t *vRsv1 = getCaliVariable();
+	vmvar_t *vRsv2 = getCaliVariable();
 	
 	TRACE("SACT.WaitKeySprite %p,%p,%p,%p:", vOK, vRND, vRsv1, vRsv2);
 	
@@ -1093,7 +1092,7 @@ static void WaitKeySprite() {
 static void PeekKey() {
 	static int prevKeyCode = NUM_KEYCODES;
 	int nKeyCode = getCaliValue();
-	int *vResult = getCaliVariable();
+	vmvar_t *vResult = getCaliVariable();

 	// This function is called successively with different nKeyCodes.
 	// Only the first call hits the scheduler.
@@ -1122,8 +1121,8 @@ static void WaitMsgSkipKeyUp() {
 *   @param wTime: タイムアウト時間 (1/100sec)
 */
 static void WaitKeySimpleTimeOut() {
-	int *vRND = getCaliVariable();
-	int *vD03 = getCaliVariable();
+	vmvar_t *vRND = getCaliVariable();
+	vmvar_t *vD03 = getCaliVariable();
 	int wTime = getCaliValue();

 	sact.waittype = KEYWAIT_SIMPLE;
@@ -1154,11 +1153,11 @@ static void WaitKeySimpleTimeOut() {
 *   @param wTime: タイムアウト時間 (1/100sec)
 */
 static void WaitKeySpriteTimeOut() {
-	int *vOK = getCaliVariable();
-	int *vRND = getCaliVariable();
-	int *vD01 = getCaliVariable();
-	int *vD02 = getCaliVariable();
-	int *vD03 = getCaliVariable();
+	vmvar_t *vOK = getCaliVariable();
+	vmvar_t *vRND = getCaliVariable();
+	vmvar_t *vD01 = getCaliVariable();
+	vmvar_t *vD02 = getCaliVariable();
+	vmvar_t *vD03 = getCaliVariable();
 	int wTime = getCaliValue();
 	
 	sp_keywait(vOK, vRND, vD01, vD02, vD03, wTime);
@@ -1172,7 +1171,7 @@ static void WaitKeySpriteTimeOut() {
 *   @param vSkip:
 */
 static void QueryMessageSkip() {
-	int *vSkip = getCaliVariable();
+	vmvar_t *vSkip = getCaliVariable();

 	*vSkip = msgskip_isSkipping() ? 1 : 0;
 	
@@ -1220,7 +1219,7 @@ static void MessageOutput() {
 	int wMessageSpeed  = getCaliValue();
 	int wMessageLineSpace = getCaliValue();
 	int wMessageAlign   = 0;
-	int *vMessageLength  = NULL;
+	vmvar_t *vMessageLength  = NULL;
 	
 	if (sact.version >= 110) {
 		wMessageAlign  = getCaliValue();
@@ -1267,7 +1266,7 @@ static void MessageOutputEx() {
 	int wRubySize      = getCaliValue();
 	int wRubyFont      = getCaliValue();
 	int wRubyLineSpace = getCaliValue();
-	int *vLength = NULL;
+	vmvar_t *vLength = NULL;
 	
 	if (sact.version >= 120) {
 		vLength = getCaliVariable();
@@ -1312,9 +1311,9 @@ static void MessageClear() {
 *   @param wResult: 結果を返す変数
 */
 static void MessageIsEmpty() {
-	int *wResult = getCaliVariable();
+	vmvar_t *wResult = getCaliVariable();

-	*wResult = smsg_is_empty();
+	*wResult = smsg_is_empty() ? 1 : 0;
 	
 	TRACE("SACT.MessageIsEmpty %p:", wResult);
 }
@@ -1326,7 +1325,7 @@ static void MessageIsEmpty() {
 *   @param nTopStringNum: バッファを取得する文字列変数の最初
 */
 static void MessagePeek() {
-	int *vCount = getCaliVariable();
+	vmvar_t *vCount = getCaliVariable();
 	int nTopStringNum = getCaliValue();

 	*vCount = smsg_peek(nTopStringNum);
@@ -1339,7 +1338,7 @@ static void MessagePeek() {
 *   ログ採取停止
 */
 static void Log_Stop() {
-	sact.logging = FALSE;
+	sact.logging = false;
 	TRACE("SACT.Log_Stop:");
 }

@@ -1348,7 +1347,7 @@ static void Log_Stop() {
 *   ログ採取開始
 */
 static void Log_Start() {
-	sact.logging = TRUE;
+	sact.logging = true;
 	TRACE("SACT.Log_Start:");
 }

@@ -1389,7 +1388,7 @@ static void MenuAdd() {
 *   @param nAlign: 行そろえ (0:左, 1:中央, 2: 右) (1.1~)
 */
 static void MenuOpen() {
-	int *wMenuResult = getCaliVariable();
+	vmvar_t *wMenuResult = getCaliVariable();
 	int wNum         = getCaliValue();
 	int wChoiceSize  = getCaliValue();
 	int wMenuOutSpc  = getCaliValue();
@@ -1465,7 +1464,7 @@ static void Numeral_SetCG() {
 static void Numeral_GetCG() {
 	int nNum = getCaliValue();
 	int nIndex = getCaliValue();
-	int *vCG = getCaliVariable();
+	vmvar_t *vCG = getCaliVariable();
 	
 	sp_num_getcg(nNum, nIndex, vCG);
 	
@@ -1498,8 +1497,8 @@ static void Numeral_SetPos() {
 */
 static void Numeral_GetPos() {
 	int nNum = getCaliValue();
-	int *vX = getCaliVariable();
-	int *vY = getCaliVariable();
+	vmvar_t *vX = getCaliVariable();
+	vmvar_t *vY = getCaliVariable();
 	
 	sp_num_getpos(nNum, vX, vY);
 	
@@ -1529,7 +1528,7 @@ static void Numeral_SetSpan() {
 */
 static void Numeral_GetSpan() {
 	int nNum = getCaliValue();
-	int *vSpan = getCaliVariable();
+	vmvar_t *vSpan = getCaliVariable();

 	sp_num_getspan(nNum, vSpan);
 	
@@ -1597,7 +1596,7 @@ static void TimerSet() {
 */
 static void TimerGet() {
 	int wTimerID = getCaliValue();
-	int *vRND = getCaliVariable();
+	vmvar_t *vRND = getCaliVariable();

 	*vRND = stimer_get(wTimerID);
 	
@@ -1614,10 +1613,10 @@ static void TimerWait() {
 	int wTimerID = getCaliValue();
 	int wCount = getCaliValue();

-	while (wCount > stimer_get(wTimerID) && !nact->is_quit) {
-		sys_keywait(10, KEYWAIT_NONCANCELABLE);
-	}
-	
+	int msec = (wCount - stimer_get(wTimerID)) * 10;
+	if (msec > 0)
+		sys_keywait(msec, KEYWAIT_CTRL_CANCELABLE);
+
 	TRACE("SACT.TimerWait %d,%d:", wTimerID, wCount);
 }

@@ -1628,9 +1627,9 @@ static void TimerWait() {
 */
 static void Wait() {
 	int wCount = getCaliValue();
-	
-	sys_keywait(wCount*10, KEYWAIT_NONCANCELABLE);
-	
+
+	sys_keywait(wCount * 10, KEYWAIT_CTRL_CANCELABLE);
+
 	TRACE("SACT.Wait %d:", wCount);
 }

@@ -1697,7 +1696,7 @@ static void SoundWait() {
 */
 static void SoundWaitKey() {
 	int wNum = getCaliValue();
-	int *vKey = getCaliVariable();
+	vmvar_t *vKey = getCaliVariable();
 	
 	ssnd_waitkey(wNum, vKey);
 	
@@ -1798,7 +1797,7 @@ static void SpriteSoundOB() {
 */
 static void MusicCheck() {
 	int wNum = getCaliValue();
-	int *vRND = getCaliVariable();
+	vmvar_t *vRND = getCaliVariable();
 	
 	*vRND = ald_exists(DRIFILE_BGM, wNum - 1) ? 1 : 0;
 	
@@ -1813,7 +1812,7 @@ static void MusicCheck() {
 */
 static void MusicGetLength() {
 	int wNum = getCaliValue();
-	int *vRND = getCaliVariable();
+	vmvar_t *vRND = getCaliVariable();
 	
 	*vRND = musbgm_getlen(wNum);
 	
@@ -1828,7 +1827,7 @@ static void MusicGetLength() {
 */
 static void MusicGetPos() {
 	int wNum = getCaliValue();
-	int *vRND = getCaliVariable();
+	vmvar_t *vRND = getCaliVariable();
 	
 	*vRND = musbgm_getpos(wNum);
 	
@@ -1938,7 +1937,7 @@ static void MusicWaitPos() {
 */
 static void SoundGetLinkNum() {
 	int wNum = getCaliValue();
-	int *vRND = getCaliVariable();
+	vmvar_t *vRND = getCaliVariable();

 	*vRND = ssnd_getlinknum(wNum);
 	
@@ -1958,7 +1957,7 @@ static void SoundGetLinkNum() {
 *     pos = ((pos2-pos1) / (val2-val1)) * (val-val1) + pos1
 */
 static void ChartPos() {
-	int *pos = getCaliVariable();
+	vmvar_t *pos = getCaliVariable();
 	int pos1 = getCaliValue();
 	int pos2 = getCaliValue();
 	int val1 = getCaliValue();
@@ -2003,7 +2002,7 @@ static void Maze_Create() {
 * SACT.Maze_Get (1.0~)
 */
 static void Maze_Get() {
-	int *p1 = getCaliVariable();
+	vmvar_t *p1 = getCaliVariable();
 	int p2 = getCaliValue();
 	int p3 = getCaliValue();

@@ -2014,7 +2013,7 @@ static void Maze_Get() {
 * SACT.EncryptWORD (1.0~)
 */
 static void EncryptWORD() {
-	int *array = getCaliVariable();
+	vmvar_t *array = getCaliVariable();
 	int num = getCaliValue();
 	int key = getCaliValue();

@@ -2027,7 +2026,7 @@ static void EncryptWORD() {
 * SACT.DecryptWORD (1.0~)
 */
 static void DecryptWORD() {
-	int *array = getCaliVariable();
+	vmvar_t *array = getCaliVariable();
 	int num = getCaliValue();
 	int key = getCaliValue();

@@ -2093,7 +2092,7 @@ static void XMenuRegister() {
 */
 static void XMenuGetNum() {
 	int nRegiNum = getCaliValue();
-	int *vMenuID = getCaliVariable();
+	vmvar_t *vMenuID = getCaliVariable();
 	
 	*vMenuID = spxm_getnum(nRegiNum);
 	
@@ -2146,7 +2145,7 @@ static void SACT_reset(void) {
 	sp_reset();

 	scg_freeall();
-	sf_free(sact.dmap);
+	SDL_FreeSurface(sact.dmap);
 	memset(&sact, 0, sizeof(sact));
 }

@@ -25,20 +25,16 @@
 #define __SACT_H__

 #include "config.h"
-
+#include <SDL_rect.h>
 #include "portab.h"
 #include "list.h"
-#include "graphics.h"
-#include "surface.h"
+#include "ags.h"
 #include "sacttimer.h"
-#include "variable.h"
+#include "sactcg.h"

 // スプライトの最大数
 #define SPRITEMAX 21845

-// CGの最大数
-#define CGMAX 63336
-
 // メッセージの最大長さ
 #define MSGBUFMAX 257*10

@@ -60,24 +56,6 @@ typedef struct {
 	char *dst; // 置き換え文字列
 } strexchange_t;

-// CG_XX で作るCGの種類
-enum cgtype {
-	CG_NOTUSED = 0,
-	CG_LINKED  = 1,
-	CG_SET     = 2,
-	CG_REVERSE = 3,
-	CG_STRETCH = 4
-};
-
-// cgに関する情報
-struct _cginfo {
-	enum cgtype type;  // CGの種類, 0: 未使用, 1:リンクされている, ...
-	int no;            // CGの番号
-	surface_t *sf;     // CG本体
-	int refcnt;        // 参照カウンタ。０になったら開放してもよい。
-};
-typedef struct _cginfo cginfo_t;
-
 // スプライトのタイプ
 enum spritetype {
 	SPRITE_NORMAL = 0,
@@ -107,7 +85,8 @@ struct _sprite {
 	int numsound1, numsound2, numsound3;
 	
 	// 初期 sprite の大きさ(cg1の大きさ)
-	MyDimension cursize;
+	int width;
+	int height;
 	
 	// それぞれの状態で表示する CG
 	cginfo_t *cg1, *cg2, *cg3;
@@ -116,8 +95,8 @@ struct _sprite {
 	cginfo_t *curcg;
 	
 	// スプライトを表示するか
-	boolean show;
-	boolean show_save; // Zkey hide save用
+	bool show;
+	bool show_save; // Zkey hide save用
 	
 	// 表示する際のブレンド率 0:全く見えない, 255: 通常表示
 	int blendrate; 
@@ -126,10 +105,10 @@ struct _sprite {
 	int freezed_state;
 	
 	// 表示位置 (SetPos)
-	MyPoint loc;
+	SDL_Point loc;
 	
 	// 現在のスプライトの表示位置
-	MyPoint cur;
+	SDL_Point cur;
 	
 	// event callback
 	int (* eventcb)(struct _sprite *sp, agsevent_t *e);  // for key/mouse
@@ -137,27 +116,27 @@ struct _sprite {
        // sprite削除時の callback
 	void (* remove)(struct _sprite *sp);
 	// spriteを再描画するときの callback
-	int  (* update)(struct _sprite *sp);
+	void (* update)(struct _sprite *sp);
 	
-	boolean focused; // forcusを得ているか
-	boolean pressed; // このsprite上でマウスが押されているか
+	bool focused; // forcusを得ているか
+	bool pressed; // このsprite上でマウスが押されているか
 	
 	SList *expsp; // 説明スプライトのリスト
 	
 	// move command 用パラメータ
 	struct {
-		MyPoint to;     // 移動先
+		SDL_Point to;     // 移動先
 		int time;       // 移動完了時間
 		int speed;      // 移動速度
 		int starttime;  // 移動開始時刻
 		int endtime;    // 移動終了予定時刻
-		boolean moving; // 移動中かどうか
+		bool moving; // 移動中かどうか
 	} move;
 	
 	// SACT.Numeral用パラメータ
 	struct {
 		int cg[10];
-		MyPoint pos;
+		SDL_Point pos;
 		int span;
 	} numeral;
 	
@@ -170,8 +149,8 @@ struct _sprite {
 		
 		// ゲットスプライト
 		struct {
-			boolean dragging;  // ドラッグ中
-			MyPoint dragstart; // ドラッグ開始位置
+			bool dragging;  // ドラッグ中
+			SDL_Point dragstart; // ドラッグ開始位置
 		} get;

 		// プットスプライト
@@ -190,8 +169,8 @@ struct _sprite {
 		// メッセージスプライト
 		struct {
 			SList    *buf;       // 表示する文字のリスト
-			surface_t *canvas;    // 文字を描画するsurface
-			MyPoint    dspcur;    // 現在の表示位置
+			struct SDL_Surface *canvas;
+			SDL_Point    dspcur;    // 現在の表示位置
 		} msg;
 	} u;
 };
@@ -209,11 +188,9 @@ struct _sact {
 	SList *sp_quake;  // Quakeで揺らすスプライトのリスト
 	
 	SList *updatelist; // 再描画するスプライトのリスト
-	
-	cginfo_t *cg[CGMAX]; // cgまたはCG_xxで作った CG
-	
+
 	// 座標系の原点
-	MyPoint origin;
+	SDL_Point origin;
 	
 	// 文字列 replce 用
 	SList *strreplace;
@@ -234,7 +211,7 @@ struct _sact {
 		int align; // 行そろえ
 		void (* cbmove)(agsevent_t *);
 		void (* cbrelease)(agsevent_t *);
-		surface_t   *charcanvas;
+		struct SDL_Surface *charcanvas;
 	} sel;
 	
 	// event listener
@@ -247,14 +224,11 @@ struct _sact {
 	int movestarttime; // 一斉に移動を開始するための開始時間
 	int movecurtime;
 	
-	MyRectangle updaterect; // 更新が必要なspriteの領域の和
-	
-	// sact timer
-	stimer_t timer[65536];
+	SDL_Rect updaterect; // 更新が必要なspriteの領域の和
 	
 	// DnDに関するもの
 	sprite_t *draggedsp;  // drag中のスプライト
-	boolean dropped;      // スプライトがドロップされたかどうか
+	bool dropped;      // スプライトがドロップされたかどうか
 	
 	// keywaitの種類
 	int waittype;
@@ -273,15 +247,15 @@ struct _sact {
 	int numsoundob;
 	
 	// depth map
-	surface_t *dmap;
+	struct SDL_Surface *dmap;
 	
-	boolean zhiding;  // Zkeyによる隠し中
+	bool zhiding;  // Zkeyによる隠し中
 	int     zofftime;
-	boolean zdooff;
+	bool zdooff;
 	
 	// バックログ
-	boolean logging;
-	List  *log;
+	bool logging;
+	List *log;  // UTF-8 strings
 };
 typedef struct _sact sact_t;

@@ -25,23 +25,18 @@

 #include <stdio.h>
 #include <stdlib.h>
-#include <string.h>
-#include <errno.h>
+#include <SDL.h>

 #include "portab.h"
 #include "system.h"
 #include "LittleEndian.h"
-#include "input.h"
+#include "ags.h"
 #include "sact.h"
-#include "surface.h"
-#include "ngraph.h"
+#include "pms.h"
 #include "sprite.h"
-#include "sdl_core.h"
+#include "effect.h"
 #include "mmap.h"

-static surface_t *smask_get(int no);
-static surface_t *smask_mul(surface_t *sf, int val);
-
 // SACTEFAM を使ったマスク
 typedef struct {
 	mmap_t *mmap;
@@ -52,24 +47,14 @@ typedef struct {

 static SACTEFAM_t am;

-struct ecopyparam {
-	int sttime;
-	int curtime;
-	int edtime;
-	int curstep;
-	int oldstep;
-};
-typedef struct ecopyparam ecopyparam_t;
-static ecopyparam_t ecp;
-
 // SACTEFAM.KLD の読み込み
-int smask_init(char *path) {
+bool smask_init(char *path) {
 	if (am.mmap)
-		return OK;  // already loaded
+		return true;  // already loaded

 	mmap_t *m = map_file(path);
 	if (!m)
-		return NG;
+		return false;
 	am.mmap = m;
 	am.datanum = LittleEndian_getDW(m->addr, 0);
 	am.no = malloc(sizeof(int) * am.datanum);
@@ -80,11 +65,11 @@ int smask_init(char *path) {
 		am.offset[i] = LittleEndian_getDW(m->addr, 16 + i * 16 + 8);
 	}
 	
-	return OK;
+	return true;
 }

 // 指定番号の alphamask ファイルをよみだす
-static surface_t *smask_get(int no) {
+static cgdata *smask_get(int no) {
 	int i;
 	
 	for (i = 0; i < am.datanum; i++) {
@@ -93,71 +78,25 @@ static surface_t *smask_get(int no) {

 	if (i == am.datanum) return NULL;
 	
-	return sf_getcg(am.mmap->addr + am.offset[i], 0 /*FIXME*/);
-}
-
-// ベースになるマスクの alpha 値を拡大して取り出す
-static surface_t *smask_mul(surface_t *sf, int val) {
-	surface_t *out = sf_create_alpha(sf->width, sf->height);
-	uint8_t *src = sf->alpha;
-	uint8_t *dst = out->alpha;
-	int pix = sf->width * sf->height;
-
-	while(pix--) {
-		int i = (*src - val) * 16;
-		if (i < 0)        *dst = 255; // 指定値よりも大きいのはコピー
-		else if (i > 255) *dst = 0;   // 指定値よりも小さいのは無視
-		else              *dst = 255-i; // それ以外は値を16倍
-		src++; dst++;
-	}
-	
-	return out;
+	return pms256_extract(am.mmap->addr + am.offset[i]);
 }

 /**
 * マスクつき画面更新
 */
-int sp_eupdate_amap(int index, int time, int cancel) {
-	surface_t *mask, *mask2;
-	surface_t *sfsrc, *sfdst;
-	int key;
-	
-	mask = smask_get(index);
+void sp_eupdate_amap(int index, int time, int cancel) {
+	cgdata *mask = smask_get(index);
 	if (mask == NULL) {
-		sp_update_all(TRUE);
-		return OK;
+		sp_update_all(true);
+		return;
 	}
-	
-	// 現在の sf0 をセーブ
-	sfsrc = sf_dup(sf0);
-	sp_update_all(FALSE);
-	sfdst = sf_dup(sf0);
-	sf_copyall(sf0, sfsrc);
-	
-	ecp.sttime = ecp.curtime = sdl_getTicks();
-	ecp.edtime = ecp.curtime + time*10;
-	ecp.oldstep = 0;
-	
-	while ((ecp.curtime = sdl_getTicks()) < ecp.edtime) {
-		int curstep = 255 * (ecp.curtime - ecp.sttime)/ (ecp.edtime - ecp.sttime);
-		// 元になるマスクのalpha値を16倍して欲しいところだけ取り出す
-		mask2 = smask_mul(mask, curstep);
-		
-		gre_BlendUseAMap(sf0, 0, 0, sfsrc, 0, 0, sfdst, 0, 0, sfsrc->width, sfsrc->height, mask2, 0, 0, 255);
-		ags_updateFull();
-		
-		key = sys_keywait(10, cancel ? KEYWAIT_CANCELABLE : KEYWAIT_NONCANCELABLE);
-		if (cancel && key) break;
-		
-		// 一時マスクを削除
-		sf_free(mask2);
-	}
-	
-	sf_copyall(sf0, sfdst);
+	SDL_Surface *mask_sf = SDL_CreateRGBSurfaceFrom(mask->pic, mask->width, mask->height, 8, mask->width, 0, 0, 0, 0);
+	sp_update_all(false);  // old = gfx_texture, new = main_surface
+	struct effect *eff = effect_sactamask_init(mask_sf);
+	ags_runEffect(time * 10, cancel, (ags_EffectStepFunc)effect_step, eff);
+	effect_finish(eff);
 	ags_updateFull();
-	sf_free(sfsrc);
-	sf_free(sfdst);
-	
-	sf_free(mask);
-	return OK;
+
+	SDL_FreeSurface(mask_sf);
+	cgdata_free(mask);
 }
@@ -24,6 +24,7 @@
 #ifndef __SACTAMASK_H__
 #define __SACTAMASK_H__

-extern int smask_init(const char *path);
+bool smask_init(const char *path);
+void sp_eupdate_amap(int type, int time, int key);

 #endif
@@ -1,342 +0,0 @@
-/*
- * sactcg.c: CG作成
- *
- * Copyright (C) 1997-1998 Masaki Chikama (Wren) <chikama@kasumi.ipl.mech.nagoya-u.ac.jp>
- *               1998-                           <masaki-c@is.aist-nara.ac.jp>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
-*/
-/* $Id: sactcg.c,v 1.7 2004/10/31 04:18:02 chikama Exp $ */
-
-#include "config.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "portab.h"
-#include "nact.h"
-#include "system.h"
-#include "ags.h"
-#include "sact.h"
-#include "sactcg.h"
-#include "surface.h"
-#include "ngraph.h"
-
-#include "sactcg_stretch.c"
-#include "sactcg_blend.c"
-
-#define spcg_assert_no(no) \
-  if ((no) > (CGMAX -1)) { \
-    WARNING("no is too large (should be %d < %d)", (no), CGMAX); \
-    return NG; \
-  } \
-
-static cginfo_t *scg_new(enum cgtype type, int no, surface_t *sf) {
-	cginfo_t *info = calloc(1, sizeof(cginfo_t));
-	info->type = type;
-	info->no = no;
-	info->sf = sf;
-	info->refcnt = 1;
-
-	scg_free(no);
-	sact.cg[no] = info;
-
-	return info;
-}
-
-/*
-  cgの読み込み
-
-    指定の番号のCGをリンクファイルから読み込んだり、
-    CG_xxxで作成したCGを参照する
-    
-  @param no: 読み込むCG番号
-*/
-static cginfo_t *scg_get(int no) {
-	if (no >= (CGMAX -1)) {
-		WARNING("no is too large (should be %d < %d)", (no), CGMAX);
-		return NULL;
-	}
-	
-	if (sact.cg[no] != NULL)
-		return sact.cg[no];
-
-	surface_t *sf = sf_loadcg_no(no - 1);
-	if (!sf) {
-		WARNING("load fail (%d)", no -1);
-		return NULL;
-	}
-	return scg_new(CG_LINKED, no, sf);
-}
-
-cginfo_t *scg_addref(int no) {
-	cginfo_t *info = scg_get(no);
-	if (info)
-		info->refcnt++;
-	return info;
-}
-
-void scg_deref(cginfo_t *cg) {
-	if (--cg->refcnt > 0)
-		return;
-
-	if (cg->sf)
-		sf_free(cg->sf);
-	free(cg);
-}
-
-//  指定の大きさ、色の矩形の CG を作成
-int scg_create(int wNumCG, int wWidth, int wHeight, int wR, int wG, int wB, int wBlendRate) {
-	spcg_assert_no(wNumCG);
-
-	surface_t *sf = sf_create_surface(wWidth, wHeight, sf0->depth);
-	gr_fill(sf, 0, 0, wWidth, wHeight, wR, wG, wB);
-	gr_fill_alpha_map(sf, 0, 0, wWidth, wHeight, wBlendRate);
-	scg_new(CG_SET, wNumCG, sf);
-	return OK;
-}
-
-// 指定のCGを反転させたCGを作成
-int scg_create_reverse(int wNumCG, int wNumSrcCG, int wReverseX, int wReverseY) {
-	spcg_assert_no(wNumCG);
-	spcg_assert_no(wNumSrcCG);
-	
-	cginfo_t *src = scg_get(wNumSrcCG);
-	if (!src)
-		return NG;
-
-	surface_t *sf = stretch(src->sf, src->sf->width, src->sf->height, (wReverseX << 1) | wReverseY);
-	scg_new(CG_REVERSE, wNumCG, sf);
-	return OK;
-}
-
-// 指定のCGを拡大/縮小したCGを作成
-int scg_create_stretch(int wNumCG, int wWidth, int wHeight, int wNumSrcCG) {
-	spcg_assert_no(wNumCG);
-	spcg_assert_no(wNumSrcCG);
-	
-	cginfo_t *src = scg_get(wNumSrcCG);
-	if (!src)
-		return NG;
-	
-	surface_t *sf = stretch(src->sf, wWidth, wHeight, 0);
-	scg_new(CG_STRETCH, wNumCG, sf);
-	return OK;
-}
-
-// ベースCGの上にブレンドCGを重ねた CG を作成
-int scg_create_blend(int wNumDstCG, int wNumBaseCG, int wX, int wY, int wNumBlendCG, int wAlphaMapMode) {
-	spcg_assert_no(wNumDstCG);
-	spcg_assert_no(wNumBaseCG);
-	spcg_assert_no(wNumBlendCG);
-
-	cginfo_t *basecg  = scg_get(wNumBaseCG);
-	cginfo_t *blendcg = scg_get(wNumBlendCG);
-	if (!basecg || !blendcg) return NG;
-
-	surface_t *sf = blend(basecg->sf, wX, wY, blendcg->sf, wAlphaMapMode);
-	scg_new(CG_SET, wNumDstCG, sf);
-	return OK;
-}
-
-// 指定の文字列のCGを作成
-int scg_create_text(int wNumCG, int wSize, int wR, int wG, int wB, int wText) {
-	spcg_assert_no(wNumCG);
-	
-	// 勝手に出ていいのかな？
-	if (svar_length(wText) == 0) return OK;
-
-	ags_setFont(FONT_GOTHIC, wSize);
-	agsurface_t *glyph = ags_drawStringToSurface(svar_get(wText));
-
-	surface_t *sf = sf_create_surface(glyph->width, wSize, nact->ags.dib->depth);
-	gr_fill(sf, 0, 0, glyph->width, wSize, wR, wG, wB);
-	gr_draw_amap(sf, 0, 0, glyph->pixel, glyph->width, wSize, glyph->bytes_per_line);
-
-	scg_new(CG_SET, wNumCG, sf);
-	return OK;
-}
-
-// 数字文字列のCGを作成
-int scg_create_textnum(int wNumCG, int wSize, int wR, int wG, int wB, int wFigs, int wZeroPadding, int wValue) {
-	spcg_assert_no(wNumCG);
-
-	char s[256], ss[256];
-	if (wZeroPadding) {
-		char *sss = "%%0%dd";
-		sprintf(ss, sss, wFigs);
-	} else {
-		char *sss = "%%%dd";
-		sprintf(ss, sss, wFigs);
-	}
-	sprintf(s, ss, wValue);
-
-	ags_setFont(FONT_GOTHIC, wSize);
-	agsurface_t *glyph = ags_drawStringToSurface(s);
-
-	surface_t *sf = sf_create_surface(glyph->width, wSize, nact->ags.dib->depth);
-	gr_fill(sf, 0, 0, glyph->width, wSize, wR, wG, wB);
-	gr_draw_amap(sf, 0, 0, glyph->pixel, glyph->width, wSize, glyph->bytes_per_line);
-
-	scg_new(CG_SET, wNumCG, sf);
-	return OK;
-}
-
-// CGを複製
-int scg_copy(int wNumDstCG, int wNumSrcCG) {
-	spcg_assert_no(wNumDstCG);
-	spcg_assert_no(wNumSrcCG);
-
-	cginfo_t *src = scg_get(wNumSrcCG);
-	if (!src)
-		return NG;
-
-	scg_new(CG_SET, wNumDstCG, sf_dup(src->sf));
-	return OK;
-}
-
-// CGの一部を切りぬいたCGを作成
-int scg_cut(int wNumDstCG, int wNumSrcCG, int wX, int wY, int wWidth, int wHeight) {
-	spcg_assert_no(wNumDstCG);
-	spcg_assert_no(wNumSrcCG);
-
-	cginfo_t *src = scg_get(wNumSrcCG);
-	if (!src)
-		return NG;
-
-	surface_t *sf = src->sf->alpha
-		? sf_create_surface(wWidth, wHeight, src->sf->depth)
-		: sf_create_pixel(wWidth, wHeight, src->sf->depth);
-
-	if (src->sf->pixel)
-		gr_copy(sf, 0, 0, src->sf, wX, wY, wWidth, wHeight);
-	if (src->sf->alpha)
-		gr_copy_alpha_map(sf, 0, 0, src->sf, wX, wY, wWidth, wHeight);
-
-	scg_new(CG_SET, wNumDstCG, sf);
-	return OK;
-}
-
-// 元のCGの一部を切りぬいたCGを作成
-int scg_partcopy(int wNumDstCG, int wNumSrcCG, int wX, int wY, int wWidth, int wHeight) {
-	spcg_assert_no(wNumDstCG);
-	spcg_assert_no(wNumSrcCG);
-
-	cginfo_t *src = scg_get(wNumSrcCG);
-	if (!src)
-		return NG;
-
-	surface_t *sf;
-	if (src->sf->alpha) {
-		sf = sf_create_surface(src->sf->width, src->sf->height, src->sf->depth);
-		gr_fill_alpha_map(sf, 0, 0, src->sf->width, src->sf->height, 255);
-	} else {
-		sf = sf_create_pixel(src->sf->width, src->sf->height, src->sf->depth);
-	}
-	
-	if (src->sf->pixel)
-		gr_copy(sf, wX, wY, src->sf, wX, wY, wWidth, wHeight);
-	if (src->sf->alpha)
-		gr_copy_alpha_map(sf, wX, wY, src->sf, wX, wY, wWidth, wHeight);
-
-	scg_new(CG_SET, wNumDstCG, sf);
-	return OK;
-}
-
-// 全てのCGの開放
-int scg_freeall() {
-	int i;
-	
-	for (i = 1; i < CGMAX; i++) {
-		scg_free(i);
-	}
-	return OK;
-}
-
-/**
- * 指定の番号の CG をオブジェクトリストから消し、オブジェクトがどこからも参照
- * されていない(参照数が0の)場合のみ、オブジェクトを削除
- */
-int scg_free(int no) {
-	spcg_assert_no(no);
-	
-	cginfo_t *cg = sact.cg[no];
-	if (!cg) return NG;
-	
-	scg_deref(cg);
-	sact.cg[no] = NULL;
-	
-	return OK;
-}
-
-// CGの種類を取得
-int scg_querytype(int wNumCG, int *ret) {
-	if (wNumCG >= (CGMAX -1)) goto errexit;
-	if (sact.cg[wNumCG] == NULL) goto errexit;
-
-	*ret = sact.cg[wNumCG]->type;
-	
-	return OK;
-
- errexit:
-	*ret = CG_NOTUSED;
-	return NG;
-}
-
-// CGの大きさを取得
-int scg_querysize(int wNumCG, int *w, int *h) {
-	if (wNumCG >= (CGMAX -1)) goto errexit;
-	if (sact.cg[wNumCG] == NULL) goto errexit;
-	if (sact.cg[wNumCG]->sf == NULL) goto errexit;
-
-	*w = sact.cg[wNumCG]->sf->width;
-	*h = sact.cg[wNumCG]->sf->height;
-	
-	return OK;
-
- errexit:
-	*w = *h = 0;
-	return NG;
-}
-
-// CGのBPPを取得
-int scg_querybpp(int wNumCG, int *ret) {
-	if (wNumCG >= (CGMAX -1)) goto errexit;
-	if (sact.cg[wNumCG] == NULL) goto errexit;
-	if (sact.cg[wNumCG]->sf == NULL) goto errexit;
-	
-	*ret = sact.cg[wNumCG]->sf->depth;
-
-	return OK;
-
- errexit:
-	*ret = 0;
-	return NG;
-}
-
-// CGの alphamap が存在するかを取得
-int scg_existalphamap(int wNumCG, int *ret) {
-	if (wNumCG >= (CGMAX -1)) goto errexit;
-	if (sact.cg[wNumCG] == NULL) goto errexit;
-	if (sact.cg[wNumCG]->sf == NULL) goto errexit;
-	
-	*ret = sact.cg[wNumCG]->sf->alpha ? 1 : 0;
-	
- errexit:
-	*ret = 0;
-	return NG;
-}
@@ -1,49 +0,0 @@
-/*
- * sactcg.h: CG作成
- *
- * Copyright (C) 1997-1998 Masaki Chikama (Wren) <chikama@kasumi.ipl.mech.nagoya-u.ac.jp>
- *               1998-                           <masaki-c@is.aist-nara.ac.jp>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
-*/
-/* $Id: sactcg.h,v 1.2 2003/11/16 15:29:52 chikama Exp $ */
-
-#ifndef __SACTCG_H__
-#define __SACTCG_H__
-
-#include "portab.h"
-#include "sact.h"
-
-extern cginfo_t *scg_addref(int no);
-extern void scg_deref(cginfo_t *cg);
-extern int scg_create(int wNumCG, int wWidth, int wHeight, int wR, int wG, int wB, int wBlendRate);
-extern int scg_create_reverse(int NumCG, int wNumSrcCG, int wReverseX, int wReverseY);
-extern int scg_create_stretch(int wNumCG, int wWidth, int wHeight, int wNumSrcCG);
-extern int scg_create_blend(int wNumDstCG, int wNumBaseCG, int wX, int wY, int wNumBlendCG, int wAlphaMapMode);
-extern int scg_create_text(int wNumCG, int wSize, int wR, int wG, int wB, int wText);
-extern int scg_create_textnum(int wNumCG, int wSize, int wR, int wG, int wB, int wFigs, int wZeroPadding, int wValue);
-extern int scg_copy(int wNumDstCG, int wNumSrcCG);
-extern int scg_cut(int wNumDstCG, int wNumSrcCG, int wX, int wY, int wWidth, int wHeight);
-extern int scg_partcopy(int wNumDstCG, int wNumSrcCG, int wX, int wY, int wWidth, int wHeight);
-extern int scg_freeall();
-extern int scg_free(int cg);
-extern int scg_querytype(int wNumCG, int *ret);
-extern int scg_querysize(int wNumCG, int *w, int *h);
-extern int scg_querybpp(int wNumCG, int *ret);
-extern int scg_existalphamap(int wNumCG, int *ret);
-extern int scg_linkcgfree(int no);
-
-#endif
@@ -1,31 +0,0 @@
-// 
-static surface_t *blend(surface_t *base, int x, int y, surface_t *blend, int mode) {
-	surface_t *dst = sf_create_surface(base->width, base->height, base->depth);
-	
-	gr_copy(dst, 0, 0, base, 0, 0, base->width, base->height);
-	
-	if (base->alpha) {
-		// ベースに alpha map がある場合はそれをコピー
-		gr_copy_alpha_map(dst, 0, 0, base, 0, 0, base->width, base->height);
-	} else {
-		// 無い場合は全て 255 の map を作成
-		gr_fill_alpha_map(dst, 0, 0, base->width, base->height, 255);
-	}
-	
-	if (blend->alpha) {
-		// 重ね合わせ先の alpha map があるときはそれを使う
-		gre_BlendUseAMap(dst, x, y, base, x, y, blend, 0, 0, blend->width, blend->height, blend, 0, 0, 255);
-	} else {
-		// 無いときは dst の alpha map を使う
-		gre_BlendUseAMap(dst, x, y, base, x, y, blend, 0, 0, blend->width, blend->height, dst, x, y, 255);
-	}
-	
-	// alpha 作成モードが dst + blend の時は飽和加算
-	if (mode == 1) {
-		gr_saturadd_alpha_map(dst, x, y, blend, 0, 0, blend->width, blend->height);
-	}
-	
-	return dst;
-}
-
-
@@ -1,114 +0,0 @@
-// 拡大縮小
-static surface_t *stretch(surface_t *src, int dw, int dh, int mirror) {
-	surface_t *dst = calloc(1, sizeof(surface_t));
-	float    a1, a2, xd, yd;
-	int      sw, sh;
-	int      *row, *col;
-	int      x, y;
-	uint8_t  *sdata, *ddata;
-	
-	dst->width = dw;
-	dst->height = dh;
-	dst->depth = src->depth;
-	dst->bytes_per_line = dw * src->bytes_per_pixel;
-	dst->bytes_per_pixel = src->bytes_per_pixel;
-	
-	if (src->pixel) {
-		dst->pixel = malloc(dh * dst->bytes_per_line);
-	}
-	if (src->alpha) {
-		dst->alpha = malloc(dw * dh);
-	}
-	
-	
-	sdata = GETOFFSET_PIXEL(src, 0, 0);
-	ddata = GETOFFSET_PIXEL(dst, 0, 0);
-	sw = src->width;
-	sh = src->height;
-	
-	a1  = (float)sw / (float)dw;
-	a2  = (float)sh / (float)dh;
-	row = malloc(sizeof(int) * dw);
-	// 1おおきくして初期化しないと col[dw-1]とcol[dw]が同じになる
-	// 可能性がある。
-	col = calloc(dh +1, sizeof(int));
-	
-	if (mirror & 1) {
-		/* 上下反転 added by  tajiri@wizard */
-		for (yd = sh - a2, y = 0; y < dh; y++) {
-			col[y] = yd; yd -= a2;
-		}
-	} else {
-		for (yd = 0.0, y = 0; y < dh; y++) {
-			col[y] = yd; yd += a2;
-		}
-	}
-	if (mirror & 2) {
-		/* 左右反転 added by  tajiri@wizard */
-		for (xd = sw - a1, x = 0; x < dw; x++) {
-			row[x] = xd; xd -= a1;
-		}
-	} else {
-		for (xd = 0.0, x = 0; x < dw; x++) {
-			row[x] = xd; xd += a1;
-		}
-	}
-	
-#define SCALEDCOPYAREA(type) {                                          \
-	int x, y;                                                       \
-	type *sl, *dl;                                                  \
-	uint8_t *_sl, *_dl;                                             \
-	for (y = 0; y < dh; y++) {                                      \
-		sl = (type *)(sdata + *(y + col) * src->bytes_per_line);\
-		dl = (type *)(ddata +   y        * dst->bytes_per_line);\
-		for (x = 0; x < dw; x++) {                              \
-			*(dl + x) = *(sl + *(row + x));                 \
-		}                                                       \
-		_dl = (uint8_t *)dl;                                    \
-		while (y < dh - 1 && *(col + y) == *(col + y + 1)) {	\
-			_sl = _dl;                                      \
-			_dl += dst->bytes_per_line;                     \
-			memcpy(_dl, _sl, dw * sizeof(type));            \
-			y++;                                            \
-		}                                                       \
-	}}
-	
-	switch(dst->depth) {
-	case 8:	
-		SCALEDCOPYAREA(uint8_t); break;
-	case 16:
-		SCALEDCOPYAREA(uint16_t); break;
-	case 24:
-	case 32:
-		SCALEDCOPYAREA(uint32_t); break;
-	default:
-		break;
-	}
-	
-	if (src->alpha) {
-		int x, y;
-		uint8_t *sl, *dl;
-		uint8_t *_sl, *_dl;
-		sdata = GETOFFSET_ALPHA(src, 0, 0);
-		ddata = GETOFFSET_ALPHA(dst, 0, 0);
-		for (y = 0; y < dh; y++) {
-			sl = (uint8_t *)(sdata + *(y + col) * src->width);
-			dl = (uint8_t *)(ddata +   y        * dst->width);
-			for (x = 0; x < dw; x++) {
-				*(dl + x) = *(sl + *(row + x));
-			}
-			_dl = (uint8_t *)dl;
-			while (y < dh - 1 && *(col + y) == *(col + y + 1)) {
-				_sl = _dl;
-				_dl += dst->width;
-				memcpy(_dl, _sl, dw);
-				y++;
-			}
-		}
-	}
-	
-	free(row);
-	free(col);
-	
-	return dst;
-}
@@ -25,13 +25,12 @@
 #include "portab.h"

 // グラフ用チャート作成
-int schart_pos(int *pos, int pos1, int pos2, int val1, int val2, int val) {
+void schart_pos(vmvar_t *pos, int pos1, int pos2, int val1, int val2, int val) {
 	if (val1 == val2) {
 		*pos = 0;
 	} else {
 		*pos = (((pos2 - pos1) * (val - val1)) / (val2 - val1)) + pos1;
 	}
-	return OK;
 }

 /*
@@ -24,6 +24,8 @@
 #ifndef __SACTCHART_H__
 #define __SACTCHART_H__

-extern int schart_pos(int *pos, int pos1, int pos2, int val1, int val2, int val);
+#include "portab.h"
+
+void schart_pos(vmvar_t *pos, int pos1, int pos2, int val1, int val2, int val);

 #endif
@@ -31,23 +31,19 @@
  適当でいいとおもう
 */

-int scryp_encrypt_word(int *array, int num, int key) {
+void scryp_encrypt_word(vmvar_t *array, int num, int key) {
 	WARNING("NOT IMPLEMENTED");
-	return OK;
 }

-int scryp_decrypt_word(int *array, int num, int key) {
+void scryp_decrypt_word(int *array, int num, int key) {
 	WARNING("NOT IMPLEMENTED");
-	return OK;
 }

-int scryp_encrypt_str(int strno, int key) {
+void scryp_encrypt_str(int strno, int key) {
 	WARNING("NOT IMPLEMENTED");
-	return OK;
 }

-int scryp_decrypt_str(int strno, int key) {
+void scryp_decrypt_str(int strno, int key) {
 	WARNING("str = '%s'", svar_get(strno));
 	WARNING("NOT IMPLEMENTED");
-	return OK;
 }
@@ -24,9 +24,11 @@
 #ifndef __SACTCRYPT_H__
 #define __SACTCRYPT_H__

-extern int scryp_encrypt_word(int *array, int num, int key);
-extern int scryp_decrypt_word(int *array, int num, int key);
-extern int scryp_encrypt_str(int strno, int key);
-extern int scryp_decrypt_str(int strno, int key);
+#include "portab.h"
+
+void scryp_encrypt_word(vmvar_t *array, int num, int key);
+void scryp_decrypt_word(int *array, int num, int key);
+void scryp_encrypt_str(int strno, int key);
+void scryp_decrypt_str(int strno, int key);

 #endif
@@ -26,6 +26,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <SDL.h>

 #include "portab.h"
 #include "system.h"
@@ -35,13 +36,13 @@
 #include "nact.h"
 #include "sact.h"
 #include "sprite.h"
-#include "ngraph.h"
-#include "drawtext.h"
-#include "utfsjis.h"
+#include "gfx.h"
+#include "ags.h"
+#include "font.h"

 #define LOGMSG_LINES 6

-static const char *logmsg_utf8[LOGMSG_LINES] = {
+static char *logmsg[LOGMSG_LINES] = {
 	"\n",
 	"※バックログ操作方法※",
 	"[ESC]またはマウス右クリックでゲームに戻る",
@@ -56,12 +57,11 @@ static const char *logmsg_utf8[LOGMSG_LINES] = {
  PageUP/Downで１ページ送り
 */

-#define FONTSIZEINDEX 10
+#define INDEX_FONTSIZE 10
 #define FONTSIZE 20
-#define LOGLINENUM (sf0->height / FONTSIZE)
+#define LOGLINENUM (main_surface->h / FONTSIZE)
 static int curline;
-static surface_t *back;
-static surface_t *chr;
+static SDL_Surface *back;

 static void draw_log() {
 	int i, y = 0, len;
@@ -69,14 +69,24 @@ static void draw_log() {
 	char pinfo[256];
 	List *node;

-	// canvas clear
-	memset(chr->pixel, 0, chr->bytes_per_line * chr->height);
-	
+#ifdef __EMSCRIPTEN__
+	load_mincho_font();
+#endif
+
+	SDL_Surface *hline = SDL_CreateRGBSurfaceWithFormat(0, main_surface->w, 3, 32, SDL_PIXELFORMAT_RGB888);
+	SDL_FillRect(hline, NULL, SDL_MapRGB(hline->format, 255, 255, 255));
+	SDL_SetSurfaceBlendMode(hline, SDL_BLENDMODE_BLEND);
+	SDL_SetSurfaceAlphaMod(hline, 128);
+
+	SDL_SetSurfaceColorMod(back, 128, 128, 128);
+	SDL_BlitSurface(back, NULL, main_surface, NULL);
+	SDL_SetSurfaceColorMod(back, 255, 255, 255);
+
 	// ページ位置情報
 	len = snprintf(pinfo, sizeof(pinfo) -1, "%d/%d", curline, list_length(sact.log));
 	
-	dt_setfont(FONT_GOTHIC, FONTSIZEINDEX);
-	dt_drawtext(chr, sf0->width - FONTSIZEINDEX *len /2, 0, pinfo);
+	gfx_drawString(main_surface->w - INDEX_FONTSIZE * len / 2, 0, pinfo, 255,
+				   (FontSpec){ .size = INDEX_FONTSIZE });
 	
 	// 表示始め位置
 	node = list_nth(sact.log, list_length(sact.log) - curline);
@@ -85,88 +95,66 @@ static void draw_log() {
 		
 		char *str = (char *)(node->data);
 		if (0 == strcmp(str, "\n")) {
-			gr_fill(chr, 0, y + FONTSIZE/2, sf0->width, 3, 128, 0, 0);
+			SDL_BlitSurface(hline, NULL, main_surface, &(SDL_Rect){0, y + FONTSIZE/2, main_surface->w, 3});
 		} else {
-			if (cur < 6) {
-				dt_setfont(FONT_MINCHO, FONTSIZE);
-			} else {
-				dt_setfont(FONT_GOTHIC, FONTSIZE);
-			}
-			dt_drawtext(chr, 0, y, str);
+			FontSpec font_spec = { .type = cur < 6 ? FONT_MINCHO : FONT_GOTHIC, .size = FONTSIZE };
+			gfx_drawString(0, y, str, 255, font_spec);
 		}
 		y += FONTSIZE;
 		cur--;
 		node = list_next(node);
 	}
-	
-	gr_copy_bright(sf0, 0, 0, back, 0, 0, sf0->width, sf0->height, 128);
-	gr_expandcolor_blend(sf0, 0, 0, chr, 0, 0, sf0->width, sf0->height,
-			     255, 255, 255);
+
 	ags_updateFull();
 }



-int sblog_start(void) {
+bool sblog_start(void) {
 	if (sact.version < 120)
-		return NG;
+		return false;

-	static char *logmsg[LOGMSG_LINES];
-	if (!logmsg[0]) {
-		for (int i = 0; i < LOGMSG_LINES; i++)
-			logmsg[i] = fromUTF8(logmsg_utf8[i]);
-	}
-
-	// 説明文章を追加
+	// Append instruction text
 	for (int i = 0; i < LOGMSG_LINES; i++)
 		sact.log = list_append(sact.log, logmsg[i]);
 	
-	back = sf_dup(sf0);
-	chr  = sf_create_surface(sf0->width, sf0->height, 8);
+	back = SDL_ConvertSurface(main_surface, main_surface->format, 0);
 	curline = 6;
 	draw_log();
-	return OK;
+	return true;
 }

-int sblog_end(void) {
+void sblog_end(void) {
 	List *node;
 	int i;
 	
-	sf_copyall(sf0, back);
+	SDL_BlitSurface(back, NULL, main_surface, NULL);
 	ags_updateFull();
 	
-	sf_free(back);
-	sf_free(chr);
-	
-	// 説明文章を削除
+	SDL_FreeSurface(back);
+
+	// Remove instruction text
 	for (i = 0; i < LOGMSG_LINES; i++) {
-		node = list_last(sact.log);
-		sact.log = list_remove(sact.log, node->data);
+		sact.log = list_remove(sact.log, logmsg[i]);
 	}
-	
-	return OK;
 }

-int sblog_pageup(void) {
+void sblog_pageup(void) {
 	curline = min(list_length(sact.log), curline + (LOGLINENUM -1));
 	draw_log();
-	return OK;
 }

-int sblog_pagedown(void) {
+void sblog_pagedown(void) {
 	curline = max(1, curline - (LOGLINENUM -1));
 	draw_log();
-	return OK;
 }

-int sblog_pagepre(void) {
+void sblog_pagepre(void) {
 	curline = max(1, curline - 1);
 	draw_log();
-	return OK;
 }

-int sblog_pagenext(void) {
+void sblog_pagenext(void) {
 	curline = min(list_length(sact.log), curline + 1);
 	draw_log();
-	return OK;
 }
--- a/Show More
+++ b/Show More