Add optional SDL3 support while keeping SDL2 as the default. SDL3 builds
must be selected explicitly with the SYSTEM3_SDL_VERSION CMake option.
Centralize most SDL2/SDL3 API differences behind compatibility interfaces.
Audio playback uses a dedicated SDL3 backend based on SDL3 audio streams,
implemented separately in mako_sdl3.cpp.
Android and Nintendo Switch remain on SDL2 for now.
init_console() unconditionally reopened stdout, stderr and stdin on a
newly allocated console. Since ad33e72 this also happens for
`-texthook print`, which made the scenario tests fail because ctest
could no longer read the output of the process.
Dri::load_mda() referenced 26 of the built-in MDAs without the ".MDA"
suffix, so open_resource() never found them.
Also add the missing cases for Rance 4 and Gakuen KING.
Gakuen KING's original implementation returns 1 for num=1; it returns 0
only when num is 0.
The line dates back to the initial upstream import and had never been
changed. nact_sys1.cpp and nact_sys2.cpp still have the same expression
but they are left alone.
This is an enhancement over the original. The original draws each map
redraw at its new position at once, then waits for the movement
interval. Compose the view into an offscreen screen and slide it into
place over that same interval, interpolating the sprite alongside it,
for smooth scrolling. Redraws that move more than one cell still snap.
The original leaves the selection feedback to the mouse pointer,
which may be missing or impossible to move in system3-sdl2. Draw the
mouse cursor image extracted from GAKUEN.COM on the grid while the
keyboard drives the selection.
- MP3/OGG files are now decoded with dr_mp3 and stb_vorbis via the new
MakoMusic backend.
- Merge src/win/mako.cpp into src/generic/mako.cpp: Windows now uses the
same SDL audio path.
- A single SDL2 audio device mixes FM, BGM and PCM in its callback with
SDL_MixAudioFormat.
- PCM plays through SDL_AudioStream.
- dr_mp3 and stb_vorbis are vendored under deps/ and included from
mako_music.cpp. Warnings for that translation unit are silenced.
If CD audio is not available (no playlist) but CD playback is specified,
MAKO::play() falls back to FM/MIDI.
Also, on Windows, gray out the "CD Audio" menu item if CD audio is not
available.
Rapid register writes could cause audio glitches [1].
This introduces a queue to process one write per audio generation cycle.
This approach is the same as the one used in ymfm's vgmrender.cpp.
[1] https://github.com/aaronsgiles/ymfm/issues/1
This adds minimal command support to enable Gakuen King's music mode:
- P: Set text color
- I: Allow user to select a grid item using mouse/keyboard input
- Y25: Switch text window
- Y118: Set text X coordinate
- Y119: Set text Y coordinate
The meanings of these commands were investigated from the implementation
of Gakuen King's system3.5 port.
kichikuou