Implement "VolumeValancer" mixer channels from the .ini file. Mixers are
now recursive, with the master and voice channels being parent nodes
(this seems to be hardcoded in system 4, or at least I haven't found
where the hierarchy is specified).
Also implement .wai file support (needed for mixer channel info on sound
files).
Replace SDL_mixer with an audio implementation using libsndfile,
sts_mixer (a single-file header library) and SDL's basic audio
interface.
This allows for much more flexibility in controlling audio playback.
Fading is now properly implemented, as well as various other functions
from the SACT2/KiwiSoundEngine interface.
sts_mixer can support recursive mixing, so it will be possible to
implement the "VolumeValancer" mixer channels specified in
System40.ini in the future (once I figure out how the mapping of audio
files to mixer channels is supposed to work).
* Cells loaded from walk-data are half-transparent.
* The player symbol is half-transparent when showing different floors.
* Clear the texture before drawing a small map so that no garbage is
left when the drawing is clipped.
In OpenGL ES 3, glTexImage2D cannot handle GL_BGRA format. SDL_ttf
returns pixels in BGRA format (because it's the format used in
FreeType2), so it needs to be converted to RGBA before passing to
gfx_init_texture_with_pixels.
Major differences from DrawDungeon.hll are:
- DGN, DTX, TES are loaded from individual files, not from a DLF archive
- 2D map functions are not used
- (unimplemented) Spinning motion of event markers
- (unimplemented) Additional 3D object types (polygon models and roofs)
It was introduced to flip texture image rendered by DrawDungeon when
presenting on the screen. In GALZOO this approach does not work because
dungeon texture is also used as the source image of gfx functions.
After this, DrawDungeon directly generates vertically flipped image, by
tweaking the projection matrix.
It should return the maximum Z value among all sprites, not among
visible sprites.
This fixes a bug in Rance VI where some UI elements are incorrectly
Z-ordered.
Before this, all objects that share a texture were drawn at once.
Objects were not depth-sorted, so if a transparent object was drawn
first, objects behind it were not drawn.
After this, dungeon is drawn for each cell, sorted by distance from
the camera position. To reduce the number of cells to be drawn, PVS
(Potentially Visible Set) stored in dgn files is used.
This fixes Rance VI which passes SACT2.SP_SaveCG and
SACT2.SP_SetCGFromFile absolute paths like
`system.GetSaveFolderName() + "\\" + "ScreenA.qnt"`.
Also, now savedir_path() uses unix_path() rather than sjis2utf().
Implement a system for allocating anonymous channels so that libraries
can play sounds without having to manage channels.
A library that uses audio_play_sound must ensure that audio_update is
called periodically to garbage collect finished channels.
Create a separate interface for managing the scene. The sact_sprite
interface is implemented on top of this, as is GoatGUIEngine (which is
now independent of sact_sprite).
This will allow more specialized graphics interfaces to be implemented
without adding to the complexity of the sact_sprite interace. (For
example, GoatGUIEngine needs to store multiple textures per sprite for
button states; this is not supported by sact_sprite.)
Implement a new interface for managing archives. This is mainly to
support loading afa archives alongside ald archives.
Also included here is some code for creating an index for afa CG
archives (the numbers used to reference CGs in afa archives correspond
to the file name, not the position in the archive).
Used in Shaman's Sanctuary. Mostly identical to StoatSpriteEngine, but
with a few additions and some removed functions (notably, the
MultiSprite functions were removed).
Nunuhara Cabbage