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This removes the buffered SDL_RWops functionality that was just added in
51b0c3239265ddee2d1bf445f873299cc8193ab9. We just call PHYSFS_setBuffer
instead.
Using the PhysicsFS buffer is a little bit slower, likely because it
operates at a lower level, but it is fast enough for our purposes.
Uncompressed music files loaded from ZIP files can start playing in
about 1-2 ms.
I've also landed a fix for the problem in SDL_mixer, which works even
better in any case: https://github.com/libsdl-org/SDL_mixer/pull/671
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All ResourceManager functions that load resources now return respective
ResourceRef values, which helps to make sure resources are properly
cleaned up.
The Sound class was cleaned up and now also allows SoundEffect resources
to be unloaded.
The Animation class now keeps its ImageSet loaded only as long as
necessary. Previously, SimpleAnimation and ParticleEmitter would keep
the ImageSet loaded indefinitely by never decreasing its reference
count.
Reduced duplicated animation loading code between SimpleAnimation and
ParticleEmitter.
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This is a workaround for a performance issue when SDL_mixer is using
stb_vorbis. Since stb_vorbis will request the file one byte at a time,
the overhead of using SDL_RWops to call PHYSFS_readBytes is too high.
Solved by introducing a buffered SDL_RWops wrapper with a fixed 2048
byte buffer. This is a more optimal solution than loading the entire OGG
file in memory. Now starting a new song takes less than 1ms, when the
OGG file isn't compressed (almost down to 0.2ms when SDL_mixer uses
libvorbisfile).
See https://github.com/libsdl-org/SDL_mixer/issues/670
Closes https://git.themanaworld.org/mana/mana/-/issues/93
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* Wrapped remaining PhysFS API calls and set PHYSFS_DEPRECATED to
suppress deprecation warnings for PHYSFS_getUserDir, since no
alternative is available for now.
* Removed support for decompressing .gz files, since it has been unused
for years and doesn't seem useful when updates are anyway served in an
archive.
* Use SDL_LoadFile and SDL_LoadFile_RW convenience functions (raises
minimum SDL version to 2.0.10).
* Removed ResourceManager::copyFile, since it was unused and will likely
stay unused.
* Removed ResourceManager::loadTextFile. Instead, split up the string in
BrowserBox::addRows without making additional copies.
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* Most direct PhysFS calls now contained within a single header file.
* File class that automatically closes.
* Files class allows iterating files with range-based for.
* Use std::optional to force error handling where applicable.
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