Initial commit

audio/audio.jai

@@ -0,0 +1,86 @@
+Sound_Handle :: #type, distinct u32;
+audio_system : *Audio_System;
+
+Sound :: struct {
+    fmod_sound: *FMOD_SOUND;
+}
+
+Audio_Event :: struct {
+    instance : *FMOD_STUDIO_EVENTINSTANCE;
+};
+
+Delayed_Audio_Event :: struct {
+    event: Audio_Event;
+    time_left: float;
+}
+
+Audio_System :: struct {
+    fmod: *FMOD_SYSTEM;
+    studio: *FMOD_STUDIO_SYSTEM;
+    sounds: PArray(Sound, Sound_Handle);
+
+    delayed_events: [..] Delayed_Audio_Event;
+}
+
+init_audio_system :: () {
+    audio_system = New(Audio_System);
+    assert(FMOD_System_Create(*audio_system.fmod, FMOD_VERSION) == .FMOD_OK);
+    assert(FMOD_System_Init(audio_system.fmod, 32, 0, null) == .FMOD_OK);
+
+    assert(FMOD_Studio_System_Create(*audio_system.studio, FMOD_VERSION) == .FMOD_OK);
+    assert(FMOD_Studio_System_Initialize(audio_system.studio, 512, FMOD_STUDIO_INIT_LIVEUPDATE, FMOD_INIT_PROFILE_ENABLE, null) == .FMOD_OK);
+}
+
+instance : *FMOD_STUDIO_EVENTINSTANCE;
+
+load_fmod_bank :: (path: string) {
+    bank : *FMOD_STUDIO_BANK;
+    result := FMOD_Studio_System_LoadBankFile(audio_system.studio, to_temp_c_string(path), FMOD_STUDIO_LOAD_BANK_NORMAL, *bank);
+    assert(result == .FMOD_OK);
+    loading_state : FMOD_STUDIO_LOADING_STATE;
+    res := FMOD_Studio_Bank_GetLoadingState(bank, *loading_state);
+}
+
+create_audio_event :: (path: string) -> Audio_Event {
+    event : *FMOD_STUDIO_EVENTDESCRIPTION;
+    result := FMOD_Studio_System_GetEvent(audio_system.studio, to_temp_c_string(path), *event);
+    assert(result == .FMOD_OK);
+
+    evt : Audio_Event;
+    assert(FMOD_Studio_EventDescription_CreateInstance(event, *evt.instance) == .FMOD_OK);
+    return evt;
+}
+
+play_audio_event :: (evt: Audio_Event, delay: float = -1.0) {
+    if delay > 0.0 {
+        array_add(*audio_system.delayed_events, .{evt, delay});
+    } else {
+        assert(FMOD_Studio_EventInstance_Start(evt.instance) == .FMOD_OK);
+    }
+}
+
+create_sound :: (path: string) -> Sound_Handle {
+    sound: Sound;
+    assert(FMOD_System_CreateSound(audio_system.fmod, to_temp_c_string(path), FMOD_DEFAULT, null, *sound.fmod_sound) == .FMOD_OK);
+
+    return parray_add(*audio_system.sounds, sound);
+}
+
+play_sound :: (handle: Sound_Handle) {
+    sound := parray_get(audio_system.sounds, handle);
+    FMOD_System_PlaySound(audio_system.fmod, sound.fmod_sound, null, 0, null);
+}
+
+update_audio :: (dt: float) {
+    for * audio_system.delayed_events {
+        if it.time_left <= 0.0 {
+            play_audio_event(it.event);
+            remove it;
+        } else {
+            it.time_left -= dt;
+        }
+    }
+    FMOD_Studio_System_Update(audio_system.studio);
+}
+
+#import "fmod";