ref: c170810ad4952e3add1b1453db7436c5a8c16cce
dir: /home/audio.asm/
; Audio interfaces. MapSetup_Sound_Off:: push hl push de push bc push af ldh a, [hROMBank] push af ld a, BANK(_MapSetup_Sound_Off) ldh [hROMBank], a ld [MBC3RomBank], a call _MapSetup_Sound_Off pop af ldh [hROMBank], a ld [MBC3RomBank], a pop af pop bc pop de pop hl ret UpdateSound:: push hl push de push bc push af ldh a, [hROMBank] push af ld a, BANK(_UpdateSound) ldh [hROMBank], a ld [MBC3RomBank], a call _UpdateSound pop af ldh [hROMBank], a ld [MBC3RomBank], a pop af pop bc pop de pop hl ret _LoadMusicByte:: ; wCurMusicByte = [a:de] ldh [hROMBank], a ld [MBC3RomBank], a ld a, [de] ld [wCurMusicByte], a ld a, BANK(LoadMusicByte) ldh [hROMBank], a ld [MBC3RomBank], a ret PlayMusic:: ; Play music de. push hl push de push bc push af ldh a, [hROMBank] push af ld a, BANK(_PlayMusic) ; aka BANK(_MapSetup_Sound_Off) ldh [hROMBank], a ld [MBC3RomBank], a ld a, e and a jr z, .nomusic call _PlayMusic jr .end .nomusic call _MapSetup_Sound_Off .end pop af ldh [hROMBank], a ld [MBC3RomBank], a pop af pop bc pop de pop hl ret PlayMusic2:: ; Stop playing music, then play music de. push hl push de push bc push af ldh a, [hROMBank] push af ld a, BANK(_PlayMusic) ldh [hROMBank], a ld [MBC3RomBank], a push de ld de, MUSIC_NONE call _PlayMusic call DelayFrame pop de call _PlayMusic pop af ldh [hROMBank], a ld [MBC3RomBank], a pop af pop bc pop de pop hl ret PlayCry:: ; Play cry de. push hl push de push bc push af ldh a, [hROMBank] push af ; Cries are stuck in one bank. ld a, BANK(PokemonCries) ldh [hROMBank], a ld [MBC3RomBank], a ld hl, PokemonCries rept 6 ; sizeof(mon_cry) add hl, de endr ld e, [hl] inc hl ld d, [hl] inc hl ld a, [hli] ld [wCryPitch], a ld a, [hli] ld [wCryPitch + 1], a ld a, [hli] ld [wCryLength], a ld a, [hl] ld [wCryLength + 1], a ld a, BANK(_PlayCry) ldh [hROMBank], a ld [MBC3RomBank], a call _PlayCry pop af ldh [hROMBank], a ld [MBC3RomBank], a pop af pop bc pop de pop hl ret PlaySFX:: ; Play sound effect de. ; Sound effects are ordered by priority (highest to lowest) push hl push de push bc push af ; Is something already playing? call CheckSFX jr nc, .play ; Does it have priority? ld a, [wCurSFX] cp e jr c, .done .play ldh a, [hROMBank] push af ld a, BANK(_PlaySFX) ldh [hROMBank], a ld [MBC3RomBank], a ld a, e ld [wCurSFX], a call _PlaySFX pop af ldh [hROMBank], a ld [MBC3RomBank], a .done pop af pop bc pop de pop hl ret WaitPlaySFX:: call WaitSFX call PlaySFX ret WaitSFX:: ; infinite loop until sfx is done playing push hl .wait ld hl, wChannel5Flags1 bit 0, [hl] jr nz, .wait ld hl, wChannel6Flags1 bit 0, [hl] jr nz, .wait ld hl, wChannel7Flags1 bit 0, [hl] jr nz, .wait ld hl, wChannel8Flags1 bit 0, [hl] jr nz, .wait pop hl ret IsSFXPlaying:: ; Return carry if no sound effect is playing. ; The inverse of CheckSFX. push hl ld hl, wChannel5Flags1 bit 0, [hl] jr nz, .playing ld hl, wChannel6Flags1 bit 0, [hl] jr nz, .playing ld hl, wChannel7Flags1 bit 0, [hl] jr nz, .playing ld hl, wChannel8Flags1 bit 0, [hl] jr nz, .playing pop hl scf ret .playing pop hl and a ret MaxVolume:: ld a, MAX_VOLUME ld [wVolume], a ret LowVolume:: ld a, $33 ; 40% ld [wVolume], a ret VolumeOff:: xor a ld [wVolume], a ret Unused_FadeOutMusic:: ld a, 4 ld [wMusicFade], a ret FadeInMusic:: ld a, 4 | (1 << MUSIC_FADE_IN_F) ld [wMusicFade], a ret SkipMusic:: ; Skip a frames of music. .loop and a ret z dec a call UpdateSound jr .loop FadeToMapMusic:: push hl push de push bc push af call GetMapMusic_MaybeSpecial ld a, [wMapMusic] cp e jr z, .done ld a, 8 ld [wMusicFade], a ld a, e ld [wMusicFadeID], a ld a, d ld [wMusicFadeID + 1], a ld a, e ld [wMapMusic], a .done pop af pop bc pop de pop hl ret PlayMapMusic:: push hl push de push bc push af call GetMapMusic_MaybeSpecial ld a, [wMapMusic] cp e jr z, .done push de ld de, MUSIC_NONE call PlayMusic call DelayFrame pop de ld a, e ld [wMapMusic], a call PlayMusic .done pop af pop bc pop de pop hl ret EnterMapMusic:: push hl push de push bc push af xor a ld [wDontPlayMapMusicOnReload], a ld de, MUSIC_BICYCLE ld a, [wPlayerState] cp PLAYER_BIKE jr z, .play call GetMapMusic_MaybeSpecial .play push de ld de, MUSIC_NONE call PlayMusic call DelayFrame pop de ld a, e ld [wMapMusic], a call PlayMusic pop af pop bc pop de pop hl ret TryRestartMapMusic:: ld a, [wDontPlayMapMusicOnReload] and a jr z, RestartMapMusic xor a ld [wMapMusic], a ld de, MUSIC_NONE call PlayMusic call DelayFrame xor a ld [wDontPlayMapMusicOnReload], a ret RestartMapMusic:: push hl push de push bc push af ld de, MUSIC_NONE call PlayMusic call DelayFrame ld a, [wMapMusic] ld e, a ld d, 0 call PlayMusic pop af pop bc pop de pop hl ret SpecialMapMusic:: ld a, [wPlayerState] cp PLAYER_SURF jr z, .surf cp PLAYER_SURF_PIKA jr z, .surf ld a, [wStatusFlags2] bit STATUSFLAGS2_BUG_CONTEST_TIMER_F, a jr nz, .contest .no and a ret .bike ld de, MUSIC_BICYCLE scf ret .surf ld de, MUSIC_SURF scf ret .contest ld a, [wMapGroup] cp GROUP_ROUTE_35_NATIONAL_PARK_GATE jr nz, .no ld a, [wMapNumber] cp MAP_ROUTE_35_NATIONAL_PARK_GATE jr z, .ranking cp MAP_ROUTE_36_NATIONAL_PARK_GATE jr nz, .no .ranking ld de, MUSIC_BUG_CATCHING_CONTEST_RANKING scf ret GetMapMusic_MaybeSpecial:: call SpecialMapMusic ret c call GetMapMusic ret Unreferenced_Function3d9f:: ; Places a BCD number at the ; upper center of the screen. ld a, 4 * TILE_WIDTH ld [wVirtualOAMSprite38YCoord], a ld [wVirtualOAMSprite39YCoord], a ld a, 10 * TILE_WIDTH ld [wVirtualOAMSprite38XCoord], a ld a, 11 * TILE_WIDTH ld [wVirtualOAMSprite39XCoord], a xor a ld [wVirtualOAMSprite38Attributes], a ld [wVirtualOAMSprite39Attributes], a ld a, [wc296] cp 100 jr nc, .max add 1 daa ld b, a swap a and $f add "0" ld [wVirtualOAMSprite38TileID], a ld a, b and $f add "0" ld [wVirtualOAMSprite39TileID], a ret .max ld a, "9" ld [wVirtualOAMSprite38TileID], a ld [wVirtualOAMSprite39TileID], a ret CheckSFX:: ; Return carry if any SFX channels are active. ld a, [wChannel5Flags1] bit 0, a jr nz, .playing ld a, [wChannel6Flags1] bit 0, a jr nz, .playing ld a, [wChannel7Flags1] bit 0, a jr nz, .playing ld a, [wChannel8Flags1] bit 0, a jr nz, .playing and a ret .playing scf ret TerminateExpBarSound:: xor a ld [wChannel5Flags1], a ld [wSoundInput], a ldh [rNR10], a ldh [rNR11], a ldh [rNR12], a ldh [rNR13], a ldh [rNR14], a ret ChannelsOff:: ; Quickly turn off music channels xor a ld [wChannel1Flags1], a ld [wChannel2Flags1], a ld [wChannel3Flags1], a ld [wChannel4Flags1], a ld [wSoundInput], a ret SFXChannelsOff:: ; Quickly turn off sound effect channels xor a ld [wChannel5Flags1], a ld [wChannel6Flags1], a ld [wChannel7Flags1], a ld [wChannel8Flags1], a ld [wSoundInput], a ret