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commented audio code
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YamaArashi
parent
40c1ecb437
commit
2b01815999
42 changed files with 1740 additions and 1515 deletions
233
home/audio.asm
233
home/audio.asm
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@ -3,112 +3,139 @@ PlayDefaultMusic:: ; 2307 (0:2307)
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xor a
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ld c, a
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ld d, a
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ld [wcfca], a
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jr Func_2324
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ld [wLastMusicSoundID], a
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jr PlayDefaultMusicCommon
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Func_2312:: ; 2312 (0:2312)
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ld c, $a
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ld d, $0
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PlayDefaultMusicFadeOutCurrent:: ; 2312 (0:2312)
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; Fade out the current music and then play the default music.
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ld c, 10
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ld d, 0
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ld a, [wd72e]
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bit 5, a
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jr z, Func_2324
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bit 5, a ; has a battle just ended?
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jr z, PlayDefaultMusicCommon
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xor a
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ld [wcfca], a
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ld c, $8
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ld [wLastMusicSoundID], a
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ld c, 8
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ld d, c
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Func_2324:: ; 2324 (0:2324)
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PlayDefaultMusicCommon:: ; 2324 (0:2324)
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ld a, [wWalkBikeSurfState]
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and a
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jr z, .asm_2343
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jr z, .walking
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cp $2
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jr z, .asm_2332
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jr z, .surfing
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ld a, MUSIC_BIKE_RIDING
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jr .asm_2334
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.asm_2332
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jr .next
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.surfing
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ld a, MUSIC_SURFING
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.asm_2334
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.next
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ld b, a
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ld a, d
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and a
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and a ; should current music be faded out first?
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ld a, BANK(Music_BikeRiding)
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jr nz, .asm_233e
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ld [wc0ef], a
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.asm_233e
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ld [wc0f0], a
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jr .asm_234c
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.asm_2343
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ld a, [wd35b]
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jr nz, .next2
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; Only change the audio ROM bank if the current music isn't going to be faded
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; out before the default music begins.
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ld [wAudioROMBank], a
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.next2
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; [wAudioSavedROMBank] will be copied to [wAudioROMBank] after fading out the
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; current music (if the current music is faded out).
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ld [wAudioSavedROMBank], a
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jr .next3
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.walking
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ld a, [wMapMusicSoundID]
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ld b, a
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call Func_2385
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jr c, .asm_2351
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.asm_234c
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ld a, [wcfca]
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cp b
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ret z
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.asm_2351
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call CompareMapMusicBankWithCurrentBank
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jr c, .next4
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.next3
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ld a, [wLastMusicSoundID]
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cp b ; is the default music already playing?
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ret z ; if so, do nothing
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.next4
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ld a, c
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ld [wMusicHeaderPointer], a
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ld [wAudioFadeOutControl], a
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ld a, b
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ld [wcfca], a
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ld [wc0ee], a
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ld [wLastMusicSoundID], a
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ld [wNewSoundID], a
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jp PlaySound
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Func_235f:: ; 235f (0:235f)
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ld a, [wc0ef]
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UpdateMusic6Times:: ; 235f (0:235f)
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; This is called when entering a map, before fading out the current music and
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; playing the default music (i.e. the map's music or biking/surfing music).
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ld a, [wAudioROMBank]
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ld b, a
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cp BANK(Audio1_UpdateMusic)
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jr nz, .checkForAudio2
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.audio1
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; audio 1
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ld hl, Audio1_UpdateMusic
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jr .asm_2378
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jr .next
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.checkForAudio2
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cp BANK(Audio2_UpdateMusic)
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jr nz, .audio3
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.audio2
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; audio 2
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ld hl, Audio2_UpdateMusic
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jr .asm_2378
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jr .next
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.audio3
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ld hl, Audio3_UpdateMusic
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.asm_2378
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ld c, $6
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.asm_237a
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.next
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ld c, 6
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.loop
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push bc
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push hl
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call Bankswitch
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pop hl
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pop bc
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dec c
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jr nz, .asm_237a
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jr nz, .loop
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ret
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Func_2385:: ; 2385 (0:2385)
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ld a, [wd35c]
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CompareMapMusicBankWithCurrentBank:: ; 2385 (0:2385)
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; Compares the map music's audio ROM bank with the current audio ROM bank
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; and updates the audio ROM bank variables.
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; Returns whether the banks are different in carry.
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ld a, [wMapMusicROMBank]
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ld e, a
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ld a, [wc0ef]
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ld a, [wAudioROMBank]
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cp e
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jr nz, .asm_2394
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ld [wc0f0], a
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jr nz, .differentBanks
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ld [wAudioSavedROMBank], a
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and a
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ret
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.asm_2394
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ld a, c
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.differentBanks
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ld a, c ; this is a fade-out counter value and it's always non-zero
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and a
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ld a, e
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jr nz, .asm_239c
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ld [wc0ef], a
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.asm_239c
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ld [wc0f0], a
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jr nz, .next
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; If the fade-counter is non-zero, we don't change the audio ROM bank because
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; it's needed to keep playing the music as it fades out. The FadeOutAudio
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; routine will take care of copying [wAudioSavedROMBank] to [wAudioROMBank]
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; when the music has faded out.
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ld [wAudioROMBank], a
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.next
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ld [wAudioSavedROMBank], a
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scf
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ret
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PlayMusic:: ; 23a1 (0:23a1)
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ld b, a
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ld [wc0ee], a
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ld [wNewSoundID], a
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xor a
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ld [wMusicHeaderPointer], a
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ld [wAudioFadeOutControl], a
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ld a, c
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ld [wc0ef], a
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ld [wc0f0], a
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ld [wAudioROMBank], a
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ld [wAudioSavedROMBank], a
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ld a, b
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; plays music specified by a. If value is $ff, music is stopped
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@ -117,66 +144,74 @@ PlaySound:: ; 23b1 (0:23b1)
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push de
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push bc
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ld b, a
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ld a, [wc0ee]
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ld a, [wNewSoundID]
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and a
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jr z, .asm_23c8
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jr z, .next
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xor a
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ld [wc02a], a
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ld [wc02b], a
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ld [wc02c], a
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ld [wc02d], a
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.asm_23c8
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ld a, [wMusicHeaderPointer]
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and a
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jr z, .asm_23e3
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ld a, [wc0ee]
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and a
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jr z, .asm_2425
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ld [wChannelSoundIDs + CH4], a
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ld [wChannelSoundIDs + CH5], a
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ld [wChannelSoundIDs + CH6], a
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ld [wChannelSoundIDs + CH7], a
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.next
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ld a, [wAudioFadeOutControl]
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and a ; has a fade-out length been specified?
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jr z, .noFadeOut
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ld a, [wNewSoundID]
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and a ; is the new sound ID 0?
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jr z, .done ; if so, do nothing
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xor a
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ld [wc0ee], a
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ld a, [wcfca]
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cp $ff
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jr nz, .asm_2414
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ld [wNewSoundID], a
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ld a, [wLastMusicSoundID]
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cp $ff ; has the music been stopped?
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jr nz, .fadeOut ; if not, fade out the current music
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; If it has been stopped, start playing the new music immediately.
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xor a
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ld [wMusicHeaderPointer], a
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.asm_23e3
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ld [wAudioFadeOutControl], a
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.noFadeOut
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xor a
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ld [wc0ee], a
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ld [wNewSoundID], a
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ld a, [H_LOADEDROMBANK]
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ld [$ffb9], a
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ld a, [wc0ef]
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ld [hSavedROMBank], a
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ld a, [wAudioROMBank]
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ld [H_LOADEDROMBANK], a
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ld [MBC1RomBank], a
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cp BANK(Audio1_9876)
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cp BANK(Audio1_PlaySound)
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jr nz, .checkForAudio2
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.audio1
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; audio 1
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ld a, b
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call Audio1_9876
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jr .asm_240b
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call Audio1_PlaySound
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jr .next2
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.checkForAudio2
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cp BANK(Audio2_22035)
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cp BANK(Audio2_PlaySound)
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jr nz, .audio3
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.audio2
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; audio 2
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ld a, b
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call Audio2_22035
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jr .asm_240b
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call Audio2_PlaySound
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jr .next2
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.audio3
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ld a, b
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call Audio3_7d8ea
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.asm_240b
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ld a, [$ffb9]
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call Audio3_PlaySound
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.next2
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ld a, [hSavedROMBank]
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ld [H_LOADEDROMBANK], a
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ld [MBC1RomBank], a
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jr .asm_2425
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.asm_2414
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jr .done
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.fadeOut
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ld a, b
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ld [wcfca], a
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ld a, [wMusicHeaderPointer]
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ld [wcfc8], a
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ld [wcfc9], a
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ld [wLastMusicSoundID], a
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ld a, [wAudioFadeOutControl]
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ld [wAudioFadeOutCounterReloadValue], a
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ld [wAudioFadeOutCounter], a
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ld a, b
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ld [wMusicHeaderPointer], a
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.asm_2425
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ld [wAudioFadeOutControl], a
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.done
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pop bc
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pop de
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pop hl
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