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Use maskbits some more

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This commit is contained in:
Remy Oukaour
2018-01-11 12:00:01 -05:00
parent a436bbc23b
commit 94d6a32721
50 changed files with 576 additions and 452 deletions
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32
audio/engine.asm
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@@ -408,7 +408,7 @@ UpdateChannels: ; e8125
ret
.asm_e824d
ld a, $3f
ld a, $3f ; sound length
ld [rNR31], a
xor a
ld [rNR30], a
@@ -1304,8 +1304,8 @@ ParseSFXOrRest: ; e8698
ld [hl], a
; are we on the last channel? (noise sampling)
ld a, [CurChannel]
and $3
cp $3
maskbits NUM_MUSIC_CHANS +- 1
cp CHAN4
ret z
; update hi frequency from next param
call GetMusicByte
@@ -1320,8 +1320,8 @@ GetNoiseSample: ; e86c5
; load ptr to sample header in NoiseSampleAddress
; are we on the last channel?
ld a, [CurChannel]
and $3
cp $3
and NUM_MUSIC_CHANS +- 1
cp CHAN4
; ret if not
ret nz
; update note duration
@@ -1668,7 +1668,7 @@ MusicEE; e883e
; if ????, jump
; get channel
ld a, [CurChannel]
and $3 ; ch0-3
maskbits NUM_MUSIC_CHANS +- 1
ld e, a
ld d, 0
; hl = Channel1JumpCondition + channel id
@@ -1966,8 +1966,8 @@ Music_NoteType: ; e8963
add hl, bc
ld [hl], a
ld a, [CurChannel]
and $3
cp CHAN8 & $3
maskbits NUM_MUSIC_CHANS +- 1
cp CHAN4
ret z
; intensity
call Music_Intensity
@@ -2414,7 +2414,7 @@ SetLRTracks: ; e8b1b
push de
; store current channel in de
ld a, [CurChannel]
and $3
maskbits NUM_MUSIC_CHANS +- 1
ld e, a
ld d, 0
; get this channel's lr tracks
@@ -2449,7 +2449,7 @@ _PlayMusic:: ; e8b30
call LoadMusicByte ; store first byte of music header in a
rlca
rlca
and $3 ; get number of channels
maskbits NUM_MUSIC_CHANS +- 1
inc a
.loop
; start playing channels
@@ -2505,7 +2505,7 @@ _PlayCryHeader:: ; e8b79
; Top 2 bits contain the number of channels
rlca
rlca
and 3
maskbits NUM_MUSIC_CHANS +- 1
; For each channel:
inc a
@@ -2530,8 +2530,8 @@ _PlayCryHeader:: ; e8b79
; No tempo for channel 4
ld a, [CurChannel]
and 3
cp 3
maskbits NUM_MUSIC_CHANS +- 1
cp CHAN4
jr nc, .start
; Tempo is effectively length
@@ -2669,7 +2669,7 @@ _PlaySFX:: ; e8c04
call LoadMusicByte
rlca ; top 2
rlca ; bits
and $3
maskbits NUM_MUSIC_CHANS +- 1
inc a ; # channels -> # loops
.startchannels
push af
@@ -2722,7 +2722,7 @@ PlayStereoSFX:: ; e8ca6
call LoadMusicByte
rlca
rlca
and 3 ; ch1-4
maskbits NUM_MUSIC_CHANS +- 1
inc a
.loop
@@ -2736,7 +2736,7 @@ PlayStereoSFX:: ; e8ca6
push de
; get tracks for this channel
ld a, [CurChannel]
and 3 ; ch1-4
maskbits NUM_MUSIC_CHANS +- 1
ld e, a
ld d, 0
call GetLRTracks