101 lines
3.9 KiB
NASM
101 lines
3.9 KiB
NASM
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IF !DEF(SFX_ASM)
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DEF SFX_ASM EQU 1
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INCLUDE "globals.asm"
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SECTION "Sound Effect Data", ROM0
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sSFXNextPieceI::
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db $02, $F0, $07, $F0, $01, $BF, $01, $BF, $02, $F0, $03, $AC, $04, $85, $06, $7F, $06, $7F, $07, $80, $08, $14, $09, $87, $FF, $FF, $01, $BF, $01, $BF, $02, $F0, $03, $ED, $04, $85,
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db $06, $7F, $06, $7F, $07, $80, $08, $2D, $09, $87, $FF, $FF, $01, $BF, $01, $BF, $02, $F0, $03, $27, $04, $86, $06, $7F, $06, $7F, $07, $80, $08, $44, $09, $87, $FF, $FF, $01, $BF,
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db $01, $BF, $02, $F0, $03, $AC, $04, $85, $06, $7F, $06, $7F, $07, $80, $08, $14, $09, $87, $FF, $FF, $01, $BF, $01, $BF, $02, $F0, $03, $ED, $04, $85, $06, $7F, $06, $7F, $07, $80,
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db $08, $2D, $09, $87, $FF, $FF, $01, $BF, $01, $BF, $02, $F0, $03, $27, $04, $86, $06, $7F, $06, $7F, $07, $80, $08, $44, $09, $87, $FF, $FF, $01, $BF, $01, $BF, $02, $F0, $03, $5B,
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db $04, $86, $06, $7F, $06, $7F, $07, $80, $08, $59, $09, $87, $FF, $FF, $01, $BF, $01, $BF, $02, $F0, $03, $AC, $04, $85, $06, $7F, $06, $7F, $07, $80, $08, $14, $09, $87, $FF, $FF,
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db $01, $BF, $01, $BF, $02, $F0, $03, $27, $04, $86, $06, $7F, $06, $7F, $07, $80, $08, $44, $09, $87, $FF, $FF, $01, $BF, $01, $BF, $02, $F0, $03, $72, $04, $86, $06, $7F, $06, $7F,
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db $07, $80, $08, $62, $09, $87, $FF, $FF, $01, $BF, $01, $BF, $02, $F0, $03, $D6, $04, $86, $06, $7F, $06, $7F, $07, $80, $08, $8A, $09, $87, $FF, $FF, $01, $BF, $01, $BF, $02, $F0,
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db $03, $14, $04, $87, $06, $7F, $06, $7F, $07, $80, $08, $A2, $09, $87, $FF, $FF, $01, $BF, $01, $BF, $02, $F0, $03, $39, $04, $87, $06, $7F, $06, $7F, $07, $80, $08, $B1, $09, $87,
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db $FF, $FF, $01, $BF, $01, $BF, $02, $F0, $03, $4F, $04, $87, $06, $7F, $06, $7F, $07, $80, $08, $BA, $09, $87, $FF, $FF, $01, $BF, $01, $BF, $02, $F0, $03, $62, $04, $87, $06, $7F,
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db $06, $7F, $07, $80, $08, $C1, $09, $87, $FF, $FF, $07, $F0, $01, $BF, $01, $BF, $02, $D0, $03, $6B, $04, $87, $06, $BF, $06, $BF, $07, $D0, $08, $39, $09, $87, $FF, $FF, $01, $BF,
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db $01, $BF, $02, $D0, $03, $6B, $04, $87, $06, $BF, $06, $BF, $07, $D0, $08, $39, $09, $87, $FF, $FF, $01, $BF, $01, $BF, $02, $D0, $03, $6B, $04, $87, $06, $BF, $06, $BF, $07, $D0,
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db $08, $39, $09, $87, $FF, $FF, $FF, $FF, $FF, $FF, $01, $BF, $01, $BF, $02, $10, $03, $6B, $04, $87, $06, $BF, $06, $BF, $07, $10, $08, $39, $09, $87, $FF, $FF, $01, $BF, $01, $BF,
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db $02, $10, $03, $6B, $04, $87, $06, $BF, $06, $BF, $07, $10, $08, $39, $09, $87, $FF, $FF, $01, $BF, $01, $BF, $02, $10, $03, $6B, $04, $87, $06, $BF, $06, $BF, $07, $10, $08, $39,
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db $09, $87, $FF, $FF, $FF, $FF, $01, $BF, $01, $BF, $02, $00, $03, $6B, $04, $87, $06, $BF, $06, $BF, $07, $00, $08, $39, $09, $87, $FF, $FF, $FF, $FF, $02, $08, $03, $6B, $04, $87,
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db $07, $08, $08, $39, $09, $87, $FE
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SECTION "SFX Variables", HRAM
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hPlayhead:: ds 2
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SECTION "SFX Functions", ROM0
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SFXInit::
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; Audio on, volume on, and enable all channels.
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ld a, $80
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ldh [rNR52], a
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ld a, $FF
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ldh [rNR51], a
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ld a, $77
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ldh [rNR50], a
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;xor a, a
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;ldh [hPlayhead], a
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;ldh [hPlayhead+1], a
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ld a, LOW(sSFXNextPieceI)
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ldh [hPlayhead], a
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ld a, HIGH(sSFXNextPieceI)
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ldh [hPlayhead+1], a
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ret
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SFXPlay::
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; Load the playhead position into HL.
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ldh a, [hPlayhead]
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ld l, a
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ldh a, [hPlayhead+1]
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ld h, a
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; Nothing to do if it's a null ptr.
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or a, l
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ret z
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; Otherwise, get the register to write to.
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.getRegister
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ld a, [hl]
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inc hl
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; If it's $FE, then we're done.
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cp a, $FE
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jr nz, :+
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xor a, a
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ldh [hPlayhead], a
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ldh [hPlayhead+1], a
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ret
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; If it's $FF, then we're done for this frame.
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: cp a, $FF
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jr z, .savePlayhead
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; Otherwise, put the register in C.
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add a, $10
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ld c, a
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; Get the value to write.
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ld a, [hl]
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inc hl
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; Write it and loop.
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ldh [$ff00+c], a
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jr .getRegister
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.savePlayhead
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ld a, l
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ldh [hPlayhead], a
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ld a, h
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ldh [hPlayhead+1], a
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ret
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ENDC
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