mirror of
https://github.com/a2-4am/million-perfect-letters.git
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149 lines
3.1 KiB
Plaintext
149 lines
3.1 KiB
Plaintext
;
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; convenience functions for playing sounds through different libraries
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;
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; Public functions:
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; - InitSound
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; - ReinitSoundAfterPrefChange
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; - LoopSound
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; - PlaySound
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; - SoftBell
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;
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gMockingboardSlot
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!byte 0
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gSoundPref
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!byte 1 ; 0 = no sound, 1 = sound
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progressionIndex ; [byte][private]
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!byte 0
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kProgressionsByWorld ; chord progression to use on each world (index=world)
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!word k251Progression
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!word k251Progression
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!word k251Progression
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!word k251Progression
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!word k6251Progression
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!word k6251Progression
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!word k6251Progression
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!word k6251Progression
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!word k16251Progression
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!word k16251Progression
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!word k16251Progression
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!word k16251Progression
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k251Progression
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!byte 2
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!word M_ii
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!word M_V
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k6251Progression
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!byte 3
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!word M_vi6
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!word M_ii
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!word M_V
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k16251Progression
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!byte 4
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!word M_I
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!word M_vi6
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!word M_ii
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!word M_V
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kFinalChord
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!word M_I_LONG
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ReinitSoundAfterPrefChange
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ldx gMockingboardSlot
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InitSound
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stx gMockingboardSlot
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lda gSoundPref
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beq @theSoundOfSilence
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cpx #0
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beq @playThroughSpeaker
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+LDADDR MockingDuet
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bne + ; always branches
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@playThroughSpeaker
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+LDADDR ElectricDuet
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bne + ; always branches
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@theSoundOfSilence
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+LDADDR Silence
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+
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+ST16 SoundLibraryDispatch
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rts
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-
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+LD16 $FE
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LoopSound
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sec
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+HIDE_NEXT_BYTE
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PlaySound
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clc
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php
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+ST16 $1E
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+ST16 $FE
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SoundLibraryDispatch=*+1
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jsr $FDFD ; SMC
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plp
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bcc +
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lda KBD
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bpl -
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+ lda KBD
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Silence rts
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InitPuzzleSound
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lda #$FF
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sta progressionIndex
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rts
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PlayNextChord
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lda gWorldID
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asl
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tax
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lda kProgressionsByWorld, x
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sta $FE
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inx
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lda kProgressionsByWorld, x
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sta $FF
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inc progressionIndex
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ldy #0
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lda ($FE), y
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cmp progressionIndex
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bne +
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dec progressionIndex
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+ lda progressionIndex
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asl
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tay
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iny
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lda ($FE), y
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pha
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iny
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lda ($FE), y
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tay
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pla
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jmp PlaySound
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PlayFinalChord
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; out: preserves A
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pha
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+LD16 kFinalChord
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jsr PlaySound
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pla
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rts
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;------------------------------------------------------------------------------
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; SoftBell
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;
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; in: none
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; out: all registers and flags clobbered
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;------------------------------------------------------------------------------
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SoftBell
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lda gSoundPref
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beq +
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ldx #32
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- lda #2
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jsr ROM_WAIT
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bit SPEAKER
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lda #33
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jsr ROM_WAIT
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bit SPEAKER
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dex
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bne -
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+ rts
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