Rudimentary SFX playback.

src/main.asm

@@ -19,10 +19,6 @@ Main::
     xor a, a
     ldh [rLCDC], a
 
-    ; Save some power and turn off the audio.
-    xor a, a
-    ldh [rNR52], a
-
     ; We use a single set of tiles for the entire game, so we copy it at the start.
     ld de, Tiles
     ld hl, _VRAM
@@ -67,6 +63,9 @@ Main::
 
 
 EventLoop::
+    ; Play the sound effect, if any.
+    call SFXPlay
+
     ; Wrangle inputs and timers at the start of every frame.
     call GetInput
     call HandleTimers
@@ -109,6 +108,7 @@ InitializeVariables:
     call ScoreInit
     call LevelInit
     call FieldInit
+    call SFXInit
     ret
 
 

src/res/sources/sfxregs.txt

@@ -0,0 +1,279 @@
+$02, $00,
+$04, $80,
+$07, $00,
+$09, $80,
+$0C, $00,
+$0E, $80,
+$11, $00,
+$13, $80,
+$00, $00,
+$16, $8F,
+$15, $FF,
+$14, $77,
+$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,
+$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,
+$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,
+$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,
+$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,
+$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,
+$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,
+$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, $87,
+$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,
+$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,
+$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,
+$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,
+$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,
+$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,
+$07, $08,
+$08, $39,
+$09, $87,
+$FF, $FE,

src/sfx.asm

@@ -0,0 +1,100 @@
+IF !DEF(SFX_ASM)
+DEF SFX_ASM EQU 1
+
+
+INCLUDE "globals.asm"
+
+
+SECTION "Sound Effect Data", ROM0
+sSFXNextPieceI::
+    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,
+    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,
+    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,
+    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,
+    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,
+    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,
+    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,
+    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,
+    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,
+    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,
+    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,
+    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,
+    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,
+    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,
+    db $07, $08, $08, $39, $09, $87, $FE
+
+
+SECTION "SFX Variables", HRAM
+hPlayhead:: ds 2
+
+
+SECTION "SFX Functions", ROM0
+SFXInit::
+    ; Audio on, volume on, and enable all channels.
+    ld a, $80
+    ldh [rNR52], a
+    ld a, $FF
+    ldh [rNR51], a
+    ld a, $77
+    ldh [rNR50], a
+
+    ;xor a, a
+    ;ldh [hPlayhead], a
+    ;ldh [hPlayhead+1], a
+
+    ld a, LOW(sSFXNextPieceI)
+    ldh [hPlayhead], a
+    ld a, HIGH(sSFXNextPieceI)
+    ldh [hPlayhead+1], a
+    ret
+
+
+SFXPlay::
+    ; Load the playhead position into HL.
+    ldh a, [hPlayhead]
+    ld l, a
+    ldh a, [hPlayhead+1]
+    ld h, a
+
+    ; Nothing to do if it's a null ptr.
+    or a, l
+    ret z
+
+    ; Otherwise, get the register to write to.
+.getRegister
+    ld a, [hl]
+    inc hl
+
+    ; If it's $FE, then we're done.
+    cp a, $FE
+    jr nz, :+
+    xor a, a
+    ldh [hPlayhead], a
+    ldh [hPlayhead+1], a
+    ret
+
+    ; If it's $FF, then we're done for this frame.
+:   cp a, $FF
+    jr z, .savePlayhead
+
+    ; Otherwise, put the register in C.
+    add a, $10
+    ld c, a
+
+    ; Get the value to write.
+    ld a, [hl]
+    inc hl
+
+    ; Write it and loop.
+    ldh [$ff00+c], a
+    jr .getRegister
+
+.savePlayhead
+    ld a, l
+    ldh [hPlayhead], a
+    ld a, h
+    ldh [hPlayhead+1], a
+    ret
+
+
+ENDC

tools/Emulicious.ini

@@ -1,5 +1,5 @@
 #Emulicious settings file
-#Mon Oct 16 07:51:58 CEST 2023
+#Mon Oct 16 13:24:33 CEST 2023
 WindowEventViewerWindowHeight=861
 WindowEventViewerWindowDivider=309
 WindowMemoryTracerWindowY=631
@@ -72,7 +72,7 @@ InterruptBreakpointEnabled=false
 OutlineWidth=425
 DebuggerEventFiltersGameBoy=
 GameBoyErrorBreakpointSuspend9=true
-WindowMemoryEditorOpen=true
+WindowMemoryEditorOpen=false
 GameBoyErrorBreakpointSuspend8=true
 GameBoyErrorBreakpointSuspend7=true
 WindowPaletteViewerY=619
@@ -99,7 +99,7 @@ Gamepad1Key30=-1
 BankSwapAtPCBreakpointEnabled=false
 DebuggerMemorySelectedTab=HRAM
 WindowVideoViewerOpen=false
-WindowMemoryEditorTabVisibleRect=0,160,583,384
+WindowMemoryEditorTabVisibleRect=0,0,583,128
 Gamepad1Key29=-1
 Gamepad1Key28=-1
 Gamepad1Key27=-1
@@ -135,7 +135,7 @@ Gamepad1Key13=-1
 Gamepad1Key12=-1
 Gamepad1Key11=-1
 Gamepad1Key10=-1
-WindowMemoryEditorSelectedAddress=160
+WindowMemoryEditorSelectedAddress=16
 WindowMemoryEditorWidth=665
 GameBoyErrorBreakpointCondition9=
 GameBoyErrorBreakpointCondition8=
@@ -154,7 +154,7 @@ Gamepad0Key35=-1
 Gamepad0Key34=-1
 Gamepad0Key33=-1
 Gamepad0Key32=-1
-WindowMemoryEditorSelectedTab=RAM
+WindowMemoryEditorSelectedTab=I/O
 Gamepad0Key31=-1
 Gamepad0Key30=-1
 SMSGamepadAThreshold=50