feat: change head facing direction on input

Corrects the input handling code to actually skip when the button is not
pressed

main.asm

@@ -36,9 +36,9 @@ WaitVBlank:
 	jp nz, .resetOAM
 
 	; Copy cat sprite
-	ld de, GfxCat
+	ld de, Sprites
 	ld hl, $8000
-	ld bc, GfxCat.end - GfxCat
+	ld bc, Sprites.end - Sprites
 	call Memcopy
 
 	; Reset positions
@@ -55,7 +55,7 @@ WaitVBlank:
 	; Copy the tile data
 	ld de, Tiles
 	ld hl, $9000
-	ld bc, TilesEnd - Tiles
+	ld bc, Tiles.end - Tiles
 	call Memcopy
 
 	; Clear the tilemap
@@ -105,35 +105,61 @@ Main::
 HandleInput::
 	ld a, [wJoypadState]
 	bit PADB_LEFT, a
-	jr nz, .leftend
+	jr z, .leftend
+
+	ld a, PlayerHead.left - PlayerHead
+	ld [wMetaspritePosition.whichHead], a
 
 	ld a, [wMetaspritePosition.x]
-	add a, 16
+	sub a, 16
 	ld b, a
 	ld [wMetaspritePosition.x], a
 	ld a, [wMetaspritePosition.x+1]
-	adc 0
+	sbc 0
 	ld c, a
 	ld [wMetaspritePosition.x+1], a
 .leftend:
 
 	ld a, [wJoypadState]
 	bit PADB_RIGHT, a
-	jr nz, .rightend
+	jr z, .rightend
+
+	ld a, PlayerHead.right - PlayerHead
+	ld [wMetaspritePosition.whichHead], a
 
 	ld a, [wMetaspritePosition.x]
-	sub a, 16
+	add a, 16
 	ld b, a
 	ld [wMetaspritePosition.x], a
 	ld a, [wMetaspritePosition.x+1]
-	sbc 0
+	adc 0
 	ld c, a
 	ld [wMetaspritePosition.x+1], a
 .rightend:
 
 	ld a, [wJoypadState]
 	bit PADB_UP, a
-	jr nz, .upend
+	jr z, .upend
+
+	ld a, PlayerHead.up - PlayerHead
+	ld [wMetaspritePosition.whichHead], a
+
+	ld a, [wMetaspritePosition.y]
+	sub a, 16
+	ld b, a
+	ld [wMetaspritePosition.y], a
+	ld a, [wMetaspritePosition.y+1]
+	sbc 0
+	ld c, a
+	ld [wMetaspritePosition.y+1], a
+.upend:
+ 
+	ld a, [wJoypadState]
+	bit PADB_DOWN, a
+	jr z, .downend
+
+	ld a, PlayerHead.down - PlayerHead
+	ld [wMetaspritePosition.whichHead], a
 
 	ld a, [wMetaspritePosition.y]
 	add a, 16
@@ -143,20 +169,6 @@ HandleInput::
 	adc 0
 	ld c, a
 	ld [wMetaspritePosition.y+1], a
-.upend:
- 
-	ld a, [wJoypadState]
-	bit PADB_DOWN, a
-	jr nz, .downend
-
-	ld a, [wMetaspritePosition.y]
-	sub a, 16
-	ld b, a
-	ld [wMetaspritePosition.y], a
-	ld a, [wMetaspritePosition.y+1]
-	sbc 0
-	ld c, a
-	ld [wMetaspritePosition.y+1], a
 .downend: 
 
 	; Skip jump code if not on ground
@@ -206,14 +218,13 @@ HandleRender::
 
 	ld a, [wMetaspritePosition.frame]
 	inc a
-	cp PlayerMetasprite.framesEnd - PlayerMetasprite.framesStart
+	cp PlayerTorso.framesEnd - PlayerTorso.framesStart
 	jr nz, .skipAnimReset
 	ld a, 0
 .skipAnimReset
 	ld [wMetaspritePosition.frame], a
 .skipAnim
 
-	; Render the player
 	; load de
 	ld a, [wMetaspritePosition.x]
 	ld e, a
@@ -233,7 +244,7 @@ HandleRender::
 	ld b, a
 
 	; Add frameOffset
-	ld hl, PlayerMetasprite.framesStart
+	ld hl, PlayerTorso.framesStart
 	ld a, [wMetaspritePosition.frame]
 	add a, l
 	ld l, a
@@ -242,15 +253,43 @@ HandleRender::
 .noCarry1
 	ld a, [hl]
 
-	ld hl, PlayerMetasprite
+	ld hl, PlayerTorso
 	add a, l
 	ld l, a
 	jr nc, .noCarry2
 	inc h
-.noCarry2
-
+.noCarry2 
 	call RenderMetasprite
 
+ 	; Render player head
+	; load de
+	ld a, [wMetaspritePosition.x]
+	ld e, a
+	ld a, [wMetaspritePosition.x + 1]
+	ld d, a
+
+	; load bc
+	ld a, [wMetaspritePosition.z]
+	ld c, a
+	ld a, [wMetaspritePosition.y]
+	add a, c
+	ld c, a
+	ld a, [wMetaspritePosition.z + 1]
+	ld b, a
+	ld a, [wMetaspritePosition.y + 1]
+	adc a, b
+	ld b, a
+
+	; load hl
+	ld hl, PlayerHead
+	ld a, [wMetaspritePosition.whichHead]
+	add a, l
+	ld l, a
+	jr nc, .noCarry3
+	inc h
+.noCarry3
+	call RenderMetasprite 
+
 	; Render the shadow
 	; load de
 	ld a, [wMetaspritePosition.x]
@@ -341,7 +380,7 @@ UpdateJoypadState::
 	ld a, [hl]
 	ld a, [hl]
 	ld [hl], P1F_GET_DPAD
-	cpl ; Inputs are active low - invert so it makes more sense
+	cpl ; Inputs are active low - inv so it makes more sense
 	and PADF_A | PADF_B | PADF_SELECT | PADF_START
 	ld c, a ; Store lower 4 button bits in c
 
@@ -354,7 +393,7 @@ UpdateJoypadState::
 	ld [hl], P1F_GET_NONE ; Disable joypad inputs
 
 	swap a ; Swap the nibbles to store dpad in upper 4 bits
-	cpl    ; invert the bits
+	cpl    ; inv the bits
 	and PADF_RIGHT | PADF_LEFT | PADF_UP | PADF_DOWN
 	or c
 	ld c, a
@@ -433,7 +472,7 @@ SECTION "Tile data", ROM0
 
 Tiles:
 	INCBIN "tileset.2bpp"
-TilesEnd:
+.end:
 
 SECTION "Tilemap", ROM0
 
@@ -443,7 +482,7 @@ TilemapEnd:
 
 
 SECTION "Graphics", ROM0
-GfxCat:
+Sprites:
 	INCBIN "sprites.2bpp"
 .end::
 
@@ -451,28 +490,35 @@ ShadowMetasprite:
 	db 12, 0, 1, 0
 	db 128
 
-PlayerMetasprite:
-.vertWalk1:
+PlayerHead:
+.down:
 	db 0, 0, 2, 0
+	db 128
+.right:
+	db 0, 0, 3, 0
+	db 128
+.up:
+	db 0, 0, 4, 0
+	db 128
+.left:
+	db 0, 0, 3, OAMF_XFLIP
+	db 128
+
+PlayerTorso:
+.vWalk1:
+	db 8, 0, 5, 0
+	db 128
+.vWalk2:
 	db 8, 0, 6, 0
 	db 128
-.vertWalk2:
-	db 0, 0, 2, 0
-	db 8, 0, 7, 0
-	db 128
-.vertWalk3:
-	db 0, 0, 2, 0
-	db 8, 0, 6, 0
-	db 128
-.vertWalk4:
-	db 0, 0, 2, 0
-	db 8, 0, 8, 0
+.vWalk3:
+	db 8, 0, 6, OAMF_XFLIP
 	db 128
 .framesStart
-	db .vertWalk1 - PlayerMetasprite
-	db .vertWalk2 - PlayerMetasprite
-	db .vertWalk3 - PlayerMetasprite
-	db .vertWalk4 - PlayerMetasprite
+	db .vWalk1 - PlayerTorso
+	db .vWalk2 - PlayerTorso
+	db .vWalk1 - PlayerTorso
+	db .vWalk3 - PlayerTorso
 .framesEnd
 
 SECTION "Position Vars", WRAM0 
@@ -487,6 +533,8 @@ wMetaspritePosition::
 	dw
 .frame:
 	db
+.whichHead:
+	db
 
 ; Q4.4 fixed-point velocity
 wMetaspriteVelocity::