1 files changed, 73 insertions, 0 deletions
diff --git a/engine/pinball_game/billboard.asm b/engine/pinball_game/billboard.asm
new file mode 100755
index 0000000..33975b7
--- /dev/null
+++ b/engine/pinball_game/billboard.asm
@@ -0,0 +1,73 @@
+LoadBillboardPicture: ; 0xf178
+; Loads a billboard picture's tiles into VRAM
+; input:  a = billboard picture id
+	push hl
+	ld c, a
+	ld b, $0
+	sla c
+	add c  ; a has been multplied by 3 becuase entires in BillboardPicturePointers are 3 bytes long
+	ld c, a
+	ld hl, BillboardPicturePointers
+	add hl, bc
+	ld a, [hli]
+	ld c, a
+	ld a, [hli]
+	ld b, a
+	ld a, [hl]
+	ld h, b
+	ld l, c
+	ld de, vTilesSH tile $10   ; destination address to copy the tiles
+	ld bc, $180    ; billboard pictures are $180 bytes
+	call LoadVRAMData  ; loads the tiles into VRAM
+	pop hl
+	ret
+
+LoadBillboardOffPicture: ; 0xf196
+; Loads the dimly-lit "off" version of a billboard picture into VRAM
+; Input:  a = billboard picture id
+	push hl
+	ld c, a
+	ld b, $0
+	sla c
+	add c
+	ld c, a
+	ld hl, BillboardPicturePointers
+	add hl, bc
+	ld a, [hli]
+	ld c, a
+	ld a, [hli]
+	ld b, a
+	ld a, [hl]
+	ld h, b
+	ld l, c
+	ld bc, $0180  ; get the address of the "off" version of the picture
+	add hl, bc
+	ld de, vTilesSH tile $10
+	ld bc, $0180
+	call LoadVRAMData
+	pop hl
+	ret
+
+INCLUDE "data/billboard/billboard_pic_pointers.asm"
+
+LoadGreyBillboardPaletteData: ; 0xf269
+	ld a, [hGameBoyColorFlag]
+	and a
+	jr z, .loadPaletteMap
+	ld a, BANK(StageRedFieldBottomBGPalette5) ; also used in blue stage
+	ld hl, StageRedFieldBottomBGPalette5
+	ld de, $0030
+	ld bc, $0008
+	call Func_7dc
+.loadPaletteMap
+	ld a, BANK(GreyBillboardPaletteMap)
+	ld de, GreyBillboardPaletteMap
+	hlCoord 7, 4, vBGMap
+	call LoadBillboardPaletteMap
+	ret
+
+GreyBillboardPaletteMap:
+	db $06, $06, $06, $06, $06, $06
+	db $06, $06, $06, $06, $06, $06
+	db $06, $06, $06, $06, $06, $06
+	db $06, $06, $06, $06, $06, $06