diff options
Diffstat (limited to 'engine/battle/scale_sprites.asm')
| -rw-r--r-- | engine/battle/scale_sprites.asm | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/engine/battle/scale_sprites.asm b/engine/battle/scale_sprites.asm index c614d638..794a65ab 100644 --- a/engine/battle/scale_sprites.asm +++ b/engine/battle/scale_sprites.asm @@ -24,7 +24,7 @@ ScaleFirstThreeSpriteColumnsByTwo: .columnInnerLoop push bc ld a, [de] - ld bc, -(7*8)+1 ; $ffc9, scale lower nybble and seek to previous output column + ld bc, -(7*8)+1 ; -$37, scale lower nybble and seek to previous output column call ScalePixelsByTwo ld a, [de] dec de @@ -39,7 +39,7 @@ ScaleFirstThreeSpriteColumnsByTwo: dec de dec de ld a, b - ld bc, -7*8 ; $ffc8, skip one output column (which has already been written along with the current one) + ld bc, -7*8 ; -$38, skip one output column (which has already been written along with the current one) add hl, bc ld b, a dec b @@ -48,16 +48,16 @@ ScaleFirstThreeSpriteColumnsByTwo: ScaleLastSpriteColumnByTwo: ld a, 4*8 - 4 ; $1c, 4 tiles minus 4 unused rows - ld [H_SPRITEINTERLACECOUNTER], a + ldh [hSpriteInterlaceCounter], a ld bc, -1 .columnInnerLoop ld a, [de] dec de swap a ; only high nybble contains information call ScalePixelsByTwo - ld a, [H_SPRITEINTERLACECOUNTER] + ldh a, [hSpriteInterlaceCounter] dec a - ld [H_SPRITEINTERLACECOUNTER], a + ldh [hSpriteInterlaceCounter], a jr nz, .columnInnerLoop dec de ; skip last 4 rows of new column dec de @@ -86,7 +86,19 @@ ScalePixelsByTwo: ; repeats each input bit twice DuplicateBitsTable: - db $00, $03, $0c, $0f - db $30, $33, $3c, $3f - db $c0, $c3, $cc, $cf - db $f0, $f3, $fc, $ff + db %00000000 + db %00000011 + db %00001100 + db %00001111 + db %00110000 + db %00110011 + db %00111100 + db %00111111 + db %11000000 + db %11000011 + db %11001100 + db %11001111 + db %11110000 + db %11110011 + db %11111100 + db %11111111 |