mirror of https://github.com/pret/pokecrystal.git
39 lines
559 B
NASM
39 lines
559 B
NASM
_LoadOverworldTilemap::
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; From the metatile-based 24x20 map in wSurroundingTiles,
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; load the corresponding 20x18 tiles to wTilemap.
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ld hl, wSurroundingTiles
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ld a, [wPlayerMetatileY]
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and a
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jr z, .top_row
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ld bc, SURROUNDING_WIDTH * 2
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add hl, bc
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.top_row
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ld a, [wPlayerMetatileX]
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and a
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jr z, .left_column
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inc hl
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inc hl
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.left_column
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decoord 0, 0
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ld b, SCREEN_HEIGHT
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.loop
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ld c, SCREEN_WIDTH
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.loop2
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ld a, [hli]
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ld [de], a
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inc de
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dec c
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jr nz, .loop2
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ld a, l
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add METATILE_WIDTH
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ld l, a
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jr nc, .carry
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inc h
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.carry
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dec b
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jr nz, .loop
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ret
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