56 lines
1013 B
NASM
56 lines
1013 B
NASM
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IF !DEF(FIELD_ASM)
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DEF FIELD_ASM EQU 1
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SECTION "Field Variables", WRAM0
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wField:: ds (10*21)
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SECTION "Field Functions", ROM0
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FieldInit::
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ld hl, wField
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ld bc, 10*21
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ld d, TILE_FIELD_EMPTY
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call UnsafeMemSet
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ret
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BlitField::
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; The first 14 rows can be blitted without checking for vram access.
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ld de, wField + (1*10)
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DEF row = 0
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REPT 14
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ld hl, FIELD_TOP_LEFT+(32*row)
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REPT 10
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ld a, [de]
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ld [hl+], a
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inc de
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ENDR
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DEF row += 1
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ENDR
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; The last 6 rows need some care.
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REPT 6
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ld hl, FIELD_TOP_LEFT+(32*row)
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REPT 2
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: ldh a, [rSTAT]
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and STATF_LCD
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cp STATF_HBL
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jr z, :-
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: ldh a, [rSTAT]
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and STATF_LCD
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cp STATF_HBL
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jr nz, :-
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REPT 5
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ld a, [de]
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ld [hl+], a
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inc de
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ENDR
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ENDR
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DEF row += 1
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ENDR
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ret
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ENDC
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