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bccoord equs "coord bc,"
decoord equs "coord de,"
hlcoord equs "coord hl,"
coord: MACRO
; register, x, y[, origin]
if _NARG < 4
ld \1, TileMap + SCREEN_WIDTH * (\3) + (\2)
else
ld \1, \4 + SCREEN_WIDTH * (\3) + (\2)
endc
ENDM
dwcoord: MACRO
rept _NARG / 2
dw TileMap + SCREEN_WIDTH * (\2) + (\1)
shift
shift
endr
ENDM
ldcoord_a: MACRO
if _NARG < 3
ld [TileMap + SCREEN_WIDTH * (\2) + (\1)], a
else
ld [\3 + SCREEN_WIDTH * (\2) + (\1)], a
endc
ENDM
lda_coord: MACRO
if _NARG < 3
ld a, [TileMap + SCREEN_WIDTH * (\2) + (\1)]
else
ld a, [\3 + SCREEN_WIDTH * (\2) + (\1)]
endc
ENDM
bgrows EQUS "* $20" ; SCREEN_WIDTH
hlbgcoord EQUS "bgcoord hl,"
debgcoord EQUS "bgcoord de,"
bcbgcoord EQUS "bgcoord bc,"
bgcoord: MACRO
IF _NARG >= 4
ld \1, \3 bgrows + \2 + \4
ELSE
ld \1, \3 bgrows + \2 + VBGMap0
ENDC
ENDM
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