Coordinate macros all have similar structure

This commit is contained in:
Remy Oukaour 2017-12-29 16:05:33 -05:00
parent ab823e2b54
commit 2acc7f378a

View File

@ -1,51 +1,55 @@
screenrows EQUS "* SCREEN_WIDTH"
bgrows EQUS "* BG_MAP_WIDTH"
hlcoord EQUS "coord hl,"
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)
ld \1, (\3) screenrows + (\2) + TileMap
else
ld \1, \4 + SCREEN_WIDTH * (\3) + (\2)
ld \1, (\3) screenrows + (\2) + \4
endc
ENDM
hlbgcoord EQUS "bgcoord hl,"
bcbgcoord EQUS "bgcoord bc,"
debgcoord EQUS "bgcoord de,"
bgcoord: MACRO
; register, x, y[, origin]
if _NARG < 4
ld \1, (\3) bgrows + (\2) + vBGMap0
else
ld \1, (\3) bgrows + (\2) + \4
endc
ENDM
dwcoord: MACRO
; x, y
rept _NARG / 2
dw TileMap + SCREEN_WIDTH * (\2) + (\1)
dw (\2) screenrows + (\1) + TileMap
shift
shift
endr
ENDM
ldcoord_a: MACRO
; x, y[, origin]
if _NARG < 3
ld [TileMap + SCREEN_WIDTH * (\2) + (\1)], a
ld [(\2) screenrows + (\1) + TileMap], a
else
ld [\3 + SCREEN_WIDTH * (\2) + (\1)], a
ld [(\2) screenrows + (\1) + \3], a
endc
ENDM
lda_coord: MACRO
; x, y[, origin]
if _NARG < 3
ld a, [TileMap + SCREEN_WIDTH * (\2) + (\1)]
ld a, [(\2) screenrows + (\1) + TileMap]
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
ld a, [(\2) screenrows + (\1) + \3]
endc
ENDM