ref: 6b5be9129cabe72b9f775b02db1bf7e7169153da
dir: /macros/coords.asm/
MACRO validate_coords IF _NARG >= 4 IF \1 >= \3 fail "x coord out of range" ENDC IF \2 >= \4 fail "y coord out of range" ENDC ELSE validate_coords \1, \2, SCREEN_WIDTH, SCREEN_HEIGHT ENDC ENDM DEF hlcoord EQUS "coord hl," DEF bccoord EQUS "coord bc," DEF decoord EQUS "coord de," MACRO coord ; register, x, y[, origin] validate_coords \2, \3 IF _NARG >= 4 ld \1, (\3) * SCREEN_WIDTH + (\2) + \4 ELSE ld \1, (\3) * SCREEN_WIDTH + (\2) + wTileMap ENDC ENDM DEF hlbgcoord EQUS "bgcoord hl," DEF bcbgcoord EQUS "bgcoord bc," DEF debgcoord EQUS "bgcoord de," MACRO bgcoord ; register, x, y[, origin] validate_coords \2, \3, BG_MAP_WIDTH, BG_MAP_HEIGHT IF _NARG >= 4 ld \1, (\3) * BG_MAP_WIDTH + (\2) + \4 ELSE ld \1, (\3) * BG_MAP_WIDTH + (\2) + vBGMap0 ENDC ENDM DEF hlowcoord EQUS "owcoord hl," DEF bcowcoord EQUS "owcoord bc," DEF deowcoord EQUS "owcoord de," MACRO owcoord ; register, x, y, map width ld \1, wOverworldMap + ((\2) + 3) + (((\3) + 3) * ((\4) + (3 * 2))) ENDM MACRO event_displacement ; map width, x blocks, y blocks dw (wOverworldMap + 7 + (\1) + ((\1) + 6) * ((\3) >> 1) + ((\2) >> 1)) db \3, \2 ENDM MACRO dwcoord ; x, y validate_coords \1, \2 IF _NARG >= 3 dw (\2) * SCREEN_WIDTH + (\1) + \3 ELSE dw (\2) * SCREEN_WIDTH + (\1) + wTileMap ENDC ENDM MACRO ldcoord_a ; x, y[, origin] validate_coords \1, \2 IF _NARG >= 3 ld [(\2) * SCREEN_WIDTH + (\1) + \3], a ELSE ld [(\2) * SCREEN_WIDTH + (\1) + wTileMap], a ENDC ENDM MACRO lda_coord ; x, y[, origin] validate_coords \1, \2 IF _NARG >= 3 ld a, [(\2) * SCREEN_WIDTH + (\1) + \3] ELSE ld a, [(\2) * SCREEN_WIDTH + (\1) + wTileMap] ENDC ENDM MACRO dbmapcoord ; x, y db \2, \1 ENDM