MACRO newgroup
;\1: group id
	const_skip
	DEF MAPGROUP_\1 EQU const_value
	DEF CURRENT_NUM_MAPGROUP_MAPS EQUS "NUM_\1_MAPS"
	DEF __map_value__ = 1
ENDM

MACRO map_const
;\1: map id
;\2: width: in blocks
;\3: height: in blocks
	DEF GROUP_\1 EQU const_value
	DEF MAP_\1 EQU __map_value__
	DEF __map_value__ += 1
	DEF \1_WIDTH EQU \2
	DEF \1_HEIGHT EQU \3
ENDM

MACRO endgroup
	DEF {CURRENT_NUM_MAPGROUP_MAPS} EQU __map_value__ - 1
	PURGE CURRENT_NUM_MAPGROUP_MAPS
ENDM

; map group ids
; `newgroup` indexes are for:
; - MapGroupPointers (see data/maps/maps.asm)
; - MapGroupRoofs (see data/maps/roofs.asm)
; - OutdoorSprites (see data/maps/outdoor_sprites.asm)
; - RoofPals (see gfx/tilesets/roofs.pal)
; `map_const` indexes are for the sub-tables of MapGroupPointers (see data/maps/maps.asm)
; Each map also has associated data:
; - attributes (see data/maps/attributes.asm)
; - blocks (see data/maps/blocks.asm)
; - scripts and events (see data/maps/scripts.asm)
	const_def

	newgroup LEVEL_1                                              ;  1
	map_const LEVEL_1_MAP_1,                                5,  4 ;  1
;	map_const LEVEL_1_MAP_2,                                5,  8 ;  2
	endgroup

;	newgroup LEVEL_2                                              ;  2
;	map_const LEVEL_2_MAP_1,                                4,  4 ;  1
;	endgroup

DEF NUM_MAP_GROUPS EQU const_value