ref: 2d644f5077fa9ec43009ea5ec072e6ade9a1f61b
dir: /data/mapgroup_roofs.asm/
; valid roofs: 0, 1, 2, 3, 4; -1 for none db -1 ; group 0 (unused) db 3 ; group 1 (Olivine) db 2 ; group 2 (Mahogany) db -1 ; group 3 db 1 ; group 4 (Ecruteak) db 2 ; group 5 (Blackthorn) db -1 ; group 6 db -1 ; group 7 db 2 ; group 8 (Azalea) db 2 ; group 9 (Lake of Rage) db 1 ; group 10 (Violet) db 4 ; group 11 (Goldenrod) db -1 ; group 12 db -1 ; group 13 db -1 ; group 14 db -1 ; group 15 db -1 ; group 16 db -1 ; group 17 db -1 ; group 18 db 0 ; group 19 (Silver Cave) db -1 ; group 20 db -1 ; group 21 db 3 ; group 22 (Cianwood) db -1 ; group 23 db 0 ; group 24 (New Bark) db -1 ; group 25 db 0 ; group 26 (Cherrygrove)