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-rw-r--r--data/maps/outdoor_sprites.asm1
-rw-r--r--data/maps/roofs.asm3
2 files changed, 3 insertions, 1 deletions
diff --git a/data/maps/outdoor_sprites.asm b/data/maps/outdoor_sprites.asm
index 8064a63e9..c7e30114a 100644
--- a/data/maps/outdoor_sprites.asm
+++ b/data/maps/outdoor_sprites.asm
@@ -2,6 +2,7 @@
; Maps with environment ROUTE or TOWN can only use these sprites.
OutdoorSprites: ; 144b8
+; entries correspond to map groups
dw OlivineGroupSprites
dw MahoganyGroupSprites
dw DungeonsGroupSprites
diff --git a/data/maps/roofs.asm b/data/maps/roofs.asm
index 8c79e6f82..2a1b8d3eb 100644
--- a/data/maps/roofs.asm
+++ b/data/maps/roofs.asm
@@ -1,5 +1,6 @@
MapGroupRoofs: ; 1c021i
-; entries correspond to Roofs (see below)
+; entries correspond to map groups
+; values are indexes for Roofs (see below)
db -1 ; group 0 (unused)
db 3 ; group 1 (Olivine)
db 2 ; group 2 (Mahogany)