BIG changes to postgame island

- Properly adds Brunswick Grotto, as well as Celeste Hill Outside and Celeste Hill Cave
- Citrine City received a minor redesign, putting the path to Brunswick Trail more to the west
- Added complete event for Galarian Zapdos as well as an encounterable, but unfinished Galarian Moltres, so all 3 birds can currently be caught

data/tilesets/collision_tile_ids.asm

@@ -74,7 +74,7 @@ Citrine_Coll::
 	coll_tiles $2C, $31, $3F, $55, $0E, $2F, $23, $20, $10, $03, $1C, $1B, $0B, $0C, $21, $39, $3C, $48, $49, $58, $59
 
 Celeste_Coll::
-	coll_tiles $1e, $20, $2e, $30, $34, $37, $39, $3a, $40, $51, $52, $5a, $5c, $5e, $5f, $09, $08, $18, $19
+	coll_tiles $1e, $20, $2e, $30, $34, $37, $39, $3a, $40, $51, $52, $5a, $5c, $5e, $5f, $09, $08, $18, $19, $0c, $1c
 
 RocketHouse_Coll::
 	coll_tiles $13, $31, $01, $53

data/tilesets/door_tile_ids.asm

@@ -14,6 +14,7 @@ DoorTileIDPointers:
 	dbw PLATEAU,     .PlateauDoorTileIDs
 	dbw INTERIOR,    .InteriorDoorTileIDs ; fixes weirdness in silph co.
 	dbw CITRINE, 	 .CitrineDoorTileIDs
+	dbw CELESTE, 	 .CelesteDoorTileIDs
 	db -1 ; end
 
 MACRO door_tiles
@@ -61,3 +62,7 @@ ENDM
 
 .CitrineDoorTileIDs
 	door_tiles $1C, $1B, $58, $59
+
+.CelesteDoorTileIDs
+	door_tiles $0C, $1C
+

data/tilesets/dungeon_tilesets.asm

@@ -10,5 +10,6 @@ DungeonTilesets:
 	db FACILITY
 	db CEMETERY
 	db GYM
+	db CELESTE
 	db ROCKETHOUSE
 	db -1 ; end

data/tilesets/escape_rope_tilesets.asm

@@ -4,4 +4,5 @@ EscapeRopeTilesets:
 	db CAVERN
 	db FACILITY
 	db INTERIOR
+	db CELESTE
 	db -1 ; end

data/tilesets/tileset_headers.asm

@@ -33,9 +33,9 @@ Tilesets:
 	tileset Club,        $07,$17, -1,  -1, TILEANIM_NONE
 	tileset Facility,    $12, -1, -1,  -1, TILEANIM_WATER
 	tileset Plateau,      -1, -1, -1, $45, TILEANIM_WATER
-	tileset PreGym,		 $3A, $3B, -1,  -1, TILEANIM_NONE
-	tileset Citrine,	 -1,  -1,  -1, $3F, TILEANIM_WATER_FLOWER
-	tileset Celeste,	 -1,  -1,  -1, $18, TILEANIM_WATER_FLOWER
-	tileset RocketHouse, $0A,  -1,  -1, -1, TILEANIM_NONE
+	tileset PreGym,	     $3A, $3B, -1, -1, TILEANIM_NONE
+	tileset Citrine,      -1, -1, -1, $3F, TILEANIM_WATER_FLOWER
+	tileset Celeste,      -1, -1, -1, $18, TILEANIM_WATER
+	tileset RocketHouse, $0A, -1, -1,  -1, TILEANIM_NONE
 	tileset BetaMart,    $18, -1, -1,  -1, TILEANIM_NONE
 	assert_table_length NUM_TILESETS