Cliff Cave & bits

This fully adds Cliff Cave itself. The rest of the route isn't there, but you can access the cave via the Debug Room, featuring a crudely made cave structure.

I've also modified the Rock Smash wild data to feature some additional Pokemon. The Beach has a 20% Corsola, and Dark Cave has a 20% Phanpy, among other bits. Level scaling has also been applied.

The Cliff Cave music isn't right, I believe...but I don't know what it's actually meant to use, I haven't played HGSS since it was current gen.

data/tilesets/nihon01_collision.asm

@@ -5,14 +5,14 @@
 	tilecoll FLOOR, FLOOR, FLOOR, FLOOR ; 04
 	tilecoll WALL, WALL, WALL, WALL ; 05
 	tilecoll LADDER, LADDER, LADDER, LADDER ; 06
-	tilecoll WHIRLPOOL, BUOY, WATER, BUOY ; 07
-	tilecoll WALL, WALL, WALL, WALL ; 08
-	tilecoll WALL, WALL, WALL, WALL ; 09
+	tilecoll WALL, WALL, WALL, WALL ; 07
+	tilecoll FLOOR, FLOOR, DOOR, WALL ; 08
+	tilecoll FLOOR, FLOOR, WALL, WALL ; 09
 	tilecoll WALL, WALL, WALL, WALL ; 0a
-	tilecoll WARP_CARPET_LEFT, FLOOR, WARP_CARPET_LEFT, FLOOR ; 0b
-	tilecoll FLOOR, FLOOR, WALL, WARP_CARPET_DOWN ; 0c
-	tilecoll FLOOR, FLOOR, WARP_CARPET_DOWN, WALL ; 0d
-	tilecoll FLOOR, WARP_CARPET_RIGHT, FLOOR, WARP_CARPET_RIGHT ; 0e
+	tilecoll WALL, FLOOR, WALL, WALL ; 0b
+	tilecoll FLOOR, WALL, WALL, WALL ; 0c
+	tilecoll FLOOR, WALL, WALL, WALL ; 0d
+	tilecoll WALL, WALL, DOOR, WALL ; 0e
 	tilecoll WALL, WALL, WALL, WALL ; 0f
 	tilecoll WALL, WALL, WALL, WALL ; 10
 	tilecoll WALL, WALL, WALL, WALL ; 11