Proof of concept with OH3 obstacles

lib/constants/EntityIdentifiers.h

@@ -457,7 +457,46 @@ public:
 		WHIRLPOOL = 111,
 		WINDMILL = 112,
 		WITCH_HUT = 113,
+		BRUSH = 114, // TODO: How does it look like?
+		BUSH = 115,
+		CACTUS = 116,
+		CANYON = 117,
+		CRATER = 118,
+		DEAD_VEGETATION = 119,
+		FLOWERS = 120,
+		FROZEN_LAKE = 121,
+		HEDGE = 122,
+		HILL = 123,
 		HOLE = 124,
+		KELP = 125,
+		LAKE = 126,
+		LAVA_FLOW = 127,
+		LAVA_LAKE = 128,
+		MUSHROOMS = 129,
+		LOG = 130,
+		MANDRAKE = 131,
+		MOSS = 132,
+		MOUND = 133,
+		MOUNTAIN = 134,
+		OAK_TREES = 135,
+		OUTCROPPING = 136,
+		PINE_TREES = 137,
+		PLANT = 138,
+		ROCK = 147,
+		SAND_DUNE = 148,
+		SAND_PIT = 149,
+		SHRUB = 150,
+		SKULL = 151,
+		STALAGMITE = 152,
+		STUMP = 153,
+		TAR_PIT = 154,
+		TREES = 155,
+		VINE = 156,
+		VOLCANIC_VENT = 157,
+		VOLCANO = 158,
+		WILLOW_TREES = 159,
+		YUCCA_TREES = 160,
+		REEF = 161,
 		RANDOM_MONSTER_L5 = 162,
 		RANDOM_MONSTER_L6 = 163,
 		RANDOM_MONSTER_L7 = 164,