public void applyBridgeMode(int x, int y) {
		Ground tile = groundArray[0][x][y];
		for (int z = 0; z < 3; z++) {
			Ground _tile = groundArray[z][x][y] = groundArray[z + 1][x][y];
			if (_tile != null) {
				_tile.z--;
				for (int e = 0; e < _tile.entityCount; e++) {
					InteractiveObject entity = _tile.interactiveObjects[e];
					if ((entity.uid >> 29 & 3) == 2 && entity.tileLeft == x
							&& entity.tileTop == y)
						entity.z--;
				}

			}
		}
		if (groundArray[0][x][y] == null)
			groundArray[0][x][y] = new Ground(0, x, y);
		groundArray[0][x][y].tileBelow = tile;
		groundArray[3][x][y] = null;
	}