public GameMatter findObject(int x, int y){
		//search floor Surface for object
		GameMatter found = floor.findObject(x,y);
		if (found == null){
			found = ceiling.findObject(x,y);
			if (found == null){
				//if no object found we will try the back wall
				found = back.findObject(x,y);
				if (found == null){
					//if no object found we will try the side walls
					found = left.findObject(x,y);
					if (found == null){
						//if no object found we will try the back wall
						found = right.findObject(x,y);
					}
				}
			}
		}
		return found;
	}