private void addTunnels(){
        addObject(new Tunnel(), 0,0);
        addObject(new Tunnel(), 1,0);
        addObject(new Tunnel(), 2,0);
        addObject(new Tunnel(), 3,0);
        addObject(new Tunnel(), 4,0);
        addObject(new Tunnel(), 5,0);
        addObject(new Tunnel(), 6,0);
        addObject(new Tunnel(), 7,0);
        addObject(new Tunnel(), 8,0);
        addObject(new Tunnel(), 0,8);
        addObject(new Tunnel(), 1,8);
        addObject(new Tunnel(), 2,8);
        addObject(new Tunnel(), 3,8);
        addObject(new Tunnel(), 4,8);
        addObject(new Tunnel(), 5,8);
        addObject(new Tunnel(), 6,8);
        addObject(new Tunnel(), 7,8);
        addObject(new Tunnel(), 8,8);
    }