			const entityMesh = new THREE.Mesh( entityGeometry, entityMaterial );
			entityMesh.matrixAutoUpdate = false;
			scene.add( entityMesh );

			const obstacleGeometry = new THREE.PlaneBufferGeometry( 2, 2, 5, 5 );
			obstacleGeometry.rotateY( Math.PI );
			const obstacleMaterial = new THREE.MeshBasicMaterial( { color: 0x777777, side: THREE.DoubleSide } );

			const obstacleMesh = new THREE.Mesh( obstacleGeometry, obstacleMaterial );
			obstacleMesh.matrixAutoUpdate = false;
			scene.add( obstacleMesh );

		