/**
* Initialises and sets up the camera. This should be called as soon as possible
*
* @param root The node to attach the camera to
* @param physics The physics of the physics engine
* @param cam The camera that we are going to position here
*/
public void loadCamera(Node root, PhysicsSpace physics, Camera cam) {
// Create a node that is at the origin
centralNode = new Node(nodeName);
// Create a physics control, that we can move the node with
centralNodeControl = new RigidBodyControl(1);
// Add the control
centralNode.addControl(centralNodeControl);
// Set up camera
CameraNode camNode = new CameraNode("cam", cam);
// The node moves the camera, instead of the camera moving the node
camNode.setControlDir(CameraControl.ControlDirection.SpatialToCamera);
// Move it back and up a bit
camNode.setLocalTranslation(new Vector3f(0, -10, 20));
// camNode.setLocalTranslation(new Vector3f(0, -10, 50));
// Look at the origin
camNode.lookAt(centralNode.getLocalTranslation(), Vector3f.UNIT_Z);
// Attach the camera to the node at the origin, so that the camera
// follows the node
centralNode.attachChild(camNode);
// Plane that stays at the top of the screen to stop the ball rolling
// out of sight
Plane upperPlane = new Plane(Vector3f.UNIT_Y.negate(), -11f);
RigidBodyControl upperCollision = new RigidBodyControl(new PlaneCollisionShape(upperPlane), 1f);
Node upperPlaneNode = new Node("uplane");
upperPlaneNode.addControl(upperCollision);
// And another plane for bottom of the screen
Plane lowerPlane = new Plane(Vector3f.UNIT_Y, -19f);
RigidBodyControl lowerCollision = new RigidBodyControl(new PlaneCollisionShape(lowerPlane), 1f);
Node lowerPlaneNode = new Node("lplane");
lowerPlaneNode.addControl(lowerCollision);
// Put the planes into their own group so that boxes do not collide with them
upperCollision.setCollisionGroup(PhysicsCollisionObject.COLLISION_GROUP_02);
lowerCollision.setCollisionGroup(PhysicsCollisionObject.COLLISION_GROUP_02);
// Makes the planes un-affected by forces
upperCollision.setKinematic(true);
lowerCollision.setKinematic(true);
// Attach the planes to the central point that the camera looks at
// That way we can move them both by moving the central point.
centralNode.attachChild(upperPlaneNode);
centralNode.attachChild(lowerPlaneNode);
// Add some lighting
PointLight light = new PointLight();
light.setColor(ColorRGBA.White);
// light.setRadius(30);
LightControl lightControl = new LightControl(light);
// Needs to be added to the camera, as a point in space
camNode.addControl(lightControl);
// And added to the root, to have an effect on everything
root.addLight(light);
// Finally, add the centre point to the root node
root.attachChild(centralNode);
// And add the planes and the centre point to the physics space
physics.add(upperPlaneNode);
physics.add(lowerPlaneNode);
physics.add(centralNode);
centralNodeControl.setGravity(Vector3f.ZERO); // No gravity
centralNodeControl.setLinearVelocity(Vector3f.UNIT_Y); // Moves forward
}
@SuppressWarnings(value = "unused")
public void setCamera(final Camera camera) {
final CameraNode cameraNode = new CameraNode("CameraNode", camera);
cameraNode.setControlDir(CameraControl.ControlDirection.SpatialToCamera);
this.head.attachChild(cameraNode);
}
