我正在用jMonkeyEngine进行测试,并且试图使相机跟随盒子的空间。我在这里遵循官方指示:
http://jmonkeyengine.org/wiki/doku.php/jme3:advanced:making_the_camera_follow_a_character
申请时,我从那里学到了以下代码:
@Override
public void simpleInitApp() {
flyCam.setEnabled(false);
//world objects
Box b = new Box(Vector3f.ZERO, 1, 1, 1);
Geometry geom = new Geometry("Box", b);
Material mat = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
mat.setColor("Color", ColorRGBA.Blue);
geom.setMaterial(mat);
rootNode.attachChild(geom);
//Ship node
shipNode = new Node();
rootNode.attachChild(shipNode);
//Ship
Box shipBase = new Box(new Vector3f(0, -1f, 10f), 5, 0.2f, 5);
Geometry shipGeom = new Geometry("Ship Base", shipBase);
Material shipMat = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
shipMat.setColor("Color", ColorRGBA.Green);
shipGeom.setMaterial(shipMat);
shipNode.attachChild(shipGeom);
//Camera node
cameraNode = new CameraNode("Camera Node", cam);
cameraNode.setControlDir(ControlDirection.CameraToSpatial);
shipNode.attachChild(cameraNode);
initPhysics();
initKeys();
}
调用以下代码时:
@Override
public void simpleUpdate(float tpf) {
//Update ship heading
shipHeading = shipHeading.mult(shipRotationMoment);
shipNode.setLocalRotation(shipHeading);
shipPos = shipPos.add(shipVelocity);
shipNode.setLocalTranslation(shipPos);
}
盒子会像预期的那样移动,但相机会停留在原处。该图应如下所示:
根节点
b(盒)
shipNode
shipBase
cameraNode
因此,摄像头应该已经绑定到shipNode。我想念什么?
最佳答案
通读您提供的教程,看来您可能有错字。你有:
cameraNode.setControlDir(ControlDirection.CameraToSpatial);
但是,该教程具有:
//This mode means that camera copies the movements of the target:
camNode.setControlDir(ControlDirection.SpatialToCamera);
在本教程的下部,它定义了这两个ControlDirection之间的区别。本教程提供的一种是使照相机跟随对象的运动,而您拥有的对象随照相机的运动。
希望这可以帮助。