我是 Jmonkey 编程的新手，我想问一个关于碰撞交互的问题，因为我的代码似乎发现了可能来自地形的碰撞，我不知道如何解决这个问题。我的目标是玩家作为第一个被检测到的人，如果他与敌人的幽灵控件发生碰撞以显示消息作为输出。我的代码显示一个持续的碰撞，然后它崩溃了......
package test;
//imports...
public class test extends SimpleApplication
implements ActionListener,PhysicsTickListener{
private MotionPath path;
private MotionPath path2;
private MotionTrack motionTrack;
private MotionTrack motionTrack2;
private AnimChannel channel2;
private AnimControl control2;
private AnimControl control3;
private AnimChannel channel3;
private BulletAppState bulletAppState;
private RigidBodyControl landscape;
private CharacterControl player;
private Vector3f walkDirection = new Vector3f();
private boolean left = false, right = false, up = false, down = false;
private TerrainQuad terrain;
private Material mat_terrain;
private GhostControl ghost;
static test app;
Material matMarker;
public static void main(String[] args) {
app = new test();
app.start();
}
float displacement=60;
int score = 0;
int robotHealth=0;
Geometry mark;
Node shootables;
Node pickUpObject1;
BitmapText hudText;
@Override
public void simpleInitApp() {
createScene();
enemies();
pickUptype1();
initCrossHairs(); // a "+" in the middle of the screen to help aiming
initKeys(); // load custom key mappings
initMark(); // a red sphere to mark the hit
hudText = new BitmapText(guiFont, false);
hudText.setSize(guiFont.getCharSet().getRenderedSize()); // font size
hudText.setColor(ColorRGBA.Red); // font color
hudText.setLocalTranslation(600, 700, 0); // position
guiNode.attachChild(hudText);
DirectionalLight sun2 = new DirectionalLight();
sun2.setDirection(new Vector3f(-0.1f, -0.7f, -1.0f));
int width = settings.getWidth(); //width is the width of the gui
int height = settings.getHeight(); //height is the height of the gui
}
protected Geometry makeCube(String name, float x, float y, float z) {
Box box = new Box(new Vector3f(x, y, z), 3f, 3f, 3f);
Geometry cube = new Geometry(name, box);
Material mat1 = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
Texture tex_ml = assetManager.loadTexture("Interface/Logo/Monkey.jpg");
mat1.setTexture("ColorMap", tex_ml);
cube.setMaterial(mat1);
return cube;
}
private PhysicsSpace getPhysicsSpace() {
return bulletAppState.getPhysicsSpace();
}
/**
* This is the main event loop--walking happens here.
* We check in which direction the player is walking by interpreting
* the camera direction forward (camDir) and to the side (camLeft).
* The setWalkDirection() command is what lets a physics-controlled player walk.
* We also make sure here that the camera moves with player.
*/
@Override
public void simpleUpdate(float tpf) {
hudText.setText("SCORE \n" + " " + score);// the text
Vector3f camDir = cam.getDirection().clone().multLocal(0.6f);
Vector3f camLeft = cam.getLeft().clone().multLocal(0.4f);
walkDirection.set(0, 0, 0);
if (left) { walkDirection.addLocal(camLeft); }
if (right) { walkDirection.addLocal(camLeft.negate()); }
if (up) { walkDirection.addLocal(camDir); }
if (down) { walkDirection.addLocal(camDir.negate()); }
player.setWalkDirection(walkDirection);
cam.setLocation(player.getPhysicsLocation());
path.setCycle(true); // Make path a complete circuit
path2.setCycle(true);
motionTrack.setLoopMode(LoopMode.Loop);
motionTrack2.setLoopMode(LoopMode.Loop);
}
public Node robot(){
Node monster = (Node) assetManager.loadModel("Models/Oto/Oto.mesh.xml");
monster.scale(1.5f, 1.5f, 1.5f);
monster.rotate(0.0f, -3.0f, 0.0f);
// Create a appropriate physical shape for it
return monster;
}
public void createScene(){
/** Set up Physics */
bulletAppState = new BulletAppState();
stateManager.attach(bulletAppState);
//bulletAppState.getPhysicsSpace().enableDebug(assetManager);
flyCam.setMoveSpeed(100);
setUpKeys();
terrain = new TerrainQuad("my terrain", 65, 513, heightmap.getHeightMap());
/** 6. Add physics: */
// We set up collision detection for the scene by creating a
// compound collision shape and a static RigidBodyControl with mass zero.*/
CollisionShape terrainShape =
CollisionShapeFactory.createMeshShape((Node) terrain);
landscape = new RigidBodyControl(terrainShape, 0);
terrain.addControl(landscape);
CapsuleCollisionShape capsuleShape = new CapsuleCollisionShape(1.5f, 6f, 1);
player = new CharacterControl(capsuleShape, 0.05f);
player.setJumpSpeed(20);
player.setFallSpeed(30);
player.setGravity(30);
player.setPhysicsLocation(new Vector3f(145f, -28f, 10f));
player.setCollisionGroup(PhysicsCollisionObject.COLLISION_GROUP_01);
player.addCollideWithGroup(PhysicsCollisionObject.COLLISION_GROUP_01);
setUpLight();
rootNode.attachChild(SkyFactory.createSky( assetManager,
"Textures/Sky/Bright/BrightSky.dds", false));
}
public void enemies(){
shootables = new Node("Shootables");
rootNode.attachChild(shootables);
Node Robot1 = robot();
Node Robot2 = robot();
CapsuleCollisionShape capsule = new CapsuleCollisionShape(4f, 10f);
RigidBodyControl robot1Cap = new RigidBodyControl(capsule, 0.01f);
Robot1.addControl(robot1Cap);
getPhysicsSpace().add(robot1Cap);
bulletAppState.getPhysicsSpace().add(robot1Cap);
bulletAppState.getPhysicsSpace().enableDebug(assetManager);
robot1Cap.setMass(100f);
robot1Cap.setKinematic(true);
CapsuleCollisionShape capsule2 = new CapsuleCollisionShape(4f, 10f);
RigidBodyControl robot2Cap = new RigidBodyControl(capsule, 0.01f);
Robot2.addControl(robot2Cap);
getPhysicsSpace().add(robot2Cap);
bulletAppState.getPhysicsSpace().add(robot2Cap);
bulletAppState.getPhysicsSpace().enableDebug(assetManager);
robot2Cap.setMass(100f);
robot2Cap.setKinematic(true);
ghost = new GhostControl(
new BoxCollisionShape(new Vector3f(8f,8f,8f))); // a box-shaped ghost
Robot1.addControl(ghost);
ghost.setCollisionGroup(PhysicsCollisionObject.COLLISION_GROUP_01);
ghost.setCollideWithGroups(PhysicsCollisionObject.COLLISION_GROUP_01);
getPhysicsSpace().add(ghost);
getPhysicsSpace().addTickListener(this);
control2 = Robot1.getControl(AnimControl.class);
channel2 = control2.createChannel();
channel2.setAnim("Walk");
control3 = Robot2.getControl(AnimControl.class);
channel3 = control3.createChannel();
channel3.setAnim("Walk");
path = new MotionPath();
path.addWayPoint(new Vector3f(500f,-83f,3f));
path.addWayPoint(new Vector3f(350f,-79f, 3f));
path.enableDebugShape(assetManager,rootNode);
// Initialize our motionTrack object
motionTrack = new MotionTrack(Robot1, path);
motionTrack.setDirectionType(MotionTrack.Direction.Path);
// Enable the motionTrack
motionTrack.setEnabled(true);
path2 = new MotionPath();
path2.addWayPoint(new Vector3f(180f,-50f,-100f));
path2.addWayPoint(new Vector3f(200f, -55f, -30f));
path2.enableDebugShape(assetManager,rootNode);
// Initialize our motionTrack object
motionTrack2 = new MotionTrack(Robot2, path2);
motionTrack2.setDirectionType(MotionTrack.Direction.Path);
// Enable the motionTrack
motionTrack2.setEnabled(true);
shootables.attachChild(Robot1);
shootables.attachChild(Robot2);
}
public void physicsTick(PhysicsSpace space, float f) {
if (ghost.getOverlappingObjects().size() > 0) {
final Vector3f bPoint = ghost.getPhysicsLocation();
try {
app.enqueue(new Callable<Boolean>() {
public Boolean call() throws Exception {
app.addMarker(bPoint);
return true;
}
});
} catch (Exception ex) {
}
}
}
public void pickUptype1(){
pickUpObject1 = new Node("pickUpObject1");
rootNode.attachChild(pickUpObject1);
Node cube1 = new Node();
cube1.attachChild(makeCube("the Deputy", 220f, -63f, -150f));
Node cube2 = new Node();
cube2.attachChild(makeCube("the Deputy2", 410f, -89f, -270f));
RigidBodyControl floor_phy = new RigidBodyControl(0.0f);
cube1.addControl(floor_phy);
RigidBodyControl floor_phy2 = new RigidBodyControl(0.0f);
cube2.addControl(floor_phy2);
bulletAppState.getPhysicsSpace().add(floor_phy);
bulletAppState.getPhysicsSpace().add(floor_phy2);
pickUpObject1.attachChild(cube1);
pickUpObject1.attachChild(cube2);
}
}