I’m doing a game based in Arkanoid but in 3D. The problem is that whan the ball colisions with some box disappear but its collision physics no(the ball continuos collisions in the place where the box disappeared). This is the code:
[java]/*
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*/
package balltingo;
import com.jme3.app.SimpleApplication;
import com.jme3.bullet.BulletAppState;
import com.jme3.bullet.collision.shapes.CollisionShape;
import com.jme3.bullet.control.RigidBodyControl;
import com.jme3.bullet.util.CollisionShapeFactory;
import com.jme3.collision.CollisionResult;
import com.jme3.collision.CollisionResults;
import com.jme3.input.controls.ActionListener;
import com.jme3.math.Vector3f;
import com.jme3.scene.Spatial;
import com.jme3.input.KeyInput;
import com.jme3.input.controls.KeyTrigger;
import com.jme3.math.Ray;
import com.jme3.scene.Node;
import com.jme3.scene.control.Control;
import com.sun.org.apache.bcel.internal.classfile.Code;
/**
*
-
@author dominuskernel
*/
public class StageOne extends SimpleApplication{
private Node boxNode;
private Spatial scene, bar, ball, box[][];
private BulletAppState bulletAppState;
private RigidBodyControl landscape, bar_phy, ball_phy, box_phy;
private CollisionShape barShape, boxShape;
private boolean left = false, right = false, begin=false;public static void main(String[] args){
StageOne app = new StageOne();
app.start();
}@Override
public void simpleInitApp(){
//the camera doesn’t move
flyCam.setEnabled(false);
//flyCam.setMoveSpeed(50);//call the class for collisions bulletAppState = new BulletAppState(); stateManager.attach(bulletAppState); bulletAppState.getPhysicsSpace().enableDebug(assetManager); //set camera location cam.setLocation(new Vector3f(-10f, 28f, 0f)); //the camera look at direction cam.lookAt(new Vector3f(0f, 16.5f, 0f), Vector3f.UNIT_Y); //Declare scene and models and set location for bar, ball and the boxes scene = assetManager.loadModel("Scenes/stage1/balltingo.j3o"); scene.setLocalTranslation(0, 0, 1f); bar = assetManager.loadModel("Models/barra/barra.j3o"); bar.setLocalScale(2f); bar.setLocalTranslation(-10f, 6.5f, 0f); ball = assetManager.loadModel("Models/bola/ball.j3o"); ball.setLocalTranslation(0f, 8f, 0f); ball.setLocalScale(0.5f); //set the collision scene and barra model CollisionShape sceneShape = CollisionShapeFactory.createMeshShape((Node)scene); landscape = new RigidBodyControl(sceneShape,0f); scene.addControl(landscape); bulletAppState.getPhysicsSpace().add(landscape); barShape = CollisionShapeFactory.createDynamicMeshShape((Node)bar); bar_phy = new RigidBodyControl(barShape,0f); bar_phy.setPhysicsLocation(new Vector3f(-10f, 6.5f, 0f)); bar_phy.setKinematic(true); bar.addControl(bar_phy); bulletAppState.getPhysicsSpace().add(bar); ball_phy = new RigidBodyControl(1f); ball.addControl(ball_phy); bulletAppState.getPhysicsSpace().add(ball); bulletAppState.getPhysicsSpace().addCollisionObject(ball_phy); ball_phy.setCollisionGroup(0); //declare boxNode boxNode = new Node("Boxes"); //attach stage rootNode.attachChild(scene); rootNode.attachChild(bar); rootNode.attachChild(ball); rootNode.attachChild(boxNode); //declare and attach every box box= new Spatial[3][9]; float x = 0; float z = 0; for(int f=0;f<box.length;f++){ for(int c=0;c<box[f].length; c++){ box[f][c] = assetManager.loadModel("Models/box/box.j3o"); box[f][c].setLocalScale(0.5f); box[f][c].setLocalTranslation(22f-x,6.5f,-8.2f+z); boxShape = CollisionShapeFactory.createBoxShape((Node)box[f][c]); box_phy = new RigidBodyControl(boxShape,0f); box[f][c].addControl(box_phy); bulletAppState.getPhysicsSpace().add(box[f][c]); bulletAppState.getPhysicsSpace().addCollisionObject(box_phy); z = z + 2f; boxNode.attachChild(box[f][c]); } z = 0f; x = x + 4f; } //call to setUpKeys method box_phy.setCollisionGroup(1); setUpKeys();}
//set the controls key for barra
public void setUpKeys(){
inputManager.addMapping(“Left”, new KeyTrigger(KeyInput.KEY_A));
inputManager.addMapping(“Right”, new KeyTrigger(KeyInput.KEY_D));
inputManager.addMapping(“Shoot”, new KeyTrigger(KeyInput.KEY_SPACE));
inputManager.addListener(actionListener,“Left”,“Right”,“Shoot”);
}private ActionListener actionListener = new ActionListener() {
public void onAction(String binding, boolean keyPressed, float tpf) {
if(binding.equals(“Left”)){
left = keyPressed;
} else if(binding.equals(“Right”)){
right = keyPressed;
} else if(binding.equals(“Shoot”)){
shootBall();
begin = true;
}
}
};//set the ball shoot
public void shootBall(){
ball_phy.setLinearVelocity(Vector3f.UNIT_X.mult(0.1f));
}//when the ball collisions with some box. The box disappear.
//This method is call in simpleUpdate
public void collisionToBox(){
CollisionResults results = new CollisionResults();
boxNode.collideWith(ball.getWorldBound(), results);
if(results.size()>0){
CollisionResult closest = results.getClosestCollision();
Spatial s = closest.getGeometry();
if(s.getName().equals(“Box”)){
s= s.getParent();
System.out.println(s.getName());
s.removeControl(box_phy);
s.removeFromParent();
}
}
}
//set the actions
@Override
public void simpleUpdate(float tpf){
if(left && bar.getLocalTranslation().z >= -8.5){
bar.move(0,0,-20tpf);
}
if(right && bar.getLocalTranslation().z <= 8.5){
bar.move(0,0,20tpf);
}float velocity = ball_phy.getLinearVelocity().getX(); if(begin==true){ if(velocity >=0){ ball_phy.applyForce(new Vector3f(10f,0,0), Vector3f.ZERO); ball_phy.setLinearVelocity(ball_phy.getLinearVelocity().mult(new Vector3f(1f,0f,1f))); }else{ ball_phy.applyForce(new Vector3f(-10f,0,0),Vector3f.ZERO); ball_phy.setLinearVelocity(ball_phy.getLinearVelocity().mult(new Vector3f(1f,0f,1f))); } collisionToBox(); }}
}
[/java]
These images explain better what happen:
