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package jme3test.bullet;
import com.jme3.app.SimpleApplication;
import com.jme3.bullet.BulletAppState;
import com.jme3.bullet.PhysicsSpace;
import com.jme3.bullet.collision.shapes.*;
import com.jme3.bullet.control.RigidBodyControl;
import com.jme3.bullet.joints.HingeJoint;
import com.jme3.export.binary.BinaryExporter;
import com.jme3.export.binary.BinaryImporter;
import com.jme3.math.Plane;
import com.jme3.math.Vector3f;
import com.jme3.renderer.RenderManager;
import com.jme3.scene.Node;
import com.jme3.scene.shape.Sphere;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* This is a basic Test of jbullet-jme functions
*
* @author normenhansen
*/
public class TestPhysicsReadWrite extends SimpleApplication{
private BulletAppState bulletAppState;
private Node physicsRootNode;
public static void main(String[] args){
TestPhysicsReadWrite app = new TestPhysicsReadWrite();
app.start();
}
@Override
public void simpleInitApp() {
bulletAppState = new BulletAppState();
stateManager.attach(bulletAppState);
bulletAppState.setDebugEnabled(true);
physicsRootNode=new Node("PhysicsRootNode");
rootNode.attachChild(physicsRootNode);
// Add a physics sphere to the world
Node physicsSphere = PhysicsTestHelper.createPhysicsTestNode(assetManager, new SphereCollisionShape(1), 1);
physicsSphere.getControl(RigidBodyControl.class).setPhysicsLocation(new Vector3f(3, 6, 0));
rootNode.attachChild(physicsSphere);
getPhysicsSpace().add(physicsSphere);
// Add a physics sphere to the world using the collision shape from sphere one
Node physicsSphere2 = PhysicsTestHelper.createPhysicsTestNode(assetManager, physicsSphere.getControl(RigidBodyControl.class).getCollisionShape(), 1);
physicsSphere2.getControl(RigidBodyControl.class).setPhysicsLocation(new Vector3f(4, 8, 0));
rootNode.attachChild(physicsSphere2);
getPhysicsSpace().add(physicsSphere2);
// Add a physics box to the world
Node physicsBox = PhysicsTestHelper.createPhysicsTestNode(assetManager, new BoxCollisionShape(new Vector3f(1, 1, 1)), 1);
physicsBox.getControl(RigidBodyControl.class).setFriction(0.1f);
physicsBox.getControl(RigidBodyControl.class).setPhysicsLocation(new Vector3f(.6f, 4, .5f));
rootNode.attachChild(physicsBox);
getPhysicsSpace().add(physicsBox);
// Add a physics cylinder to the world
Node physicsCylinder = PhysicsTestHelper.createPhysicsTestNode(assetManager, new CylinderCollisionShape(new Vector3f(1f, 1f, 1.5f)), 1);
physicsCylinder.getControl(RigidBodyControl.class).setPhysicsLocation(new Vector3f(2, 2, 0));
rootNode.attachChild(physicsCylinder);
getPhysicsSpace().add(physicsCylinder);
// an obstacle mesh, does not move (mass=0)
Node node2 = PhysicsTestHelper.createPhysicsTestNode(assetManager, new MeshCollisionShape(new Sphere(16, 16, 1.2f)), 0);
node2.getControl(RigidBodyControl.class).setPhysicsLocation(new Vector3f(2.5f, -4, 0f));
rootNode.attachChild(node2);
getPhysicsSpace().add(node2);
// the floor mesh, does not move (mass=0)
Node node3 = PhysicsTestHelper.createPhysicsTestNode(assetManager, new PlaneCollisionShape(new Plane(new Vector3f(0, 1, 0), 0)), 0);
node3.getControl(RigidBodyControl.class).setPhysicsLocation(new Vector3f(0f, -6, 0f));
rootNode.attachChild(node3);
getPhysicsSpace().add(node3);
// Join the physics objects with a Point2Point joint
HingeJoint joint=new HingeJoint(physicsSphere.getControl(RigidBodyControl.class), physicsBox.getControl(RigidBodyControl.class), new Vector3f(-2,0,0), new Vector3f(2,0,0), Vector3f.UNIT_Z,Vector3f.UNIT_Z);
getPhysicsSpace().add(joint);
//save and load the physicsRootNode
try {
//remove all physics objects from physics space
getPhysicsSpace().removeAll(physicsRootNode);
physicsRootNode.removeFromParent();
//export to byte array
ByteArrayOutputStream bout=new ByteArrayOutputStream();
BinaryExporter.getInstance().save(physicsRootNode, bout);
//import from byte array
ByteArrayInputStream bin=new ByteArrayInputStream(bout.toByteArray());
BinaryImporter imp=BinaryImporter.getInstance();
imp.setAssetManager(assetManager);
Node newPhysicsRootNode=(Node)imp.load(bin);
//add all physics objects to physics space
getPhysicsSpace().addAll(newPhysicsRootNode);
rootNode.attachChild(newPhysicsRootNode);
} catch (IOException ex) {
Logger.getLogger(TestPhysicsReadWrite.class.getName()).log(Level.SEVERE, null, ex);
}
}
private PhysicsSpace getPhysicsSpace(){
return bulletAppState.getPhysicsSpace();
}
@Override
public void simpleUpdate(float tpf) {
//TODO: add update code
}
@Override
public void simpleRender(RenderManager rm) {
//TODO: add render code
}
}