xref: /external/jmonkeyengine/engine/src/test/jme3test/bullet/TestPhysicsHingeJoint.java

/*
 * Copyright (c) 2009-2010 jMonkeyEngine
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 * modification, are permitted provided that the following conditions are
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 *
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 *   notice, this list of conditions and the following disclaimer.
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 * * Redistributions in binary form must reproduce the above copyright
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 *   may be used to endorse or promote products derived from this software
 *   without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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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.BoxCollisionShape;
import com.jme3.bullet.control.RigidBodyControl;
import com.jme3.bullet.joints.HingeJoint;
import com.jme3.input.KeyInput;
import com.jme3.input.controls.AnalogListener;
import com.jme3.input.controls.KeyTrigger;
import com.jme3.math.Vector3f;
import com.jme3.scene.Node;

public class TestPhysicsHingeJoint extends SimpleApplication implements AnalogListener {
    private BulletAppState bulletAppState;
    private HingeJoint joint;

    public static void main(String[] args) {
        TestPhysicsHingeJoint app = new TestPhysicsHingeJoint();
        app.start();
    }

    private void setupKeys() {
        inputManager.addMapping("Left", new KeyTrigger(KeyInput.KEY_H));
        inputManager.addMapping("Right", new KeyTrigger(KeyInput.KEY_K));
        inputManager.addMapping("Swing", new KeyTrigger(KeyInput.KEY_SPACE));
        inputManager.addListener(this, "Left", "Right", "Swing");
    }

    public void onAnalog(String binding, float value, float tpf) {
        if(binding.equals("Left")){
            joint.enableMotor(true, 1, .1f);
        }
        else if(binding.equals("Right")){
            joint.enableMotor(true, -1, .1f);
        }
        else if(binding.equals("Swing")){
            joint.enableMotor(false, 0, 0);
        }
    }

    @Override
    public void simpleInitApp() {
        bulletAppState = new BulletAppState();
        stateManager.attach(bulletAppState);
        bulletAppState.getPhysicsSpace().enableDebug(assetManager);
        setupKeys();
        setupJoint();
    }

    private PhysicsSpace getPhysicsSpace(){
        return bulletAppState.getPhysicsSpace();
    }

    public void setupJoint() {
        Node holderNode=PhysicsTestHelper.createPhysicsTestNode(assetManager, new BoxCollisionShape(new Vector3f( .1f, .1f, .1f)),0);
        holderNode.getControl(RigidBodyControl.class).setPhysicsLocation(new Vector3f(0f,0,0f));
        rootNode.attachChild(holderNode);
        getPhysicsSpace().add(holderNode);

        Node hammerNode=PhysicsTestHelper.createPhysicsTestNode(assetManager, new BoxCollisionShape(new Vector3f( .3f, .3f, .3f)),1);
        hammerNode.getControl(RigidBodyControl.class).setPhysicsLocation(new Vector3f(0f,-1,0f));
        rootNode.attachChild(hammerNode);
        getPhysicsSpace().add(hammerNode);

        joint=new HingeJoint(holderNode.getControl(RigidBodyControl.class), hammerNode.getControl(RigidBodyControl.class), Vector3f.ZERO, new Vector3f(0f,-1,0f), Vector3f.UNIT_Z, Vector3f.UNIT_Z);
        getPhysicsSpace().add(joint);
    }

    @Override
    public void simpleUpdate(float tpf) {

    }


}