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      1 /*
      2  * Copyright (c) 2009-2010 jMonkeyEngine
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions are
      7  * met:
      8  *
      9  * * Redistributions of source code must retain the above copyright
     10  *   notice, this list of conditions and the following disclaimer.
     11  *
     12  * * Redistributions in binary form must reproduce the above copyright
     13  *   notice, this list of conditions and the following disclaimer in the
     14  *   documentation and/or other materials provided with the distribution.
     15  *
     16  * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
     17  *   may be used to endorse or promote products derived from this software
     18  *   without specific prior written permission.
     19  *
     20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     23  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     24  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     27  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
     28  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     29  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     30  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 package jme3test.bullet;
     34 
     35 import com.jme3.app.SimpleApplication;
     36 import com.jme3.bullet.BulletAppState;
     37 import com.jme3.bullet.PhysicsSpace;
     38 import com.jme3.bullet.collision.shapes.BoxCollisionShape;
     39 import com.jme3.bullet.control.RigidBodyControl;
     40 import com.jme3.bullet.joints.HingeJoint;
     41 import com.jme3.input.KeyInput;
     42 import com.jme3.input.controls.AnalogListener;
     43 import com.jme3.input.controls.KeyTrigger;
     44 import com.jme3.math.Vector3f;
     45 import com.jme3.scene.Node;
     46 
     47 public class TestPhysicsHingeJoint extends SimpleApplication implements AnalogListener {
     48     private BulletAppState bulletAppState;
     49     private HingeJoint joint;
     50 
     51     public static void main(String[] args) {
     52         TestPhysicsHingeJoint app = new TestPhysicsHingeJoint();
     53         app.start();
     54     }
     55 
     56     private void setupKeys() {
     57         inputManager.addMapping("Left", new KeyTrigger(KeyInput.KEY_H));
     58         inputManager.addMapping("Right", new KeyTrigger(KeyInput.KEY_K));
     59         inputManager.addMapping("Swing", new KeyTrigger(KeyInput.KEY_SPACE));
     60         inputManager.addListener(this, "Left", "Right", "Swing");
     61     }
     62 
     63     public void onAnalog(String binding, float value, float tpf) {
     64         if(binding.equals("Left")){
     65             joint.enableMotor(true, 1, .1f);
     66         }
     67         else if(binding.equals("Right")){
     68             joint.enableMotor(true, -1, .1f);
     69         }
     70         else if(binding.equals("Swing")){
     71             joint.enableMotor(false, 0, 0);
     72         }
     73     }
     74 
     75     @Override
     76     public void simpleInitApp() {
     77         bulletAppState = new BulletAppState();
     78         stateManager.attach(bulletAppState);
     79         bulletAppState.getPhysicsSpace().enableDebug(assetManager);
     80         setupKeys();
     81         setupJoint();
     82     }
     83 
     84     private PhysicsSpace getPhysicsSpace(){
     85         return bulletAppState.getPhysicsSpace();
     86     }
     87 
     88     public void setupJoint() {
     89         Node holderNode=PhysicsTestHelper.createPhysicsTestNode(assetManager, new BoxCollisionShape(new Vector3f( .1f, .1f, .1f)),0);
     90         holderNode.getControl(RigidBodyControl.class).setPhysicsLocation(new Vector3f(0f,0,0f));
     91         rootNode.attachChild(holderNode);
     92         getPhysicsSpace().add(holderNode);
     93 
     94         Node hammerNode=PhysicsTestHelper.createPhysicsTestNode(assetManager, new BoxCollisionShape(new Vector3f( .3f, .3f, .3f)),1);
     95         hammerNode.getControl(RigidBodyControl.class).setPhysicsLocation(new Vector3f(0f,-1,0f));
     96         rootNode.attachChild(hammerNode);
     97         getPhysicsSpace().add(hammerNode);
     98 
     99         joint=new HingeJoint(holderNode.getControl(RigidBodyControl.class), hammerNode.getControl(RigidBodyControl.class), Vector3f.ZERO, new Vector3f(0f,-1,0f), Vector3f.UNIT_Z, Vector3f.UNIT_Z);
    100         getPhysicsSpace().add(joint);
    101     }
    102 
    103     @Override
    104     public void simpleUpdate(float tpf) {
    105 
    106     }
    107 
    108 
    109 }