org.knowm.proprioceptron.jme.physics.TestPhysicsHingeJoint Maven / Gradle / Ivy

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/**
 * Copyright 2015-2016 Knowm Inc. (http://knowm.org) and contributors.
 * Copyright 2012-2015 MANC LLC (http://alexnugentconsulting.com/) and contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.knowm.proprioceptron.jme.physics;

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.collision.shapes.SphereCollisionShape;
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();
  }

  @Override
  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 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 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);
    Node hammerNode = PhysicsTestHelper.createPhysicsTestNode(assetManager, new SphereCollisionShape(.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);
  }

  private PhysicsSpace getPhysicsSpace() {

    return bulletAppState.getPhysicsSpace();
  }

  @Override
  public void simpleUpdate(float tpf) {

  }

}