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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 package jme3test.effect;
     33 
     34 import com.jme3.app.SimpleApplication;
     35 import com.jme3.effect.ParticleEmitter;
     36 import com.jme3.effect.ParticleMesh.Type;
     37 import com.jme3.input.KeyInput;
     38 import com.jme3.input.controls.ActionListener;
     39 import com.jme3.input.controls.KeyTrigger;
     40 import com.jme3.material.Material;
     41 import com.jme3.math.FastMath;
     42 import com.jme3.math.Vector3f;
     43 
     44 /**
     45  * Particle that moves in a circle.
     46  *
     47  * @author Kirill Vainer
     48  */
     49 public class TestMovingParticle extends SimpleApplication {
     50 
     51     private ParticleEmitter emit;
     52     private float angle = 0;
     53 
     54     public static void main(String[] args) {
     55         TestMovingParticle app = new TestMovingParticle();
     56         app.start();
     57     }
     58 
     59     @Override
     60     public void simpleInitApp() {
     61         emit = new ParticleEmitter("Emitter", Type.Triangle, 300);
     62         emit.setGravity(0, 0, 0);
     63         emit.setVelocityVariation(1);
     64         emit.setLowLife(1);
     65         emit.setHighLife(1);
     66         emit.setInitialVelocity(new Vector3f(0, .5f, 0));
     67         emit.setImagesX(15);
     68         Material mat = new Material(assetManager, "Common/MatDefs/Misc/Particle.j3md");
     69         mat.setTexture("Texture", assetManager.loadTexture("Effects/Smoke/Smoke.png"));
     70         emit.setMaterial(mat);
     71 
     72         rootNode.attachChild(emit);
     73 
     74         inputManager.addListener(new ActionListener() {
     75 
     76             public void onAction(String name, boolean isPressed, float tpf) {
     77                 if ("setNum".equals(name) && isPressed) {
     78                     emit.setNumParticles(1000);
     79                 }
     80             }
     81         }, "setNum");
     82 
     83         inputManager.addMapping("setNum", new KeyTrigger(KeyInput.KEY_SPACE));
     84     }
     85 
     86     @Override
     87     public void simpleUpdate(float tpf) {
     88         angle += tpf;
     89         angle %= FastMath.TWO_PI;
     90         float x = FastMath.cos(angle) * 2;
     91         float y = FastMath.sin(angle) * 2;
     92         emit.setLocalTranslation(x, 0, y);
     93     }
     94 }
     95