src/jmetest/awt/applet/AppletTestParticles.java

   1 /*
   2  * Copyright (c) 2003-2009 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,
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  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 jmetest.awt.applet;
  34
  35 import com.jme.bounding.BoundingBox;
  36 import com.jme.image.Texture;
  37 import com.jme.math.FastMath;
  38 import com.jme.math.Vector3f;
  39 import com.jme.renderer.ColorRGBA;
  40 import com.jme.renderer.Renderer;
  41 import com.jme.scene.shape.Sphere;
  42 import com.jme.scene.state.BlendState;
  43 import com.jme.scene.state.TextureState;
  44 import com.jme.scene.state.ZBufferState;
  45 import com.jme.util.TextureManager;
  46 import com.jmex.awt.applet.SimpleJMEApplet;
  47 import com.jmex.effects.particles.ParticleFactory;
  48 import com.jmex.effects.particles.ParticleSystem;
  49 import com.jmex.effects.particles.SwarmInfluence;
  50
  51 public class AppletTestParticles extends SimpleJMEApplet {
  52     private static final long serialVersionUID = 1L;
  53
  54     private ParticleSystem particles;
  55     private Vector3f currentPos = new Vector3f(), newPos = new Vector3f();
  56     private SwarmInfluence swarm;
  57     private Sphere sphere;
  58
  59     public void simpleAppletUpdate() {
  60         float tpf = getTimePerFrame();
  61         if (tpf > 1f)
  62             tpf = 1.0f; // do this to prevent a long pause at start
  63
  64         if ((int) currentPos.x == (int) newPos.x
  65                 && (int) currentPos.y == (int) newPos.y
  66                 && (int) currentPos.z == (int) newPos.z) {
  67             newPos.x = (float) Math.random() * 50 - 25;
  68             newPos.y = (float) Math.random() * 50 - 25;
  69             newPos.z = (float) Math.random() * 50 - 150;
  70         }
  71
  72         if (!Float.isInfinite(tpf) && !Float.isNaN(tpf)) {
  73             currentPos.x -= (currentPos.x - newPos.x) * tpf;
  74             currentPos.y -= (currentPos.y - newPos.y) * tpf;
  75             currentPos.z -= (currentPos.z - newPos.z) * tpf;
  76         }
  77
  78         particles.setOriginOffset(currentPos);
  79         sphere.getLocalTranslation().set(currentPos);
  80     }
  81
  82     public void simpleAppletSetup() {
  83         getLightState().setEnabled(false);
  84
  85         sphere = new Sphere("sp", 12, 12, 3f);
  86         sphere.setModelBound(new BoundingBox());
  87         sphere.updateModelBound();
  88         sphere.setDefaultColor(ColorRGBA.blue.clone());
  89         sphere.setRenderQueueMode(Renderer.QUEUE_OPAQUE);
  90
  91         particles = ParticleFactory.buildParticles("particles", 30);
  92         particles.setEmissionDirection(new Vector3f(0, 1, 0));
  93         particles.setStartSize(3f);
  94         particles.setEndSize(1.5f);
  95         particles.setOriginOffset(new Vector3f(0, 0, 0));
  96         particles.setInitialVelocity(.05f);
  97         particles.setMinimumLifeTime( 5000f);
  98         particles.setMaximumLifeTime(15000f);
  99         particles.setStartColor(new ColorRGBA(1, 0, 0, 1));
 100         particles.setEndColor(new ColorRGBA(0, 1, 0, 0));
 101         particles.setMaximumAngle(360f * FastMath.DEG_TO_RAD);
 102         particles.getParticleController().setControlFlow(false);
 103         particles.getParticleController().setSpeed(0.75f);
 104         swarm = new SwarmInfluence(new Vector3f(particles.getWorldTranslation()), .001f);
 105         swarm.setMaxSpeed(.2f);
 106         swarm.setSpeedBump(0.025f);
 107         swarm.setTurnSpeed(FastMath.DEG_TO_RAD * 360);
 108         particles.addInfluence(swarm);
 109         particles.warmUp(60);
 110
 111         BlendState as1 = getRenderer().createBlendState();
 112         as1.setBlendEnabled(true);
 113         as1.setSourceFunction(BlendState.SourceFunction.SourceAlpha);
 114         as1.setDestinationFunction(BlendState.DestinationFunction.One);
 115         as1.setTestEnabled(true);
 116         as1.setTestFunction(BlendState.TestFunction.GreaterThan);
 117         as1.setEnabled(true);
 118         particles.setRenderState(as1);
 119
 120         TextureState ts = getRenderer().createTextureState();
 121         ts.setTexture(
 122             TextureManager.loadTexture(
 123             AppletTestParticles.class.getClassLoader().getResource(
 124             "jmetest/data/texture/flaresmall.jpg"),
 125             Texture.MinificationFilter.Trilinear,
 126             Texture.MagnificationFilter.Bilinear));
 127         ts.setEnabled(true);
 128         particles.setRenderState(ts);
 129
 130         ZBufferState zstate = getRenderer().createZBufferState();
 131         zstate.setEnabled(false);
 132         particles.setRenderState(zstate);
 133
 134         particles.setModelBound(new BoundingBox());
 135         particles.updateModelBound();
 136
 137         getRootNode().attachChild(particles);
 138         getRootNode().attachChild(sphere);
 139     }
 140 }