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
33package jme3test.audio;
34
35import com.jme3.app.SimpleApplication;
36import com.jme3.audio.AudioNode;
37import com.jme3.audio.Environment;
38import com.jme3.math.FastMath;
39import com.jme3.math.Vector3f;
40import org.lwjgl.openal.AL10;
41import org.lwjgl.openal.AL11;
42
43/**
44 * Test Doppler Effect
45 */
46public class TestDoppler extends SimpleApplication {
47
48    private AudioNode ufo;
49
50    private float x = 20, z = 0;
51    private float rate     = -0.05f;
52    private float xDist    = 20;
53    private float zDist    = 5;
54    private float angle    = FastMath.TWO_PI;
55
56    public static void main(String[] args){
57        TestDoppler test = new TestDoppler();
58        test.start();
59    }
60
61    @Override
62    public void simpleInitApp(){
63        audioRenderer.setEnvironment(Environment.Dungeon);
64        AL10.alDistanceModel(AL11.AL_EXPONENT_DISTANCE);
65
66        ufo  = new AudioNode(assetManager, "Sound/Effects/Beep.ogg", false);
67        ufo.setPositional(true);
68        ufo.setLooping(true);
69        ufo.setReverbEnabled(true);
70        ufo.setRefDistance(100000000);
71        ufo.setMaxDistance(100000000);
72        ufo.play();
73    }
74
75    @Override
76    public void simpleUpdate(float tpf){
77        //float x  = (float) (Math.cos(angle) * xDist);
78        float dx = (float)  Math.sin(angle) * xDist;
79
80        //float z  = (float) (Math.sin(angle) * zDist);
81        float dz = (float)(-Math.cos(angle) * zDist);
82
83        x += dx * tpf * 0.05f;
84        z += dz * tpf * 0.05f;
85
86        angle += tpf * rate;
87
88        if (angle > FastMath.TWO_PI){
89            angle = FastMath.TWO_PI;
90            rate = -rate;
91        }else if (angle < -0){
92            angle = -0;
93            rate = -rate;
94        }
95
96        ufo.setVelocity(new Vector3f(dx, 0, dz));
97        ufo.setLocalTranslation(x, 0, z);
98        ufo.updateGeometricState();
99
100        System.out.println("LOC: " + (int)x +", " + (int)z +
101                ", VEL: " + (int)dx + ", " + (int)dz);
102    }
103
104}
105