1 /******************************************************************************* 2 * Copyright 2011 See AUTHORS file. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 ******************************************************************************/ 16 17 package com.badlogic.gdx.tests; 18 19 import com.badlogic.gdx.Gdx; 20 import com.badlogic.gdx.Input; 21 import com.badlogic.gdx.InputProcessor; 22 import com.badlogic.gdx.graphics.GL20; 23 import com.badlogic.gdx.graphics.g2d.ParticleEffect; 24 import com.badlogic.gdx.graphics.g2d.ParticleEmitter; 25 import com.badlogic.gdx.graphics.g2d.SpriteBatch; 26 import com.badlogic.gdx.tests.utils.GdxTest; 27 import com.badlogic.gdx.utils.Array; 28 29 public class ParticleEmitterTest extends GdxTest { 30 private SpriteBatch spriteBatch; 31 ParticleEffect effect; 32 int emitterIndex; 33 Array<ParticleEmitter> emitters; 34 int particleCount = 10; 35 float fpsCounter; 36 InputProcessor inputProcessor; 37 38 @Override create()39 public void create () { 40 spriteBatch = new SpriteBatch(); 41 42 effect = new ParticleEffect(); 43 effect.load(Gdx.files.internal("data/test.p"), Gdx.files.internal("data")); 44 effect.setPosition(Gdx.graphics.getWidth() / 2, Gdx.graphics.getHeight() / 2); 45 // Of course, a ParticleEffect is normally just used, without messing around with its emitters. 46 emitters = new Array(effect.getEmitters()); 47 effect.getEmitters().clear(); 48 effect.getEmitters().add(emitters.get(0)); 49 50 inputProcessor = new InputProcessor() { 51 public boolean touchUp (int x, int y, int pointer, int button) { 52 return false; 53 } 54 55 public boolean touchDragged (int x, int y, int pointer) { 56 effect.setPosition(x, Gdx.graphics.getHeight() - y); 57 return false; 58 } 59 60 public boolean touchDown (int x, int y, int pointer, int newParam) { 61 // effect.setPosition(x, Gdx.graphics.getHeight() - y); 62 ParticleEmitter emitter = emitters.get(emitterIndex); 63 particleCount += 100; 64 System.out.println(particleCount); 65 particleCount = Math.max(0, particleCount); 66 if (particleCount > emitter.getMaxParticleCount()) emitter.setMaxParticleCount(particleCount * 2); 67 emitter.getEmission().setHigh(particleCount / emitter.getLife().getHighMax() * 1000); 68 effect.getEmitters().clear(); 69 effect.getEmitters().add(emitter); 70 return false; 71 } 72 73 public boolean keyUp (int keycode) { 74 return false; 75 } 76 77 public boolean keyTyped (char character) { 78 return false; 79 } 80 81 public boolean keyDown (int keycode) { 82 ParticleEmitter emitter = emitters.get(emitterIndex); 83 if (keycode == Input.Keys.DPAD_UP) 84 particleCount += 5; 85 else if (keycode == Input.Keys.DPAD_DOWN) 86 particleCount -= 5; 87 else if (keycode == Input.Keys.SPACE) { 88 emitterIndex = (emitterIndex + 1) % emitters.size; 89 emitter = emitters.get(emitterIndex); 90 91 // if we've previously stopped the emitter reset it 92 if (emitter.isComplete()) emitter.reset(); 93 particleCount = (int)(emitter.getEmission().getHighMax() * emitter.getLife().getHighMax() / 1000f); 94 } else if (keycode == Input.Keys.ENTER) { 95 emitter = emitters.get(emitterIndex); 96 if (emitter.isComplete()) 97 emitter.reset(); 98 else 99 emitter.allowCompletion(); 100 } else 101 return false; 102 particleCount = Math.max(0, particleCount); 103 if (particleCount > emitter.getMaxParticleCount()) emitter.setMaxParticleCount(particleCount * 2); 104 emitter.getEmission().setHigh(particleCount / emitter.getLife().getHighMax() * 1000); 105 effect.getEmitters().clear(); 106 effect.getEmitters().add(emitter); 107 return false; 108 } 109 110 @Override 111 public boolean mouseMoved (int x, int y) { 112 return false; 113 } 114 115 @Override 116 public boolean scrolled (int amount) { 117 return false; 118 } 119 }; 120 121 Gdx.input.setInputProcessor(inputProcessor); 122 } 123 124 @Override dispose()125 public void dispose () { 126 spriteBatch.dispose(); 127 effect.dispose(); 128 } 129 render()130 public void render () { 131 spriteBatch.getProjectionMatrix().setToOrtho2D(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight()); 132 float delta = Gdx.graphics.getDeltaTime(); 133 Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT); 134 spriteBatch.begin(); 135 effect.draw(spriteBatch, delta); 136 spriteBatch.end(); 137 fpsCounter += delta; 138 if (fpsCounter > 3) { 139 fpsCounter = 0; 140 int activeCount = emitters.get(emitterIndex).getActiveCount(); 141 Gdx.app.log("libgdx", activeCount + "/" + particleCount + " particles, FPS: " + Gdx.graphics.getFramesPerSecond()); 142 } 143 } 144 needsGL20()145 public boolean needsGL20 () { 146 return false; 147 } 148 } 149