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ParticleEmitterChangeSpriteTest.java
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ParticleEmitterChangeSpriteTest.java
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/*******************************************************************************
* Copyright 2011 See AUTHORS file.
*
* 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 com.badlogic.gdx.tests;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.InputProcessor;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.g2d.ParticleEffect;
import com.badlogic.gdx.graphics.g2d.ParticleEmitter;
import com.badlogic.gdx.graphics.g2d.Sprite;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.graphics.g2d.TextureAtlas;
import com.badlogic.gdx.graphics.g2d.TextureRegion;
import com.badlogic.gdx.tests.utils.GdxTest;
import com.badlogic.gdx.utils.Array;
public class ParticleEmitterChangeSpriteTest extends GdxTest {
private SpriteBatch spriteBatch;
ParticleEffect effect;
int emitterIndex = 0;
Array<ParticleEmitter> emitters;
TextureAtlas atlas;
Array<Sprite> sprites;
int currentSprite = 0;
float fpsCounter;
InputProcessor inputProcessor;
@Override
public void create () {
spriteBatch = new SpriteBatch();
atlas = new TextureAtlas("data/particles.atlas");
int spriteCount = atlas.getRegions().size;
sprites = new Array<Sprite>(spriteCount);
for (TextureRegion region : atlas.getRegions()) {
sprites.add(new Sprite(region));
}
effect = new ParticleEffect();
effect.load(Gdx.files.internal("data/test.p"), Gdx.files.internal("data"));
effect.setPosition(Gdx.graphics.getWidth() / 2, Gdx.graphics.getHeight() / 2);
// Of course, a ParticleEffect is normally just used, without messing around with its emitters.
emitters = new Array(effect.getEmitters());
effect.getEmitters().clear();
effect.getEmitters().add(emitters.get(0));
inputProcessor = new InputProcessor() {
public boolean touchUp (int x, int y, int pointer, int button) {
return false;
}
public boolean touchDragged (int x, int y, int pointer) {
effect.setPosition(x, Gdx.graphics.getHeight() - y);
return false;
}
public boolean touchDown (int x, int y, int pointer, int newParam) {
ParticleEmitter emitter = emitters.get(emitterIndex);
currentSprite = (currentSprite + 1) % sprites.size;
emitter.setSprites(new Array<Sprite>(new Sprite[] { sprites.get(currentSprite) }));
return false;
}
public boolean keyUp (int keycode) {
return false;
}
public boolean keyTyped (char character) {
return false;
}
public boolean keyDown (int keycode) {
return false;
}
@Override
public boolean mouseMoved (int x, int y) {
return false;
}
@Override
public boolean scrolled (float amountX, float amountY) {
return false;
}
};
Gdx.input.setInputProcessor(inputProcessor);
}
@Override
public void dispose () {
spriteBatch.dispose();
effect.dispose();
atlas.dispose();
}
public void render () {
spriteBatch.getProjectionMatrix().setToOrtho2D(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
float delta = Gdx.graphics.getDeltaTime();
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
spriteBatch.begin();
effect.draw(spriteBatch, delta);
spriteBatch.end();
fpsCounter += delta;
if (fpsCounter > 3) {
fpsCounter = 0;
Gdx.app.log("libgdx", "current sprite: " + currentSprite + ", FPS: " + Gdx.graphics.getFramesPerSecond());
}
}
public boolean needsGL20 () {
return false;
}
}