com.kauridev.lunarfever.particle.ExplosionParticleEmitter.java Source code

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Here is the source code for com.kauridev.lunarfever.particle.ExplosionParticleEmitter.java

Source

/*
 * This file is part of the lunar-fever package.
 *
 * Copyright (c) 2014 Eric Fritz
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
 * and associated documentation files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or
 * substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT.  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package com.kauridev.lunarfever.particle;

import com.kauridev.lunarfever.camera.Camera;
import com.kauridev.lunarfever.graphics.TextureLoader;
import com.kauridev.lunarfever.util.Vector;
import org.lwjgl.opengl.GL11;

/**
 * @author Eric Fritz
 */
public class ExplosionParticleEmitter extends ParticleEmitter {
    public ExplosionParticleEmitter(int maxParticles) {
        super(TextureLoader.loadTexture("assets/textures/explosion.png"), maxParticles);

        this.minNumParticles = 20;
        this.maxNumParticles = 25;

        this.minInitialSpeed = .04f;
        this.maxInitialSpeed = .50f;

        this.minAcceleration = 0.0f;
        this.maxAcceleration = 0.0f;

        this.minRotationSpeed = -(float) (Math.PI / 4) / 500;
        this.maxRotationSpeed = +(float) (Math.PI / 4) / 500;

        this.minLifetime = 500.0f;
        this.maxLifetime = 1000.0f;

        this.minScale = 0.3f;
        this.maxScale = 1.0f;
    }

    @Override
    protected void init(Particle p, float x, float y) {
        super.init(p, x, y);

        p.acceleration = new Vector((float) (p.velocity.x / p.lifetime), (float) (p.velocity.y / p.lifetime))
                .muli(-1);
    }

    @Override
    public void render(double elapsed, Camera camera) {
        //
        // TODO - configure this somehow?

        GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE);

        super.render(elapsed, camera);

        GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
    }
}