Muzzleflash.java

/**
 * Copyright (c) Lambda Innovation, 2013-2015
 * 本作品版权由Lambda Innovation所有。
 * http://www.li-dev.cn/
 *
 * This project is open-source, and it is distributed under  
 * the terms of GNU General Public License. You can modify
 * and distribute freely as long as you follow the license.
 * 本项目是一个开源项目，且遵循GNU通用公共授权协议。
 * 在遵照该协议的情况下，您可以自由传播和修改。
 * http://www.gnu.org/licenses/gpl.html
 */
package cn.weaponry.impl.classic.client.animation;

import net.minecraft.util.ResourceLocation;

import org.lwjgl.opengl.GL11;

import cn.liutils.loading.Loader.ObjectNamespace;
import cn.liutils.render.material.SimpleMaterial;
import cn.liutils.render.mesh.Mesh;
import cn.liutils.render.mesh.MeshUtils;
import cn.liutils.util.client.RenderUtils;
import cn.liutils.util.generic.RandUtils;
import cn.weaponry.api.ItemInfo;
import cn.weaponry.api.client.render.PartedModel;
import cn.weaponry.api.client.render.RenderInfo.Animation;

/**
 * @author WeAthFolD
 *
 */
public class Muzzleflash extends Animation {
    
    private static ResourceLocation MISSING = new ResourceLocation("missing");
    
    public ResourceLocation[] textures;
    public ResourceLocation texture;
    public double x = 0.7, y = 0.3, z = 0;
    public double size = 0.45;
    public long time = 100;
    
    static Mesh mesh;
    static SimpleMaterial material;
    static {
        //drawObject.addHandler(DisableCullFace.instance());
        mesh = MeshUtils.createBillboard(null, -.5, -.5, .5, .5);
        material = new SimpleMaterial(null).setIgnoreLight();
    }
    
    public Muzzleflash() {
        this.setLifetime(time);
    }
    
    public void load(ObjectNamespace ns) {
        String str = ns.getString("render", "muzzleflash", "texture");
        if(str != null) {
            int index;
            if((index = str.lastIndexOf('#')) != -1) {
                int n = Integer.valueOf(str.substring(index + 1, str.length()));
                str = str.substring(0, index);
                textures = new ResourceLocation[n];
                for(int i = 0; i < n; ++i) {
                    textures[i] = new ResourceLocation(str + i + ".png");
                }
            } else {
                texture = new ResourceLocation(str + ".png");
            }
        }
        
        Double d = ns.getDouble("render", "muzzleflash", "offset", 0);
        if(d != null) {
            x = d;
        }
        d = ns.getDouble("render", "muzzleflash", "offset", 1);
        if(d != null) {
            y = d;
        }
        d = ns.getDouble("render", "muzzleflash", "offset", 2);
        if(d != null) {
            z = d;
        }
        d = ns.getDouble("render", "muzzleflash", "size");
        if(d != null) {
            size = d;
        }
        
        Integer t = ns.getInt("render", "muzzleflash", "time");
        if(t != null) {
            time = t;
        }
    }
    
    @Override
    public void render(ItemInfo info, PartedModel model, boolean firstPerson) {
        double alpha = 1.0;
        
        if(texture == null && textures != null) {
            texture = textures[RandUtils.nextInt(textures.length)];
        }
        
        //Blend in
        long dt = getTime();
        if(dt < 40) {
            alpha = dt / 40.0;
        } else if(dt > lifeTime - 40.0) {
            alpha = (lifeTime - dt) / 40.0;
        }
        
        GL11.glDisable(GL11.GL_CULL_FACE);
        GL11.glEnable(GL11.GL_BLEND);
        GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE);
        GL11.glPushMatrix();
        RenderUtils.loadTexture(texture == null ? MISSING : texture);
        GL11.glTranslated(x, y, z);
        
        material.setTexture(texture);
        GL11.glScaled(size, size, size);
        material.color.a = alpha * 0.8;
        GL11.glRotatef(90, 0, 1, 0);
        mesh.draw(material);
        GL11.glColor4d(1, 1, 1, 1);
        
        GL11.glPopMatrix();
        GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
        GL11.glEnable(GL11.GL_CULL_FACE);
    }
    
    public <T extends Animation> T copy() {
        Muzzleflash copy = super.copy();
        copy.textures = textures;
        return (T) copy;
    }
    
}