EntityTrailFX.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.liutils.template.entity;

import java.util.LinkedList;



import cn.liutils.core.entity.SamplePoint;
import net.minecraft.entity.Entity;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.util.ResourceLocation;
import net.minecraft.world.World;

/**
 * Entity trail entity.
 * @author WeAthFolD
 */
public class EntityTrailFX extends Entity {

    private LinkedList<SamplePoint> samples = new LinkedList();
    private Entity linkedEntity;
    private ResourceLocation texNormal, texEnd;
    private boolean renderEnd, hasLight;
    private int decayTime, sampleFreq;
    private double width;

    public EntityTrailFX(World par1World, Entity par2LinkedEntity) {
        super(par1World);
        this.linkedEntity = par2LinkedEntity;
        texNormal = texEnd = null;
        renderEnd = false;
        decayTime = 20;
        sampleFreq = 2;
        this.posX = linkedEntity.posX;
        this.posY = linkedEntity.posY;
        this.posZ = linkedEntity.posZ;
        this.width = 0.5;
        this.ignoreFrustumCheck = true;
    }
    
    public EntityTrailFX setHasLight(boolean b) {
        this.hasLight = b;
        return this;
    }
    
    public boolean getHasLight() {
        return hasLight;
    }

    public EntityTrailFX setTrailWidth(double w) {
        width = w;
        return this;
    }

    public EntityTrailFX setTextures(ResourceLocation n, ResourceLocation e) {
        texNormal = n;
        texEnd = e;
        return this;
    }

    public EntityTrailFX setDoesRenderEnd(boolean b) {
        renderEnd = b;
        return this;
    }

    public EntityTrailFX setDecayTime(int time) {
        decayTime = time;
        return this;
    }

    public EntityTrailFX setSampleFreq(int freq) {
        sampleFreq = freq;
        return this;
    }
    
    @Override
    public boolean shouldRenderInPass(int pass) {
        return pass == 1;
    }

    @Override
    protected void entityInit() {
    }

    @Override
    public void onUpdate() {
        if (posX == 0 && posY == 0 && posZ == 0) {
            posX = linkedEntity.posX;
            posY = linkedEntity.posY;
            posZ = linkedEntity.posZ;
        }

        if (this.ticksExisted % sampleFreq == 0) {
            if (ticksExisted > 2 * decayTime)
                samples.removeFirst();
            if (linkedEntity.isDead) {
                if (samples.size() <= 0)
                    this.setDead();
                return;
            }
            samples.offer(new SamplePoint(linkedEntity.posX - posX,
                    linkedEntity.posY - posY, linkedEntity.posZ - posZ,
                    ticksExisted));
        }
    }

    public ResourceLocation getTexNormal() {
        return texNormal;
    }

    public ResourceLocation getTexEnd() {
        return texEnd;
    }

    public double getTrailWidth() {
        return width;
    }

    public int getDecayTime() {
        return this.decayTime;
    }

    public Boolean doesRenderEnd() {
        return renderEnd;
    }

    public LinkedList<SamplePoint> getSamplePoints() {
        return (LinkedList<SamplePoint>) samples.clone();
    }

    @Override
    protected void readEntityFromNBT(NBTTagCompound nbttagcompound) {
    }

    @Override
    protected void writeEntityToNBT(NBTTagCompound nbttagcompound) {
    }

}