    001package net.minecraft.client.particle;
    002
    003import cpw.mods.fml.relauncher.Side;
    004import cpw.mods.fml.relauncher.SideOnly;
    005import net.minecraft.client.renderer.Tessellator;
    006import net.minecraft.world.World;
    007
    008@SideOnly(Side.CLIENT)
    009public class EntityPortalFX extends EntityFX
    010{
    011    private float portalParticleScale;
    012    private double portalPosX;
    013    private double portalPosY;
    014    private double portalPosZ;
    015
    016    public EntityPortalFX(World par1World, double par2, double par4, double par6, double par8, double par10, double par12)
    017    {
    018        super(par1World, par2, par4, par6, par8, par10, par12);
    019        this.motionX = par8;
    020        this.motionY = par10;
    021        this.motionZ = par12;
    022        this.portalPosX = this.posX = par2;
    023        this.portalPosY = this.posY = par4;
    024        this.portalPosZ = this.posZ = par6;
    025        float f = this.rand.nextFloat() * 0.6F + 0.4F;
    026        this.portalParticleScale = this.particleScale = this.rand.nextFloat() * 0.2F + 0.5F;
    027        this.particleRed = this.particleGreen = this.particleBlue = 1.0F * f;
    028        this.particleGreen *= 0.3F;
    029        this.particleRed *= 0.9F;
    030        this.particleMaxAge = (int)(Math.random() * 10.0D) + 40;
    031        this.noClip = true;
    032        this.setParticleTextureIndex((int)(Math.random() * 8.0D));
    033    }
    034
    035    public void renderParticle(Tessellator par1Tessellator, float par2, float par3, float par4, float par5, float par6, float par7)
    036    {
    037        float f6 = ((float)this.particleAge + par2) / (float)this.particleMaxAge;
    038        f6 = 1.0F - f6;
    039        f6 *= f6;
    040        f6 = 1.0F - f6;
    041        this.particleScale = this.portalParticleScale * f6;
    042        super.renderParticle(par1Tessellator, par2, par3, par4, par5, par6, par7);
    043    }
    044
    045    public int getBrightnessForRender(float par1)
    046    {
    047        int i = super.getBrightnessForRender(par1);
    048        float f1 = (float)this.particleAge / (float)this.particleMaxAge;
    049        f1 *= f1;
    050        f1 *= f1;
    051        int j = i & 255;
    052        int k = i >> 16 & 255;
    053        k += (int)(f1 * 15.0F * 16.0F);
    054
    055        if (k > 240)
    056        {
    057            k = 240;
    058        }
    059
    060        return j | k << 16;
    061    }
    062
    063    /**
    064     * Gets how bright this entity is.
    065     */
    066    public float getBrightness(float par1)
    067    {
    068        float f1 = super.getBrightness(par1);
    069        float f2 = (float)this.particleAge / (float)this.particleMaxAge;
    070        f2 = f2 * f2 * f2 * f2;
    071        return f1 * (1.0F - f2) + f2;
    072    }
    073
    074    /**
    075     * Called to update the entity's position/logic.
    076     */
    077    public void onUpdate()
    078    {
    079        this.prevPosX = this.posX;
    080        this.prevPosY = this.posY;
    081        this.prevPosZ = this.posZ;
    082        float f = (float)this.particleAge / (float)this.particleMaxAge;
    083        float f1 = f;
    084        f = -f + f * f * 2.0F;
    085        f = 1.0F - f;
    086        this.posX = this.portalPosX + this.motionX * (double)f;
    087        this.posY = this.portalPosY + this.motionY * (double)f + (double)(1.0F - f1);
    088        this.posZ = this.portalPosZ + this.motionZ * (double)f;
    089
    090        if (this.particleAge++ >= this.particleMaxAge)
    091        {
    092            this.setDead();
    093        }
    094    }
    095}