001    package net.minecraft.src;
002    
003    import cpw.mods.fml.common.Side;
004    import cpw.mods.fml.common.asm.SideOnly;
005    
006    @SideOnly(Side.CLIENT)
007    public class EntityPortalFX extends EntityFX
008    {
009        private float portalParticleScale;
010        private double portalPosX;
011        private double portalPosY;
012        private double portalPosZ;
013    
014        public EntityPortalFX(World par1World, double par2, double par4, double par6, double par8, double par10, double par12)
015        {
016            super(par1World, par2, par4, par6, par8, par10, par12);
017            this.motionX = par8;
018            this.motionY = par10;
019            this.motionZ = par12;
020            this.portalPosX = this.posX = par2;
021            this.portalPosY = this.posY = par4;
022            this.portalPosZ = this.posZ = par6;
023            float var14 = this.rand.nextFloat() * 0.6F + 0.4F;
024            this.portalParticleScale = this.particleScale = this.rand.nextFloat() * 0.2F + 0.5F;
025            this.particleRed = this.particleGreen = this.particleBlue = 1.0F * var14;
026            this.particleGreen *= 0.3F;
027            this.particleRed *= 0.9F;
028            this.particleMaxAge = (int)(Math.random() * 10.0D) + 40;
029            this.noClip = true;
030            this.setParticleTextureIndex((int)(Math.random() * 8.0D));
031        }
032    
033        public void renderParticle(Tessellator par1Tessellator, float par2, float par3, float par4, float par5, float par6, float par7)
034        {
035            float var8 = ((float)this.particleAge + par2) / (float)this.particleMaxAge;
036            var8 = 1.0F - var8;
037            var8 *= var8;
038            var8 = 1.0F - var8;
039            this.particleScale = this.portalParticleScale * var8;
040            super.renderParticle(par1Tessellator, par2, par3, par4, par5, par6, par7);
041        }
042    
043        public int getBrightnessForRender(float par1)
044        {
045            int var2 = super.getBrightnessForRender(par1);
046            float var3 = (float)this.particleAge / (float)this.particleMaxAge;
047            var3 *= var3;
048            var3 *= var3;
049            int var4 = var2 & 255;
050            int var5 = var2 >> 16 & 255;
051            var5 += (int)(var3 * 15.0F * 16.0F);
052    
053            if (var5 > 240)
054            {
055                var5 = 240;
056            }
057    
058            return var4 | var5 << 16;
059        }
060    
061        /**
062         * Gets how bright this entity is.
063         */
064        public float getBrightness(float par1)
065        {
066            float var2 = super.getBrightness(par1);
067            float var3 = (float)this.particleAge / (float)this.particleMaxAge;
068            var3 = var3 * var3 * var3 * var3;
069            return var2 * (1.0F - var3) + var3;
070        }
071    
072        /**
073         * Called to update the entity's position/logic.
074         */
075        public void onUpdate()
076        {
077            this.prevPosX = this.posX;
078            this.prevPosY = this.posY;
079            this.prevPosZ = this.posZ;
080            float var1 = (float)this.particleAge / (float)this.particleMaxAge;
081            float var2 = var1;
082            var1 = -var1 + var1 * var1 * 2.0F;
083            var1 = 1.0F - var1;
084            this.posX = this.portalPosX + this.motionX * (double)var1;
085            this.posY = this.portalPosY + this.motionY * (double)var1 + (double)(1.0F - var2);
086            this.posZ = this.portalPosZ + this.motionZ * (double)var1;
087    
088            if (this.particleAge++ >= this.particleMaxAge)
089            {
090                this.setDead();
091            }
092        }
093    }