001    package net.minecraft.client.particle;
002    
003    import cpw.mods.fml.relauncher.Side;
004    import cpw.mods.fml.relauncher.SideOnly;
005    import net.minecraft.client.renderer.Tessellator;
006    import net.minecraft.world.World;
007    
008    @SideOnly(Side.CLIENT)
009    public class EntitySmokeFX extends EntityFX
010    {
011        float smokeParticleScale;
012    
013        public EntitySmokeFX(World par1World, double par2, double par4, double par6, double par8, double par10, double par12)
014        {
015            this(par1World, par2, par4, par6, par8, par10, par12, 1.0F);
016        }
017    
018        public EntitySmokeFX(World par1World, double par2, double par4, double par6, double par8, double par10, double par12, float par14)
019        {
020            super(par1World, par2, par4, par6, 0.0D, 0.0D, 0.0D);
021            this.motionX *= 0.10000000149011612D;
022            this.motionY *= 0.10000000149011612D;
023            this.motionZ *= 0.10000000149011612D;
024            this.motionX += par8;
025            this.motionY += par10;
026            this.motionZ += par12;
027            this.particleRed = this.particleGreen = this.particleBlue = (float)(Math.random() * 0.30000001192092896D);
028            this.particleScale *= 0.75F;
029            this.particleScale *= par14;
030            this.smokeParticleScale = this.particleScale;
031            this.particleMaxAge = (int)(8.0D / (Math.random() * 0.8D + 0.2D));
032            this.particleMaxAge = (int)((float)this.particleMaxAge * par14);
033            this.noClip = false;
034        }
035    
036        public void renderParticle(Tessellator par1Tessellator, float par2, float par3, float par4, float par5, float par6, float par7)
037        {
038            float var8 = ((float)this.particleAge + par2) / (float)this.particleMaxAge * 32.0F;
039    
040            if (var8 < 0.0F)
041            {
042                var8 = 0.0F;
043            }
044    
045            if (var8 > 1.0F)
046            {
047                var8 = 1.0F;
048            }
049    
050            this.particleScale = this.smokeParticleScale * var8;
051            super.renderParticle(par1Tessellator, par2, par3, par4, par5, par6, par7);
052        }
053    
054        /**
055         * Called to update the entity's position/logic.
056         */
057        public void onUpdate()
058        {
059            this.prevPosX = this.posX;
060            this.prevPosY = this.posY;
061            this.prevPosZ = this.posZ;
062    
063            if (this.particleAge++ >= this.particleMaxAge)
064            {
065                this.setDead();
066            }
067    
068            this.setParticleTextureIndex(7 - this.particleAge * 8 / this.particleMaxAge);
069            this.motionY += 0.004D;
070            this.moveEntity(this.motionX, this.motionY, this.motionZ);
071    
072            if (this.posY == this.prevPosY)
073            {
074                this.motionX *= 1.1D;
075                this.motionZ *= 1.1D;
076            }
077    
078            this.motionX *= 0.9599999785423279D;
079            this.motionY *= 0.9599999785423279D;
080            this.motionZ *= 0.9599999785423279D;
081    
082            if (this.onGround)
083            {
084                this.motionX *= 0.699999988079071D;
085                this.motionZ *= 0.699999988079071D;
086            }
087        }
088    }