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 EntityLavaFX extends EntityFX
010    {
011        private float lavaParticleScale;
012    
013        public EntityLavaFX(World par1World, double par2, double par4, double par6)
014        {
015            super(par1World, par2, par4, par6, 0.0D, 0.0D, 0.0D);
016            this.motionX *= 0.800000011920929D;
017            this.motionY *= 0.800000011920929D;
018            this.motionZ *= 0.800000011920929D;
019            this.motionY = (double)(this.rand.nextFloat() * 0.4F + 0.05F);
020            this.particleRed = this.particleGreen = this.particleBlue = 1.0F;
021            this.particleScale *= this.rand.nextFloat() * 2.0F + 0.2F;
022            this.lavaParticleScale = this.particleScale;
023            this.particleMaxAge = (int)(16.0D / (Math.random() * 0.8D + 0.2D));
024            this.noClip = false;
025            this.setParticleTextureIndex(49);
026        }
027    
028        public int getBrightnessForRender(float par1)
029        {
030            float var2 = ((float)this.particleAge + par1) / (float)this.particleMaxAge;
031    
032            if (var2 < 0.0F)
033            {
034                var2 = 0.0F;
035            }
036    
037            if (var2 > 1.0F)
038            {
039                var2 = 1.0F;
040            }
041    
042            int var3 = super.getBrightnessForRender(par1);
043            short var4 = 240;
044            int var5 = var3 >> 16 & 255;
045            return var4 | var5 << 16;
046        }
047    
048        /**
049         * Gets how bright this entity is.
050         */
051        public float getBrightness(float par1)
052        {
053            return 1.0F;
054        }
055    
056        public void renderParticle(Tessellator par1Tessellator, float par2, float par3, float par4, float par5, float par6, float par7)
057        {
058            float var8 = ((float)this.particleAge + par2) / (float)this.particleMaxAge;
059            this.particleScale = this.lavaParticleScale * (1.0F - var8 * var8);
060            super.renderParticle(par1Tessellator, par2, par3, par4, par5, par6, par7);
061        }
062    
063        /**
064         * Called to update the entity's position/logic.
065         */
066        public void onUpdate()
067        {
068            this.prevPosX = this.posX;
069            this.prevPosY = this.posY;
070            this.prevPosZ = this.posZ;
071    
072            if (this.particleAge++ >= this.particleMaxAge)
073            {
074                this.setDead();
075            }
076    
077            float var1 = (float)this.particleAge / (float)this.particleMaxAge;
078    
079            if (this.rand.nextFloat() > var1)
080            {
081                this.worldObj.spawnParticle("smoke", this.posX, this.posY, this.posZ, this.motionX, this.motionY, this.motionZ);
082            }
083    
084            this.motionY -= 0.03D;
085            this.moveEntity(this.motionX, this.motionY, this.motionZ);
086            this.motionX *= 0.9990000128746033D;
087            this.motionY *= 0.9990000128746033D;
088            this.motionZ *= 0.9990000128746033D;
089    
090            if (this.onGround)
091            {
092                this.motionX *= 0.699999988079071D;
093                this.motionZ *= 0.699999988079071D;
094            }
095        }
096    }