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.world.World;
006    
007    @SideOnly(Side.CLIENT)
008    public class EntityExplodeFX extends EntityFX
009    {
010        public EntityExplodeFX(World par1World, double par2, double par4, double par6, double par8, double par10, double par12)
011        {
012            super(par1World, par2, par4, par6, par8, par10, par12);
013            this.motionX = par8 + (double)((float)(Math.random() * 2.0D - 1.0D) * 0.05F);
014            this.motionY = par10 + (double)((float)(Math.random() * 2.0D - 1.0D) * 0.05F);
015            this.motionZ = par12 + (double)((float)(Math.random() * 2.0D - 1.0D) * 0.05F);
016            this.particleRed = this.particleGreen = this.particleBlue = this.rand.nextFloat() * 0.3F + 0.7F;
017            this.particleScale = this.rand.nextFloat() * this.rand.nextFloat() * 6.0F + 1.0F;
018            this.particleMaxAge = (int)(16.0D / ((double)this.rand.nextFloat() * 0.8D + 0.2D)) + 2;
019        }
020    
021        /**
022         * Called to update the entity's position/logic.
023         */
024        public void onUpdate()
025        {
026            this.prevPosX = this.posX;
027            this.prevPosY = this.posY;
028            this.prevPosZ = this.posZ;
029    
030            if (this.particleAge++ >= this.particleMaxAge)
031            {
032                this.setDead();
033            }
034    
035            this.setParticleTextureIndex(7 - this.particleAge * 8 / this.particleMaxAge);
036            this.motionY += 0.004D;
037            this.moveEntity(this.motionX, this.motionY, this.motionZ);
038            this.motionX *= 0.8999999761581421D;
039            this.motionY *= 0.8999999761581421D;
040            this.motionZ *= 0.8999999761581421D;
041    
042            if (this.onGround)
043            {
044                this.motionX *= 0.699999988079071D;
045                this.motionZ *= 0.699999988079071D;
046            }
047        }
048    }