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.util.MathHelper;
007    import net.minecraft.world.World;
008    
009    @SideOnly(Side.CLIENT)
010    public class EntityFireworkOverlayFX extends EntityFX
011    {
012        protected EntityFireworkOverlayFX(World par1World, double par2, double par4, double par6)
013        {
014            super(par1World, par2, par4, par6);
015            this.particleMaxAge = 4;
016        }
017    
018        public void renderParticle(Tessellator par1Tessellator, float par2, float par3, float par4, float par5, float par6, float par7)
019        {
020            float var8 = 0.25F;
021            float var9 = var8 + 0.25F;
022            float var10 = 0.125F;
023            float var11 = var10 + 0.25F;
024            float var12 = 7.1F * MathHelper.sin(((float)this.particleAge + par2 - 1.0F) * 0.25F * (float)Math.PI);
025            this.particleAlpha = 0.6F - ((float)this.particleAge + par2 - 1.0F) * 0.25F * 0.5F;
026            float var13 = (float)(this.prevPosX + (this.posX - this.prevPosX) * (double)par2 - interpPosX);
027            float var14 = (float)(this.prevPosY + (this.posY - this.prevPosY) * (double)par2 - interpPosY);
028            float var15 = (float)(this.prevPosZ + (this.posZ - this.prevPosZ) * (double)par2 - interpPosZ);
029            par1Tessellator.setColorRGBA_F(this.particleRed, this.particleGreen, this.particleBlue, this.particleAlpha);
030            par1Tessellator.addVertexWithUV((double)(var13 - par3 * var12 - par6 * var12), (double)(var14 - par4 * var12), (double)(var15 - par5 * var12 - par7 * var12), (double)var9, (double)var11);
031            par1Tessellator.addVertexWithUV((double)(var13 - par3 * var12 + par6 * var12), (double)(var14 + par4 * var12), (double)(var15 - par5 * var12 + par7 * var12), (double)var9, (double)var10);
032            par1Tessellator.addVertexWithUV((double)(var13 + par3 * var12 + par6 * var12), (double)(var14 + par4 * var12), (double)(var15 + par5 * var12 + par7 * var12), (double)var8, (double)var10);
033            par1Tessellator.addVertexWithUV((double)(var13 + par3 * var12 - par6 * var12), (double)(var14 - par4 * var12), (double)(var15 + par5 * var12 - par7 * var12), (double)var8, (double)var11);
034        }
035    }