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.OpenGlHelper;
006    import net.minecraft.client.renderer.Tessellator;
007    import net.minecraft.client.renderer.entity.RenderManager;
008    import net.minecraft.entity.Entity;
009    import net.minecraft.util.MathHelper;
010    import net.minecraft.world.World;
011    import org.lwjgl.opengl.GL11;
012    
013    @SideOnly(Side.CLIENT)
014    public class EntityPickupFX extends EntityFX
015    {
016        private Entity entityToPickUp;
017        private Entity entityPickingUp;
018        private int age = 0;
019        private int maxAge = 0;
020    
021        /** renamed from yOffset to fix shadowing Entity.yOffset */
022        private float yOffs;
023    
024        public EntityPickupFX(World par1World, Entity par2Entity, Entity par3Entity, float par4)
025        {
026            super(par1World, par2Entity.posX, par2Entity.posY, par2Entity.posZ, par2Entity.motionX, par2Entity.motionY, par2Entity.motionZ);
027            this.entityToPickUp = par2Entity;
028            this.entityPickingUp = par3Entity;
029            this.maxAge = 3;
030            this.yOffs = par4;
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.age + par2) / (float)this.maxAge;
036            var8 *= var8;
037            double var9 = this.entityToPickUp.posX;
038            double var11 = this.entityToPickUp.posY;
039            double var13 = this.entityToPickUp.posZ;
040            double var15 = this.entityPickingUp.lastTickPosX + (this.entityPickingUp.posX - this.entityPickingUp.lastTickPosX) * (double)par2;
041            double var17 = this.entityPickingUp.lastTickPosY + (this.entityPickingUp.posY - this.entityPickingUp.lastTickPosY) * (double)par2 + (double)this.yOffs;
042            double var19 = this.entityPickingUp.lastTickPosZ + (this.entityPickingUp.posZ - this.entityPickingUp.lastTickPosZ) * (double)par2;
043            double var21 = var9 + (var15 - var9) * (double)var8;
044            double var23 = var11 + (var17 - var11) * (double)var8;
045            double var25 = var13 + (var19 - var13) * (double)var8;
046            int var27 = MathHelper.floor_double(var21);
047            int var28 = MathHelper.floor_double(var23 + (double)(this.yOffset / 2.0F));
048            int var29 = MathHelper.floor_double(var25);
049            int var30 = this.getBrightnessForRender(par2);
050            int var31 = var30 % 65536;
051            int var32 = var30 / 65536;
052            OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, (float)var31 / 1.0F, (float)var32 / 1.0F);
053            GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
054            var21 -= interpPosX;
055            var23 -= interpPosY;
056            var25 -= interpPosZ;
057            RenderManager.instance.renderEntityWithPosYaw(this.entityToPickUp, (double)((float)var21), (double)((float)var23), (double)((float)var25), this.entityToPickUp.rotationYaw, par2);
058        }
059    
060        /**
061         * Called to update the entity's position/logic.
062         */
063        public void onUpdate()
064        {
065            ++this.age;
066    
067            if (this.age == this.maxAge)
068            {
069                this.setDead();
070            }
071        }
072    
073        public int getFXLayer()
074        {
075            return 3;
076        }
077    }