    001    package net.minecraft.client.renderer;
    002
    003    import cpw.mods.fml.common.Side;
    004    import cpw.mods.fml.common.asm.SideOnly;
    005    import java.util.Comparator;
    006    import net.minecraft.entity.Entity;
    007
    008    @SideOnly(Side.CLIENT)
    009    public class EntitySorter implements Comparator
    010    {
    011        /** Entity position X */
    012        private double entityPosX;
    013
    014        /** Entity position Y */
    015        private double entityPosY;
    016
    017        /** Entity position Z */
    018        private double entityPosZ;
    019
    020        public EntitySorter(Entity par1Entity)
    021        {
    022            this.entityPosX = -par1Entity.posX;
    023            this.entityPosY = -par1Entity.posY;
    024            this.entityPosZ = -par1Entity.posZ;
    025        }
    026
    027        /**
    028         * Sorts the two world renderers according to their distance to a given entity.
    029         */
    030        public int sortByDistanceToEntity(WorldRenderer par1WorldRenderer, WorldRenderer par2WorldRenderer)
    031        {
    032            double var3 = (double)par1WorldRenderer.posXPlus + this.entityPosX;
    033            double var5 = (double)par1WorldRenderer.posYPlus + this.entityPosY;
    034            double var7 = (double)par1WorldRenderer.posZPlus + this.entityPosZ;
    035            double var9 = (double)par2WorldRenderer.posXPlus + this.entityPosX;
    036            double var11 = (double)par2WorldRenderer.posYPlus + this.entityPosY;
    037            double var13 = (double)par2WorldRenderer.posZPlus + this.entityPosZ;
    038            return (int)((var3 * var3 + var5 * var5 + var7 * var7 - (var9 * var9 + var11 * var11 + var13 * var13)) * 1024.0D);
    039        }
    040
    041        public int compare(Object par1Obj, Object par2Obj)
    042        {
    043            return this.sortByDistanceToEntity((WorldRenderer)par1Obj, (WorldRenderer)par2Obj);
    044        }
    045    }