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