    001    package net.minecraft.src;
    002
    003    public class EntityAIMoveTowardsTarget extends EntityAIBase
    004    {
    005        private EntityCreature theEntity;
    006        private EntityLiving targetEntity;
    007        private double movePosX;
    008        private double movePosY;
    009        private double movePosZ;
    010        private float field_75425_f;
    011        private float field_75426_g;
    012
    013        public EntityAIMoveTowardsTarget(EntityCreature par1EntityCreature, float par2, float par3)
    014        {
    015            this.theEntity = par1EntityCreature;
    016            this.field_75425_f = par2;
    017            this.field_75426_g = par3;
    018            this.setMutexBits(1);
    019        }
    020
    021        /**
    022         * Returns whether the EntityAIBase should begin execution.
    023         */
    024        public boolean shouldExecute()
    025        {
    026            this.targetEntity = this.theEntity.getAttackTarget();
    027
    028            if (this.targetEntity == null)
    029            {
    030                return false;
    031            }
    032            else if (this.targetEntity.getDistanceSqToEntity(this.theEntity) > (double)(this.field_75426_g * this.field_75426_g))
    033            {
    034                return false;
    035            }
    036            else
    037            {
    038                Vec3 var1 = RandomPositionGenerator.findRandomTargetBlockTowards(this.theEntity, 16, 7, this.theEntity.worldObj.getWorldVec3Pool().getVecFromPool(this.targetEntity.posX, this.targetEntity.posY, this.targetEntity.posZ));
    039
    040                if (var1 == null)
    041                {
    042                    return false;
    043                }
    044                else
    045                {
    046                    this.movePosX = var1.xCoord;
    047                    this.movePosY = var1.yCoord;
    048                    this.movePosZ = var1.zCoord;
    049                    return true;
    050                }
    051            }
    052        }
    053
    054        /**
    055         * Returns whether an in-progress EntityAIBase should continue executing
    056         */
    057        public boolean continueExecuting()
    058        {
    059            return !this.theEntity.getNavigator().noPath() && this.targetEntity.isEntityAlive() && this.targetEntity.getDistanceSqToEntity(this.theEntity) < (double)(this.field_75426_g * this.field_75426_g);
    060        }
    061
    062        /**
    063         * Resets the task
    064         */
    065        public void resetTask()
    066        {
    067            this.targetEntity = null;
    068        }
    069
    070        /**
    071         * Execute a one shot task or start executing a continuous task
    072         */
    073        public void startExecuting()
    074        {
    075            this.theEntity.getNavigator().tryMoveToXYZ(this.movePosX, this.movePosY, this.movePosZ, this.field_75425_f);
    076        }
    077    }