    001    package net.minecraft.src;
    002
    003    public class EntityAIArrowAttack extends EntityAIBase
    004    {
    005        /** The entity the AI instance has been applied to */
    006        private final EntityLiving entityHost;
    007
    008        /**
    009         * The entity (as a RangedAttackMob) the AI instance has been applied to.
    010         */
    011        private final IRangedAttackMob rangedAttackEntityHost;
    012        private EntityLiving attackTarget;
    013
    014        /**
    015         * A decrementing tick that spawns a ranged attack once this value reaches 0. It is then set back to the
    016         * maxRangedAttackTime.
    017         */
    018        private int rangedAttackTime = 0;
    019        private float entityMoveSpeed;
    020        private int field_75318_f = 0;
    021
    022        /**
    023         * The maximum time the AI has to wait before peforming another ranged attack.
    024         */
    025        private int maxRangedAttackTime;
    026        private float field_82642_h;
    027
    028        public EntityAIArrowAttack(IRangedAttackMob par1IRangedAttackMob, float par2, int par3, float par4)
    029        {
    030            if (!(par1IRangedAttackMob instanceof EntityLiving))
    031            {
    032                throw new IllegalArgumentException("ArrowAttackGoal requires Mob implements RangedAttackMob");
    033            }
    034            else
    035            {
    036                this.rangedAttackEntityHost = par1IRangedAttackMob;
    037                this.entityHost = (EntityLiving)par1IRangedAttackMob;
    038                this.entityMoveSpeed = par2;
    039                this.maxRangedAttackTime = par3;
    040                this.field_82642_h = par4 * par4;
    041                this.setMutexBits(3);
    042            }
    043        }
    044
    045        /**
    046         * Returns whether the EntityAIBase should begin execution.
    047         */
    048        public boolean shouldExecute()
    049        {
    050            EntityLiving var1 = this.entityHost.getAttackTarget();
    051
    052            if (var1 == null)
    053            {
    054                return false;
    055            }
    056            else
    057            {
    058                this.attackTarget = var1;
    059                return true;
    060            }
    061        }
    062
    063        /**
    064         * Returns whether an in-progress EntityAIBase should continue executing
    065         */
    066        public boolean continueExecuting()
    067        {
    068            return this.shouldExecute() || !this.entityHost.getNavigator().noPath();
    069        }
    070
    071        /**
    072         * Resets the task
    073         */
    074        public void resetTask()
    075        {
    076            this.attackTarget = null;
    077            this.field_75318_f = 0;
    078        }
    079
    080        /**
    081         * Updates the task
    082         */
    083        public void updateTask()
    084        {
    085            double var1 = this.entityHost.getDistanceSq(this.attackTarget.posX, this.attackTarget.boundingBox.minY, this.attackTarget.posZ);
    086            boolean var3 = this.entityHost.getEntitySenses().canSee(this.attackTarget);
    087
    088            if (var3)
    089            {
    090                ++this.field_75318_f;
    091            }
    092            else
    093            {
    094                this.field_75318_f = 0;
    095            }
    096
    097            if (var1 <= (double)this.field_82642_h && this.field_75318_f >= 20)
    098            {
    099                this.entityHost.getNavigator().clearPathEntity();
    100            }
    101            else
    102            {
    103                this.entityHost.getNavigator().tryMoveToEntityLiving(this.attackTarget, this.entityMoveSpeed);
    104            }
    105
    106            this.entityHost.getLookHelper().setLookPositionWithEntity(this.attackTarget, 30.0F, 30.0F);
    107            this.rangedAttackTime = Math.max(this.rangedAttackTime - 1, 0);
    108
    109            if (this.rangedAttackTime <= 0)
    110            {
    111                if (var1 <= (double)this.field_82642_h && var3)
    112                {
    113                    this.rangedAttackEntityHost.attackEntityWithRangedAttack(this.attackTarget);
    114                    this.rangedAttackTime = this.maxRangedAttackTime;
    115                }
    116            }
    117        }
    118    }