    001    package net.minecraft.entity.ai;
    002
    003    import net.minecraft.entity.EntityLiving;
    004    import net.minecraft.util.MathHelper;
    005
    006    public class EntityAILeapAtTarget extends EntityAIBase
    007    {
    008        /** The entity that is leaping. */
    009        EntityLiving leaper;
    010
    011        /** The entity that the leaper is leaping towards. */
    012        EntityLiving leapTarget;
    013
    014        /** The entity's motionY after leaping. */
    015        float leapMotionY;
    016
    017        public EntityAILeapAtTarget(EntityLiving par1EntityLiving, float par2)
    018        {
    019            this.leaper = par1EntityLiving;
    020            this.leapMotionY = par2;
    021            this.setMutexBits(5);
    022        }
    023
    024        /**
    025         * Returns whether the EntityAIBase should begin execution.
    026         */
    027        public boolean shouldExecute()
    028        {
    029            this.leapTarget = this.leaper.getAttackTarget();
    030
    031            if (this.leapTarget == null)
    032            {
    033                return false;
    034            }
    035            else
    036            {
    037                double var1 = this.leaper.getDistanceSqToEntity(this.leapTarget);
    038                return var1 >= 4.0D && var1 <= 16.0D ? (!this.leaper.onGround ? false : this.leaper.getRNG().nextInt(5) == 0) : false;
    039            }
    040        }
    041
    042        /**
    043         * Returns whether an in-progress EntityAIBase should continue executing
    044         */
    045        public boolean continueExecuting()
    046        {
    047            return !this.leaper.onGround;
    048        }
    049
    050        /**
    051         * Execute a one shot task or start executing a continuous task
    052         */
    053        public void startExecuting()
    054        {
    055            double var1 = this.leapTarget.posX - this.leaper.posX;
    056            double var3 = this.leapTarget.posZ - this.leaper.posZ;
    057            float var5 = MathHelper.sqrt_double(var1 * var1 + var3 * var3);
    058            this.leaper.motionX += var1 / (double)var5 * 0.5D * 0.800000011920929D + this.leaper.motionX * 0.20000000298023224D;
    059            this.leaper.motionZ += var3 / (double)var5 * 0.5D * 0.800000011920929D + this.leaper.motionZ * 0.20000000298023224D;
    060            this.leaper.motionY = (double)this.leapMotionY;
    061        }
    062    }