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