EntityAIRangedRunFromMelee.java

/*
 * This file is part of Matter Overdrive
 * Copyright (c) 2015., Simeon Radivoev, All rights reserved.
 *
 * Matter Overdrive is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Matter Overdrive is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Matter Overdrive.  If not, see <http://www.gnu.org/licenses>.
 */

package matteroverdrive.entity.ai;

import net.minecraft.entity.EntityCreature;
import net.minecraft.entity.ai.EntityAIBase;
import net.minecraft.entity.ai.RandomPositionGenerator;
import net.minecraft.util.Vec3;

/**
 * Created by Simeon on 12/11/2015.
 */
public class EntityAIRangedRunFromMelee extends EntityAIBase
{
    private double minDistanceSq;
    private EntityCreature theEntity;
    private double moveSpeed;
    Vec3 destinaton;

    public EntityAIRangedRunFromMelee(EntityCreature theEntity,double moveSpeed)
    {
        this.theEntity = theEntity;
        this.moveSpeed = moveSpeed;
        //setMutexBits(1);
    }

    @Override
    public boolean shouldExecute()
    {
        if(this.theEntity.getAttackTarget() != null && this.theEntity.getNavigator().noPath())
        {
            double sqDistanceToTargetSq = this.theEntity.getDistanceSqToEntity(this.theEntity.getAttackTarget());
            if (sqDistanceToTargetSq+4 < minDistanceSq)
            {
                int distanceToRun = (int) Math.sqrt(minDistanceSq - sqDistanceToTargetSq);
                destinaton = RandomPositionGenerator.findRandomTargetBlockAwayFrom(this.theEntity, distanceToRun, 4,Vec3.createVectorHelper(this.theEntity.getAttackTarget().posX,this.theEntity.getAttackTarget().posY,this.theEntity.getAttackTarget().posZ));
                return destinaton != null;
            }
        }
        return false;
    }

    @Override
    public void startExecuting()
    {
        if (destinaton != null)
        {
            this.theEntity.getNavigator().tryMoveToXYZ(destinaton.xCoord, destinaton.yCoord, destinaton.zCoord,moveSpeed);
        }
    }

    @Override
    public boolean continueExecuting()
    {
        return !this.theEntity.getNavigator().noPath();
    }

    public void setMinDistance(double minDistance)
    {
        this.minDistanceSq = minDistance*minDistance;
    }

    public void setMoveSpeed(double moveSpeed)
    {
        this.moveSpeed = moveSpeed;
    }
}