tcr/java/src/game/ai/EntityAIFindEntityNearest.java

package game.ai;

import java.util.Collections;
import java.util.List;
import com.google.common.base.Predicate;

import game.entity.attributes.AttributeInstance;
import game.entity.attributes.Attributes;
import game.entity.types.EntityLiving;

public class EntityAIFindEntityNearest extends EntityAIBase
{
    private EntityLiving mob;
    private final Predicate<EntityLiving> field_179443_c;
    private final EntityAINearestAttackableTarget.Sorter field_179440_d;
    private EntityLiving target;
    private Class <? extends EntityLiving > field_179439_f;

    public EntityAIFindEntityNearest(EntityLiving mobIn, Class <? extends EntityLiving > p_i45884_2_)
    {
        this.mob = mobIn;
        this.field_179439_f = p_i45884_2_;

//        if (mobIn instanceof EntityCreature)
//        {
//        	Log.CONFIG.warn("Nutze NearestAttackableTargetGoal.class für PathfinderMob-Mobs!");
//        }

        this.field_179443_c = new Predicate<EntityLiving>()
        {
            public boolean apply(EntityLiving p_apply_1_)
            {
                double d0 = EntityAIFindEntityNearest.this.getFollowRange();

                if (p_apply_1_.isSneaking())
                {
                    d0 *= 0.800000011920929D;
                }

                return (double)p_apply_1_.getDistanceToEntity(EntityAIFindEntityNearest.this.mob) > d0 ? false : EntityAITarget.isSuitableTarget(EntityAIFindEntityNearest.this.mob, p_apply_1_, true);
            }
        };
        this.field_179440_d = new EntityAINearestAttackableTarget.Sorter(mobIn);
    }

    /**
     * Returns whether the EntityAIBase should begin execution.
     */
    public boolean shouldExecute()
    {
        double d0 = this.getFollowRange();
        List<EntityLiving> list = this.mob.worldObj.<EntityLiving>getEntitiesWithinAABB(this.field_179439_f, this.mob.getEntityBoundingBox().expand(d0, 4.0D, d0), this.field_179443_c);
        Collections.sort(list, this.field_179440_d);

        if (list.isEmpty())
        {
            return false;
        }
        else
        {
            this.target = (EntityLiving)list.get(0);
            return true;
        }
    }

    /**
     * Returns whether an in-progress EntityAIBase should continue executing
     */
    public boolean continueExecuting()
    {
        EntityLiving entitylivingbase = this.mob.getAttackTarget();

        if (entitylivingbase == null)
        {
            return false;
        }
        else if (!entitylivingbase.isEntityAlive())
        {
            return false;
        }
        else
        {
            double d0 = this.getFollowRange();
            return this.mob.getDistanceSqToEntity(entitylivingbase) <= d0 * d0; // ? false : !(entitylivingbase.isPlayer()) || !((EntityNPCMP)entitylivingbase).creative;
        }
    }

    /**
     * Execute a one shot task or start executing a continuous task
     */
    public void startExecuting()
    {
        this.mob.setAttackTarget(this.target);
        super.startExecuting();
    }

    /**
     * Resets the task
     */
    public void resetTask()
    {
        this.mob.setAttackTarget((EntityLiving)null);
        super.startExecuting();
    }

    protected double getFollowRange()
    {
        AttributeInstance iattributeinstance = this.mob.getEntityAttribute(Attributes.FOLLOW_RANGE);
        return iattributeinstance == null ? 16.0D : iattributeinstance.getAttributeValue();
    }
}