001package net.minecraft.entity.ai;
002
003import java.util.List;
004import net.minecraft.entity.Entity;
005import net.minecraft.entity.EntityCreature;
006import net.minecraft.entity.passive.EntityTameable;
007import net.minecraft.entity.player.EntityPlayer;
008import net.minecraft.pathfinding.PathEntity;
009import net.minecraft.pathfinding.PathNavigate;
010import net.minecraft.util.Vec3;
011
012public class EntityAIAvoidEntity extends EntityAIBase
013{
014    /** The entity we are attached to */
015    private EntityCreature theEntity;
016    private float farSpeed;
017    private float nearSpeed;
018    private Entity closestLivingEntity;
019    private float distanceFromEntity;
020
021    /** The PathEntity of our entity */
022    private PathEntity entityPathEntity;
023
024    /** The PathNavigate of our entity */
025    private PathNavigate entityPathNavigate;
026
027    /** The class of the entity we should avoid */
028    private Class targetEntityClass;
029
030    public EntityAIAvoidEntity(EntityCreature par1EntityCreature, Class par2Class, float par3, float par4, float par5)
031    {
032        this.theEntity = par1EntityCreature;
033        this.targetEntityClass = par2Class;
034        this.distanceFromEntity = par3;
035        this.farSpeed = par4;
036        this.nearSpeed = par5;
037        this.entityPathNavigate = par1EntityCreature.getNavigator();
038        this.setMutexBits(1);
039    }
040
041    /**
042     * Returns whether the EntityAIBase should begin execution.
043     */
044    public boolean shouldExecute()
045    {
046        if (this.targetEntityClass == EntityPlayer.class)
047        {
048            if (this.theEntity instanceof EntityTameable && ((EntityTameable)this.theEntity).isTamed())
049            {
050                return false;
051            }
052
053            this.closestLivingEntity = this.theEntity.worldObj.getClosestPlayerToEntity(this.theEntity, (double)this.distanceFromEntity);
054
055            if (this.closestLivingEntity == null)
056            {
057                return false;
058            }
059        }
060        else
061        {
062            List var1 = this.theEntity.worldObj.getEntitiesWithinAABB(this.targetEntityClass, this.theEntity.boundingBox.expand((double)this.distanceFromEntity, 3.0D, (double)this.distanceFromEntity));
063
064            if (var1.isEmpty())
065            {
066                return false;
067            }
068
069            this.closestLivingEntity = (Entity)var1.get(0);
070        }
071
072        if (!this.theEntity.getEntitySenses().canSee(this.closestLivingEntity))
073        {
074            return false;
075        }
076        else
077        {
078            Vec3 var2 = RandomPositionGenerator.findRandomTargetBlockAwayFrom(this.theEntity, 16, 7, this.theEntity.worldObj.getWorldVec3Pool().getVecFromPool(this.closestLivingEntity.posX, this.closestLivingEntity.posY, this.closestLivingEntity.posZ));
079
080            if (var2 == null)
081            {
082                return false;
083            }
084            else if (this.closestLivingEntity.getDistanceSq(var2.xCoord, var2.yCoord, var2.zCoord) < this.closestLivingEntity.getDistanceSqToEntity(this.theEntity))
085            {
086                return false;
087            }
088            else
089            {
090                this.entityPathEntity = this.entityPathNavigate.getPathToXYZ(var2.xCoord, var2.yCoord, var2.zCoord);
091                return this.entityPathEntity == null ? false : this.entityPathEntity.isDestinationSame(var2);
092            }
093        }
094    }
095
096    /**
097     * Returns whether an in-progress EntityAIBase should continue executing
098     */
099    public boolean continueExecuting()
100    {
101        return !this.entityPathNavigate.noPath();
102    }
103
104    /**
105     * Execute a one shot task or start executing a continuous task
106     */
107    public void startExecuting()
108    {
109        this.entityPathNavigate.setPath(this.entityPathEntity, this.farSpeed);
110    }
111
112    /**
113     * Resets the task
114     */
115    public void resetTask()
116    {
117        this.closestLivingEntity = null;
118    }
119
120    /**
121     * Updates the task
122     */
123    public void updateTask()
124    {
125        if (this.theEntity.getDistanceSqToEntity(this.closestLivingEntity) < 49.0D)
126        {
127            this.theEntity.getNavigator().setSpeed(this.nearSpeed);
128        }
129        else
130        {
131            this.theEntity.getNavigator().setSpeed(this.farSpeed);
132        }
133    }
134}