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  else if(this->Data()->type == ENF::Aggressive)
          {
UTIL_PTR_VECTOR_FOREACH(this->map->npcs, NPC, npc)
        {
int distance = util::path_length(npc->x, npc->y, this->x, this->y);
 if (npc->Data()->type == ENF::Pet && distance > 1 && distance < 5 && npc->alive)     //?
            {
    int xdiff = this->x - npc->x;
    int ydiff = this->y - npc->y;
    int absxdiff = std::abs(xdiff);
    int absydiff = std::abs(ydiff);

 if ((absxdiff == 1 && absydiff == 0) || (absxdiff == 0 && absydiff == 1) || (absxdiff == 0 && absydiff == 0))
     {
           //if(attacker != this->owner)
           //this->Attack(this->owner);
      return;
     }

        else if (absxdiff > absydiff)
        {
            if (xdiff < 0)
            {
                this->direction = DIRECTION_RIGHT;
            }
            else
            {
                this->direction = DIRECTION_LEFT;
            }
        }
        else
        {
            if (ydiff < 0)
            {
                this->direction = DIRECTION_DOWN;
            }
            else
            {
                this->direction = DIRECTION_UP;
            }
        }

        if (!this->Walk(this->direction))
        {
            this->Walk(static_cast<Direction>(util::rand(0,3)));
        }
     return;
        }
        }
  if (this->Data()->type == ENF::Aggressive || this->Data()->type == ENF::Passive)
    {
     UTIL_PTR_LIST_FOREACH(this->map->characters, Character, character)
        {
            UTIL_PTR_VECTOR_FOREACH(this->map->npcs, NPC, npc)
            {
                int distance = util::path_length(npc->x, npc->y, this->x, this->y);
                 if ((distance > 0 && distance < 2 && npc->Data()->type == ENF::Pet && npc->alive))
            {
 if(distance < 2)
            {
        int xdiff = this->x - npc->x;
        int ydiff = this->y - npc->y;

        if (std::abs(xdiff) > std::abs(ydiff))
        {
            if (xdiff < 0)
            {
                this->direction = DIRECTION_RIGHT;
            }
            else
            {
                this->direction = DIRECTION_LEFT;
            }
        }
        else
        {
            if (ydiff < 0)
            {
                this->direction = DIRECTION_DOWN;
            }
            else
            {
                this->direction = DIRECTION_UP;
            }
        }

        PacketBuilder builder(PACKET_NPC, PACKET_PLAYER);
        builder.AddByte(255);
        builder.AddChar(this->index);
        builder.AddChar(1 + (character->hp == 0));
        builder.AddChar(this->direction);
        builder.AddShort(0);
        builder.AddThree(0);
        builder.AddThree(int(double(character->hp) / double(character->maxhp) * 100.0));
        builder.AddByte(255);
        builder.AddByte(255);

        UTIL_PTR_LIST_FOREACH(this->map->characters, Character, character)
        {
            if (*character == npc->owner || !character->InRange(this))
            {
                continue;
            }

            character->player->client->SendBuilder(builder);
        }
        npc->owner->player->client->SendBuilder(builder);
        }
            int amount = util::rand(this->Data()->mindam, this->Data()->maxdam + static_cast<int>(this->map->world->config["NPCAdjustMaxDam"]));
                        double rand = util::rand(0.0, 1.0);
                        // Checks if target is facing you
                        bool critical = std::abs(int(npc->direction) - npc->owner->direction) != 2 || rand < static_cast<double>(this->map->world->config["CriticalRate"]);

                        std::tr1::unordered_map<std::string, double> formula_vars;

                        npc->owner->FormulaVars(formula_vars);
                        npc->FormulaVars(formula_vars, "target_");
                        formula_vars["modifier"] = this->map->world->config["MobRate"];
                        formula_vars["damage"] = amount;
                        formula_vars["critical"] = critical;

                        amount = rpn_eval(rpn_parse(this->map->world->formulas_config["damage"]), formula_vars);
                        double hit_rate = rpn_eval(rpn_parse(this->map->world->formulas_config["hit_rate"]), formula_vars);

                        if (rand > hit_rate)
                        {
                            amount = 0;
                        }

                        amount = std::max(amount, 0);

                        int limitamount = std::min(amount, int(npc->hp));

                        if (this->map->world->config["LimitDamage"])
                        {
                            amount = limitamount;
                        }

                        npc->Damage(npc->owner, amount);

                        return;
                    }
                }
            }
        }
    }