protected override void Start()
 {
     animator                = GetComponent <Animator>();
     r2                      = GetComponent <Rigidbody2D>();
     r2.gravityScale         = 0;
     r2.rotation             = 0;
     ScoreScipt4.scoreValue4 = 0;        //điểm của Bot3
     wall                    = GameObject.FindGameObjectsWithTag("Wall");
     floor                   = GameObject.FindGameObjectsWithTag("Floor");
     fire                    = GameObject.FindGameObjectsWithTag("Fire");
     this.createCost();
     graph = new SquareGrid(1, 1, 14, 14, costObject);
     initMap();
     axe    = GameObject.FindGameObjectWithTag("Axe");
     start  = new Location(transform.position.x, transform.position.y);
     goal   = new Location(axe.transform.position.x, axe.transform.position.y);
     astar  = new AStarSearch3(graph, start, goal, costObject);
     path   = astar.FindPath();
     deltaT = 1.0f * astar.dem / 80;
     base.Start();
 }
 private void Update()
 {
     if (flag == true)
     {
         if (flag2 == true)
         {
             flag2 = false;
             axe   = GameObject.FindGameObjectWithTag("Axe");
             fire  = GameObject.FindGameObjectsWithTag("Fire");
             start = new Location(transform.position.x, transform.position.y);
             goal  = new Location(axe.transform.position.x, axe.transform.position.y);
             this.createCost();
             graph = new SquareGrid(1, 1, 14, 14, costObject);
             astar = new AStarSearch3(graph, start, goal, costObject);
             path  = astar.FindPath();
             i     = 0;
         }
         time += Time.deltaTime;
         if (time > deltaT)
         {
             Tick();
             time  = 0;
             flag2 = true;
         }
     }
     if (flag == false)
     {
         axe = GameObject.FindGameObjectWithTag("Axe");
         if (axe == null)
         {
             fire = GameObject.FindGameObjectsWithTag("Fire");
             initMap();
             Instantiate(item, RandomPosition(), Quaternion.identity);
         }
         flag  = true;
         flag2 = true;
     }
 }