Update

Assets/Scripts/GameController.cs

@@ -32,14 +32,10 @@ namespace Assets.Scripts
                 Screen.height, 0)).x;
             var leftBorder = Camera.main.ScreenToWorldPoint(new Vector3(0, 0, 0)).x;
 
-            if (!(rightBorder > (size.x*mult) - 2)) return;
+            if (!(rightBorder > (size.x*mult) - 5)) return;
             BG = (GameObject) Instantiate(BG, new Vector3(size.x + tra.position.x - .5f, tra.position.y, 0), Quaternion.identity);
             tra = BG.GetComponent<Transform>();
             mult++;
-            // _ca.Step(rightBorder);
-
-            // DrawMap(leftBorder, rightBorder);
-            // Debug.Log(_map);
         }
     }
 }
\ No newline at end of file

Assets/Scripts/UIController.cs

@@ -39,8 +39,19 @@ public class UIController : MonoBehaviour
 	    NbVials.text = _player.NbVials.ToString();
 
 	    DisplayBattery();
+	    HandlePowerUps();
 	}
 
+    private void HandlePowerUps()
+    {
+        if (_player.NbVials >= 5)
+            Vial1.enabled = true;
+        if (_player.NbVials >= 10)
+            Vial2.enabled = true;
+        if (_player.NbVials >= 15)
+            Vial3.enabled = true;
+    }
+
     private void DisplayBattery()
     {
         Battery.sprite = BatteryImages[_player.Battery/8];