public String getRoomLetter()
    {
       if(potion + fragment + trap > 1)
       {
          return "M";
       }
       else if(damagePotion == 1)
       {
          return "D";
       }
       else if(potion == 1)
       {
          return "P";
       }
       else if(trap == 1)
       {
          return "T";
       }
       else if(fragment == 1)
       {
          return "F";
       }
       else if(entrance)
       {
          return "I";
       }
       else if(exit)
       {
          return "O";
       }
       else
       {
          return " ";
       }
    }