// a small program to exercise the named timer
// Beth Katz, November 2002

public class NamedTimerPlay
{
   // initialize timer's name and time
   public static NamedTimer initializeTimer(String timerName, TimeInput ti)
   {
      System.out.print("Enter time for " + timerName 
                          + " in minutes:seconds => ");
      ti.getNextTime( );
      NamedTimer theTimer = new NamedTimer(timerName, ti.getMinutes( ), 
                                       ti.getSeconds( ));
      System.out.println( theTimer.toString( ) );
      return theTimer;      
   }

   // run some time off timer t
   public static void runOffTime(NamedTimer t, TimeInput ti)
   {
      System.out.print("Time " + t.getName( ) 
                          + " uses in minutes:seconds? ");
      ti.getNextTime( );
      t.subtract(ti.getMinutes( ), ti.getSeconds( ));
   }

   // print both timer's current values neatly
   public static void printTimers(NamedTimer white, Timer black)
   {
      System.out.println("       "
                         + white.toString( ) + "   "
                         + black.toString( ) ); 
   }

   public static void main(String[ ] args)
   {
      NamedTimer white;
      NamedTimer black;

      boolean blacksTurn = false;
      TimeInput ti = new TimeInput( );
    
      white = initializeTimer("White", ti);
      black = initializeTimer("Black", ti); 

      printTimers(white, black);

      while ( !(white.outOfTime( ) || black.outOfTime( )) ) {
         if (blacksTurn) {
            blacksTurn = false;
            runOffTime(black, ti);
         } else {
            blacksTurn = true;
            runOffTime(white, ti);
         }
         printTimers(white, black);
      }  

      if (white.outOfTime( )) {
         System.out.println("White ran out of time");
      } else {
         System.out.println("Black ran out of time");
      }
   }
}