// File:    Dice.java
// T Balls Feb 1998
// Simulate the throwing of some dice
// and show the results graphically

import java.awt.*;
import java.util.Random;

public class Dice extends Frame
{  public Dice( int noOfDice )
   {  dice = noOfDice;
      setTitle( "Dice: " + dice );
      setSize( 400, 300 );
      results = new int[ 5*dice+1 ];
      throwDice();   

      setVisible( true );
   }
   
   private int dice;
   private int[] results;
   Random roll = new Random();

   // toss dice 1000 times
   private void throwDice()
   {  int loop;
      for( loop = 0; loop < 1000; loop += 1 )
      {  int score = 0;
         for( int die = 0; die < dice; die += 1 )
         {  int value = Math.abs(roll.nextInt()) % 6 + 1;
            score += value;
         }
         results[ score-dice ] += 1;
      }
   }

   public void paint( Graphics g )
   {  Dimension d = getSize();
      int left = 10;
      int bottom = d.height - 20;
      int width = d.width-20;
      int height = d.height - 50;
      int die;
      int max=0;
      for( die = 0; die < results.length; die += 1 )
      {  if( max < results[die] )
         {  max = results[die];
         }
      }
      int vertUnit = height/max;
      int horizUnit = width/(5*dice+1);
      for( die = 0; die < results.length; die += 1 )
      {  g.drawRect( left+die*horizUnit,
                   bottom-results[die]*vertUnit,
                   horizUnit,
                   results[die]*vertUnit );
      }            
   }
}

class TwoDice
{  public static void main( String[] args )
   {  new Dice( 2 );
   }
}

class ThreeDice
{  public static void main( String[] args )
   {  new Dice( 3 );
   }
}

class FourDice
{  public static void main( String[] args )
   {  new Dice( 4 );
   }
}

class FiveDice
{  public static void main( String[] args )
   {  new Dice( 5 );
   }
}

class SixDice
{  public static void main( String[] args )
   {  new Dice( 6 );
   }
}