craps.java

北京邮电大学牛导的 JAVA课件课件及相关资料

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
public class Craps extends JApplet implements ActionListener 
{
    final int WON = 0, LOST = 1, CONTINUE = 2;
    boolean firstRoll = true;
    int sumofDice = 0;
    int myPoint = 0;
    int gameStatus = CONTINUE;
    
    JLabel die1Label, die2Label, sumLabel, pointLabel;
    JTextField die1Field, die2Field, sumField, pointField;
    JButton rollButton;
    
    /** Creates a new instance of Craps */
    public void init() 
    {
        Container container = getContentPane();
        container.setLayout(new FlowLayout());
        die1Label = new JLabel("Die 1");
        container.add(die1Label);
        die1Field = new JTextField(10);
        die1Field.setEditable(false);
        container.add(die1Field);
        
        die2Label = new JLabel("Die 2");
        container.add(die2Label);
        die2Field = new JTextField(10);
        die2Field.setEditable(false);
        container.add(die2Field);
        
        sumLabel = new JLabel("Sum is");
        container.add(sumLabel);
        sumField = new JTextField(10);
        sumField.setEditable(false);
        container.add(sumField);
        
        pointLabel = new JLabel("Point is");
        container.add(pointLabel);
        pointField = new JTextField(10);
        pointField.setEditable(false);
        container.add(pointField);
        
        rollButton = new JButton("Roll Dice");
        rollButton.addActionListener(this);
        container.add(rollButton);
    }
        
    
    
    public void actionPerformed(ActionEvent e)
    {
        sumofDice = rollDice();
        if(firstRoll)
        {
            switch(sumofDice)
            {
                case 7:
                case 11:
                    //firstRoll = false;
                    gameStatus = WON;
                    break;
                case 2:
                case 3:
                case 12:
                    //firstRoll = false;
                    pointField.setText(" ");
                    gameStatus = LOST;
                    break;
                default:
                    gameStatus = CONTINUE;
                    myPoint = sumofDice;
                    pointField.setText(Integer.toString(myPoint));
                    firstRoll = false;
                    break;
            }
        }
            else
            {
                if(sumofDice == myPoint)
                gameStatus = WON;
                else
                    if (sumofDice == 7)
                        gameStatus = LOST;              
            }
            displayMessage();                   
                    
        
    }
    
    public int rollDice()
    {
        int die1, die2, sum;
        die1 = 1 + (int)(Math.random()*6);
        die2 = 1 + (int)(Math.random()*6);
        sum = die1 + die2;
        die1Field.setText(Integer.toString(die1));
        die2Field.setText(Integer.toString(die2));
        sumField.setText(Integer.toString(sum));
        return sum;
    }
    
    public void displayMessage()
    {
        if( gameStatus == CONTINUE)
            showStatus("Roll again!");
        else
        {
            if(gameStatus == WON)
                showStatus(" player wins. Click Roll Dice to play again.");
            else
                showStatus("player loses. Click Roll Dice to play again.");
            firstRoll = true;
        }
    }

    

}