/**
 * -------------------------------------------------------------------|
 * Rock, paper, scissors game class.
 * 
 * @author (Dustin Baker) 
 * @version (10/31/07)
 */

import java.util.Scanner;

class Game
{
    private String response;
    private Scanner scanIn;
    private Player player0;
    private Player player1;
    
    public Game()
    {
        this.response = "";
    }
    
    public void go()
    {
        Player player0 = new Player();
        Player player1 = new Player();
        Scanner scanIn = new Scanner (System.in);
        int validInput = 0;
        System.out.println("Would you like to play a game of " + 
            "rock, paper, scissors?");
        while (validInput == 0)
        {
            String response = scanIn.nextLine();
            if (response.toLowerCase().equals("yes"))
            {
                playGame();
                System.out.println("");
                System.out.println("Would you like to play a game " + 
                    "of rock, paper, scissors?");
            }
            else if (response.toLowerCase().equals("no"))
            {
                quit();
                validInput = 1;
            }
            else
            {
                System.out.println("Please enter yes or no only.");   
            }
        }   
    }
    
    private void playGame()
    {
        player0.choose();
        player1.choose();
        System.out.println(this.toString());
        if (player0.ties(player1) == true)
        {
            System.out.println("Result: tie");
        }
        else if (player0.beats(player1) == true)
        {
            System.out.println("Result: player0 won");
        }
        else
        {
            System.out.println("Result: player1 won");
        }
    }
    
    public String toString()
    {
        return "(player0 choice: " + player0.toString() + 
            ", player1 choice: " + player1.toString() + ")";
    }
    
    private void quit()
    {
        System.out.println("Thanks for playing.");
    }
}


/**
 * -------------------------------------------------------------------|
 * Rock, paper, scissors player class.
 */

class Player
{    
    private String choice;
    
    public Player()
    {
        this.choice = "";
    }
    
    
    public void choose()
    {
        String choice;
        final int NUM_RANGE = 3;
        int choiceNum = (int) (NUM_RANGE * Math.random());
        if (choiceNum == 0)
        {
            this.choice = "rock";
        }
        else if (choiceNum == 1)
        {
            this.choice = "paper";
        }
        else 
        {
            this.choice = "scissors";
        }
    }  
    
    public boolean beats(Player p2)
    {
        if (this.equals("rock") && p2.equals("scissors"))
        {
            return true;
        }
        else if (this.equals("paper") && p2.equals("rock"))
        {
            return true;
        }
        else if (this.equals("scissors") && p2.equals("paper"))
        {
            return true;
        }
        else
        {
            return false;
        }
    }
    
    public boolean ties(Player p2)
    {
        if (this.equals(p2))
        {
            return true;
        }
        else
        {
            return true;
        }
    }
    
    public String toString()
    {
        if (this.choice.equals(""))
        {
            return "none";
        }
        else
        {
            return this.choice;
        }
    }  
}


/**
 * -------------------------------------------------------------------|
 * Rock, paper, scissors driver.
 */

public class Driver
{
    public static void main(String[] args)
    {
        Game newGame = new Game();
        newGame.go();
    }
}