tictactoe.java

我们学校的TicTacToe的java作业描述

/*
  Written by: YG
  First written: 15/10/06
  Last modified: 15/10/06
*/

import sheffield.*;

public class TicTacToe {
    public static void main(String[] args) {
	EasyReader keyboard = new EasyReader();

	// self introduction by the algorithm
	System.out.println("Hello.  I'm Hal.  I play a tic-tac-toe with you.");
	String playerName = keyboard.readString("  May I ask your name? ");
	System.out.println("Hello, " + playerName + ".\n");

	// choose the grid dimension
	System.out.println("The grid dimension must be between 3 and 9.");
	int d = keyboard.readInt("  Please enter the dimension: ");

	// choose the play level
	System.out.println();
	System.out.println("You can be a beginner (1) or a master (2).");
	int l = keyboard.readInt("  Please choose the player level: ");

	// choose the player's mark
	System.out.println();
	System.out.println("\'x\': plays first, \'o\': plays second.");
	String p = keyboard.readString("  Please choose your symbol: ");

	// create a grid
	TicTacGrid grid = new TicTacGrid(d, l, p);
	System.out.println();
	System.out.print("You may choose a box using the combination of two ");
	System.out.print("characters (no space) -- a digit between 1 and ");
	System.out.print(d + " (x-axis, from left to right), followed by ");
	System.out.print("a lower case letter between \'a\' and \'");
	System.out.print((char)((int)'a' + d - 1) + "\' ");
	System.out.println("(y-axis, from bottom to top).");

	// the player has chosen 'o', so start by the algorithm
	if (p.equals("o")) {
	    String s = grid.algorithmDoes();
	    System.out.println("  Hal: " + s);
	}

	// the game goes on
	int winner = -1;
	while (winner<0) {

	    // move by the player
	    boolean flag = false;
	    do {
		String s = keyboard.readString("  " + playerName + ": ");
		flag = grid.playerDoes(s);
	    } while (flag==false);

	    // test if the game is over
	    winner = grid.gameOver();

	    // move by the algorithm
	    if (winner<0) {
		String s = grid.algorithmDoes();
		System.out.println("  Hal: " + s);
	    }

	    // test if the game is over
	    winner = grid.gameOver();
	}

	// display the winner
	switch (winner) {
	case TicTacGrid.EMPTY:
	    System.out.println("\ngame over -- draw.");
	    break;
	case TicTacGrid.CROSS:
	    System.out.println("\ngame over -- \'x\' won.");
	    break;
	case TicTacGrid.CIRCLE:
	    System.out.println("\ngame over -- \'o\' won.");
	    break;
	default:
	    System.out.println("\nunexpected error.");
	}
    }
}