php模板模式(template design)

没有写停止条件，所以会一直运行哟。

<?php
/*
The template design pattern defines the program skeleton of an algorithm in a
method. It lets us, via use of class overriding, redefine certain steps of an algorithm
without really changing the algorithm's structure.
*/

abstract class Game {
    private $playerCount;

    abstract function initializeGame();
    abstract function makePlay($player);
    abstract function endOfGame();
    abstract function printWinner();

    public function playOneGame($playerCount) {
        $this->playerCount = $playerCount;
        $this->initializeGame();
        $j = 0;
        while (!$this->endOfGame()) {
            $this->makePlay($j);
            $j = ($j + 1) % $playerCount;
        }
        $this->printWinner();
    }
}

class Monopoly extends Game {
    public function initializeGame() {
        echo 'Monopoly_initializeGame.<br/>';
    }

    public function makePlay($player) {
        echo 'Monopoly_makePlay.<br/>';
    }

    public function endOfGame(){
        echo 'Monopoly_endOfGame.<br/>';
    }

    public function printWinner(){
        echo 'Monopoly_printWinner.<br/>';
    }
}

class Chess extends Game {
    public function initializeGame() {
        echo 'Chess_initializeGame.<br/>';
    }

    public function makePlay($player) {
        echo 'Chess_makePlay.<br/>';
    }

    public function endOfGame(){
        echo 'Chess_endOfGame.<br/>';
    }

    public function printWinner(){
        echo 'Chess_printWinner.<br/>';
    }
}

$game = new Chess();
$game->playOneGame(2);

$game = new Monopoly();
$game->playOneGame(4);

?>