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HomeBackend DevelopmentPHP Tutorial25个PHP游戏编程脚本代码_PHP

简单的掷骰器

许多游戏和游戏系统都需要骰子。让我们先从简单的部分入手:掷一个六面骰子。实际上,滚动一个六面骰子就是从 1 到 6 之间选择一个随机数字。在 PHP 中,这十分简单:

echo rand(1,6);

在许多情况下,这基本上很简单。但是在处理机率游戏时,我们需要一些更好的实现。

PHP 提供了更好的随机数字生成器:

mt_rand()

在不深入研究两者差别的情况下,可以认为 mt_rand 是一个更快、更好的随机数字生成器:

echo mt_rand(1,6);

如果把该随机数字生成器放入函数中,则效果会更好。

清单 1. 使用 mt_rand() 随机数字生成器函数

function roll () {
  return mt_rand(1,6);
  }
  echo roll();

然后可以把需要滚动的骰子类型作为参数传递给函数。

清单 2. 将骰子类型作为参数传递

function roll ($sides) {
  return mt_rand(1,$sides);
  }
  echo roll(6); // roll a six-sided die
  echo roll(10); // roll a ten-sided die
  echo roll(20); // roll a twenty-sided die

从这里开始,我们可以继续根据需要一次滚动多个骰子,返回结果数组;也可以一次性滚动多个不同类型的骰子。但是大多数任务都可以使用这个简单的脚本。

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