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增加级别

级别是另一个 JavaScript 对象:

const Level1 = {
  // Level definition.
};

让我们开始写一个针对我们级别的描述和提示:

const Level1 = {
  description:
    "You've entered the ancient castle of Eastwatch to escape from a blizzard. But it's deadly cold inside too.",
  tip:
    "Call `warrior.walk()` to walk forward in the Player's `playTurn` method.",
};

我们还需要定义两个数字: 时间奖励和高手评分榜。 时间奖励是由玩家赚取的, 这取决于他们完成级别的速度 (它逐回合递减, 直到为零)。 另一方面, 高手评分榜用于计算水平等级 (仅在史诗模式下)。 任何得分大于或等于高手得分榜将得到一个 S。让我们添加这些数字:

const Level1 = {
  description:
    "You've entered the ancient castle of Eastwatch to escape from a blizzard. But it's deadly cold inside too.",
  tip:
    "Call `warrior.walk()` to walk forward in the Player's `playTurn` method.",
  timeBonus: 15,
  aceScore: 10,
};

These two numbers will need to be fine-tuned when play testing the tower. For this guide, we've already done that.

The next thing to do is to define the floor of the level, starting by its size:

const Level1 = {
  description:
    "You've entered the ancient castle of Eastwatch to escape from a blizzard. But it's deadly cold inside too.",
  tip:
    "Call `warrior.walk()` to walk forward in the Player's `playTurn` method.",
  timeBonus: 15,
  aceScore: 10,
  floor: {
    size: {
      width: 8,
      height: 1,
    },
  },
};

Then, we need to position the stairs so that the Warrior can move to the next level:

const Level1 = {
  description:
    "You've entered the ancient castle of Eastwatch to escape from a blizzard. But it's deadly cold inside too.",
  tip:
    "Call `warrior.walk()` to walk forward in the Player's `playTurn` method.",
  timeBonus: 15,
  aceScore: 10,
  floor: {
    size: {
      width: 8,
      height: 1,
    },
    stairs: {
      x: 7,
      y: 0,
    },
  },
};

Speaking of warrior, let's define the Warrior for this level:

const Level1 = {
  description:
    "You've entered the ancient castle of Eastwatch to escape from a blizzard. But it's deadly cold inside too.",
  tip:
    "Call `warrior.walk()` to walk forward in the Player's `playTurn` method.",
  timeBonus: 15,
  aceScore: 10,
  floor: {
    size: {
      width: 8,
      height: 1,
    },
    stairs: {
      x: 7,
      y: 0,
    },
    warrior: {
      character: '@',
      maxHealth: 20,
      position: {
        x: 0,
        y: 0,
        facing: 'east',
      },
    },
  },
};

With that, the level is complete. But before continuing, let's define another level:

const Level2 = {
  description:
    'The cold became more intense. In the distance, you see a pair of deep and blue eyes, a blue that burns like ice.',
  tip:
    "Use `warrior.feel().isEmpty()` to see if there's anything in front of you, and `warrior.attack()` to fight it. Remember, you can only do one action per turn.",
  clue:
    'Add an if/else condition using `warrior.feel().isEmpty()` to decide whether to attack or walk.',
  timeBonus: 20,
  aceScore: 26,
  floor: {
    size: {
      width: 8,
      height: 1,
    },
    stairs: {
      x: 7,
      y: 0,
    },
    warrior: {
      character: '@',
      maxHealth: 20,
      position: {
        x: 0,
        y: 0,
        facing: 'east',
      },
    },
  },
};

As things started to get more challenging for the player, this time we added a clue. Clues are optional and will only be shown upon demand.

Now we need to add these two levels to the tower. Levels are added to the levels array of the tower:

module.exports = {
  name: 'Game of Thrones',
  description:
    'There is only one war that matters: the Great War. And it is here.',
  levels: [Level1, Level2],
};

Superb! But as you could have noticed, we instruct the player to call warrior.attack(), warrior.feel(), and warrior.walk() but we haven't taught the Warrior how to do any of that. Let's do that next!