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增加塔層

塔層是另一個JavaScript物件：

const Level1 = {
  // Level definition.
};

讓我們開始為塔層寫上描述及提示：

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.",
};

我們還需要定義兩個數字：時間獎勵 (time bonus) 及王牌分數 (ace score)。 時間獎勵是取決於玩家完成塔層的速度所賺得的獎勵(這個獎勵會按回合遞減，直到零分)。 另一方面，王牌分數則是用來計算塔層的等級 (只限史詩模式)。 任何等如或大於王牌分數的成績都會得到S的評級，讓我們加入以下數字：

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,
};

這兩個數字需要我們測試塔層以進行仔細調整。在這份指南，我們已測試好數字。

下一步就是定義塔層的地面，由它的尺寸開始：

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,
    },
  },
};

然後，我們需要決定樓梯的位置，讓勇士能夠移動到下一層：

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,
    },
  },
};

既然提及到勇士，就讓我們定義這一層的勇士：

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',
      },
    },
  },
};

就這樣，這一層就完成了，不過在繼續之前，先讓我們定義另一個塔層：

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',
      },
    },
  },
};

由於勇士面對的挑戰越來越大，這次我們加了一個線索。線索是可選的，只會在有需要的時候才會顯示。

現在我們需要將這兩個塔層加到層塔了，將它們加到塔的levels陣列：

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

太出色了！ 但你或者都留意到，雖然我們指示了勇士召叫warrior.attack()， warrior.feel()及 warrior.walk()，但我們還未教他要做些什麼， 現在讓我們進行下一步吧！