Ruby Warrior 答案

Ruby Warrior是一个用Ruby代码控制一个小人打怪升级刷装备的小游戏，可以帮助小伙伴们了解Ruby

传送门

最近正好有同事想了解一下Ruby，就推荐给他们这个小游戏，同时把我的答案也分享一下，大家可以交流一下更漂亮的写法。

# level 1
class Player
  def play_turn(warrior)
    warrior.walk!
  end
end

# level 2
class Player
  def play_turn(warrior)
    warrior.feel.empty? ? warrior.walk! : warrior.attack!
  end
end

# level 3
class Player
  def play_turn(warrior)
    if warrior.feel.empty? 
      warrior.health < 10 ? warrior.rest! : warrior.walk! 
    else
      warrior.attack!
    end
  end
end

# level 4
class Player
  def play_turn(warrior)
    @health ||= warrior.health
    if warrior.feel.empty? 
      warrior.health < 15 && @health <= warrior.health  ? warrior.rest! : warrior.walk! 
    else
      warrior.attack!
    end
    @health = warrior.health
  end
end

# level 5
class Player
  def play_turn(warrior)
    @health ||= warrior.health
    if warrior.feel.empty? 
      warrior.health < 15 && @health <= warrior.health  ? warrior.rest! : warrior.walk! 
    else
      warrior.feel.enemy? ? warrior.attack! : warrior.rescue!
    end
    @health = warrior.health
  end
end

# level 6
class Player
  def play_turn(warrior)
    @backward = true if @backward.nil?
    if @backward
      if warrior.feel(:backward).captive?
        @backward = false
        return warrior.rescue! :backward
      else
        return warrior.walk! :backward
      end
    end
    @health ||= warrior.health
    if warrior.feel.empty? 
      if warrior.health < 20 && @health <= warrior.health
        warrior.rest!
      else
        direction = warrior.health < 10 ? :backward : :forward
        warrior.walk! direction
      end
    else
      warrior.feel.enemy? ? warrior.attack! : warrior.rescue!
    end
    @health = warrior.health
  end
end

# level 7
class Player
  def play_turn(warrior)
    @health ||= warrior.health
    if warrior.feel.empty? 
      if warrior.health < 20 && @health <= warrior.health
        warrior.rest!
      else
        direction = warrior.health < 10 ? :backward : :forward
        warrior.walk! direction
      end
    else
      if warrior.feel.enemy?
        warrior.attack!
      elsif warrior.feel.wall?
        warrior.pivot!
      else   
         warrior.rescue!
      end
    end
    @health = warrior.health
  end
end

# level 8
class Player
  def play_turn(warrior)
    warrior.look.each do |space|
      break if space.captive?
      return warrior.shoot! if space.enemy?
    end
    warrior.feel.captive? ? warrior.rescue! : warrior.walk!
  end
end

# level 9
class Player
  
  def initialize
    @first_turn, @archer_dead, @melee = true, false, false
  end
  
  def archer_dead?; @archer_dead; end
  
  def play_turn(warrior)
    # Kill archer with hardcode
    if @first_turn
      @first_turn = false
      return warrior.pivot!
    end
    if !archer_dead?
      if warrior.feel.enemy?
        @melee = true
        return warrior.attack!
      else # feel.empty?
        if @melee
          @archer_dead = true
          return warrior.pivot!
        else
          return warrior.walk!
        end
      end
    end
    warrior.look.each do |space|
      break if space.captive?
      return warrior.shoot! if space.enemy?
    end
    if warrior.feel.captive?
      warrior.rescue!
    elsif warrior.feel.wall?
      warrior.pivot!
    else
      warrior.walk!
    end
  end
end