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require "letters"
class Dude < Struct.new(*%i[ name hp damage armor ])
def attack!(dude)
damage = self.damage - dude.armor
damage = 1 unless damage > 0
dude.hp = dude.hp - damage
return unless dude.hp > 0
dude.attack!(self)
end
def equipped(equipment)
self.class.new(name, hp,
self.damage + equipment.damage_bonus,
self.armor + equipment.armor_bonus)
end
def win_against?(dude)
self_hp = self.hp
dude_hp = dude.hp
self.attack!(dude)
result = (self.hp > 0)
self.hp = self_hp
dude.hp = dude_hp
result
end
end
Item = Struct.new(*%i[ name cost damage armor ])
NULL_ITEM = Item.new("Nothing", 0, 0, 0)
class Equipment < Struct.new(*%i[ weapon armor rings ])
attr_accessor *%i[ cost damage_bonus armor_bonus ]
def initialize(*)
super
equipment = [self.weapon, self.armor].concat(self.rings)
self.cost = equipment.map(&:cost).inject(:+)
self.damage_bonus = equipment.map(&:damage).inject(:+)
self.armor_bonus = equipment.map(&:armor).inject(:+)
end
end
weapons, armors, rings = DATA.read.split("\n\n").map {|set|
set.split("\n").drop(1).map {|attrs|
attrs = attrs.split(/\s+/)
name = attrs[0..-4].join(" ")
attrs = attrs[-3..-1].map(&:to_i)
Item.new(name, *attrs)
}
}
armors << NULL_ITEM
rings << NULL_ITEM
rings = rings.combination(2).to_a
rings << [NULL_ITEM, NULL_ITEM]
equipments = weapons.flat_map {|weapon|
armors.flat_map {|armor|
rings.flat_map {|rings|
Equipment.new(weapon, armor, rings)
}
}
}.sort_by {|e| -e.cost }
BOSS = Dude.new("boss", 100, 8, 2)
YOU = Dude.new("you", 100, 0, 0)
puts equipments.find {|e|
!YOU.equipped(e).win_against?(BOSS)
}.cost
__END__