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@kimroen
Created September 18, 2011 14:23
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Dragon for Lincoln
class Creature
def self.metaclass; class << self; self; end; end
def self.traits(*arr)
return @traits if arr.empty?
#1. Set up accessors for each variable
attr_accessor *arr
#2. Add a new class method to for each trait.
arr.each do |a|
metaclass.instance_eval do
define_method(a) do |val|
@traits ||= {}
@traits[a] = val
end
end
end
#3. For each monster, the initialize method
# should use the default number for each trait.
class_eval do
define_method(:initialize) do
self.class.traits.each do |k,v|
instance_variable_set("@#{k}", v)
end
end
end
end
#Creature attributes are read-only
traits :life, :strength, :charisma, :weapon
#This method applies a hit taken during a fight.
def hit(damage)
p_up = rand(charisma)
if p_up % 9 == 7
@life += p_up / 4
puts "[#{self.class} magick powers up #{p_up}!]"
end
@life -= damage
puts "[#{self.class} has died.]" if @life <= 0
end
#This method takes one turn in a fight.
def fight(enemy, weapon)
if life <= 0
puts "[#{self.class} is too dead to fight!]"
return
end
#Attack the opponent
your_hit = rand(strength + weapon)
puts "[You hit #{your_hit} points of damage!]"
enemy.hit(your_hit)
#Retaliation
p enemy
if enemy.life > 0
enemy_hit = rand(enemy.strength + enemy.weapon)
puts "[Your enemy hit with #{enemy_hit} points of damage!]"
self.hit(enemy_hit)
end
end
end
class Dragon < Creature
life 1340 # tough scales
strength 451 # bristling veins
charisma 1020 # toothy smile
weapon 939 # fire breath
end
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