Class: CARPS::Rule

Inherits:
Object
  • Object
show all
Defined in:
lib/carps/mod/rule.rb

Overview

A rule.

This class uses the TemplateMethod pattern.

Subclasses should provide the following methods

  • ‘dice’ method which takes needed parameters (ie from apply and show_odds) and returns a Dice

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Rule

Create the rule



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# File 'lib/carps/mod/rule.rb', line 30

def initialize
   @actions = {}
end

Instance Method Details

#apply(*args) ⇒ Object

Apply the rule to the arguments



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# File 'lib/carps/mod/rule.rb', line 35

def apply *args
   d = dice *args
   result = d.roll
   action_klass = choose_action_class result
   action = action_klass.new
   action.apply result, *args
end

#show_odds(*args) ⇒ Object

Print the odds



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# File 'lib/carps/mod/rule.rb', line 44

def show_odds *args
   d = dice *args
   odds = {}
   d.odds.each do |result, chance|
      action = choose_action_class result
      odds[action] = odds[action].to_f + chance
   end
   puts "The odds are approximately:"
   puts "\n"
   # Sort the odds
   odds = odds.to_a.sort {|oda, odb| oda[1] <=> odb[1]}
   odds = odds.reverse
   odds.each do |action_klass, chance|
      action = action_klass.new
      percent = (chance * 100.0).to_i
      puts "#{percent}% chance:"
      puts "\t#{action.summary}"
   end
end