dice.rb

 1	 #Advanced Gaming Dice
 2	 #
 3	 # dice = 3.d(6) --> array of 3 numbers of 1..6 (returns Dice)
 4	 # dice.roll --> new array of numbers (returns Dice)
 5	 # dice.total --> total value of numbers (returns Fixnum)
 6	 # dice.to_ascii --> if dice are 6 sided, outputs ascii of dice faces (returns String)
 7	 # dice.set(num, sides) --> new array of num numbers of 1..sides (returns Dice)
 8	 # dice.sides --> returns the set number of sides for the dice (read only)
 9	 # dice.count --> number of dice (read only)
 10	 class Dice < Array
 11	    attr_reader :sides, :count
 12	    
 13	    def set(count, sides)
 14	       @count = count; @sides = sides
 15	       self.replace(Dice.new(count)).roll
 16	    end
 17	    
 18	    def roll
 19	       self.map! {rand(@sides)+1}
 20	       self
 21	    end
 22	    
 23	    def total
 24	       inject(0){|sum,v| sum+v}
 25	    end
 26	    
 27	    def to_ascii
 28	       logic = [
 29	       lambda{|n| '+-----+ '},
 30	       lambda{|n| (n>3 ? '|O  ' : '|   ')+(n>1 ? ' O| ' : '  | ')},
 31	       lambda{|n| (n==6 ? '|O ' : '|  ')+
 32	             (n%2==1 ? 'O' : ' ')+(n==6 ? ' O| ' : '  | ')},
 33	       lambda{|n| (n>1 ? '|O  ' : '|   ')+(n>3 ? ' O| ' : '  | ')}
 34	       ]
 35	       str=''
 36	       5.times {|row|
 37	          self.each {|n| str += logic[row%4].call(n) }
 38	          str+="\n"
 39	       } if @sides == 6 and self.size > 0 and not self[0].nil?
 40	       str
 41	    end
 42	 end
 43	 
 44	 class Fixnum
 45	    def d(sides)
 46	       Dice.new.set(self,sides).roll
 47	    end
 48	 end
 49	 
 50	 #Example
 51	 require 'pp' #pretty print for the array
 52	 pp dice = 3.d(6)
 53	 puts dice.to_ascii
 54	 puts dice.total

 1	 #Example
 2	 require 'pp' #pretty print for the array
 3	 pp dice = 3.d(6)
 4	 puts dice.to_ascii
 5	 puts dice.total

 [3, 1, 4]
 +-----+ +-----+ +-----+
 |    O| |     | |O   O|
 |  O  | |  O  | |     |
 |O    | |     | |O   O|
 +-----+ +-----+ +-----+
 8