The RCS revision control system and Ruby. Here is the code from this episode:

#!/usr/bin/env ruby

class Character

def initialize(name,role,lvl)

hp = rand(8)+1

@spells = ["cantrip", "chill touch", "detect undead"]

puts("You are #{name}, a level #{lvl} #{role}")

end #init

def listspells()

puts("#{@spells}")

end #list

def spellcast(n)

puts("You cast #{@spells[n]}")

dice = rand(20) + 1

if dice < 10 then

puts("Your spell pops and fizzles. Nothing happens.")

else

puts("Your spell does #{dice} damage.")

end #if

end #spellcast

end #class

if __FILE__ == $0 then

pc = Character.new("Bob","Wizard",1)

pc.listspells()

pc.spellcast(1)

pc.spellcast(0)

end

shasum -a256=a74e1f1ab22923b03397be10d9fe44afdf33faca034c321ea3b658061199396f