lib/robut/plugin/calc.rb in robut-0.2.1 vs lib/robut/plugin/calc.rb in robut-0.3.0

@@ -1,17 +1,23 @@
 require 'calc'
 
 # A simple calculator. This delegates all calculations to the 'calc'
 # gem.
-class Robut::Plugin::Calc < Robut::Plugin::Base
+class Robut::Plugin::Calc
+  include Robut::Plugin
 
+  # Returns a description of how to use this plugin
+  def usage
+    "#{at_nick} calc <calculation> - replies with the result of <calculation>"
+  end
+  
   # Perform the calculation specified in +message+, and send the
   # result back.
   def handle(time, sender_nick, message)
     if sent_to_me?(message) && words(message).first == 'calc'
       calculation = words(message, 'calc').join(' ')
       begin
-        reply("#{calculation} = #{Calc.evaluate(calculation)}")
+        reply("#{calculation} = #{::Calc.evaluate(calculation)}")
       rescue
         reply("Can't calculate that.")
       end
     end
   end