lib/gamefic/world/playbook.rb in gamefic-2.3.0 vs lib/gamefic/world/playbook.rb in gamefic-2.4.0

@@ -3,10 +3,12 @@
 module Gamefic
   module World
     # A collection of rules for performing commands.
     #
     class Playbook
+      ActionHook = Struct.new(:verb, :block)
+
       # An array of available syntaxes.
       #
       # @return [Array<Gamefic::Syntax>]
       attr_reader :syntaxes
 
@@ -45,21 +47,27 @@
       def verbs
         @commands.keys
       end
 
       # Add a proc to be evaluated before a character executes an action.
+      # When a verb is specified, the proc will only be evaluated if the
+      # action's verb matches it.
       #
+      # @param verb [Symbol, nil]
       # @yieldparam [Gamefic::Action]
-      def before_action &block
-        @before_actions.push block
+      def before_action verb = nil, &block
+        @before_actions.push ActionHook.new(verb, block)
       end
       alias validate before_action
 
       # Add a proc to be evaluated after a character executes an action.
+      # When a verb is specified, the proc will only be evaluated if the
+      # action's verb matches it.
       #
+      # @param verb [Symbol, nil]
       # @yieldparam [Gamefic::Action]
-      def after_action &block
-        @after_actions.push block
+      def after_action verb = nil, &block
+        @after_actions.push ActionHook.new(verb, block)
       end
 
       # Get an Array of all Actions associated with the specified verb.
       #
       # @param verb [Symbol] The Symbol for the verb (e.g., :go or :look)