Add State::get_all method

State::get_all gets all states. When the receiver is a subclass of State it
returns all states of that type.

1 files changed, 5 insertions, 0 deletions

diff --git a/state.rb b/state.rb
index b1f7de0..d8f6458 100644
--- a/state.rb
+++ b/state.rb
@@ -276,6 +276,11 @@ class State
 		nil
 	end
 
+	# Get all states of this type
+	def State.get_all
+		@@states.select{ |x| x.is_a? self }
+	end
+
 	# Depsolve all state classes. This method is not defined in subclasses of
 	# State.
 	def State.depsolve_all