# Selection method

# Selection.tz (c) 2010 Jacob Schrum.
# See Simulation.tz for more copyright information

@include "Abstract.tz".

Abstract : Selection {
	+ variables:
		generation (int).

	# Trivial archiving, since state is simple
	+ to archive:
		return 1.

	+ to dearchive:
		return 1.

	+ to init:
		generation = 0.

	+ to get-generation:
		return generation.

	+ to advance-generation:
		generation++.

	+ to set-generation to gen (int):
		generation = gen.

	+ to get-meta-fitness base fitness (list):
		return fitness.

		# Abstract
	#+ to get-best between a (object) and b (object) given fitnessA (list) and fitnessB (list):
		# Can't be enabled because it shadows the method in NSGA2.zx	
	#+ to get-best choose n (int) of-population fitnesses (list):
		# Define in subclass

}