The heuristic from self to the goal (according to problem.heuristic(state)

It is the future cost (h)

Property definitions

ai $ SearchNode :: heuristic=
	# The heuristic from self to the goal (according to `problem.heuristic(state)`
	# It is the future cost (h)
	var heuristic: Float is noinit
lib/ai/search.nit:647,2--649,31