Is this sprite static and added in bulk? see static

Property definitions

gamnit $ Sprite :: static=
	# Is this sprite static and added in bulk? see `static`
	fun static=(value: Bool)
	do
		if isset _static and value != static then needs_remap
		static_direct = value
	end
lib/gamnit/flat/flat_core.nit:278,2--283,4