class_name SonarMaterial
extends RefCounted

enum Value {
	UNKNOWN,
	ROCK,
	METAL,
	SAND,
}


static func is_valid(value: int) -> bool:
	return value >= Value.UNKNOWN and value <= Value.SAND


static func is_terrain(value: int) -> bool:
	return value == Value.ROCK or value == Value.SAND