Key extractors by stable planet identity

tests/test_planet_unique_identity.gd

@@ -0,0 +1,39 @@
+extends SceneTree
+
+
+func _initialize() -> void:
+	var state: Node = root.get_node("GameState")
+	state.extractors.clear()
+	var first_by_name: Dictionary = {}
+	var first: Dictionary = {}
+	var second: Dictionary = {}
+	for x in range(-60, 61):
+		for y in range(-60, 61):
+			var chunk := Vector2i(x, y)
+			if not WorldGen.has_planet_at_chunk(chunk):
+				continue
+			var data: Dictionary = WorldGen.planet_data_at_chunk(chunk)
+			if first_by_name.has(data.name):
+				first = first_by_name[data.name]
+				second = data
+				break
+			first_by_name[data.name] = data
+		if not second.is_empty():
+			break
+	if second.is_empty():
+		return _fail("could not find two generated planets sharing a display name")
+	if first.planet_id == second.planet_id:
+		return _fail("duplicate display names also shared a stable id")
+	state.add_extractor(first.name, Vector2.ZERO, "ore", first.planet_id)
+	if not state.has_extractor_at(first.planet_id):
+		return _fail("extractor was not attached to its planet id")
+	if state.has_extractor_at(second.planet_id):
+		return _fail("'%s' inherited an extractor from its namesake" % second.name)
+	print("same name '%s', distinct ids %s and %s" % [first.name, first.planet_id, second.planet_id])
+	print("TEST_PLANET_UNIQUE_IDENTITY: PASS")
+	quit(0)
+
+
+func _fail(message: String) -> void:
+	print("TEST_PLANET_UNIQUE_IDENTITY: FAIL (%s)" % message)
+	quit(1)