Poormans UUID Generator for Godot 4.x

uuid_generator.gd

extends Node

func generate_uuid_v4() -> String:
	var uuid = PackedByteArray()
	for i in range(16):
		uuid.append(randi() % 256)
	# Set the version to 4 (randomly generated UUID)
	uuid[6] = (uuid[6] & 0x0F) | 0x40
	# Set the variant to DCE 1.1, ITU-T X.667
	uuid[8] = (uuid[8] & 0x3F) | 0x80
	# Convert to string format
	var str_uuid = ""
	for i in range(16):
		str_uuid += "%02x" % uuid[i]
		if i == 3 or i == 5 or i == 7 or i == 9:
			str_uuid += "-"
	return str_uuid

uuid_generator_test.gd

extends Node

# Assuming your UUID function is in a script named UUIDGenerator.gd
var uuid_generator = preload("res://uuid_generator.gd").new()

func _ready():
	test_generate_uuid_v4_uniqueness(1000) # Test with 1000 UUIDs

func test_generate_uuid_v4_uniqueness(test_count: int):
	var uuids = []
	var duplicate_found = false
	
	for i in range(test_count):
		var uuid = uuid_generator.generate_uuid_v4()
		if uuid in uuids:
			print("Duplicate UUID Found: " + uuid)
			duplicate_found = true
			break
		else:
			uuids.append(uuid)
	
	if not duplicate_found:
		print("Test Passed: No duplicates found in " + str(test_count) + " generated UUIDs.")
	else:
		print("Test Failed: Duplicate UUID detected.")
	
	# Optionally, you can also perform the format and version test on each generated UUID
	test_uuid_format_and_version(uuids)
	
	for uuid in uuids:
		print(uuid)

func test_uuid_format_and_version(uuids):
	var uuid_regex = RegEx.new()
	uuid_regex.compile("^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-4[0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}$")
	
	for uuid in uuids:
		if not uuid_regex.search(uuid):
			print("Test Failed: UUID format or version incorrect - " + uuid)
			return
	
	print("All generated UUIDs have valid format and version.")