copy from thegates-jam repo

user_data/user_data_spawner.gd

@@ -0,0 +1,47 @@
+extends MultiplayerSpawner
+class_name UserDataSpawner
+
+signal user_data_spawned(id: int, user_data: UserData)
+signal user_data_despawned(id: int)
+
+@export var user_data_scene: PackedScene
+
+
+func _ready() -> void:
+	spawn_function = custom_spawn
+	multiplayer.peer_connected.connect(create_user_data)
+	multiplayer.peer_disconnected.connect(destroy_user_data)
+	spawned.connect(on_spawned)
+	despawned.connect(on_despawned)
+
+
+func create_user_data(id: int):
+	if not multiplayer.is_server(): return
+	spawn([id])
+
+
+func destroy_user_data(id: int):
+	if not multiplayer.is_server(): return
+	get_node(spawn_path).get_node(str(id)).queue_free()
+
+
+func custom_spawn(vars) -> Node:
+	var id = vars[0]
+	
+	var u: UserData = user_data_scene.instantiate() as UserData
+	u.set_multiplayer_authority(id)
+	u.name = str(id)
+	u.id = id
+	return u
+
+
+func get_user_data_or_null(id: int) -> UserData:
+	return get_node(spawn_path).get_node_or_null(str(id))
+
+
+func on_spawned(node: Node) -> void:
+	user_data_spawned.emit(node.get_multiplayer_authority(), node)
+
+
+func on_despawned(node: Node) -> void:
+	user_data_despawned.emit(node.get_multiplayer_authority())