feat: add dust2 level builder, player movement controller, and UI menu components

ui/pause_menu.gd

@@ -93,17 +93,16 @@ func _resume() -> void:
 func _respawn() -> void:
 	_resume() # Unpause
 	
-	# Find local player
+	# Find local player using their unique multiplayer ID
 	var local_player: Node3D = null
+	var pid = multiplayer.get_unique_id()
 	
-	if get_tree().current_scene.has_node("Players"):
-		for p in get_tree().current_scene.get_node("Players").get_children():
-			if p.has_method("is_multiplayer_authority") and p.is_multiplayer_authority():
-				local_player = p
-				break
-				
-	if not local_player:
-		local_player = get_tree().current_scene.get_node_or_null("Player")
+	if get_tree().current_scene:
+		local_player = get_tree().current_scene.get_node_or_null(str(pid))
+		if not local_player:
+			var spawner = get_tree().current_scene.get_node_or_null("PlayerSpawner")
+			if spawner:
+				local_player = spawner.get_node_or_null(str(pid))
 		
 	if local_player and local_player.has_method("take_damage"):
 		local_player.take_damage(9999, Vector3.ZERO)
@@ -271,10 +270,12 @@ func _build_ui() -> void:
 	user_save.pressed.connect(func():
 		SettingsManager.username = user_input.text
 		SettingsManager._save_settings()
-		if NetworkManager.multiplayer.has_multiplayer_peer() and not NetworkManager.multiplayer.multiplayer_peer is OfflineMultiplayerPeer:
-			NetworkManager.update_username.rpc_id(1, user_input.text)
-		else:
-			NetworkManager.update_username(user_input.text)
+		var nm = get_node_or_null("/root/NetworkManager")
+		if nm:
+			if nm.multiplayer.has_multiplayer_peer() and not nm.multiplayer.multiplayer_peer is OfflineMultiplayerPeer:
+				nm.update_username.rpc_id(1, user_input.text)
+			else:
+				nm.update_username(user_input.text)
 	)
 	user_hbox.add_child(user_save)
 	
@@ -684,7 +685,9 @@ func _show_return_dialog() -> void:
 
 func _return_to_main_menu() -> void:
 	_resume() # Reset pause state and cursor mode
-	NetworkManager.disconnect_game()
+	var nm = get_node_or_null("/root/NetworkManager")
+	if nm:
+		nm.disconnect_game()
 	get_tree().change_scene_to_file("res://ui/main_menu/main_menu.tscn")
 
 func _show_main_menu() -> void: