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

ui/main_menu/main_menu.gd

@@ -10,6 +10,10 @@ var _host_lobby_players_list: ItemList
 func _ready() -> void:
 	Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
 	
+	var nm = get_node_or_null("/root/NetworkManager")
+	if nm:
+		nm.connection_succeeded.connect(_on_connection_succeeded)
+	
 	# ==========================================
 	# BACKGROUND: 3D DIORAMA (Sliding Player)
 	# ==========================================
@@ -231,6 +235,7 @@ func _ready() -> void:
 	var _gamemode_opt = OptionButton.new()
 	_gamemode_opt.add_theme_font_size_override("font_size", 24)
 	_gamemode_opt.add_item("Deathmatch", 0)
+	_gamemode_opt.add_to_group("host_only_ui")
 	_gamemode_opt.item_selected.connect(func(index: int):
 		if get_node_or_null("/root/NetworkManager"):
 			get_node("/root/NetworkManager").current_gamemode = _gamemode_opt.get_item_text(index)
@@ -313,6 +318,7 @@ func _build_level_card(parent: Container, title: String, scene_path: String, gra
 	overlay.add_child(lbl)
 	
 	if is_multiplayer:
+		btn.add_to_group("host_only_ui")
 		btn.pressed.connect(func(): get_node("/root/NetworkManager").rpc_load_level.rpc(scene_path))
 	else:
 		btn.pressed.connect(func():
@@ -350,16 +356,9 @@ func _on_multiplayer_back_pressed() -> void:
 	_ui_vbox.show()
 
 func _on_host_pressed() -> void:
-	_multiplayer_panel.hide()
-	_host_lobby_panel.show()
 	var nm = get_node("/root/NetworkManager")
-	nm.host_game()
-	_update_lobby_players()
-	if not nm.player_connected.is_connected(_on_network_player_connected):
-		nm.player_connected.connect(_on_network_player_connected)
-		nm.player_disconnected.connect(_on_network_player_disconnected)
-	if not nm.stats_updated.is_connected(_update_lobby_players):
-		nm.stats_updated.connect(_update_lobby_players)
+	if nm.host_game() == OK:
+		_on_connection_succeeded()
 
 func _on_direct_connect_pressed() -> void:
 	_multiplayer_panel.hide()
@@ -373,7 +372,25 @@ func _on_connect_confirm_pressed() -> void:
 	var ip = _direct_connect_panel.get_node("IPInput").text
 	var port = _direct_connect_panel.get_node("PortInput").text.to_int()
 	get_node("/root/NetworkManager").join_game(ip, port)
-	# For simplicity, we can show a connecting label or just wait for the game to start via RPC
+
+func _on_connection_succeeded() -> void:
+	_direct_connect_panel.hide()
+	_multiplayer_panel.hide()
+	_host_lobby_panel.show()
+	
+	var nm = get_node("/root/NetworkManager")
+	var is_host = nm.multiplayer.is_server()
+	for node in get_tree().get_nodes_in_group("host_only_ui"):
+		if node is BaseButton:
+			node.disabled = not is_host
+			
+	if not nm.player_connected.is_connected(_on_network_player_connected):
+		nm.player_connected.connect(_on_network_player_connected)
+		nm.player_disconnected.connect(_on_network_player_disconnected)
+	if not nm.stats_updated.is_connected(_update_lobby_players):
+		nm.stats_updated.connect(_update_lobby_players)
+		
+	_update_lobby_players()
 
 func _on_lobby_back_pressed() -> void:
 	_host_lobby_panel.hide()
@@ -396,19 +413,14 @@ func _update_lobby_players() -> void:
 	if not _host_lobby_players_list: return
 	_host_lobby_players_list.clear()
 	var nm = get_node("/root/NetworkManager")
-	var host_name = SettingsManager.username
-	var host_ping = 0
-	if nm.player_stats.has(1): host_ping = nm.player_stats[1].get("ping", 0)
 	
-	for pid in nm.connected_players:
-		var p_ping = 0
-		if nm.player_stats.has(pid): p_ping = nm.player_stats[pid].get("ping", 0)
+	for pid in nm.player_stats.keys():
+		var p_name = nm.player_stats[pid].get("username", "Unknown")
+		var p_ping = nm.player_stats[pid].get("ping", 0)
 		
 		if pid == 1:
-			_host_lobby_players_list.add_item("%s (Host) - %sms" % [host_name, host_ping])
+			_host_lobby_players_list.add_item("%s (Host) - %sms" % [p_name, p_ping])
 		else:
-			var p_name = "Player " + str(pid)
-			if nm.player_stats.has(pid): p_name = nm.player_stats[pid].get("username", p_name)
 			_host_lobby_players_list.add_item("%s - %sms" % [p_name, p_ping])
 
 func _on_loadouts_pressed() -> void:

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: