net: add lobby.gd with join flow and wait room logic

ruf-der-pilze/scripts/lobby.gd

@@ -0,0 +1,61 @@
+extends Control
+
+var _local_role: String = ""
+
+
+func _ready() -> void:
+	$JoinPanel/RoleOption.add_item("Spieler")
+	$JoinPanel/RoleOption.add_item("DM")
+
+	$JoinPanel/JoinButton.pressed.connect(_on_join_pressed)
+	$WaitPanel/StartButton.pressed.connect(_on_start_pressed)
+
+	NetworkManager.connected_to_server.connect(_on_connected)
+	NetworkManager.connection_failed.connect(_on_connection_failed)
+	NetworkManager.player_joined.connect(_on_player_joined)
+	NetworkManager.player_left.connect(_on_player_left)
+	NetworkManager.player_list_synced.connect(_rebuild_player_list)
+	NetworkManager.game_started.connect(_on_game_started)
+
+
+func _on_join_pressed() -> void:
+	var player_name := $JoinPanel/NameInput.text.strip_edges()
+	if player_name.is_empty():
+		return
+	_local_role = "dm" if $JoinPanel/RoleOption.selected == 1 else "player"
+	NetworkManager.join_server("127.0.0.1", 4242)
+
+
+func _on_connected() -> void:
+	var player_name := $JoinPanel/NameInput.text.strip_edges()
+	NetworkManager.register.rpc_id(1, player_name, _local_role)
+	$JoinPanel.visible = false
+	$WaitPanel.visible = true
+	$WaitPanel/StartButton.visible = (_local_role == "dm")
+
+
+func _on_connection_failed() -> void:
+	push_error("[Lobby] Verbindung fehlgeschlagen")
+
+
+func _on_player_joined(_peer_id: int, _player_name: String, _role: String) -> void:
+	_rebuild_player_list()
+
+
+func _on_player_left(_peer_id: int) -> void:
+	_rebuild_player_list()
+
+
+func _rebuild_player_list() -> void:
+	$WaitPanel/PlayerList.clear()
+	for p in NetworkManager.players.values():
+		$WaitPanel/PlayerList.add_item("%s (%s)" % [p.name, p.role])
+
+
+func _on_start_pressed() -> void:
+	NetworkManager.request_start_game.rpc_id(1)
+
+
+func _on_game_started() -> void:
+	# Platzhalter: Szenen-Wechsel kommt im nächsten Feature
+	print("[Lobby] Spiel gestartet!")