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-// Copyright (C) 2016 The Qt Company Ltd.
-// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
-
-/*!
-    \example animation/sub-attaq
-    \title Sub-Attaq
-    \ingroup examples-qtstatemachine
-
-    \brief This example shows Qt's ability to combine
-    \l{The Animation Framework}{the animation framework}
-    and \l{Qt State Machine Overview}{the state machine framework} to create a
-    game.
-
-    \image sub-attaq-demo.png
-
-    The purpose of the game is to destroy all submarines to win the current
-    level. The boat can be controlled using left and right keys. To fire a bomb
-    you can press the up and down keys.
-
-    \section1 The \c main() Function
-
-    \snippet animation/sub-attaq/main.cpp 0
-
-    The MainWindow instance is created and shown.
-
-    \section1 The \c MainWindow Class
-
-    \snippet animation/sub-attaq/mainwindow.cpp 1
-
-    MainWindow extends QMainWindow and contains the GraphicsScene instance. It
-    creates and sets up the menu bar as well.
-
-    \section1 The \c GraphicsScene Class
-
-    There are several state machines in the application. The \c GraphicsScene
-    state machine handles states related to events outside the actual game scene
-    like the letter animation in the beginning.
-
-    \section2 The \c GraphicsScene Constructor
-
-    \snippet animation/sub-attaq/graphicsscene.cpp 2
-
-    The \c GraphicsScene class contains the background images and the score and
-    level information texts.
-
-    \section2 \c The setupScene Method
-
-    \snippet animation/sub-attaq/graphicsscene.cpp 3
-
-    The four state machine states are created with sequential transitions from
-    one to the next. The \c gameState also has a transition that is triggered
-    by \c newAction, the new game menu item, or its shortcut key at any point
-    in the application. The \c gameState state is an instance of the
-    \c PlayState class.
-
-    \image sub-attaq-graphicsscene-chart.png
-
-    \section1 The \c PlayState Class
-
-    The \c PlayState class is a QState derived class that handles the state when
-    the game is in progress.
-
-    \snippet animation/sub-attaq/states.cpp 4
-
-    The \c PlayState state machine handles higher level game logic like pausing
-    the game and updating the score.
-
-    \image sub-attaq-playstate-chart.png
-
-    The \c playingState state is a QState instance that is active while the user
-    is actively playing the game. The \c pauseState is set up with transitions
-    to and from \c playingState, which are triggered by pressing the p key.
-    The \c lostState is created with a transition to it, which is triggered when
-    the boat is destroyed. The \c winState is also created here with a
-    transition to and from the \c levelState.
-
-    \section1 The \c LevelState Class
-
-    \snippet animation/sub-attaq/states.cpp 5
-
-    The components of the scene are initialized based on what level the player
-    has reached.
-*/