- Qt 5.5
- Qt Widgets
- Rogue Example
- movementtransition.h Example File
- Qt 5.5.1 Reference Documentation

# movementtransition.h Example File

statemachine/rogue/movementtransition.h

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the documentation of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
    ** modification, are permitted provided that the following conditions are
    ** met:
    **   * Redistributions of source code must retain the above copyright
    **     notice, this list of conditions and the following disclaimer.
    **   * Redistributions in binary form must reproduce the above copyright
    **     notice, this list of conditions and the following disclaimer in
    **     the documentation and/or other materials provided with the
    **     distribution.
    **   * Neither the name of The Qt Company Ltd nor the names of its
    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
    **
    **
    ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
    ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
    ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
    ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
    ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
    ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
    ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
    **
    ** $QT_END_LICENSE$
    **
    ****************************************************************************/

    #ifndef MOVEMENTTRANSITION_H
    #define MOVEMENTTRANSITION_H

    #include <QtWidgets>

    #include "window.h"

    class MovementTransition : public QEventTransition
    {
        Q_OBJECT

    public:
        MovementTransition(Window *window) :
            QEventTransition(window, QEvent::KeyPress) {
            this->window = window;
        }

    protected:
        bool eventTest(QEvent *event) Q_DECL_OVERRIDE {
            if (event->type() == QEvent::StateMachineWrapped &&
                static_cast<QStateMachine::WrappedEvent *>(event)->event()->type() == QEvent::KeyPress) {
                QEvent *wrappedEvent = static_cast<QStateMachine::WrappedEvent *>(event)->event();

                QKeyEvent *keyEvent = static_cast<QKeyEvent *>(wrappedEvent);
                int key = keyEvent->key();

                return key == Qt::Key_2 || key == Qt::Key_8 || key == Qt::Key_6 ||
                       key == Qt::Key_4 || key == Qt::Key_Down || key == Qt::Key_Up ||
                       key == Qt::Key_Right || key == Qt::Key_Left;
            }
            return false;
        }

        void onTransition(QEvent *event) Q_DECL_OVERRIDE {
            QKeyEvent *keyEvent = static_cast<QKeyEvent *>(
                static_cast<QStateMachine::WrappedEvent *>(event)->event());

            int key = keyEvent->key();
            switch (key) {
                case Qt::Key_Left:
                case Qt::Key_4:
                    window->movePlayer(Window::Left);
                    break;
                case Qt::Key_Up:
                case Qt::Key_8:
                    window->movePlayer(Window::Up);
                    break;
                case Qt::Key_Right:
                case Qt::Key_6:
                    window->movePlayer(Window::Right);
                    break;
                case Qt::Key_Down:
                case Qt::Key_2:
                    window->movePlayer(Window::Down);
                    break;
                default:
                    ;
            }
        }

    private:
        Window *window;
    };

    #endif