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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#ifndef MOVEMENTTRANSITION_H
#define MOVEMENTTRANSITION_H
#include <QtGui/QKeyEvent>
#include <QtStateMachine/QEventTransition>
#include <QtStateMachine/QStateMachine>
#include "window.h"
//![0]
class MovementTransition : public QEventTransition
{
Q_OBJECT
public:
explicit MovementTransition(Window *window)
: QEventTransition(window, QEvent::KeyPress), window(window)
{
}
//![0]
//![1]
protected:
bool eventTest(QEvent *event) override {
if (event->type() == QEvent::StateMachineWrapped &&
static_cast<QStateMachine::WrappedEvent *>(event)->event()->type() == QEvent::KeyPress) {
auto wrappedEvent = static_cast<QStateMachine::WrappedEvent *>(event)->event();
auto 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;
}
//![1]
//![2]
void onTransition(QEvent *event) override {
auto 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:
;
}
}
//![2]
private:
Window *window;
};
#endif