Qt 5.6 | Qt Widgets | Rogue Example | movementtransition.h Example File

Qt 5.6.2 Reference Documentation

# movementtransition.h Example File

statemachine/rogue/movementtransition.h

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      #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