Add fps property

Author: adazem009

ScratchCPPGui/ProjectPlayer.qml

@@ -7,6 +7,7 @@ ProjectScene {
     property string fileName
     property int stageWidth: 480
     property int stageHeight: 360
+    property alias fps: loader.fps
 
     id: root
     width: stageWidth

ScratchCPPGui/projectloader.cpp

@@ -58,6 +58,9 @@ void ProjectLoader::setFileName(const QString &newFileName)
     m_project.setFileName(m_fileName.toStdString());
     m_loaded = m_project.load();
     m_engine = m_project.engine().get();
+
+    m_engine->setFps(m_fps);
+
     auto handler = std::bind(&ProjectLoader::emitTick, this);
     m_engine->setRedrawHandler(std::function<void()>(handler));
 
@@ -160,3 +163,21 @@ void ProjectLoader::emitTick()
             renderedTarget->loadProperties();
     }
 }
+
+double ProjectLoader::fps() const
+{
+    return m_fps;
+}
+
+void ProjectLoader::setFps(double newFps)
+{
+    if (qFuzzyCompare(m_fps, newFps))
+        return;
+
+    m_fps = newFps;
+
+    if (m_engine)
+        m_engine->setFps(m_fps);
+
+    emit fpsChanged();
+}

ScratchCPPGui/projectloader.h

@@ -23,6 +23,7 @@ class ProjectLoader : public QObject
         Q_PROPERTY(libscratchcpp::IEngine *engine READ engine NOTIFY engineChanged)
         Q_PROPERTY(StageModel *stage READ stage NOTIFY stageChanged)
         Q_PROPERTY(QQmlListProperty<SpriteModel> sprites READ sprites NOTIFY spritesChanged)
+        Q_PROPERTY(double fps READ fps WRITE setFps NOTIFY fpsChanged)
 
     public:
         explicit ProjectLoader(QObject *parent = nullptr);
@@ -45,12 +46,16 @@ class ProjectLoader : public QObject
         unsigned int frameFinished() const;
         void setFrameFinished(unsigned int newFrameFinished);
 
+        double fps() const;
+        void setFps(double newFps);
+
     signals:
         void fileNameChanged();
         void loadedChanged();
         void engineChanged();
         void stageChanged();
         void spritesChanged();
+        void fpsChanged();
 
     protected:
         void timerEvent(QTimerEvent *event) override;
@@ -67,6 +72,7 @@ class ProjectLoader : public QObject
         StageModel m_stage;
         QList<SpriteModel *> m_sprites;
         QFuture<void> m_eventLoop;
+        double m_fps = 30;
 };
 
 } // namespace scratchcppgui