Huge cleanups and added open gl window

src/engine/gamewindow.h

@@ -0,0 +1,45 @@
+#pragma once
+
+#include <QWindow>
+#include <QOpenGLFunctions>
+
+class QOpenGLContext;
+class QOpenGLPaintDevice;
+class QOpenGLShaderProgram;
+struct ProjectContainer;
+
+class GameWindow : public QWindow, protected QOpenGLFunctions
+{
+    Q_OBJECT
+
+public:
+    explicit GameWindow(const ProjectContainer &project, QWindow *parent = nullptr);
+    ~GameWindow();
+
+    void initialize();
+    void render();
+
+public slots:
+    void renderLater();
+    void renderNow();
+
+protected:
+    bool event(QEvent *event) override;
+    void keyPressEvent(QKeyEvent *event) override;
+    void keyReleaseEvent(QKeyEvent *event) override;
+
+    void exposeEvent(QExposeEvent *event) override;
+
+private:
+    const ProjectContainer &m_project;
+
+    QOpenGLContext *m_context{};
+    QOpenGLPaintDevice *m_device{};
+
+    GLint m_posAttr = 0;
+    GLint m_colAttr = 0;
+    GLint m_matrixUniform = 0;
+
+    QOpenGLShaderProgram *m_program{};
+    int m_frame{};
+};