+
−#include "game_view.h"
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−
+
−#include <QtQuick/qquickwindow.h>
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−
+
−#include <QCursor>
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−#include <QOpenGLFramebufferObjectFormat>
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−#include <QQuickOpenGLUtils>
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−#include <QTimer>
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−#include <QtGui/QOpenGLContext>
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−
+
−class GameViewRenderer : public QQuickFramebufferObject::Renderer {
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− public:
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−  explicit GameViewRenderer() = default;
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−
+
−  GameViewRenderer(const GameViewRenderer&) = delete;
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−  GameViewRenderer(GameViewRenderer&&) = delete;
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−  GameViewRenderer& operator=(const GameViewRenderer&) = delete;
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−  GameViewRenderer& operator=(GameViewRenderer&&) = delete;
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−
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−  void render() override;
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−  QOpenGLFramebufferObject* createFramebufferObject(const QSize& size) override;
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−  void synchronize(QQuickFramebufferObject* fbo) override;
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−
+
−  QPointer<GameView> m_gameView;
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−  QPointer<QQuickWindow> m_window;
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−  bool m_dirty{true};
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−  QSizeF m_gameViewSize;
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−};
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−
+
−void GameViewRenderer::render() {
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−  const auto engine = m_gameView->engineInstance();
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−
+
−  if (!engine) {
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−    return;
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−  }
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−
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−  if (m_dirty) {
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−    m_dirty = false;
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−    engine->setOpenGLContext(QOpenGLContext::currentContext());
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−  }
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−
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−  engine->renderFrame();
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−
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−  QQuickOpenGLUtils::resetOpenGLState();
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−}
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−
+
−QOpenGLFramebufferObject* GameViewRenderer::createFramebufferObject(
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−    const QSize& size) {
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−  QOpenGLFramebufferObjectFormat format;
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−  format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
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−  format.setSamples(8);
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−  auto fbo = new QOpenGLFramebufferObject(size, format);
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−  return fbo;
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−}
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−
+
−void GameViewRenderer::synchronize(QQuickFramebufferObject* fbo) {
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−  if (!m_gameView) {
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−    m_gameView = qobject_cast<GameView*>(fbo);
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−    m_window = fbo->window();
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−  }
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−
+
−  if (const auto currentSize = m_gameView->size();
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−      currentSize != m_gameViewSize) {
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−    m_gameViewSize = currentSize;
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−    m_dirty = true;
+
−  }
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−
+
−  m_gameView->executeActions();
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−}
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−
+
−GameView::GameView(QQuickItem* parent) : QQuickFramebufferObject(parent) {
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−  setMirrorVertically(true);
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−}
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−
+
−void GameView::tick(quint32 delta) {
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−  addAction([delta](auto engine) { engine->advance(delta); });
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−}
+
−
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−EngineInstance* GameView::engineInstance() const { return m_engineInstance; }
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−
+
−QQuickFramebufferObject::Renderer* GameView::createRenderer() const {
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−  return new GameViewRenderer{};
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−}
+
−
+
−void GameView::executeActions() {
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−  if (!m_engineInstance) {
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−    return;
+
−  }
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−
+
−  for (const auto& action : m_actions) {
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−    action(m_engineInstance);
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−  }
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−
+
−  m_actions.clear();
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−}
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−
+
−void GameView::setEngineInstance(EngineInstance* engineInstance) {
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−  if (m_engineInstance == engineInstance) {
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−    return;
+
−  }
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−
+
−  m_engineInstance = engineInstance;
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−
+
−  Q_EMIT engineInstanceChanged(m_engineInstance);
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−}
+
−
+
−void GameView::addAction(std::function<void(EngineInstance*)>&& action) {
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−  m_actions.append(std::move(action));
+
−}