+
−#include "game_view.h"
+
−
+
−#include <QtQuick/qquickwindow.h>
+
−#include <QCursor>
+
−#include <QTimer>
+
−#include <QtGui/QOpenGLContext>
+
−#include <QtGui/QOpenGLShaderProgram>
+
−
+
−GameView::GameView() : m_delta(0), m_windowChanged(true) {
+
−  connect(this, &QQuickItem::windowChanged, this,
+
−          &GameView::handleWindowChanged);
+
−}
+
−
+
−void GameView::tick(quint32 delta) {
+
−  m_delta = delta;
+
−
+
−  if (window()) {
+
−    QTimer* timer = new QTimer(this);
+
−    connect(timer, &QTimer::timeout, window(), &QQuickWindow::update);
+
−    timer->start(100);
+
−
+
−    // window()->update();
+
−  }
+
−}
+
−
+
−EngineInstance* GameView::engineInstance() const { return m_engineInstance; }
+
−
+
−void GameView::handleWindowChanged(QQuickWindow* win) {
+
−  if (win) {
+
−    connect(win, &QQuickWindow::beforeSynchronizing, this, &GameView::sync,
+
−            Qt::DirectConnection);
+
−    connect(win, &QQuickWindow::sceneGraphInvalidated, this, &GameView::cleanup,
+
−            Qt::DirectConnection);
+
−
+
−    win->setClearBeforeRendering(false);
+
−
+
−    m_windowChanged = true;
+
−  }
+
−}
+
−
+
−void GameView::cleanup() { m_renderer.reset(); }
+
−
+
−void GameView::setEngineInstance(EngineInstance* engineInstance) {
+
−  if (m_engineInstance == engineInstance) return;
+
−
+
−  cleanup();
+
−  m_engineInstance = engineInstance;
+
−
+
−  emit engineInstanceChanged(m_engineInstance);
+
−}
+
−
+
−void GameView::sync() {
+
−  if (!m_renderer && m_engineInstance) {
+
−    m_engineInstance->setOpenGLContext(window()->openglContext());
+
−    m_renderer.reset(new GameViewRenderer());
+
−    m_renderer->setEngineInstance(m_engineInstance);
+
−    connect(window(), &QQuickWindow::beforeRendering, m_renderer.data(),
+
−            &GameViewRenderer::paint, Qt::DirectConnection);
+
−  }
+
−
+
−  if (m_windowChanged || (m_viewportSize != window()->size())) {
+
−    m_windowChanged = false;
+
−
+
−    if (m_engineInstance)
+
−      m_engineInstance->setOpenGLContext(window()->openglContext());
+
−
+
−    m_viewportSize = window()->size();
+
−    m_centerPoint = QPoint(m_viewportSize.width(), m_viewportSize.height()) / 2;
+
−  }
+
−
+
−  if (m_engineInstance) {
+
−    QPoint mousePos = mapFromGlobal(QCursor::pos()).toPoint();
+
−    m_engineInstance->moveCamera(mousePos - m_centerPoint);
+
−    QCursor::setPos(mapToGlobal(m_centerPoint).toPoint());
+
−  }
+
−
+
−  if (m_renderer) m_renderer->tick(m_delta);
+
−}
+
−
+
−GameViewRenderer::GameViewRenderer()
+
−    : QObject(), m_delta(0), m_engineInstance(nullptr) {}
+
−
+
−GameViewRenderer::~GameViewRenderer() {}
+
−
+
−void GameViewRenderer::tick(quint32 delta) { m_delta = delta; }
+
−
+
−void GameViewRenderer::setEngineInstance(EngineInstance* engineInstance) {
+
−  m_engineInstance = engineInstance;
+
−}
+
−
+
−void GameViewRenderer::paint() {
+
−  if (m_delta == 0) return;
+
−
+
−  if (m_engineInstance) {
+
−    m_engineInstance->advance(m_delta);
+
−    m_engineInstance->renderFrame();
+
−  }
+
−
+
−  // m_window->resetOpenGLState();
+
−}
+
−
+
−void GameViewRenderer::onViewportSizeChanged(QQuickWindow* window) {
+
−  if (m_engineInstance)
+
−    m_engineInstance->setOpenGLContext(window->openglContext());
+
−}