diff -r 0135e64c6c66 -r c4fd2813b127 qmlfrontend/hwengine.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/qmlfrontend/hwengine.cpp	Wed Jul 31 23:14:27 2019 +0200
@@ -0,0 +1,70 @@
+#include "hwengine.h"
+
+#include <QDebug>
+#include <QImage>
+#include <QUuid>
+
+#include "engine_instance.h"
+#include "engine_interface.h"
+#include "game_view.h"
+#include "preview_acceptor.h"
+
+HWEngine::HWEngine(QObject* parent) : QObject(parent) {}
+
+HWEngine::~HWEngine() {}
+
+void HWEngine::getPreview() {
+  emit previewIsRendering();
+
+  m_gameConfig = GameConfig();
+  m_gameConfig.cmdSeed(QUuid::createUuid().toByteArray());
+
+  EngineInstance engine(m_engineLibrary);
+  if (!engine.isValid())  // TODO: error notification
+    return;
+
+  engine.sendConfig(m_gameConfig);
+
+  QImage previewImage = engine.generatePreview();
+
+  if (m_previewAcceptor) m_previewAcceptor->setImage(previewImage);
+
+  emit previewImageChanged();
+  // m_runQueue->queue(m_gameConfig);
+}
+
+EngineInstance* HWEngine::runQuickGame() {
+  m_gameConfig.cmdTheme("Nature");
+  Team team1;
+  team1.name = "team1";
+  Team team2;
+  team2.name = "team2";
+  team2.color = "7654321";
+  m_gameConfig.cmdTeam(team1);
+  m_gameConfig.cmdTeam(team2);
+
+  EngineInstance* engine = new EngineInstance(m_engineLibrary, this);
+
+  return engine;
+  // m_runQueue->queue(m_gameConfig);
+}
+
+int HWEngine::previewHedgehogsCount() const { return m_previewHedgehogsCount; }
+
+PreviewAcceptor* HWEngine::previewAcceptor() const { return m_previewAcceptor; }
+
+QString HWEngine::engineLibrary() const { return m_engineLibrary; }
+
+void HWEngine::setPreviewAcceptor(PreviewAcceptor* previewAcceptor) {
+  if (m_previewAcceptor == previewAcceptor) return;
+
+  m_previewAcceptor = previewAcceptor;
+  emit previewAcceptorChanged(m_previewAcceptor);
+}
+
+void HWEngine::setEngineLibrary(const QString& engineLibrary) {
+  if (m_engineLibrary == engineLibrary) return;
+
+  m_engineLibrary = engineLibrary;
+  emit engineLibraryChanged(m_engineLibrary);
+}