Treat stopped projects with active threads as running

Resolves: #507

Author: adazem009

src/engine/internal/engine.cpp

@@ -95,6 +95,7 @@ void Engine::clear()
     m_edgeActivatedHatValues.clear();
 
     m_running = false;
+    m_frameActivity = false;
 
     m_unsupportedBlocks.clear();
 }
@@ -421,6 +422,7 @@ void Engine::stop()
         m_running = false;
     }
 
+    m_frameActivity = false;
     deleteClones();
     stopSounds();
     m_stopped();
@@ -578,6 +580,9 @@ void Engine::step()
         }
     }
 
+    // Check running threads (must be done here)
+    m_frameActivity = !m_threads.empty();
+
     m_redrawRequested = false;
 
     // Step threads
@@ -737,7 +742,7 @@ void Engine::eventLoop(bool untilProjectStops)
 
 bool Engine::isRunning() const
 {
-    return m_running;
+    return m_running || m_frameActivity;
 }
 
 double Engine::fps() const

src/engine/internal/engine.h

@@ -277,6 +277,7 @@ class Engine : public IEngine
         bool m_spriteFencingEnabled = true;
 
         bool m_running = false;
+        bool m_frameActivity = false;
         bool m_redrawRequested = false;
         sigslot::signal<> m_aboutToRedraw;
         sigslot::signal<VirtualMachine *> m_threadAboutToStop;

test/engine/engine_test.cpp

@@ -2018,6 +2018,8 @@ TEST(EngineTest, StopAllBypass)
     ASSERT_VAR(stage, "j");
     ASSERT_EQ(GET_VAR(stage, "j")->value().toInt(), 5);
 
+    ASSERT_TRUE(engine->isRunning());
+    engine->step();
     ASSERT_FALSE(engine->isRunning());
 }