Make engine step modules first, then step cables in Engine::stepFrame().

src/engine/Engine.cpp

@@ -380,6 +380,12 @@ static void Engine_stepFrame(Engine* that) {
 		}
 	}
 
+	// Step modules along with workers
+	internal->workerModuleIndex = 0;
+	internal->engineBarrier.wait();
+	Engine_stepWorker(that, 0);
+	internal->workerBarrier.wait();
+
 	// Step cables
 	for (Cable* cable : that->internal->cables) {
 		Cable_step(cable);
@@ -397,12 +403,6 @@ static void Engine_stepFrame(Engine* that) {
 		}
 	}
 
-	// Step modules along with workers
-	internal->workerModuleIndex = 0;
-	internal->engineBarrier.wait();
-	Engine_stepWorker(that, 0);
-	internal->workerBarrier.wait();
-
 	internal->frame++;
 }