//-----------------------------------------------------------------------------------
public UN_SimulationProperties SimulatingBeginFirst(SimulationParams simParams)
{
SceneView.RepaintAll();
fps_ = (int)simParams.fps_;
frameTime_ = 1.0 / simParams.fps_;
BufferAnimations(simParams.totalTime_, simParams.fps_);
SimulationManager.ResetTimeSlider();
SimulationManager.EditingEnd();
SimulationManager.SetBroadcastMode(UN_BROADCAST_MODE.SIMULATING);
SimulationManager.SimulatingBeginFirst(simParams);
UN_SimulationProperties un_simProperties = new UN_SimulationProperties();;
SimulationManager.GetSimulationProperties(un_simProperties);
entityManager_.DisableEditingObjects();
lastSimulatingTime_ = EditorApplication.timeSinceStartup;
frameSpentTime_ = 0f;
frameTimeEstimation_ = float.MaxValue;
iterationTimeEstimation_ = frameTimeEstimation_ / nIterations_;
EditorApplication.update -= UpdateSimulating;
EditorApplication.update += UpdateSimulating;
SimulationManager.PauseOff();
return(un_simProperties);
}