// Start simulation
    private void StartSim()
    {
        simActive = true;
        if (!simInProgress)
        {
            soundActivators = GameObject.FindObjectsOfType <SoundActivator>();
            saveControl.SaveGame(saveControl.reservedFilename);

            saveButton.interactable = false;
            loadButton.interactable = false;
        }

        simInProgress = true;
    }