void OnGUI()
{
// Show only enabled and non-hidden systems
// Avoid GC Alloc
_systems.Clear();
Dictionary <IDebuggable, SystemInfo> .Enumerator iter = _gameSystems.GetEnumerator();
while (iter.MoveNext())
{
_systems.Add(iter.Current.Key);
}
iter.Dispose();
for (int i = 0, cnt = _systems.Count; i < cnt; ++i)
{
IDebuggable system = _systems[i];
if (IsEnabled(system))
{
system.OnDebugGUI();
}
}
if (_isPanelShowing)
{
GUI.BringWindowToFront(0);
GUI.FocusWindow(0);
}
}