static void Init()
{
// Get existing open window or if none, make a new one:
LevelDesigner window = (LevelDesigner)EditorWindow.GetWindow(typeof(LevelDesigner));
window.Show();
}
static void OpenWindow()
{
LevelDesigner window = (LevelDesigner)GetWindow(typeof(LevelDesigner));
window.minSize = new Vector2(300, 300);
window.Show();
}