Hello!
I'm very glad that you are working on a map!There haven't been many "old-school" maps lately. Regarding your question, no, it's not possible. Although, theoretically, you could create an impassable static object with a very dense black cloud model and place it where you need it.
Too bad, thanks for the answer. It's not an option for my idea, as it would put a huge load on the map. I'll have to make do with workarounds.
Multiplayer: Господство, Извечное противостояние, Война за Магию, Торговая империя, Анатомия войны, Эксперимент
SingleScenario: Последний Рубеж, Трон, Элиралис, Вернуться домой!, Лабиринты разума
Campaign: Колонизация
There haven't been many "old-school" maps lately. Regarding your question, no, it's not possible. Although, theoretically, you could create an impassable static object with a very dense black cloud model and place it where you need it.