Current questions and answers regarding the map editor.

I know what's wrong; it's the main part, but there are another 10-15 lines. But the key problem is with replacing the castle model. Because then I want to use a similar function to turn ruins into a normal castle. Okay, I'll keep trying, maybe something will work.

Added 1 minute ago
I also read the manual; I'll read it again tomorrow, maybe I'll come up with something.