Reveal castle info to AI if it's partially in fog

[idshibanov]

Right now AI is at disadvantage when it can ignore a castle if it's entrance isn't in view. Added a check on new tile revealed to them.

[ihhub]

I have two questions regarding this approach:

• why don't we reveal all tiles where castle stands as AI cannot calculate a path to one tile surrounded by fog?
• aren't we making AI cheat by revealing the entrance of the castle? AI could see whether a player stands there.

[ihhub]

Hi @idshibanov , could you please answer the question above when you have free time?

[idshibanov]

I think you're correct, we'll need another approach here. Closing for now.