Where to hook trade units to automate movement?

[civictor]

I am writing a trade automation mod. What I need is to intercept the UI for when the trade convoy or vessel needs to be assigned a route and write code to automatically assign it a route.

I found the UI code for calculating and selecting trade routes. That is not where I need to hook, though.

Can someone point out what module I should hook to do that? I just do not know the naming convention to pick out the module that handles the unit movement queue or whatever it is.

 

[Nutty]

For normal units, AFAIK you would use Unit.PushMission to give it MISSION_MOVE_TO, but it looks like trade units use MISSION_ESTABLISH_TRADE_ROUTE instead.

If you need to intercept the call, it looks like you want to intercept GAMEMESSAGE_PUSH_MISSION from Game.SelectionListGameNetMessage.

EDIT: It might be easier to directly edit ChooseInternationalTradeRoutePopup.lua.

 

[civictor]

Thank you for your reply, Nutty. I have checked everywhere and it does not appear there is a good place to intercept trade unit movement in the Lua code. Maybe I missed something. It appears I will need to wait until the DLL is available and find a good hook in the C++ code. If I am wrong, anyone is welcome to give me further guidance.

 

[Nutty]

Hmm... I don't think I was thinking clearly when I wrote my earlier post. Have you checked whether Unit.CanStartMission returns false if the trade unit is already in the middle of a trade mission? In which case, you can simply check your trade units every turn to see if they've finished.