Modifying the AI to build more units

[MantisFanatic]

I am trying to modify the code for Civ4 Beyond the Swords so that the AI will want to build more units instead of trying to build things such as Research. I tried following many articles out there, such as the ones listed at "http://modiki.civfanatics.com/index.php/Civ4_Modding_Tutorials" on how to mod in general but it is not working. Can somebody explain the following things:

1. If I modify a .cpp file, will it automatically take affect on a game that had been previously saved, or will I need to start a brand new game? Also, what do I exactly need to do in order to ensure that any changes I make to a .cpp file will be active the next time I launch Civ4 Beyond the Swords?

2. To achieve my goal, it looks like I will need to modify the "CvCityAI.cpp" file. Does this sound right?

If anybody can answer these questions, please provide as many details as possible since I am new to this and have absolutely no idea what I am doing. Any help would be appreciated!

[MantisFanatic]

Update: The instructions I used to install the SDK were Refar's instructions at http://forums.civfanatics.com/downlo...file&id=10018|. Using Visual Studio, I am able to perform the build command without any errors, but when I modify CvCityAI.cpp to something like the following and "build":

In void CvCityAI::AI_chooseProduction()

Old code:

int iCulturePressure;

bDanger = AI_isDanger();

New code:

int iCulturePressure;

int zero = 0;
int test = 987654321/zero;

bDanger = AI_isDanger();

It is not crashing after completing a turn from a saved game like I would expect it to due to division by zero, which leads me back to question 1 from my previous post. I doubt it is the case that this code is not being hit, so do I need to do something else after running "build" in Visual Studio to make this code active?

[MantisFanatic]

Okay, I think I answered my own questions. First of all, I was not copying and pasting the "CvGameCoreDLL.dll" file from the "Final_Release" folder to the folder that Civ4 was using. Second, I was able to encourage the AI to build more units by changing the int CvCityAI::AI_buildUnitProb() function in CvCityAI.cpp to return a larger value.

In any event, this has been a learning experience for me, and hopefully if others want to increase the number of units the AI builds, I have provided a starting place. Now I am going to play my modded game!