AI adjusting..

[Raine Riihimäki]

Hi all,
I'm adjusting AI speed to a certain tracks and my brain halted. I have now AI set to 100% in game.
Now I am looking the AIW file in trackfolder and planning to adjust ai speeds. I've read some tutorials, but like I said my brain just halts with this particular thing. Worst, Mid and Best adjust..is it like I understand it that When worst is 75%, then it's 75% of that in-game setting of 100% and My Mid is 1.1, so it is 110% of that 100% setting in-game and best adjust is 1.21 and so it means best drivers drive 120% of my 100% in-game setting in that track?
I am little lost here.

 

[Fossil87]

Those are AI difficulty modifiers that determine the AI strength at 70% (WorstAdjust), 100% (MidAdjust) and 120% (BestAdjust).

I think this can be best explained using an example:

WorstAdjust=(0.75) - In game AI strength 70% but actually 75% AI strength
MidAdjust=(1.1) - In game AI strength 100% but actually 110% AI strength
BestAdjust=(1.25) - In game AI strength 120% but actually 125% AI strength

So if you set your AI strength in game to 100% and find the AI too slow, you can increase the MidAdjust value until they become more of a challenge.

 

[Raine Riihimäki]

Ok, thanks! this was the thing that riddled me. So basically I have to only adjust that MidAdjust when In game it is 100%. No need to tweak Worst and Best.
But one thing..In GTR 2 the in-game setting is 100% at its lowest. If you want it to be lower it needs to be tweaked by PLR. setting in games folder? Am I right?

 

[Fossil87]

Yes, you can set AI Driver Strength="" in the PLR file to whatever you like.

 

[jgf]

There are two other settings you will need to address to have balanced AI - qualratio and raceratio.

Have you noticed at some tracks you are much faster than the AI during practice but they leave you in the dust in a race, or vice versa? That is the imbalance in the track settings. There is a priority to how the game computes AI performance, and the settings must be made in that order.

So, first, always set the in-game AI strength to 100 before doing anything else, that way you are making all track adjustments to a common baseline.
Now set mid-adjust (or worst or best, whichever you use, but be consistent with this), qual ratio and race ratio to 1.00. This makes the AI perform to the actual values set in the AIW file, only modified by the settings in the talent files.
Go to a practice session, run enough laps to get a decent setup and note your lap times. Now watch the AI lap times and tweak mid-adjust so their times are what you want.
Repeat this with a qualifying session, adjusting qual ratio so the AI qualifying times are what you want.
Now start a race session, you do not have to compete, and you may accelerate time; let the AI run long enough for their lap times to stabilize and note their times. Adjust race ratio to get those lap times where you want.
Do this for each track. Now the AI are balanced for all those tracks across practice, qualifying, and race sessions ...for that series. You will find different series will require different settings for best performance, what works well for a GT race will not be optimum for an F1 race (I keep a txt file in each track folder with these settings noted for various series, a simple copy/paste before a race weekend is all that's needed). You can now adjust the in-game AI strength and all tracks, all sessions will track that value.

When you start a race the game loads the series and the track, it multiplies the in-game AI strength by the mid-adjust, that is the base AI strength and is used for practice sessions. When you go to the qualifying session that value is multiplied by the qual ratio and sets the AI qualifying times. When the race starts, the practice value (AI strength x mid-adjust) is multiplied by the race ratio to set the AI race times. All of these are further modified by the settings in the talent files.

You may fine tune qual ratio or race ratio without affecting anything else; but if you change mid-adjust you should reset the two ratio values.

This is tedious, especially if you have hundreds of tracks, but it makes a world of difference in the races.

 

[IMC '67]

But one thing..In GTR 2 the in-game setting is 100% at its lowest. If you want it to be lower it needs to be tweaked by PLR. setting in games folder? Am I right?

No, the setting you're looking for is found in the Settings.ddb file in the GameData folder. If you set AIStrength = 80, the in-game slider will go from 80% to 120%.

Professional
{
AIStrength = 80
AIAggression = 1.00
Damage = 100

 

[Raine Riihimäki]

Thank you all for helping! These will make racing and tweaking much easier now.
I like AI being competitive and I am ready to set them track by track to my liking. Huge thanks!

 

[courty89]

Thank you all for helping! These will make racing and tweaking much easier now.
I like AI being competitive and I am ready to set them track by track to my liking. Huge thanks!

There are also some lines in the .TYR file for each car that can be changed to speed up or slowdown AI, relatively independent from the .AIW file, can help when you have multiple manufacturers and a particular model is just off the pace to everything else, just a lot of testing, recently been tweaking a VW Lupo Cup 2003 Mod, new .TYR file for it, qualy times slightly higher then my own but not out of reach with enough practice and race times around my own, trying to make it close to make it more fun

 

[jgf]

If you edit the tyr file it affects every car using that tire. and affects you as well as the AI when you drive that car. If you want to give a specific car a new tyr file, copy the one you want to use, change its name, edit it, then edit the hdc file of the car(s) to point to the new tyr. You must rename the file, the game loads all tyr files wherever it finds them so merely moving a copy into a different folder will not work (the game will load the first it finds and ignore the others, just like talent files).

 

[courty89]

If you edit the tyr file it affects every car using that tire. and affects you as well as the AI when you drive that car. If you want to give a specific car a new tyr file, copy the one you want to use, change its name, edit it, then edit the hdc file of the car(s) to point to the new tyr. You must rename the file, the game loads all tyr files wherever it finds them so merely moving a copy into a different folder will not work (the game will load the first it finds and ignore the others, just like talent files).

Yes correct, thanks for elaborating on this where I didn't, it was past my bedtime