Editing .def files

[rebelsybe]

I played around a bit with .def files, I just changed the probability of parked trucks from 1.0 to 3.0, to increase parked traffic (I think this is the right location for that, need to tweak the value maybe more). Now I have a question. Are the changes in the extracted .def files automatically also changed in the game files in the Euro Truck Simulator 2 folder? Or is it a totally different location? And if it is a different location, how do I change the value in the files without extracting them again?

[Underscore_101_3]

Did you actually make a mod for it, or did you just edit some files?

[Reese]

Simply extracting and editing the extracted file does nothing. You need to make it into a mod. Thankfully modding with just def files is relatively easy.

In your Documents\Euro Truck Simulator 2\mod\ folder, create a new folder with a name of your choice. Inside, create a new text document, and change the name + extension to

manifest.sii

It can be left blank, this just makes the game recognise that you've got a mod there. Now create a folder named def, and now whatever def file you change, wherever you got it from in the game files, you need to create that same directory structure and put the def file in that location under the mod/yourmod/def folder.

Next time you run the game and open the mod manager, you should now see the (blank) mod. Activate it and see if your changes took effect.

Now if you want to make adjustments to it, close the game, open the mod folder, find the def in question, make your changes, and relaunch the game.

Edit: For the manifest, if you want to make it look pretty and function as an actual manifest(like other mods you may have downloaded), you can check out this page:
https://modding.scssoft.com/wiki/Documentation/Engine/Mod_manager

[rebelsybe]

Thanks, I created a MOD. Now I have to tweak the value a bit, because I don't see much change. Do you guys have an advice of what would be a good value? And do you think it would actually work this way to increase the trucks or is it some wrong way thinking of me?