Tutorial: Overriding Resources

With this small tutorial I will teach you how to keep an original resource, but replace it with a different one.

So whenever you want to use the original resource you can deactivate the replacement package.

Let's do this, step-by-step.

1. Goto Documents\Electronic Arts\The Sims 3\Mods;
2. Create a new folder where you will put overriding packages.
   In this case I will call it "Override".
   
3. Open your Resource.cfg with Notepad and add the following lines to the top:
   Priority 1000
   PackedFile Override/*.package
4. Save the modified Resource.cfg;
5. Done.

Now every package that overwrite a original shall be put in the folder you've just created.

Explanation:

Resources are loaded by the engine according to the Resource.cfg;
This method guarantee that the override package will replace the original.
The Priority instruction tells the engine to load them after resources with lower priority.

Issues:

Resources that link to other resources may not work properly while overriding.
I speak of CASP | OBJD | OBJK | VPXY | MODL | MLOD mostly as tested.

It seems like the developers made they not to be replaced again, for some reasons:

Overflow while reading Resources:

Since those resources link others, the engine browse for them in the specified:
DBPF Package | into the already written cache | making references for looking them up later.
Replacing them again, might cause less flow into the memory/cache, a reason to avoid doing so.

This only means, that in case you have other of those resources with same identifiers already in your Mods folder,
the engine will not replace them, to avoid the issues I listed.
Or that can be just a bug into the loading process of the game.

Any doubts, just leave a comment, or send me an email and I will reply as soon as possible.