I already extracted the materials and models folder into the half-life 2\hl2 directory but it didn’t help. I hope someone has more experience in mapping and can tell me how to port Counter-Strike: Source content into Half-Life 2 and episodes. I searched in some other forums for a solution but everything they discribed didn’t work.
What for? which program need more info then that.
As long as the games are legit, you should be able of using the CSS content without doing anything. At least that’s how it is for me.
Oops, I have completely forgotten to mention that I’m talking Hammer Editor, sorry. The choice of props varies of the engine version, but I need the props of Counter-Strike: Source in Half-Life 2: Episode 2 or at least Half-Life 2.
@Zerego: My games are legit but I can only use certain props in each engine version.
hmmm, it should JUST work then, maybe selection type of what editor you go into, make sure both games are installed and proceed with Half life 2 modification on bootup on hammer editor.
Both games are installed and everything should be fine, but it just doesn’t work.
It’s not working because the assets are probably in the wrong place…HL2/Episodes won’t mount the CSS GCF files which contain the content so it’s not loading something somewhere along the line.
The easiest way would be to extract everything with GCFScape from counter-strike source shared.gcf into half-life 2/hl2 while keeping the same folder structures - make sure the /materials folder doesn’t go into hl2/materials/materials for example. If they’re not loading in hammer at that point, you’re using the wrong game configuration.
Technically you can’t redistribute the assets to people that don’t have the game, so if you’re making a mod or something, look into just mounting the CSS GCF in your mod so that you can use all of the assets without redistributing them.
Can I just rename the folders from the gcf which have the same name like the ones in half-life 2\hl2 ?
You shouldn’t have to rename anything, just drop the contents of the CSS /models and /materials directories into your /hl2 directory (you should be able to just overwrite/replace folders that have the same name) - if you start renaming the folders then it won’t be able to load the assets and you’ll have pink checkerboards for all the materials.
If you really want to rename things then you have to also recompile models to accept the updated material paths, and update the material definition files to point to the correct location. A lot of work for little payoff…
Thanks a lot, it worked! 
That’s pretty neat. I’ll try this.