I cant understand what is happenning. I make something in hammer, when i enter in the game, or the vertices are messed or the entire poligon is gone. Someone can help me?:confused:

can you post a screenshot of the ingame version and the hammer version so we can compare and look what's wrong?

You probably have created bad brush (non convex).
1) Press Alt-P and see if this shows some errors, fix these brushes. Every vertex should "see" only their neighbour vertices
2) If things look ok in above, Export your map to .MAP file then load it in Hammer and look for these errors, fixe these brushes (but in RMF file !)
3) If none of above show errors fin hlfix program, use it to convert RMF to MAP file - look for bad brushes (it will show numbers of brushes it is fixing). Do not use this MAP file but find these problemstic brushes in Hammer and fix manually.

If you won't be able to fix brush after several attempts - cut it to pieces with triangle walls only.

i figured this! But thanks for the help!:cool:

before you compile, always do map/check for problems. just to check.