Ok, I tried searching, and while I found some relevant information, I couldnt find anything for what Im trying to do exactly. Here is what Ive done so far (copied from my post at VERC)...
Post 1. " a couple train prop questions 
Can they be made to randomly pass through? Like say every minute or so?
Also, I notice the engine for the combine trains is missing the front wheel... um??? Is there another prop Im missing that I should use?
And finally, do such moving objects lag things like they did in hldm?"
Post 2. "Ok, Ive been playing with it for a bit and I think Im on the right track except I cant bring it all together. Here is what Ive done so far.
I created a prop_dynamic using the combine engine. I made a brush the same size and made it a func_tracktrain with an invisible texture. I assigned it as the parent to the prop_dynamic. I have 2 path_track entities for them to follow. Ok, now everything moves, but the train is turned sideways for some reason. I cant figure out how to correct this. 8(
I have also set up a logic_timer so the train will come through every minute and a half. It halfway works. The func_tracktrain works correctly because I can hear the sound that Ive assigned to it as it spawns and moves, but the prop_dynamic does not spawn with it.
And finally, the prop_dynamic doesnt disappear after it goes through. Also, the func_tracktrain (and the sound with it)doesnt either. The sound is infinite.
Make sense at all?
Any help would be much appreciated. "
This is really annoying me because I feel like Im so close to getting this, but I cant get it all working correctly. 8( Can anyone here at snarkpit help? That would be very awesome.
