Tatra T813 Video

Published February 09, 2010
Advertisement
Previous video with Cessna test flight apparently made some good (for most) waves in the flight sim scene. Here comes another video, this time with the Tatra T813 truck, focused on its independent swing suspension exercising on bumpy slopes somewhere in High Tatras mountains (it's not a coincidence, the truck got its name after the mountain range).

Suspension limits and parameters were set only approximately so the behavior may not be precise. But it's normal that an unloaded Tatra truck has its hind wheels in V shape.
Also the dynamically refined terrain has a higher resolution than the mesh used for physics, that may be slightly visible in closeups.

">

As a technical note, both videos were captured using GPU-based compression of video frames to reduce the bandwidth needed for sustained disk writes, while not imposing a noticeable performance penalty. Since the video frames are being compressed on GPU, GPU->CPU transfers are also smaller what is a good thing as well.
I also made a custom video codec for ffmpeg that can decode these videos so one can recompress the video directly with ffmpeg or any other tool that uses the libavcodec dll. There will be a separate blog entry with more technical description and the code to be usable for others.
0 likes 2 comments

Comments

Ravuya
I'd be really interested in reading on your video capture stuff, since both Fraps and Snapz Pro make my games run like crap.

Are you accurately simulating the differential(s) on the axles? It seems like it's going too straight for the diffs to be binding up on the hills, unless you just assume that they're in locked diff mode all the time.

It does look like a hoot, though. I wanna drive that truck.
February 09, 2010 11:33 AM
cameni
Yup, that was precisely the reason why I toyed with the video capturing, I'll write the info when I clean the stuff up and create an easy page about it.

The differentials aren't simulated at all, actually even the tire model is somewhat oversimplified. I didn't want to invest too much time into it at this moment, but certainly these aspects will have to be dealt with. But driving the truck is fun even now [smile]
February 09, 2010 12:11 PM
You must log in to join the conversation.
Don't have a GameDev.net account? Sign up!
Profile
Author
Advertisement
Advertisement