Topdown track edge collision

ph33r_zerot

I am looking at making a top down car racer.

The 'track' is a flat jpg image of a grey track with green elsewhere, the car actor has the camera constrained to it and as the car moves and rotates it appears to drive along the track, I have this all working so far.

My question is how to keep the car on track, or 'crash' if you hit the green/grass. Do I need to put lots of straight edged actors around the track as barriers or is there another/better option?

tatiang

You can use many straight "edge" actors or try your hand at a custom collision shape: http://forums.gamesalad.com/discussion/90103/video-tutorial-custom-collision-shapes-using-physics-body-editor.

ph33r_zerot

Thanks for the link, I'll give that a shot.

While we're here are there any links to setting up more realistic driving physics including drifting/skidding? At the moment I am using move and rotate which looks good on screen but doesn't feel like the right way. Searching on this forum throws up a few results with out of date links.

The_Gamesalad_Guru

Check out my series on the physics engine. Click the guru link. You might also pickup a template on one of the third party sites to see how they did racing games.