Comments on: Collision Detection and Bounce Calculation using Colour Maps (part 1)

By: Michael Hart

Michael Hart — Tue, 08 May 2012 12:58:08 +0000

I’m still waiting for part 2
I can’t figure out what you might have done with your recursive algorithm, I’ve implemented a similar method however it does not account for non-embedded collisions. Care to share?

By: P4INKiller

P4INKiller — Mon, 16 Apr 2012 13:43:06 +0000

Somebody beat you to the punch, d’oh!

http://active.tutsplus.com/tutorials/games/pixel-level-collision-detection-based-on-pixel-colors/

By: swingpants

swingpants — Thu, 01 Mar 2012 20:31:41 +0000

Ha – many apologies to all – Part 2 went missing in action. I’m due to re-visit colour maps on a project in the very near future. I’ll put together a proper post about it then

By: P4INKiller

P4INKiller — Thu, 01 Mar 2012 15:19:56 +0000

Hey, thanks for this article, will definitely save me some headaches.
I know it’s been a while, but I’m very interested to see a part two of this.

By: Drew

Drew — Thu, 07 Jan 2010 17:41:14 +0000

Thanks for the status update. Still eagerly (but patiently) waiting for part two!

By: swingpants

swingpants — Thu, 07 Jan 2010 17:33:32 +0000

Yes, the method is excellent for detecting collisions with pixel perfect accuracy. In terms of applying ‘bounce’ impulses: when it comes to cars you’d need to think about crumpling – will the car dent or break up causing the bounce impulse to be deflected somewhat. This method does give you an initial impulse – which is a starting point for you to then implement some bespoke bounce method.

Apologies to everyone – I promised a part 2 months ago and have yet to get around to it. Work commitments have kept me tied up. I do intend to do some more work on this in the very near future though.

By: Dave

Dave — Wed, 06 Jan 2010 20:42:52 +0000

thanks great tutorial, looking forward to part2 to see how you implemented this! would this method work for other objects other than a circle? say a car represented by a rectangle? cheers.

By: Neil

Neil — Thu, 24 Sep 2009 13:02:55 +0000

Really nice, hope you do get around to part 2 one day, maybe even a few method snippets to help others achieve this would be good.

Thanks for sharing.

By: swingpants

swingpants — Mon, 03 Aug 2009 13:21:52 +0000

I did some webcam apps a couple of years ago, and as flood fill is an efficient way of finding movement, it lends it self to colour map collision detection. I did the classic balls landing on head experiment, and rolling off when moved – worked brilliantly.

Apologies for not getting part 2 of the colour map article up yet. I got 1/2 way through it back in May but have been up against it workwise since then. I will finish and post asap – hopefully in the next few weeks.

By: Og2t

Og2t — Mon, 03 Aug 2009 10:45:15 +0000

Thanks for sharing, I will try it to detect collisions against the viewer’s head (using webcam).