Saturday, May 17, 2008

[game] ragsmash

I just corrected the 'elastic band' problem in Ragdoll Smasher. This was due to a different handling of timers in XP and Vista.
This is now fixed!

Tuesday, May 13, 2008

[game] Ragsmash on YouTube

Someone posted a video of him playing Ragdoll Smasher on YouTube :-) watch it here

At least I know someone played the game ;-) It's really cool for a 'wannabe' game developer such as myself to discover this kind of things. Highly enjoyable.

A few explanations on the weird things happening that the player points out:
- guys stuck mid-air happen because the game only simulates 3 bodies. So it assumes others already landed. I could correct it ... but well, it's sort of fun.
- the 'elastic band' effect is more difficult. I have to look into it but it is likely due to instability in the stepping of the physics. Due to this, a very large force is produced. ODE is not able to propagate forces fast enough and one bone flies away while the rest of the body remains where it is.

Anyway, I am always happy to hear about ideas for a new version of Ragdoll smasher, so feel free to make suggestions. I had another stupid idea involving a chainsaw ... I played too much Doom I think ;-)

[C#] grabing pictures from a webcam

I have been looking for a simple way to grab a picture from a webcam, using C#. Well, it appears it is not so simple :-) The easiest solution I found is described here.

The code is simple, the only difficulty is to install the WIA sdk before (download from here, Don't forget to execute 'regsvr32 wiaaut.dll' in a command line, after copying the DLL in WINDOWS\system32.

WIA cannot be used for videos it seems. For this you'll need a DirectShow wrapper. (Note that the FTP is nicer in the sample code above).

And, if you just need to grab images and send them to an FTP, use Dorgem.

That was my 2 cents on webcams :-)

(I found Scott Hanselman's blog to be a great source of info on this)