FWD: RE: Helping my nephew with collision detection

[Karl Ramberg]

Michael Rueger wrote:
> 
> From: "Andreas Raab" <Andreas.Raab at squeakland.org>
> To: <squeakland at squeakland.org>
> Subject: RE: Helping my nephew with collision detection
> Date: Mon, 2 Sep 2002 00:05:06 +0200
> 
> Karl,
> 
>  > I made a Space Invader Tutorial for the etoys.
> 
> That reminds me - some time ago I made a similar experiment but with one
> difference which avoids having to fall back into Smalltalk programming.
> The way I solved the problem of "deleting" a bullet from the screen is
> that I had a holder named "ammo" which contained all the bullets.
> Therefore you could replace the "bullet delete" line with a line saying
> "ammo append bullet" and also limit the number of bullets a player can
> fire.

Sounds like a nice solution. I'm going to check it out, and maybe change
the tutorial to use it. That way the tutorial also covers holders. 

Karl