Re: [stella] Multi game with collision detection! (multi050.bin) included

Subject: Re: [stella] Multi game with collision detection! (multi050.bin) included
From: Greg Troutman <mor@xxxxxxx>
Date: Mon, 08 Dec 1997 08:31:08 -0800
Robert A. Colbert wrote:
> 
> Comments and suggestions (as always) are greatly apprectiated!

Another method of refining collision detection with rectangular areas is
to clip the test rectangle some.  You lose collisions right on the
border, but also do not detect as many that are way out in non-used
areas...

Say a sprite and it's rectangle looks like this:

	---------
	|X     X|
	| X   X	|
	|  X X	|
	|   X	|
	---------	

It might work a bit better if you test for collisions in an area like
this:

	 X     X	<-- fringe pixels do not collide
	 -------
	 |X   X|	<-- must hit the heart of the sprite
	 | X X |
	 -------
	    X  
	
It depends a lot on the shapes of your sprites and the feel of the
game...

--
mor@xxxxxxx
http://www.crl.com/~mor/

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