[Coco] Coco game engine demo

[Mark McDougall]

On 5/02/2013 3:20 AM, Luis Antoniosi (CoCoDemus) wrote:

> lot of arcades with hardware sprites right ?, specially sprites on the
> edges of the screen where the scroll is happening.
>
> once you scroll all software sprites scrolls too. in order to update the
> software sprite position first it must restore the old bounding box or
> tiles beneath it and draw the sprite to the new position. But then comes
> double buffering (otherwise it will blink) where the 2 pages are not in the
> same scroll position, specially for games like super mario where the scroll
> is ominidirectional.

Yes, I'm well aware of this. The context of the discussion was wrapping 
addresses on vertical scroll - I wasn't talking about performance of the 
entire engine, but rather the fact that adding to the tilemap as it scrolls 
is only a few bytes per line.

Regards,

-- 
|              Mark McDougall                | "Electrical Engineers do it
|  <http://members.iinet.net.au/~msmcdoug>   |   with less resistance!"