From:	Yamaha / XYZZ <scriven AT CS DOT ColoState DOT edu>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Screen Scrolling
Date:	Wed, 06 Nov 1996 11:40:25 -0700
Organization:	XYZZ Software Co.
Lines:	25
Message-ID:	<3280DB99.794B@CS.ColoState.edu>
References:	<michael_sweeney DOT 3 DOT 000C6877 AT videoway DOT com>
NNTP-Posting-Host:	seurat.vis.colostate.edu
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Michael Sweeney wrote:
> 
> I was wondering on how to implement a HUGE scrolling screen, similar to games
> such as C&C and Warcraft. I've checked out most sites and could not find any
> info on how to do it, and Allegro unfortunatly doesn't support the size of
> virtual screen I would need. So if I want to use something other than virtual
> screen how should I go about it?

Just how big do you want?

The library I use (mine) supports images as big as you can fit in
memory, which would be about 4096x4096 on my machine.

But it sounds like you want to use a tile-based background.  What you'll
need to do is store a bunch of tiles somewhere, and the background will
be a grid of numbers representing which tiles go where.  Then you just
create the tile background in real time, drawing from the large tile map
to a smaller screen buffer.



-- Yamaha / XYZZ
mailto:scriven AT CS DOT ColoState DOT edu          
mailto:scriven AT VIS DOT ColoState DOT edu
http://www.vis.colostate.edu/~scriven/

- Raw text -