Subject: Re: [stella] Boulderdash - musings and screen demos From: "Andrew Davie" <atari2600@xxxxxxxxxxxxx> Date: Thu, 3 Apr 2003 18:18:58 +1000 |
> 00 - Blank > 01 - Dirt > 10 - Boulder > 11 - Diamond There are about 10 different thingies. Butterflies, wall type 1, surrounding wall, etc... I've had a brief examination of your suggestion - the problem is that there are very large screen areas in Boulderdash - I imagine we're probably looking at a 64 x 64 playfield. Thomas and I have had some discussions on this, and storing the PF as seperately packed 'planes' using some sort of RLE compression *might* be feasible. That is, pack only the dirt (using, perhaps, a compression generally better suited to lots of solid and little gaps - and, thinking on the fly, here... wherever there's a wall, mark it as dirt TOO - so that we get better RLE efficiency)... in one plane, and the diamonds in aoother, etc. It would be a major pain to modify on the fly, but possibly the only way to get large playfields into RAM. I'm thinking, though, of designing the display system first and *then* worrying about the compression. Basically I really want to start a cartridge standard which provides bankswitching and extra RAM (say, 1 or 2K). That would *really* open up the doors to interesting programs. I might work on a scrolling Interleaved ChronoColour playfield, just as a bit of fun and yet another proof of concept. Cheers A ---------------------------------------------------------------------------------------------- Archives (includes files) at http://www.biglist.com/lists/stella/archives/ Unsub & more at http://www.biglist.com/lists/stella/
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