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using Manic Miner and Jet Set Willy game engines
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Message: 3954
Author: jgh@arcade.demon.co.uk
Date: 01/03/2004
Subject: Re: unused sprites in jsw..
> Message-ID: <c1iam0+juen@...>andrewbroad <no_reply@yahoogroups.com> wrote:
> dasse68 wrote:
> > can somebody tell me what kind of sprites in jsw which not are
> > used in the game?
> > I've heard about some "periscope" a hat etc..
>
> In the original JSW, the following sprite-pages are unused:There's a list at http://www.mdfs.net/Software/JSW/Docs/Sprites
> - 151 (unused code - safe to overwrite)
> - 158 (only if the colour-code routine is bypassed)
> - 167-170, 179 (blank)
>
> The "periscope" is Sprite-Page 177. SPECSAISIE 1.3's _Graphics_
> function will show us the graphics:
The names are ones that Greg Heslington and I came up with back in 1985.
The numbering relates to my JSW Sprite editor. I think that "Sprite Page"
that other people use is the high byte of the spite address in my list.
One of these days I'll upload the spites Greg and I created, and convert
them so they're viewable in a browser.
Thinking about uploading JSW resources, are there any prefered or common
JSW data file formats? I just save blocks of memory, so rooms are
multiples of 256 bytes, sprites are multiples of 32 (single) or 128 (block
of four) bytes, etc. However, I see a usefulness in a file format for a
room definition that also details what guardian classes the room's
guardian data references, and what sprites those guardians use.
Some years ago I made an initial stabe at working out the .JSE file format
but got no further than:
----8<----
JSE File
========
Bytes 0-255 : Standard Room Definition
Bytes 256-511 :
----8<----
--
J.G.Harston (JGH BBC PD Library) 70 Camm Street, Walkley, SHEFFIELD S6 3TR
jgh@... - Running on BBCs & Masters with SJ MDFS FileServer
Z80+6502/CoPro+Tubes/Econet+SJ - - - - - - - http://www.mdfs.net/User/JGH/
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