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using Manic Miner and Jet Set Willy game engines
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Message: 5281
Author: john_elliott_uk
Date: 12/12/2005
Subject: Re: Proposal: JSW patch to display room-number
In manicminerandjetsetwilly@yahoogroups.com, andrewbroad wrote:
__________The Bathroom__________
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This is sufficiently easy that I've just implemented it.
<http://www.seasip.demon.co.uk/Jsw/patches.html#roomno>
At some point I'll have a Patches page on my website, with all the
patches I've implemented (so far, plus the above), and a systematic
method for applying them (perhaps the differences as determined by
SPECSAISIE comparing an unpatched game with a patched version, plus
the possibility to specify the preconditions under which the patch
is applicable, in terms of the values at specified addresses).
Now, this is where it gets complex. Several of my patches (Wibble,
Wobble, Jiggle and now RoomNo) - and no doubt several of yours -
contain additional code which could, in theory, be loaded anywhere in
memory. To get these all loaded satisfactorily, we'd need a proper
allocation system, and the patches would need to be stored in a
relocatable format.
Currently JSWED's auto-patch screen just stores a list of locations
with their 'old' and 'new' values. If all the locations match 'old',
the patch can be applied; if they all match 'new' it can be removed;
otherwise the checkbox is greyed (well, blued) out.
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