Resource centre for ZX Spectrum games
using Manic Miner and Jet Set Willy game engines
Archive of the
Manic Miner & Jet Set Willy Yahoo! Group
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Message: 7129
Author: ian.rushforth
Date: 04/08/2017
Subject: Re: Manic Miner Air Supply - a more refined approach
> There is another glitch which occurs in a room with a limited air supply in a JSW64 game. Just after the air
> supply runs out, the final character of air is briefly filled in again just before Willy is killed.
Sorry, I forgot to add - the other reason that the final (leftmost) character of air reappears in a brief glitch, when the air supply runs out in JSW64, is because the value of Offset #DF is never decremented below #24 by the 'Decrease the air supply' routine, whilst the value of Offset #E0 will have wrapped round below zero to #FC at the instant when the air runs out (which is interpreted as seven infilled pixels in the final character of air).
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