Resource centre for ZX Spectrum games
using Manic Miner and Jet Set Willy game engines
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Manic Miner & Jet Set Willy Yahoo! Group
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Message: 6731
Author: andrewbroad
Date: 19/03/2011
Subject: Re: Rope colour
Eq. wrote:
>Drawing a rope entails plotting pixels, not setting colour-attributes.
> I've been playing about with that unfinished .NET-based JSW48 editor
> of mine again. The latest silly addition is playback of the title
> and in-game tunes through the PC beeper :)
>
> Could someone help me out again and explain why the rope in The
> Beach is cyan, even though the room's background ink is white?
> Where does that cyan come from? The ropey stuff is not very
> thoroughly commented in the JSW48 disassembly.
Technically, an item collects itself when the colour-attribute of its cell has white INK.
The Air in "The Beach" has cyan INK. If it had white INK, the items would collect themselves immediately when you entered the room, as in "Swimming Pool".
When Willy is drawn in Air cells, their colour-attributes are modified so that the INK is white. This enables him to collect items.
When Willy is drawn in non-Air cells, the colour-attributes are not modified. Items in non-Air cells with non-white INK can be collected by arrows and white guardians, but not by Willy.
--
Dr. Andrew Broad
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