Resource centre for ZX Spectrum games
      using Manic Miner and Jet Set Willy game engines

 

 

	Previous message		Next message
	Previous in thread		Next in thread

 

 

Message: 6731

Author: andrewbroad

Date: 19/03/2011

Subject: Re: Rope colour

 

Eq. wrote:

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.

Drawing a rope entails plotting pixels, not setting colour-attributes.

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

 

 

	Previous message	Back to the Yahoo! Archive home page	Next message
	Previous in thread		Next in thread