Resource centre for ZX Spectrum games
using Manic Miner and Jet Set Willy game engines
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Message: 6914
Author: andrewbroad
Date: 23/10/2016
Subject: Re: JSW64 MM: James Bond "GoldenEye" Rope
rushforthian wrote:
>>>There is no patch vector in "GoldenEye".
>>> P.S. And from the technical point of view, what is it that actually
>>> makes JB fall down from the rope?
>>
>> Its length.
>
> Andrew, would it also have something to do with a Patch Vector?
>
> Perhaps one of Geoff Eddy's, as featured in Room 53 (Emptying the Bit Bucket)
> in his game ZX Willy the Bug Slayer?
It uses a stationary rope that is too short for you to grasp; it throws you straight down.
Whereas the patch vector in "Emptying the Bit Bucket" allows you to jump up into Room 63 when you are to the right of Column 28, otherwise it sets the up-exit to 53 (the room itself), so that you cannot climb up out of the screen on the rope.
In JSW64MM:JB, every room's exits are set to the room itself. However, if I set the up-exit of "GoldenEye" to a room other than itself, then I can grasp the rope, but instead of taking me to the room above, it makes me reappear at the bottom of the screen, from where I can either jump up onto the bottom platform of "Golden Eye", or slide back down into the top of the room on the rope.
The reason that the rope doesn't take me to the room above is that JSW64MM:JB uses a global patch to disable room exits, so that going off the edges of the screen behaves as it does in Manic Miner.
--
Dr Andrew Broad
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