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using Manic Miner and Jet Set Willy game engines
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Message: 5956
Author: dasse68
Date: 10/11/2006
Subject: Re: Static v Dynamic POKEs (items & teleporting in JSW)
--- In manicminerandjetsetwilly@yahoogroups.com, andrewbroad
>
I could say "Andrew! you need a JOB!!" .... but you are so weird in a
> skarpo.rm wrote:
> >
> > Started the game as normal, typed in the poke I found on the
> > Tipshop site: "POKE 41983,255 You have only to collect the tap to
> > see the finale effect" ... nothing different on-screen.
> >
> > Picked up the tap(from the tub, right???) and ambled on over to
> > the Bedroom.
> >
> > She was there.
>
> You need to understand the difference between:
>
> * a STATIC (compile-time/load-time) POKE: a poke that has to be
> applied before you start playing the game - before you even reach
> the title-screen.
>
> * a DYNAMIC (runtime) POKE: a poke that has to be applied while you
> are playing the game.
>
> POKE 41983,n is a static poke for setting the size of the item-table
> to 256-n (hence a JSW game must have at least one item, and at most
> 256).
>
> When you start playing the game, the byte at 41983 is copied to
> 34270, so to have to collect only one more item whilst playing the
> game, use the dynamic POKE 34270,255.
>
> (Static values are copied to dynamic addresses when JSW is run from
> BASIC, and at the end of a game before returning to the title-
> screen - they are NOT copied when starting the game from the title-
> screen, hence if you apply a static POKE on the title-screen, you'll
> have to start and restart the game to see its effect.)^1
>
> Another useful dynamic POKE is 34271,s, where s is the game-status
> you wish to enter:
> * 0: normal (not collected all items)
> * 1: Maria disappears
> * 2: Willy runs to the right, looking for the toilet
> * 3: Willy in the toilet
>
>
> > got bored and still standing there I decided to take a look at the
> > Quirkafleeg screen.
> >
> > Again using Tipshop I found that as being room number 16 and also
> > found a poke to transport over there.
> >
> > "Start in room x 34795,x:33824,x (x=1-63, see list)"
>
> POKE 34795,x is a static poke for setting the start-room to [x].
> To start in "We must perform a quirkafleeg" [16], use POKE 34795,16.
>
> POKE 33824,x is a dynamic poke for setting the current room to [x].
> It's like teleporting, but the current-room buffer is not refreshed
> until you lose a life, so at first it will look like you're still in
> the room you were in before you applied the poke. However, the
> effect on items and Maria is instantaneous, i.e. you will see [x]'s
> items immediately.
>
> Personally, I prefer POKE 33824,x to using WRITETYPER for
> exploration-purposes (or to escape from a trap which makes a JSW
> game not Maria-completable).
>
>
> > So, in Spin I punched 34795,1
>
> which means: set the start-room to "The Bridge" [1].
>
>
> > hit POKE then I punched in 33824,6
>
> which means: set the current room to "Entrance to Hades" [6].
>
>
> > hit POKE ... went back to the game, lo and behold, guess who
> > dissapeared right in front of me?
>
> Maria, because she only appears when the current room (according to
> the byte at 33824) is "Master Bedroom" [35].
>
>
> > Anywho, went to bed (and touched the pillow/wall) and got the Die
> > Mortal screen.
>
> Because when you lose a life, it refreshes the current-room buffer,
> i.e. copies "Entrance to Hades" [6] to #8000-80FF, and does the rest
> of the room-initialisation (according to the code at #8912 onwards).
>
> --
> Dr. Andrew Broad
> http://geocities.com/andrewbroad/
> http://geocities.com/andrewbroad/spectrum/
> http://geocities.com/andrewbroad/spectrum/willy/
> ---
> Footnote ^1: The code I'm talking about is at #87CA.
>
wonderful way that its not right.. love you man!
/Dasse from Sweden
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