Path: chuka.playstation.co.uk!news
From: James Shaughnessy <james@manc.u-net.com>
Newsgroups: scee.yaroze.beginners
Subject: Re: angles, angles
Date: Tue, 24 Nov 1998 19:01:10 +0000
Organization: PlayStation Net Yaroze (SCEE)
Lines: 44
Message-ID: <365B0276.4760@manc.u-net.com>
References: <72spa7$dvm12@chuka.playstation.co.uk> <72sr28$dvm13@chuka.playstation.co.uk> <3652971c.228584498@news.playstation.co.uk> <731up3$olq9@chuka.playstation.co.uk> <3654E715.74C8@manc.u-net.com> <739qi2$ekm13@chuka.playstation.co.uk> <36588BB6.65EC@manc.u-net.com> <73cs2m$no810@chuka.playstation.co.uk>
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Darren Jackson wrote:
> Have you ever been in a position where no matter how many times you
> bang your head against a brick wall, the wall doesn't budge? I think
> I have a mental block at the minute! Changing the code as you
> suggested doesn't make any difference (note I used >>9 because >>12

It is something that will just 'click', usually when you're not
banging your head against the wall, but some irrelevant time.  I
see now that the code I gave you wouldn't sort out the problem
(D'OH!) although it did highlight a classic mistake (location of
the bitshifts.)  Phew.

You need to add a scaling function on the SPRITE's coordinates,
but you cannot do that if you are still using the .x .y members
of the GsSPRITE structure to handle its position -- you will need
to create your own player struct:

tyedef struct {
  long x;
  long y;
} TANK;

TANK Tank;

Then make Tank.x and Tank.y your scaled coordinates (*4096) and just
before GsSorting the actual sprite, set the sprite's .x and .y values:
tanksprite.x = Tank.x>>12;
tanksprite.y = Tank.y>>12;

This WILL allow you to get the tank to move as slow as you want.
Honest ;-)  So when Tank.x = 4096 it actually refers to sprite.x = 1

Also, you can put all of the Tank's variables in its struct, which
will tidy it all up and allow you to add more tanks very easily.
If you have trouble still I could help much better if you posted more
code, but this should sort it out.  Keep banging!  (oo'er).

Later,
Jim
-- 
-----------------------------------------
James Shaughnessy    james@manc.u-net.com
http://www.netyaroze-europe.com/~shaughnj
-----------------------------------------