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Terry Blunts CoOrdinate Collision Program

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  Terry Blunts CoOrdinate Collision Program Richard Ashbery <basura@invalid.addr.uk> - 2019-07-30 18:14 +0100
    Re: Terry Blunts CoOrdinate Collision Program News <chrisjohnson@spamcop.net> - 2019-07-31 14:38 +0100
      Re: Terry Blunts CoOrdinate Collision Program News <chrisjohnson@spamcop.net> - 2019-07-31 15:22 +0100
      Re: Terry Blunts CoOrdinate Collision Program Richard Ashbery <basura@invalid.addr.uk> - 2019-07-31 18:56 +0100

#5805 — Terry Blunts CoOrdinate Collision Program

I've cast my eye over Terry Blunt's excellent CoOrdinate program after
making it run on a Raspberry Pi/Full HD monitor. I can't figure out
what's causing objects to stick together (2 or 3 pairs sometimes with
gap) and sometimes a wobble (run CoOrdinate_FHD for some seconds to
see). When a moving object collides it then becomes part of the new
pair. A similar thing happens when the object is static.

The original program (MODE 9) had only 4 filled circles but I've
increased these to 30 - it still exhibits same problem. Any programmer
who would like to take a peek/fix then download from...

http://www.riscosbasic.uk/problems/Terry_Blunt.zip

Information is located in a PDF book...

http://www.riscos.com/support/developers/agrm

and CoOrdinate collisions are covered in section 5.4

Richard

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#5806

In article <57dbc97aa6basura@invalid.addr.uk>,
   Richard Ashbery <basura@invalid.addr.uk> wrote:
> When a moving object collides it then becomes part of the new
> pair. A similar thing happens when the object is static.

I think you need to change a line in PROCupdate.

Original:
IF a%*a% + b%*b% < c%*c% PROCbounce

Change to:
IF a%*a% + b%*b% <= c%*c% PROCbounce

-- 
Chris Johnson

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#5807

In article <57dc398c98chrisjohnson@spamcop.net>,
   News <chrisjohnson@spamcop.net> wrote:
> I think you need to change a line in PROCupdate.

No - that doesn't solve the problem.

-- 
Chris Johnson

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#5808

In article <57dc398c98chrisjohnson@spamcop.net>, News
<chrisjohnson@spamcop.net> wrote:
> In article <57dbc97aa6basura@invalid.addr.uk>, Richard Ashbery
>    <basura@invalid.addr.uk> wrote:
> > When a moving object collides it then becomes part of the new
> > pair. A similar thing happens when the object is static.

> I think you need to change a line in PROCupdate.

> Original: IF a%*a% + b%*b% < c%*c% PROCbounce

> Change to: IF a%*a% + b%*b% <= c%*c% PROCbounce

No sadly it doesn't - thanks for trying. Let me know if you have any
other ideas.

Would make a great screen saver.

Richard

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