[ bzflag-Bugs-864861 ] 1.10 tank spawn algorithm buggy

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Bugs item #864861, was opened at 2003-12-23 08:22
Message generated for change (Comment added) made by bogusopus
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Chris McCoy (bogusopus)
Assigned to: Nobody/Anonymous (nobody)
Summary: 1.10 tank spawn algorithm buggy

Initial Comment:
The algorithm that spawns tanks on the field is very
buggy.  Most of the time tanks will spawn very close to
other tanks (1 or 2 tank-lengths apart). Sometimes,
directly in front of or behind the other tank.
Sometimes you are spawned very close to the tank that
just killed you.

In some instances you are spawned in the line of
already fired shots, so there is no time/opportunity to
avoid being hit.  This is especially problematic on a
high-number-of-shots server. 

Have tested with -sb and without, and it doesn't make a
difference in the spawning algorithm pattern.

Are running most recent CVS:
1.10.3.20031222-MAINTENANCE-linux-gnu

-S...@bz...

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>Comment By: Chris McCoy (bogusopus)
Date: 2003-12-30 08:21

Message:
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We tried using CVS with your additions, and the spawning is
still noticably buggy.  It's a little better, but
unfortunately, not enough better.

While there are still occasional problems with spawning in
the line of already fired shots, the more common problem is
spawning near the tank that just shot you, thus allowing you
to shoot them (if you spawn behind), or them to shoot you again.

It creates a die. spawn. die again, scenario.

(using 1.10.3.20031228-MAINTENANCE-linux-gnu)


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Comment By: Dave Brosius (dbrosius)
Date: 2003-12-27 07:54

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OK. 12/27/03 spawn improvement added to keep tanks from 
spawning 'too close' to an enemy tank. There still is no 
consideration for bullets. This is a server side fix, so if you 
are running a server you may want to consider upgrading to 
the latest code in cvs, if you can build your own.

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Comment By: Dave Brosius (dbrosius)
Date: 2003-12-27 07:50

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OK. 12/27/03 spawn improvement added to keep tanks from 
spawning 'too close' to an enemy tank. There still is no 
consideration for bullets. This is a server side fix, so if you 
are running a server you may want to consider upgrading to 
the latest code in cvs, if you can build your own.

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Comment By: Dave Brosius (dbrosius)
Date: 2003-12-23 15:53

Message:
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user_id=66596

The spawn algorithm was changed from the client machine to 
the server machine. As the server doesn't maintain state 
regarding bullets, etc. It does a lousy job of picking a 
position.  Currently it is just random. Eventually state will be 
added to the server, and the algorithm will be improved. This 
is a known issue. Sorry bout it. -sb is the only thing that can 
help alittle as sometimes you will be placed on buildings, 
which is less likely to be in the line of danger. Of course it 
depends on the layout of the world, whether this is really true 
or not.

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