Re: [Speed-dreams-devel] Trac ticket #844: best lap time & lap in board 3 network game

[Speed D. <no...@so...>]

#844: best lap time & lap in board 3 network game
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 Reporter:  torcs-ng           |       Owner:  tomlowshang@…        
     Type:  defect             |      Status:  assigned             
 Priority:  major              |   Milestone:  2.1.0                
Component:  Network interface  |     Version:  2.1.0-dev            
 Keywords:  network race       |  
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Comment(by tomlowshang):

 All the peers in the game send lap data to every other peer. 1) They start
 sending on lap one, even though no lap data has been computed yet. 2) They
 even send lap data for remote cars back to the peer controlling that car!
 3) But the biggest problem is that each pear is computing the lap data.
 Its yet another split brain design flaw in the network code.

 Fixing 1) and 2) is easy but then I get very strange lap output (car loses
 lap even though its only 0.5s behind leader, car skips a lap, some lap
 data is still not displayed) probably because of 3).

 The proper fix is that only the server should compute all timing data and
 transmit it to the clients. This requires modifying the race engine and is
 probably not something that should attempted for 2.1.

 A short term solution is to not send lap data between the computers and
 let each use its locally computed lap data. The big problem is that the
 results on each computer will never be identical. The differences may
 worse than TRB races because human drivers are less consistent than the AI
 drivers.

 For testing purposes, I'll attach a patch for the short term solution.

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Ticket URL: <http://sourceforge.net/apps/trac/speed-dreams/ticket/844#comment:2>
Speed Dreams <http://sourceforge.net/projects/speed-dreams>
An Open Motor-sport Simulator featuring high-quality 3D graphics and an accurate physics engine, all targeting maximum realism as well as exciting new features, cars, tracks and AI opponents to make a more enjoyable game for the player.