I have discovered a major discrepency between replays of on-line races from
one on-line driver to another.
I have a replay at Mexico which shows Graeme Nash's car smashing into the
barrier, wiping off 3 wheels & catching fire. He continued on fire for
several seconds not being slowed & his fire went out & the wheels
re-appeared. He then disappeared from my replay for several more seconds. No
way could he have shift-r'd without stopping.
At the time I put it down to warping. I have seen cars falsely go off before
on replays & watching other drivers using live feed - this time there was
something to hit.
Race host John Simmons' replay shows a different set of events (no accident,
fire etc.)
I have also seen a car on fire & minus some wheels carrying on for several
laps.
It puts into question the validity of a replay of any driver connected
on-line - the only true replay will be on the client's PC for that driver.
It may just be on PCs with relatively low (modem) connections that get the
problem - a cable connection may be fine for all drivers.
It could present some difficulty for those in charge of racing leagues &
enforcing driving standards.
Anybody else have any observations or opinions?
I have put together a little web site for my fellow IGPS drivers referring
to the subject.
You may wish to view it at [link lost in import] but don't
expect a flash site, it is simply a collection of images for referring to
this anomoly.
Cheers
Tony
I've seen a post on this subject, or something similar. If I remember
correctly it's the host computer trying to predict whats happening when
the return signal from the client is slow in returning. Or something
like that. I have seen things similar while following someone. The host
PC overcompensates for what it thinks is happening.
FWIW This is just my interpretation of what I think I remember reading
in this board a while back.
"ZZ"
--
Busch Carpentry
"Plans?"
----------------
Busch Motorsports
"Remember racecar is racecar spelled backward"
I've seen the same thing happen. I was coming to the hairpin at Mosport
when I came upon a Lotus that was missing its rear wheel. I passed on
outside and turned in, thinking it was surely limping along slowly. We
bumped and it took off in the distance. Later, as I came upon it again, I
saw it had all 4 wheels!
My speculation on what happened:
Each instance of GPL probably calculates the dynamics and positions of all
the other cars between each position update received. If position updates
are sent and received with little delay and, more importantly, small
variation between the delays, other cars appear to move smoothly.
All the cars jumping around and warping that occurs with poor connections is
probably due to the delay variation between the IP packets received which
contain the co-ordinates of the other cars.
I guess my GPL calculated that the Lotus hit the guardrail and removed its
rear wheel (I saw it rolling), when in fact, the player didn't hit anything
(or at least not hard enough to loose his rear wheel)..
And if the driver of that Lotus, SRY for turning in on you.
Brian
This happens much less often when using the core.ini file in your GPL
directory.
Thierry Cailleteau
Brian a crit dans le message ...
