Question

i’m wondering how can i “sync” the speed (obviously, to the less fast) of different PC ?
My is a 2d racing game, written in C# + SDL.NET.
How to “move” object on screen at the “same” speed on all PCs sending “state” variable only 3 times per second (for instance) ?
Thanks

Answer 1

This is the friendliest article I’ve read on the matter. You should look at all the game physics articles from this guy (GafferOnGames)

Fix Your Timestep!

Even an RK4 integrator is sensitive to
the amount of time you step when
integrating. Decouple your physics
timestep from the display framerate so
that your simulation behaves exactly
the same way each time it is run.

…then continue with this one:

What every programmer needs to know
about game networking

A brief overview of the history of PC
multiplayer games. Discover how RTS
games were able to synchronize
thousands of units over a 28k modem,
and how first person shooters hide lag
with client side prediction and
latency compensation.

Hope you’ll find it as eye-opening as I did.