Question

I want to create a website that allows me to sketch something in real time and for people to be able to view that sketch in real time.

My thoughts – all clients need to connect to a game server – including me the sketcher.
I sketch something and the “sketch data” gets sent to all clients, and their displays get updated.

My questions – I know this has been done before, but how to represent a sketch? With RGB values for each pixel?

If I’m sketching in realtime then clients need to be updated a couple of times each second ( to make it look fluid ) – do real games update clients that frequently?

Answer 1

Real multiplayer games update clients about 50~ times a second – if all have a fast connection (so 20 ping is achieved).
Well yes, I guess sending it as an array of points (1 dimensional – containing all the points) – and the simply ‘draw lines’ between all points – like you do in C#.
If you don’t draw lines and simply draw the pixel it wont look like a sketch but like a lot of dots.