Show HN: Powderkeg, a realtime, synchronous, multiplayer HTML5 action game

Post by Arelius » Thu, Oct 04, 2012, 11:23 PM UTC

statico wrote: post #29

atroche wrote: post #26

You might want to consider using client-side prediction and lag compensation. Here's John Carmack describing how he used the aforementioned techniques to make Quake playable over the internet: http://fabiensanglard.net/quakeSource/johnc-log.aug.htm Here's how Valve do it: https://developer.valvesoftware.com/wiki/Latency_Compensatin... And here's another good article on the topic: http://gafferongames.com/networking-f…

All good links, thanks! We are in fact using client-side prediction and lag compensation. It's extremely difficult to make a perfectly-playable action game with 500ms ping — you'd be kicked off a Quake server with that kind of lag :) Powderkeg uses lockstep network synchronization and every client sees the same simulation (though the player you control has prediction). The network framerate is 10 FPS and the server w…

Post by statico » Thu, Oct 04, 2012, 11:30 PM UTC

TimJRobinson wrote: post #46

statico wrote: post #29

Earlier quoted context omitted.

All good links, thanks! We are in fact using client-side prediction and lag compensation. It's extremely difficult to make a perfectly-playable action game with 500ms ping — you'd be kicked off a Quake server with that kind of lag :) Powderkeg uses lockstep network synchronization and every client sees the same simulation (though the player you control has prediction). The network framerate is 10 FPS and the server w…

So with your lockstep I presume you're allowing the client to move instantly locally then syncing back with the server? As I'm getting some minor snapbacks (I probably have 200ms+ ping being in Australia) and usually lockstep (for RTS games anyway) doesn't have that and has input delay instead as the client waits for their moves to return from the server. EDIT: Ah cool I see it's explained in your post: http://blog.a…

Post by Arelius » Thu, Oct 04, 2012, 11:38 PM UTC

statico wrote: post #52

Arelius wrote: post #51

Earlier quoted context omitted.

Is there any way to display ping? Also perhaps the servers are a bit overloaded? Cause I'm playing from Palo Alto on a decent connection and the lag is making it pretty unplayable.

You can mouseover the tiny lag meter in your info square while playing to see ping stats. Your connection might be fine, but you might be matched with someone on a less-than-optimal connection.

Post by statico » Thu, Oct 04, 2012, 11:56 PM UTC

klinquist wrote: post #49

avi_e wrote: post #17

I'm getting these errors in Chrome (v. 22.0.1229.79 m): Unexpected response code: 404 :1 Channel error 'BROWSER_WS_ERROR': 'undefined' __runtime.js:1 Channel 0 closed. __runtime.js:1

Exact same thing here.

Post by statico » Fri, Oct 05, 2012, 12:06 AM UTC

DrCatbox wrote: post #44

Ah bomberman! Very cool. The game is a bit laggy for some reason for me, but still cool. How long did it take to make the graphics/sprites?