How to simulate a match with two player using LUA client

[takaaptech]

Hi,
Can you explain how to setup two player playing Checkers game or a player play with an AI using LUA?

I just run: lua ./main.lua -s localhost -p 3000 -n taka Checkers
and it shows:
connecting to: localhost:3000
successfully connected to server...
In Lobby for game 'Checkers' in session '2'

And then i create new terminal and run the same command as above, and then it shows: (It seems to game start and then over immediately)

connecting to: localhost:3000
successfully connected to server...
In Lobby for game 'Checkers' in session '2'
Game starting
Game is over. I Won! because: All enemy checkers jumped

(In 1st terminal, it shows: Game starting
Game is over. I Lost :( because: No checkers remaining
)
In server side:
Checkers - 2 @ 1043 Received new connection!
Checkers - 2 @ 1043 Received new connection!
Checkers - 2 @ 1043 Game is starting.
Checkers - 2 @ 1043 Game is over.
Checkers - 2 @ 1043 Client Checkers Lua Player disconnected
Checkers - 2 @ 1043 Client Checkers Lua Player disconnected
Lobby @ 1008 Game Session @ 1043 exited

Thanks very much!

[JacobFischer]

That all looks correct to me. Two Lua clients connected and played 'Checkers' in game session '2'.

I've added a markdown doc the the parent repo, Cadre here:

https://github.com/JacobFischer/Cadre/blob/master/howToPlay.md

It details, with screenshots, what (and to some extend why and how) to do to play games using Cadre.

Does this new document help you?

[takaaptech]

That's awesome! That document help me so much! Now i can understand that two client play by AI. But after match end, nothing in my output/gamelogs folder, so i can not see match detail on web under "Game Archieves". So can you take a look at that?

[takaaptech]

And if i try to use --log flag, it shows:

taka$ sudo node main.js --log
/Users/taka/Downloads/Cerveau-master/gameplay/log.js:52
_obj.filename = (_obj.filename || ("output/logs/log-" + _obj.server.name.replace(/ /g, ".") + "-" + utilities.momentString() + ".txt"));
^

ReferenceError: utilities is not defined
at Object._obj.log (/Users/taka/Downloads/Cerveau-master/gameplay/log.js:52:109)
at log (/Users/taka/Downloads/Cerveau-master/gameplay/log.js:16:10)
at Object.Class._initializeGames (/Users/taka/Downloads/Cerveau-master/gameplay/lobby.js:76:13)
at Object.Class.init (/Users/taka/Downloads/Cerveau-master/gameplay/lobby.js:36:14)
at Object.newClass as _mainClass
at Object. (/Users/taka/Downloads/Cerveau-master/main.js:31:13)
at Module._compile (module.js:434:26)
at Object.Module._extensions..js (module.js:452:10)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)

[JacobFischer]

Hmm. That's weird. Files should be generated in Cadre/Cerveau/output/gamelogs after you play a game. Make sure there's read/write access to those folders? What OS are you using?

The code for saving gamelogs happens in Cadre/Cerveau/gameplay/gameLogger.js:55 in the log:function (gamelog) function. Surprising I know. I've attached an error handler in case saving the gamelog generates. Maybe I did that wrong.

You could try this:
In Cadre/Cerveau/gameplay/gameLogger.js on line 63 where is says:

        var gzip = zlib.createGzip();

        gzip.on("error", function(err) {
            log.error("Could not save gamelog '" + gamelog.gameName + "' - '" + gamelog.gameSession + "'.", err);
        });

add in another error handler like this:

        var gzip = zlib.createGzip();

        // maybe the writeStream need an error handler?
        writeSteam.on("error", function(err) {
            log.error("Could not save gamelog '" + gamelog.gameName + "' - '" + gamelog.gameSession + "'.", err);
        });

        gzip.on("error", function(err) {
            log.error("Could not save gamelog '" + gamelog.gameName + "' - '" + gamelog.gameSession + "'.", err);
        });

See if that catches the error for you.

---

As for the --log error, thanks for catching that. I have no idea why I commented out the utilities require up top, but I fixed it in in my most recent Cerveau commit.

Now console output should be logged in Cadre/Cerveau/output/logs/. See if that works too, or if those output files too won't generate for you.

[takaaptech]

--log works with logged log-Lobby.@.1056-2015.10.01.00.17.30.271.txt and log-Checkers.-.1.@.1074-2015.10.01.00.18.41.554.txt
But gamelogs still empty. I run server on macos and with sudo then i think it read and write as normal. I will take a look at gameLogger.js later. Thank so much!

[JacobFischer]

So I've actually never tested Cerveau on Mac OS X. It could be an error there only on that OS. On Linux and Windows it works fine.

[takaaptech]

OK I just try to debug by print log to console and see that: line 167 of session.js run as normal:
gamelog: this.generateGamelog()
print inside generateGamelog works.
But line 55 in gameLogger does not run:
log: function(gamelog)

That means i guest that process.send can not reach to gamelog?

I test it by print to console. Maybe would you please teach me how to setup debug or using debug tool in nodejs. So i can help you to find some bugs in mac os. :)

[JacobFischer]

I created a new issue in the server repo at siggame/Cerveau#2 that documents this error better, hopefully I can find a siggame dev with a mac computer to find the bug.

If you want to try to find this error I debug Cerveau using the wonderful node-inspector, though debugging on multiple threads is hackish.

I'm closing the issue here as it does not appear to (and I have no idea how it could) be an issue with this Lua client.

Thanks for all your support in finding these bugs, and I invite you to continue taxing this framework as I've moved it to my development organization it was originally intended for.