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POGame Center - Sending and receiving data
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2011-01-01T12:58:56.520
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2011-01-03T21:27:39.727
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Body
EDIT: I have made a clean, new project, but still can't get it working. Please download it, there is a little code to look at and probably easy for a professional or anyone remotely experience to see whats I am doing wrong. Just trying to send that integer. <a href="http://www.2shared.com/file/fPOCLlg5/gkTest.html" rel="noreferrer">http://www.2shared.com/file/fPOCLlg5/gkTest.html</a> Hi I am trying to implement Game Center multiplayer in my iphone game and having trouble understanding the samples I have at hand in the Apple Docs and from third parties concerning sending and receiving data. Could someone please explain the code samples in the Official Apple docs here please: <a href="http://developer.apple.com/library/ios/documentation/NetworkingInternet/Conceptual/GameKit_Guide/MatchesandVoice/MatchesandVoice.html#//apple_ref/doc/uid/TP40008304-CH10-SW4" rel="noreferrer">http://developer.apple.com/library/ios/documentation/NetworkingInternet/Conceptual/GameKit_Guide/MatchesandVoice/MatchesandVoice.html#//apple_ref/doc/uid/TP40008304-CH10-SW4</a> Or help me figure out this sample code I was supplied with. Its a prebuilt class, made to handle all the game center tasks and a sample from it for sending and receiving data would be this: <pre><code>- (void) sendPosition { NSError *error; PositionPacket msg; msg.messageKind = PositionMessage; msg.x = currentPosition.x; msg.y = currentPosition.y; NSData *packet = [NSData dataWithBytes:&msg length:sizeof(PositionPacket)]; [match sendDataToAllPlayers: packet withDataMode: GKMatchSendDataUnreliable error:&error]; if (error != nil) { // handle the error } } </code></pre> And receiving: <pre><code>- (void)match:(GKMatch *)match didReceiveData:(NSData *)data fromPlayer:(NSString *)playerID { Packet *p = (Packet*)[data bytes]; if (p.messageKind == PositionMessage) // handle a position message. } </code></pre> My big question about this code form the official docs is: Where does <code>PositionPacket</code>/<code>Packet</code> come from? And assuming when you want to send/receive data you call them like so: <pre><code>[self sendPosition]; </code></pre> or <pre><code>[self match:(GKMatch *)match didReceiveData:(NSData *)data fromPlayer:(NSString *)playerID]; </code></pre> What do I enter as the match, data and playerID? E.g. I have an int named 'score' but is there not a special key I need to use something?
Tags
<iphone><objective-c><multiplayer><game-center>
Title
Game Center - Sending and receiving data
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