Snap card game app

Size Category Games. Compatibility iPhone Requires iOS Mac Requires macOS Languages English. Price Free. App Support. Family Sharing Up to six family members will be able to use this app with Family Sharing enabled. More By This Developer. Chess Clock - Free. The second way to dismiss the keyboard is to add the following code to the end of viewDidLoad :. Note that you need to set the cancelsTouchesInView property to NO, otherwise it will no longer be possible to tap on anything else in the screen, such as the table view and the buttons.

Leave the Start button alone for now, but it would be nice if you could return to the main screen by tapping the X in the bottom-left corner. This button is hooked up to exitAction: , which is currently empty.

There will be several view controllers in this app, and they will communicate with one another through delegates to keep the dependencies minimal and clean. When the exit button is tapped, the HostViewController tells its delegate that the Host Game screen has been cancelled. The delegate is then responsible for closing the screen.

In this case, the role of the delegate is played by the MainViewController, of course. Change the following line in MainViewController. Lastly, add the implementation of the delegate method to MainViewController. This simply closes the HostViewController screen without an animation. Run the app and try it out. Note: For debugging purposes, I like to make sure my view controllers and any other objects really do get deallocated when the screen gets dismissed, so I always add a dealloc method to my view controllers that logs a message to the Debug Output pane:.

If you have two objects that have strong pointers at each other, then they will stay in memory forever. The Host Game screen is done for now. Before you can start the Game Kit session and broadcast your service, you have to build-in the Join Game screen. This screen looks very similar to the Host Game screen, but there are enough differences below the hood to warrant making this a totally separate class rather than reusing or subclassing the HostViewController.

Disable the XIB option, as I have already provided a nib for you in the starter code. This is very similar to what you did with the Host Game screen. Replace JoinViewController. You could have used a new view controller for that, but this is just as easy.

Note: When writing multiplayer games or any networked software, really you basically have a choice of two architectures: client-server and peer-to-peer. The person who hosts the match is the server, and all the other players are the clients. In a true peer-to-peer game, however, all participants are equal. All the peers do the same amount of work, but you need to take care to make sure each peer sees the same things, since there is no central authority. Again, in this tutorial, we will be using a client-server model, where the peer who hosts the game will be the server.

Now that you have the basic Host Game and Join Game screens working, you can add the matchmaking logic. When a player taps the Host Game button, her device should broadcast the availability of the Snap! When a player goes into the Join Game screen, his device should start looking for any servers that are making the Snap! Rather than putting all this logic into the view controllers, you will be making two new classes, MatchmakingServer and MatchmakingClient.

Before you create these new classes, first add Game Kit to the project. Open Snap-Prefix. The server has a list of connected clients and a variable that limits how many clients may connect at a time. Currently, MatchmakingServer has only one method, to start broadcasting the service and accepting connections from clients.

This is mostly boilerplate stuff. Here is where you create the GKSession object and tell it to operate in server mode. Add an import in HostViewController. This creates the MatchmakingServer object as soon as the Host Game screen appears, and tells it to start accepting connections. It also places the name of the device from session. Behind the scenes, Game Kit will garble this into a unique Bonjour identifier. Run the app and tap the Host Game button. Replace the contents of MatchmakingClient.

This somewhat mirrors what the MatchmakingServer did, but instead of connected clients, it has a list of available servers. Note that you now create the GKSession object in mode GKSessionModeClient, so that it will start looking for available servers but not broadcast a service of its own. Now integrate this new class into the JoinViewController, so you can start connecting servers with clients. First, add an import to JoinViewController.

At this point, you can start testing. Make sure you either have two or more! On one of the devices, tap Host Game, and on the other tap Join Game. These are messages from Game Kit itself. The client may also show messages from Game Kit, but it should say:.

In other words, the client has detected the presence of the server. Note: The peer ID is an internal number used by Game Kit to identify the different devices that are partaking in the session.

Every time you run the app, your peers will get different IDs. If you have two or more devices, you can have more than one function as a server. For the purposes of this tutorial, a client can connect to only one of them, but it should detect them both. Ship, Captain, and Crew. Going to Boston. Left, Center, Right. Kings Corner. Page One. Texas Hold'em Poker. Hand and Foot. Gin Rummy. Liberty Fan Tan.

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