Beginning iOS Game Center and Game Kit: For iPhone, iPad, and iPod touch by Kyle Richter

Author:Kyle Richter
Language: eng
Format: epub, pdf
Publisher: Apress®
Published: 2011-11-15T16:00:00+00:00

Understanding Player Attribute Limitations

Player attributes can be used to assign these values to each player so that you can balance a team that contains the required players. However, as of iOS 4.3, there are a number of limitations when using player attributes; it is important that you familiarize yourself with them before you begin working with player attributes.

Only a single player may fill a role. For example, you cannot require three midfielders in a soccer game.

All roles must be filled before the game is considered ready to start. For example, you can't have a first-person shooter without a sniper (based on the preceding example).

Each player can fill only one role at a time; players cannot offer to join a game in a position that would fill more than one role. For example, you couldn't have a player in a first-person shooter willing to play either a sniper or a medic; they will need to pick one before the match request is finalized.

Player attributes are used during auto-matching. If you invite a friend into a game, they are not tested to see whether they match the role that needs to be filled. Instead, they will automatically be assigned a random, unassigned role. In short, friends do not get to pick their player attributes.

Roles are not displayed anywhere in the standard matchmaking graphical user interface. You will need to implement your own system prior to entering this view to allow users to select their roles.

The GKMatch object does not contain information about which players have been assigned which roles. You will need to implement your own system after the match is connected to determine who is playing which role.

There is no system in place to determine which roles are overfilled or which are harder to find matches for. For example, everyone might want to play a mage in a role-playing game and no one might want to be a healer; therefore, it would be much harder for a mage to find an open game, while a healer can easily find one.

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