iOS
發表時間：2020-10-19
發布人：葵宇科技
浏覽次數：37
在xcode的工程琅绫擎打開game center，
ok,就這麼簡單。如(rú)今就大年夜概講講PlayerModel的道理。因為我們在提交的時刻往往會因為統因而掉敗，特别在中(zhōng)國。所以，PlayerModel琅绫擎就提交了一個(gè)機制，如(rú)不雅提交掉敗，就把要提交的數據保存到本地文(wén)件，在合适的時刻再測驗測驗提交。
比來又一次用到game center琅绫擎的leader board。其拭魅這個(gè)工作很簡單，隻是很輕易忘記。所以駒萃Ｃ鸫下(xià)來。
iTunes Connect上創建app，然後啟用game center
創建app就省略了，等創建成功後，不須要提交。我們就可(kě)以設置game center了。
起首點擊新建的app，找到Game Center，如(rú)圖
[img]http://img.blog.csdn.net/20150106162538594?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemo1MTA=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
header file：
點擊進入具體的game center設置，可(kě)以添加一些項目。很是簡單，根本上都有提示，須要留意的是排行榜id，得搞個(gè)自力的，不要反複。這個(gè)id在代率攀琅绫擎須要應用。
就這麼簡單的搞幾下(xià)，game center就啟用了。
[img]http://img.blog.csdn.net/20150106162639590?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemo1MTA=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
在代碼中(zhōng)惹人game center
[img]http://img.blog.csdn.net/20150106162957820?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemo1MTA=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
膳绫擎這段代碼的意思就是app起來後，authenticationChanged被調用了，如(rú)不雅是登錄的狀況，那麼就會創建一個(gè)PlayerModel對象。如(rú)不雅有須要上傳的數據，那麼就攫取并且測驗測驗上傳。
直接打開就行，感到ios開辟越來越傻瓜了，呵呵。
接下(xià)來就是具體的代碼實現了。
代碼實現
起首在合适的處所添加如(rú)下(xià)代碼：平日是
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
double ver = [[UIDevice currentDevice].systemVersion doubleValue];
if (ver < 6.0) {
[[GKLocalPlayer localPlayer] authenticateWithCompletionHandler:^(NSError *error) {
}];
}
else
{
[[GKLocalPlayer localPlayer] setAuthenticateHandler:(^(UIViewController* viewcontroller, NSError *error) {
})];
}
NSNotificationCenter* ns = [NSNotificationCenter defaultCenter];
[ns addObserver:self selector:@selector(authenticationChanged) name:GKPlayerAuthenticationDidChangeNotificationName object:nil];
我們給game center增長了一個(gè)不雅察者，所以就須要在self琅绫擎供給一個(gè)函數。這是一個(gè)回調函數，如(rú)不雅用戶沒有登錄game center，那麼就會跑到下(xià)面，如(rú)不雅上岸了就會跑到膳绫擎。- (void) authenticationChanged
{
if ([GKLocalPlayer localPlayer].isAuthenticated) {
NSLog(@"authenticationChanged, authenticated");
}
else
{
NSLog(@"authenticationChanged, Not authenticated");
}
}接下(xià)來就是提交和(hé)顯示leader board了。具體的解釋蘋不雅的官網上說的很清跋扈。我這裡在網上找到一個(gè)封裝的源代碼，本身稍微修改了一下(xià)。具體代碼看最後面（附）。這裡重要介紹應用流程。先增長一個(gè)屬性。
@property (readwrite, retain) PlayerModel * player;再增長一個(gè)函數，如(rú)：
- (void) updatePlayer
{
if (!self.player || ![self.player.currentPlayerID isEqualToString:[GKLocalPlayer localPlayer].playerID]) {
[self.player release];
self.player = [[PlayerModel alloc] init];
}
[[self player] loadStoredScores];
}這個(gè)函數會在authenticationChanged琅绫擎被調到。
- (void) authenticationChanged
{
if ([GKLocalPlayer localPlayer].isAuthenticated) {
NSLog(@"authenticationChanged, authenticated");
[self updatePlayer];
}
else
{
NSLog(@"authenticationChanged, Not authenticated");
}
}updatePlayer這個(gè)函數比較關(guān)鍵。
它支撐多用戶，如(rú)不雅是第一次上岸game center，那麼就創建一個(gè)對象，如(rú)不雅是換了個(gè)用戶登錄，那麼就把之前鄧晔着，然後創建一個(gè)新的對象。然後調用loadStoredScore.
loadStoredScore會大年夜本地文(wén)件琅绫擎攫取須要傳送的分數，并且往game center辦事器(qì)傳。
其拭魅這是個(gè)保護辦法，後面會講到為什麼須要這麼做。
接下(xià)來就看看如(rú)不雅在遊戲中(zhōng)即時上傳數據。
起首增長一個(gè)函數，這個(gè)函數就是往辦事器(qì)發送數據。self.player submitScore，這個(gè)函數會在後面看到。有了這個(gè)函數，我們在遊戲或者應用的某個(gè)處所可(kě)聲調用往辦事器(qì)發送數據了。LEADERBOARD_DISTANCE的值就是膳绫擎connect琅绫擎創建的那個(gè)排行榜id。
- (void) storeScore:(NSNumber *)distance
{
if (!self.player)
return;
int64_t score64 = [distance longLongValue];
GKScore * submitScore = [[GKScore alloc] initWithCategory:LEADERBOARD_DISTANCE];
[submitScore setValue:score64];
[self.player submitScore:submitScore];
[submitScore release];
}- (void)submitScore:(GKScore *)score
{
if ([GKLocalPlayer localPlayer].authenticated) {
if (!score.value) {
// Unable to validate data.
return;
}
// Store the scores if there is an error.
[score reportScoreWithCompletionHandler:^(NSError *error){
if (!error || (![error code] && ![error domain])) {
// Score submitted correctly. Resubmit others
[self resubmitStoredScores];
} else {
// Store score for next authentication.
[self storeScore:score];
}
}];
}
}這個(gè)函數的重要意思就是，先測驗測驗提交數據，如(rú)不雅成功，那麼随便提交一下(xià)其他的數據（可(kě)能之前提交掉敗了）。如(rú)不雅掉敗，那麼就把數據保存下(xià)來[self storeScore: score]，保存到一個(gè)array，并且寫入本地文(wén)件。如(rú)許就有機會在其他處所再提交一次。完全代碼看後面。
如(rú)今就看看如(rú)不雅在app琅绫擎顯示leader board。看下(xià)面的代碼gameCenterAuthenticationComplete是我内部應用的一個(gè)bool，用來标記用戶是否登錄了game center。調用一下(xià)這個(gè)代碼，就會顯示iOS的game center。
- (void) showGameCenter
{
if (gameCenterAuthenticationComplete) {
GKLeaderboardViewController * leaderboardViewController = [[GKLeaderboardViewController alloc] init];
[leaderboardViewController setCategory:LEADERBOARD_DISTANCE];
[leaderboardViewController setLeaderboardDelegate:_viewController];
[self.viewController presentModalViewController:leaderboardViewController animated:YES];
[leaderboardViewController release];
}
}
附，完全PlayerModle代碼：
#import <Foundation/Foundation.h>
#import <GameKit/GameKit.h>
@interface PlayerModel : NSObject {
NSLock *writeLock;
}
@property (readonly, nonatomic) NSString* currentPlayerID;
@property (readonly, nonatomic) NSString *storedScoresFilename;
@property (readonly, nonatomic) NSMutableArray * storedScores;
// Store score for submission at a later time.
- (void)storeScore:(GKScore *)score ;
// Submit stored scores and remove from stored scores array.
- (void)resubmitStoredScores;
// Save store on disk.
- (void)writeStoredScore;
// Load stored scores from disk.
- (void)loadStoredScores;
// Try to submit score, store on failure.
- (void)submitScore:(GKScore *)score ;
@end
m file：
#import "PlayerModel.h"
@implementation PlayerModel
@synthesize storedScores,
currentPlayerID,
storedScoresFilename;
- (id)init
{
self = [super init];
if (self) {
currentPlayerID = [[NSString stringWithFormat:@"%@", [GKLocalPlayer localPlayer].playerID] retain];
NSString* path = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
storedScoresFilename = [[NSString alloc] initWithFormat:@"%@/%@.storedScores.plist",path, currentPlayerID];
writeLock = [[NSLock alloc] init];
}
return self;
}
- (void)dealloc
{
[storedScores release];
[writeLock release];
[storedScoresFilename release];
[currentPlayerID release];
[super dealloc];
}
// Attempt to resubmit the scores.
- (void)resubmitStoredScores
{
if (storedScores) {
// Keeping an index prevents new entries to be added when the network is down
int index = (int)[storedScores count] - 1;
while( index >= 0 ) {
GKScore * score = [storedScores objectAtIndex:index];
[self submitScore:score];
[storedScores removeObjectAtIndex:index];
index--;
}
[self writeStoredScore];
}
}
// Load stored scores from disk.
- (void)loadStoredScores
{
NSArray * unarchivedObj = [NSKeyedUnarchiver unarchiveObjectWithFile:storedScoresFilename];
if (unarchivedObj) {
storedScores = [[NSMutableArray alloc] initWithArray:unarchivedObj];
[self resubmitStoredScores];
} else {
storedScores = [[NSMutableArray alloc] init];
}
}
// Save stored scores to file.
- (void)writeStoredScore
{
[writeLock lock];
NSData * archivedScore = [NSKeyedArchiver archivedDataWithRootObject:storedScores];
NSError * error;
[archivedScore writeToFile:storedScoresFilename options:NSDataWritingFileProtectionNone error:&error];
if (error) {
// Error saving file, handle accordingly
}
[writeLock unlock];
}
// Store score for submission at a later time.
- (void)storeScore:(GKScore *)score
{
[storedScores addObject:score];
[self writeStoredScore];
}
// Attempt to submit a score. On an error store it for a later time.
- (void)submitScore:(GKScore *)score
{
if ([GKLocalPlayer localPlayer].authenticated) {
if (!score.value) {
// Unable to validate data.
return;
}
// Store the scores if there is an error.
[score reportScoreWithCompletionHandler:^(NSError *error){
if (!error || (![error code] && ![error domain])) {
// Score submitted correctly. Resubmit others
[self resubmitStoredScores];
} else {
// Store score for next authentication.
[self storeScore:score];
}
}];
}
}
@end
