Question

我是iOS开发和开发数学游戏的新手，其中我有3个级别Easy，Normal和Hard。我想以编程方式为每个级别保存高分，但不知道如何？

[[NSUserDefaults standardUserDefaults]integerForKey:@"highScore"]<[SingletonClass sharedSingleton].Score){

[[NSUserDefaults standardUserDefaults] setInteger:[SingletonClass sharedSingleton].Score forKey:@"highScore"];

[[NSUserDefaults standardUserDefaults]synchronize];

我正在使用此代码来保存高分。但是这段代码为每个级别保存了相同的高分。

Answer 1

您可以使用三个单独的密钥来存储highScore - MGHighScoreEasy，MGHighScoreNormal和MGHighScoreHard，

if(gameMode == MGGameModeEasy) {

  [[NSUserDefaults standardUserDefaults] setInteger:[SingletonClass sharedSingleton].Score forKey:@"MGHighScoreEasy"];
  [[NSUserDefaults standardUserDefaults] synchronize];
} else if (....) {

}

Answer 2

这是一个关于如何构建代码/数据的问题，而不是保存它的方式。鉴于高分是我想要的玩家的属性和你的用户类的NSDictionary属性（猜测那些可以存储所有高分的东西）。

例如：

NSArray *keys = [NSArray arrayWithObjects:@"easy", @"medium", @"hard", nil];
NSArray *objects = [NSArray arrayWithObjects:@"value1", @"value2", @"value3", nil]; 
NSDictionary *dictionary = [NSDictionary dictionaryWithObjects:objects 
                                                   forKeys:keys];

现在您可以将此NSDictionary存储在NSUserDefaults中，当您检索它时，您将获得所有分数。

例如：

[[NSUserDefaults standardUserDefaults] setObject:dictionary forKey:@"highScores"];
[[NSUserDefaults standardUserDefaults] synchronize];

Answer 3

有两种方法可以将游戏分数存储到创建Database并将记分卡数组存储到NSUserDefault。

将记分卡数组存储在NSUserDefault。

[[NSUserDefaults standardUserDefaults] setValue:arrayHighScore  forKey:@"highScore"];
[[NSUserDefaults standardUserDefaults] setValue:arrayMiddiumScore  forKey:@"MediaumScore"];
[[NSUserDefaults standardUserDefaults] setValue:arrayEasyScore  forKey:@"EasyScore"];
[[NSUserDefaults standardUserDefaults]synchronize];

Answer 4

使用NSUserDefaults来保存分数会让你的游戏很容易被破解。

您可以使用NSKeyedArchiver将数据保存到文件

-(void)saveState {


    NSLog(@"Saving state");

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString *documentsDirectory = [paths objectAtIndex:0];
    NSString *statePath = [documentsDirectory stringByAppendingPathComponent:someFileName];

    NSMutableData *appData;
    NSKeyedArchiver *encoder;
    appData = [NSMutableData data];
    encoder = [[NSKeyedArchiver alloc] initForWritingWithMutableData:appData];
     // SaveData using [encoder encodeObject:(id)object forkey(NSString *)key]
    [encoder encodeObject:someUserObject forKey:@"someUserKey"];
    [encoder encodeInteger:someUserscore forKey:@"someUserScoreKey"];


    // Finish encoding and write the contents of gameData to file
    [encoder finishEncoding];
    [appData writeToFile:statePath atomically:YES];


}

然后你可以用这样的文件加载数据

-(void)loadState
{
    NSLog(@"Loading state");

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    NSString  *documentsDirectory = [paths objectAtIndex:0];
    NSString *statePath = [documentsDirectory stringByAppendingPathComponent:someFileName];

    NSData *appData;
    NSKeyedUnarchiver *decoder;

    appData = [NSData dataWithContentsOfFile:statePath];
    if (appData)
    {
        NSLog (@"file Loaded");
        decoder = [[NSKeyedUnarchiver alloc] initForReadingWithData:appData];
        // set data here using [decoder decodeObject for key...
        someUserObject = [decoder decodeIntegerForKey:@"someUserKey"];
        someUserScore = [decoder decodeObjectForKey:@"someUserScoreKey"];

    }
    else
    {
        NSLog(@"No saved data available or incorrect file name");
    }

}

您编码/解码的任何自定义类都需要确保它们符合NSCoding。

为ios中的每个级别的游戏保存高分

4 个答案: