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我正在为 iPhone 制作一款 RPG 游戏,一切都很顺利,但我需要知道如何保存我的游戏关卡,这样即使用户关闭在后台运行的应用程序,整个游戏也不会重新开始. 我什至在考虑带回老式游戏并制作它,以便您必须输入密码才能从上次中断的地方开始。但即便如此,我也不知道如何正确保存游戏。另外,即使我确实保存了游戏,即使应用程序完全关闭,我如何才能让它保持保存状态?到目前为止,我已经尝试将保存数据代码添加到该AppWillTerminate行但仍然没有。任何帮助表示赞赏。

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2 回答 2

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我不确定您是否要保存用户所在的级别,或者您是否要保存游戏状态。如果您只是想保存用户所在的级别,您应该使用@EricS 的方法(NSUserDefaults)。保存游戏状态稍微复杂一些。我会做这样的事情:

//Writing game state to file
    //Some sample data
    int lives = player.kLives;
    int enemiesKilled = player.kEnemiesKilled;
    int ammo = player.currentAmmo;

    //Storing the sample data in an array
    NSArray *gameState = [[NSArray alloc] initWithObjects: [NSNumber numberWithInt:lives], [NSNumber numberWithInt:enemiesKilled], [NSNumber numberWithInt:ammo], nil]; 

    //Writing the array to a .plist file located at "path"
    if([gameState writeToFile:path atomically:YES]) {
        NSLog(@"Success!");
    }

//Reading from file
    //Reads the array stored in a .plist located at "path"
    NSArray *lastGameState = [NSArray arrayWithContentsOfFile:path];

.plist 看起来像这样:

在此处输入图像描述

使用数组意味着在重新加载游戏状态时,您必须知道存储项目的顺序,这还不错,但是如果您想要更可靠的方法,您可以尝试使用 NSDictionary 像这样:

//Writing game state to file
    //Some sample data
    int lives = player.kLives;
    int enemiesKilled = player.kEnemiesKilled;
    int ammo = player.currentAmmo;
    int points = player.currentPoints;

    //Store the sample data objects in an array
    NSArray *gameStateObjects = [NSArray arrayWithObjects:[NSNumber numberWithInt:lives], [NSNumber numberWithInt:enemiesKilled], [NSNumber numberWithInt:points], [NSNumber numberWithInt:ammo], nil];

    //Store their keys in a separate array      
    NSArray *gameStateKeys = [NSArray arrayWithObjects:@"lives", @"enemiesKilled", @"points", @"ammo", nil];

    //Storing the objects and keys in a dictionary
    NSDictionary *gameStateDict = [NSDictionary dictionaryWithObjects:gameStateObjects forKeys:gameStateKeys];

    //Write to file
    [gameStateDict writeToFile:path atomically: YES];

//Reading from file
    //Reads the array stored in a .plist located at "path"
    NSDictionary *lastGameState = [NSDictionary dictionaryWithContentsOfFile:path];

字典 .plist 看起来像这样:

在此处输入图像描述

于 2012-08-23T06:07:23.710 回答
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要保存关卡:

[[NSUserDefaults standardUserDefaults] setInteger:5 forKey:@"level"];

要读取级别:

NSInteger level = [[NSUserDefaults standardUserDefaults] integerForKey:@"level"];

每当用户进入该级别时,我都会设置它。您可以等到您被发送到后台,但等待真的没有意义。

于 2012-08-23T03:42:19.160 回答