cocos2d-iphone – 使用cocos2d游戏的状态设计模式

示例：说MyGame用于存储所有游戏统计信息.
//在MyGame.h中

typedef enum
{
    kGameMode_Practice = 1001,kGameMode_Stress,kGameMode_TimeBattle,}GameMode;



@interface MyGame: NSObject
{
    GameMode  mGameMode;
    int       mHighScore;
} 
@property(nonatomic,assign) GameMode  gameMode;

@property(nonatomic,assign)int highScore;

+(MyGame*)sharedGameObject;

//在MyGame.mm中

static MyGame *gGame = nil;

  @implementation MyGame
  @synthesize gameMode=mGameMode;
  @synthesize highScore=mHighScore;

 +(MyGame*)sharedGameObject
 {
    if(!gGame)
    {
        gGame = [[MyGame alloc] init];
    }
    return gGame;
 }

 -(void)saveData //Call this from applicationWillResignActive
 {
         NSUserDefaults *userDafs = [NSUserDefaults standardUserDefaults];
         [userDafs setInteger:self.highScore forKey:@"highScore"];
         [userDafs setInteger:self.gameMode forKey:@"gameMode"];

         [[NSUserDefaults standardUserDefaults] synchronize];
 }

 -(void)loadData //call this from UIApplication didFinishLaunchingWithOptions 
 { 
     NSUserDefaults *userDafs = [NSUserDefaults standardUserDefaults];
     self.highScore = [userDafs integerForKey:@"highScore"]
     self.gameMode = (GameMode)[userDafs integerForKey:@"gameMode"]

 }

//您可以在选择菜单按钮时设置游戏模式

[MyGame sharedGameObject].gameMode = kGameMode_Practice

//检查游戏中的任何地方

if([MyGame sharedGameObject].gameMode == kGameMode_Practice)

同时在应用终止时保存这些值,并在应用启动时加载相同值.

[[MyGame sharedGameObject] saveData];

根据游戏模式,您可以更改游戏.使用单一通用类进行游戏玩法逻辑并检查游戏模式并进行调整..当你为3个类设计3个单独的类时,将来需要在所有文件中更新一个更好的…所以尽可能多地使用通用代码.