我有一个来自CCNode的PlayerData类,我想在游戏的各个场景之间共享它作为静态单例实例。

我尝试了以下实现:

#import <Foundation/Foundation.h>
#import "cocos2d.h"
@interface PlayerData : CCNode {

}

@property (readwrite, nonatomic) int data;
+(id) playerData;
+(PlayerData*) sharedPlayerData;

#import "PlayerData.h"
@implementation PlayerData
@synthesize data;
static PlayerData* instanceOfPlayerData;

+(id) playerData
{
    if(instanceOfPlayerData==nil){
        return  [[self alloc] init];
    }else {
        return [self sharedPlayerData];
    }
}

+(PlayerData*) sharedPlayerData{
    NSAssert(instanceOfPlayerData != nil, @"PlayerData instance not yet initialized!");
    return instanceOfPlayerData;
}


-(id) init
{
    if ((self = [super init]))
    {
        instanceOfPlayerData=self;
        data=0;
        }
    return self;
}
@end

在哪里分配此资源? 我曾考虑过将其添加并访问到AppDelegate类中,但是我无法安静地了解如何进行操作。

我看到可以从sharedDirector访问一个滞后值,但我认为这不是正确的方法,除非必须将其强制转换为AppDelegate类。有什么建议吗?
[[CCDirector sharedDirector] delegate];

这是我的AppDelegate类,来自模板:
#import <UIKit/UIKit.h>
#import "cocos2d.h"

@interface AppController : NSObject <UIApplicationDelegate, CCDirectorDelegate>
{
    UIWindow *window_;
    UINavigationController *navController_;

    CCDirectorIOS   *__unsafe_unretained director_;                         // weak ref
}

@property (nonatomic) UIWindow *window;
@property (readonly) UINavigationController *navController;
@property (unsafe_unretained, readonly) CCDirectorIOS *director;

@end

PS:我使用启用了ARC的Cocos2d v2.x

最佳答案

这是我用于游戏的出色单例教程,并且效果很好:http://getsetgames.com/2009/08/30/the-objective-c-singleton/

08-05 21:36