Objective c cocos2d的HUD教程

我已经试着遵循这个教程(http://www.raywenderlich.com/4666/how-to-create-a-hud-layer-with-cocos2d)然而，正如你可能知道的那样，我并没有使用与他们相同的教程，而是使用几乎相同的设置。我相信我已经一步一步地跟着它走了。但是我得到了错误（箭头所示的位置：gameLayer.h:（我取出了大部分不必要的东西）

然后在

init

中

//HUD Layer setup

        HudLayer = [[[CCLayer alloc] init] autorelease];
        [self addChild:HudLayer];
             //add stuff in the HUD here...


        CCMenuItem *Mainmenu = [[[CCMenuItemFont itemWithString:@"Main Menu" target:self selector:@selector(MainMenu:)] retain]autorelease];

        Mainmenu.position = ccp(size.width /2-Mainmenu.rect.size.width,size.height /2-Mainmenu.rect.size.height);
        CCMenu *Hudmenu = [CCMenu menuWithItems: Mainmenu, nil];
        [HudLayer addChild:Hudmenu];
    //End HUD Layer setup

---

然后我得到两个Apple Mach-O链接器错误…架构i386的未定义符号：“\u OBJC\u CLASS\u$\ u gameDataParser”，引用自settingsMenu中的：OBJC CLASS ref。O ld:symbol未找到架构i386 clang:error:linker命令失败，退出代码为1（使用-v查看调用）最奇怪的是，xCode是一种将at识别为类的方法，因为它将其涂成蓝色，但一旦我编译它就会抛出这些错误：/嗯，我不太清楚为什么你不把

\u设置成一个CCLayer。我的意思是如果它是HUD类型的设置。因为这是教程所说的；）我不是cocos2d方面的专家。。。然而，我的船在这里。但让我来告诉你我是如何实现我的HUD的。
//  mainMenu.m

#import "mainMenu.h"  
#import "gameData.h"
#import "gameDataParser.h"
#import "SimpleAudioEngine.h"
#import "settingsMenu.h"

@implementation mainMenu

@synthesize iPad;

+ (id)scene {
    CCScene *scene = [CCScene node];
    settingsMenu *settings = [settingsMenu node];
    [scene addChild:settings z:1];
     mainMenu *menuLayer = [[[mainMenu alloc] initWithsettingsMenu:settings] autorelease];
     [scene addChild:menuLayer];

    return scene;
}

//  settingsMenu.h

#import <Foundation/Foundation.h>
#import "cocos2d.h"
#import "Constants.h"
#import "SceneManager.h"

@interface settingsMenu: CCLayer {
    CCMenuItem *_musicOn;
    CCMenuItem *_musicOff;
    CCMenuItem *_invertControlsOn;
    CCMenuItem *_invertControlsOff;
}

@property (nonatomic, assign) BOOL iPad;
@property (nonatomic, assign) BOOL settings;

@end

//  settingsMenu.m


#import "settingsMenu.h"
#import "gameData.h"
#import "gameDataParser.h"
#import "SimpleAudioEngine.h"
#import "mainMenu.h"


@implementation settingsMenu

- (id)init{
    if( (self=[super init])) {

        // Determine Screen Size
        CGSize screenSize = [CCDirector sharedDirector].winSize;

        self.iPad = UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad;

        if (self.iPad){
            CCSprite *background = [CCSprite spriteWithFile:@"settingsiPad.png"];
            background.position = ccp(screenSize.width/2, screenSize.height/2);
            [self addChild:background];
        }

        else if (screenSize.height > 490){
            CCSprite *background = [CCSprite spriteWithFile:@"settingsiPhoneFive.png"];
            background.position = ccp(screenSize.width/2, screenSize.height/2);
            [self addChild:background];
        }

        else{
             CCSprite *background = [CCSprite spriteWithFile:@"settingsiPhone.png"];
             background.position = ccp(screenSize.width/2, screenSize.height/2);
            [self addChild:background];
        }
     [self addButtons];

    }
    return self;
}

//  GameLayer.h

#import <Foundation/Foundation.h>
#import "cocos2d.h"

@interface GameLayer : CCLayer {
    CCLayer *HudLayer;
}
@property (nonatomic, retain) CCLayer *HudLayer;

+(id)scene;
@end

@synthesize HudLayer;

//HUD Layer setup

        HudLayer = [[[CCLayer alloc] init] autorelease];
        [self addChild:HudLayer];
             //add stuff in the HUD here...


        CCMenuItem *Mainmenu = [[[CCMenuItemFont itemWithString:@"Main Menu" target:self selector:@selector(MainMenu:)] retain]autorelease];

        Mainmenu.position = ccp(size.width /2-Mainmenu.rect.size.width,size.height /2-Mainmenu.rect.size.height);
        CCMenu *Hudmenu = [CCMenu menuWithItems: Mainmenu, nil];
        [HudLayer addChild:Hudmenu];
    //End HUD Layer setup