Question

Once again I need your Help, am thanking you as every time you helped me.

I am developing Game in iPhone using ‘COCOS2D’ framework and ‘OBJECTIVE-C’. In my game there is Ten(10) Levels. The LEVEL Label is created and defined in a class ( i:e HudLayer.h, HudLayer.m ) and I am removing LABEL in another class (i:e GameScene.m ), In the game I am using ccLabelBMFont for creating LEVEL label.

Now the Problem is when I am Removing LEVEL label (i:e Level 1) and placing new LEVEL label (i:e Level 2), the code is not removing “Level 1” and placing “Level 2” on the previous LEVEL label (i:e Level 1 ).

Below is my Code for the above same issue, please tell where I am going Wrong :

**Code of HudLayer.h**

#import "Foundation/Foundation.h"
#import "cocos2d.h"
#import "GameScene.h"

@interface HudLayer : CCLayer { 
    CCLabelBMFont * level;
}

@property (nonatomic,retain) CCLabelBMFont * level;
@end

Now code for “HudLayer.m” where I am synthethising and using ‘level’:

#import "HudLayer.h" 
      #import "GameScene.h"

    @implementation HudLayer 

    @synthesize level;
       level = [CCLabelTTF labelWithString:[NSString stringWithFormat:@"Level 1",level] fontName:@"Marker Felt" fontSize:12];
       [level setAnchorPoint:ccp(1,0.5)];
       [level setPosition:ccp(250,470)]; 
       [level setColor:ccORANGE]; 
       [self addChild:level];
     }
     return self;
     }
     - (void) dealloc {
       [super dealloc];
       [lives release];
     } 

    @end

*HERE IS MY CODE FOR "GameScene.h"*

#import "cocos2d.h"
#import "HudLayer.h"
typedef enum {
    Level1, 
    Level2,
    Level3,
    Level4,
    Level5, 
    Level6,
    Level7, 
    Level8,
    Level9, 
    Level10,
} LevelType;

@interface GameLayer : CCLayer
{
int level;
BOOL ifLevel2Started;
    BOOL ifLevel3Started;
    BOOL ifLevel4Started;
    BOOL ifLevel5Started;
    BOOL ifLevel6Started;
    BOOL ifLevel7Started;
    BOOL ifLevel8Started;
    BOOL ifLevel9Started;
    BOOL ifLevel10Started;
}
@property (assign,readwrite) int level;
@end

AND FINALLY I WANT TO REMOVE THE LEVEL label 1 From HudLayer Class and palce new Label with Name “Level 2” on the basis of Score points:

        #import "GameScene.h"
        #import "HudLayer.h"
        @implementation GameLayer
        @synthesize level;

        @synthesize levelType = _levelType;
        if (self.levelType ==  Level1) {
                [self LevelFeatures];
                ifLevel2Started = FALSE;
            }

            if (self.levelType ==  Level2) {
                [self LevelFeatures1];
                ifLevel3Started = FALSE;
            }

            if (self.levelType ==  Level3) {
                [self LevelFeatures2];
                ifLevel4Started = FALSE;
            }

    -(void)LevelFeatures
    {
        HudLayer * hl = (HudLayer *)[self getChildByTag:KHudLayer]; // * HERE I AM DOING MY MAIN STEP, HERE AM CREATING OBJECT OF **"HudLayer" class** *

        hl.level = [CCLabelTTF labelWithString:[NSString stringWithFormat:@"Level 2"]  fontName:@"Marker Felt" fontSize:12];
//**HERE AM SETTING NEW Label FOR LEVEL.**
}

I AM FINDING PROBLEM ONLY ON THE ABOVE LINE OF CODE FOR WHICH I WROTE SO BIG QUERY, SO THAT YOU CAN UNDERSTAND MY PROBLEM EXACTLY.

WHAT I SHOULD WRITE/CODE OVER HERE SO THAT PREVIOUS LABEL COMPLETELY REMOVE AND NEW ONE PLACE OVER IT. (i:e No Overloading of Label happen).

---

Answer 1

hmmm , there is a chunk of code missing at the start of your implementation snippet, but I would venture this (with minimal change to your current setup) :

 -(void)LevelFeatures {
     HudLayer * hl = (HudLayer *)[self getChildByTag:KHudLayer];
     [hl removeChild:h1.level cleanup:YES];
     hl.level=[CCLabelTTF labelWithString:[NSString stringWithFormat:@"Level 2"] 
                                 fontName:@"Marker Felt" 
                                 fontSize:12];
     [hl addChild:hl.level];
}

I am not certain why you are retaining level in HudLayer, but just adding as a child to any CCNode descendant will retain it for you. Also, with this kind of code i tend to use tags to regain access to children I add to a CCNode descendant.