Add Pop Up Message to the Game

#import "cocos2d.h"

@interface Scene4UILayer : CCLayer {

    CCLabelTTF *label;

}

- (BOOL)displayText:(NSString *)text

andOnCompleteCallTarget:(id)target selector:(SEL)selector;

@end

//////////////

#import "Scene4UILayer.h"

@implementation Scene4UILayer

- (id)init {   

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

        CGSize winSize = [CCDirector sharedDirector].winSize;

        label = [CCLabelTTF labelWithString:@"" fontName:@"Helvetica"

                                   fontSize:48.0];

        label.position = ccp(winSize.width/2, winSize.height/2);

        label.visible = NO;

        [self addChild:label];       

    }

    return self;   

}

- (BOOL)displayText:(NSString *)text

andOnCompleteCallTarget:(id)target selector:(SEL)selector {

    [label stopAllActions];

    [label setString:text];

    label.visible = YES;

    label.scale = 0.0;

    label.opacity = 255;

   

    CCScaleTo *scaleUp = [CCScaleTo actionWithDuration:0.5 scale:1.2];

    CCScaleTo *scaleBack =

    [CCScaleTo actionWithDuration:0.1 scale:1.0];

    CCDelayTime *delay = [CCDelayTime actionWithDuration:2.0];

    CCFadeOut *fade = [CCFadeOut actionWithDuration:0.5];

    CCHide *hide = [CCHide action];

    CCCallFuncN *onComplete =

    [CCCallFuncN actionWithTarget:target selector:selector];

    CCSequence *sequence = [CCSequence actions:scaleUp, scaleBack,

                            delay, fade, hide, onComplete, nil];

    [label runAction:sequence];   

    return TRUE;   

}

@end