cocos2d游戏暂停页面的实现

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

@interface PauseLayerProtocol: CCNode

-(void)pauseLayerDidPause;
-(void)pauseLayerDidUnpause;

@end

@interface PauseLayer : CCLayerColor
{
    PauseLayerProtocol * delegate;
}

@property (nonatomic,assign)PauseLayerProtocol * delegate;

+ (id) layerWithColor:(ccColor4B)color delegate:(PauseLayerProtocol *)_delegate ;
- (id) initWithColor:(ccColor4B)c delegate:(PauseLayerProtocol *)_delegate;
-(void)pauseDelegate;

@end

#import "PauseLayer.h"

@implementation PauseLayer
@synthesize delegate;

+ (id) layerWithColor:(ccColor4B)color delegate:(id)_delegate 
{
    return [[[self alloc] initWithColor:color delegate:_delegate] autorelease];
}

- (id) initWithColor:(ccColor4B)c delegate:(id)_delegate 
{
    self = [super initWithColor:c];
    CGSize wins = [[CCDirector sharedDirector] winSize];
    delegate = _delegate;
    [self pauseDelegate];
    if (self != nil)
    {
        CCSprite * background = [CCSprite spriteWithSpriteFrameName:@"background.png"];
        [self addChild:background];
        
        CCSprite *backBtn = [CCSprite spriteWithSpriteFrameName:@"back.png"];
        CCSprite *resumeGameBtn = [CCSprite spriteWithSpriteFrameName:@"newBegin.png"];
        CCMenuItemImage *back = [CCMenuItemImage itemFromNormalSprite:backBtn 
                                                       selectedSprite:nil                                                               
                                                               target:self
                                                             selector:@selector(goBack:)];
        CCMenuItemImage *resumeGame = [CCMenuItemImage itemFromNormalSprite:resumeGameBtn  
                                                             selectedSprite:nil 
                                                                     target:self 
                                                                   selector:@selector(resumeGame:)];
        CCMenu * menu = [CCMenu menuWithItems:back, resumeGame, nil];
        [menu setPosition:ccp(0,0)];
        
        [back setPosition:ccp([background boundingBox].size.width/2,[background boundingBox].size.height * 0.75)];
        [resumeGame setPosition:ccp(back.position.x , back.position.y - 40)];
        
        [background addChild:menu];            
        [background setPosition:ccp(wins.width * 0.5, wins.height * 0.5)];
    }
    return self;
}

-(void)pauseDelegate
{
    if([delegate respondsToSelector:@selector(pauseLayerDidPause)])
        [delegate pauseLayerDidPause];
    [delegate onExit];
    [delegate.parent addChild:self z:10];
}

-(void)goBack: (id)sender
{
    [delegate onEnter];
    if([delegate respondsToSelector:@selector(pauseLayerDidUnpause)])
        [delegate pauseLayerDidUnpause];
    [self.parent removeChild:self cleanup:YES];
}

-(void) resumeGame: (id)sender
{
    [self performSelector:@selector(goBack:)];
    
    GameScene *gameScene = [GameScene sharedGameScene];
    [gameScene removeAllChildrenWithCleanup:YES];
    [gameScene resetGame];
}

-(void)dealloc
{
    [super dealloc];
}

@end　　　　

游戏界面的调用

-(void) doPause

{

    [GameCoversetIsGameCoverPressed:NO];

    ccColor4B c = {0,0,0,150};

    [PauseLayerlayerWithColor:c delegate:(PauseLayerProtocol *)];

}