cocos 2d CCSprite 触摸识别 非常有用！！！！！

    cocos 2d 中的CCSprite 无法识别触摸操作，需要自定义类。

    解决思想：找到触摸发生的那个点，判断其是否在sprite的矩形区域内

    完整代码如下：

//MySprite.h文件
#import "CCSprite.h"
#import "cocos2d.h"

//自定义类继承与CCSprite，实现CCTouchOneByDelegate协议
@interface MySprite : CCSprite<CCTouchOneByOneDelegate>
@property (nonatomic,copy) NSString* spriteName;
//定义精灵名属性
-(id)initWithName:(NSString*)spriteNameT;
@end


//MySprite.m文件
#import "MySprite.h"

@implementation MySprite
@synthesize spriteName;

-(id)initWithName:(NSString *)spriteNameT
{
    if (self = [super init]) {
        spriteName = spriteNameT;
    }
    return self;
}

-(void)onEnter
{
    //注册触摸控制
    [[[CCDirector sharedDirector] touchDispatcher] addTargetedDelegate:self priority:0 swallowsTouches:YES];
    [super onEnter];
}

-(void)onExit
{
    //取消触摸控制
    [[[CCDirector sharedDirector] touchDispatcher] removeDelegate:self];
    [super onExit];
}


//get the rect of current sprite
-(CGRect)spriteRect
{
    //计算精灵的矩形区域并返回
    return CGRectMake( _position.x - _contentSize.width*_anchorPoint.x,
                      _position.y - _contentSize.height*_anchorPoint.y,
                      _contentSize.width, _contentSize.height);
}
//判断触摸点是否在精灵矩形区域内
-(BOOL)isContainsTouchPoint:(UITouch*)touchT
{
    CCLOG(@"sprite touch event ______________________________________________");
    CGRect spriteRect = [self spriteRect];
    spriteRect.origin = CGPointZero;
    CGPoint touchPointInView = [touchT locationInView:[touchT view]];
    NSLog(@"touch point in touch view is : %f,%f",touchPointInView.x,touchPointInView.y);
    //转换为GL坐标系
    touchPointInView = [[CCDirector sharedDirector] convertToGL:touchPointInView];
    CGPoint touchPoint = [self convertToNodeSpace:touchPointInView];
    BOOL isTouched = CGRectContainsPoint(spriteRect, touchPoint);
    NSLog(@"%@",isTouched? @"YES" : @"NO");
    if (isTouched) {
        //
        CCLOG(@"sprite is touched here");
    }else{
        NSLog(@"sprite is not touched here");
    }
    
    return isTouched;
}

//实现触摸协议
#pragma mark touch one by one delegate
-(BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event
{
    return [self isContainsTouchPoint:touch];
}
-(void)ccTouchEnded:(UITouch *)touch withEvent:(UIEvent *)event
{
    NSLog(@"sprite name is %@",spriteName);
}
@end

这个精灵是可以背捕捉到的。