限定只有某CCLayer 觸發 touch

網路上片斷 +試驗
原理還沒詳細研究~先記錄囉~

//================================================================
-(void) registerWithTouchDispatcher
{
[[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:INT_MIN+1 swallowsTouches:YES];
}
- (BOOL)ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event
{

return YES;
}