我的CCTargetedAction兩次運行動作

Question

在cocos2d v3中，找不到類似CCTargetedAction的內容。 它在我的項目中是必需的，所以我從cocos2d v2複製了代碼。

@interface CCTargetedAction : CCActionInterval 

/** This is the target that the action will be forced to run with */ 
@property(readwrite,nonatomic,retain) id forcedTarget; 
@property(readwrite,nonatomic,retain) CCActionFiniteTime* action; 

/** Create an action with the specified action and forced target */ 
+(id)actionWithTarget:(id)target 
       action:(CCActionFiniteTime*)action; 

/** Init an action with the specified action and forced target */ 
-(id)initWithTarget:(id)target 
      action:(CCActionFiniteTime*)action; 
@end 
@implementation CCTargetedAction 

+(id)actionWithTarget:(id)target 
       action:(CCActionFiniteTime*)action 
{ 
    return [(CCTargetedAction*)[self alloc] initWithTarget:target 
                action:action]; 
} 
-(id)initWithTarget:(id)target 
      action:(CCActionFiniteTime*)action 
{ 
    self = [super initWithDuration:action.duration]; 
    if(self) 
    { 
     self.forcedTarget = target; 
     self.action = action; 
    } 
    return self; 
} 

-(id)copyWithZone:(NSZone*)zone 
{ 
    CCAction *copy = [(CCTargetedAction*) [[self class] allocWithZone: zone] 
         initWithTarget:_forcedTarget 
         action:[_action copy]]; 
    return copy; 
} 

- (void) startWithTarget:(id)aTarget 
{ 
    [super startWithTarget:aTarget]; 
    [_action startWithTarget:_forcedTarget]; 
} 

- (void) stop 
{ 
    [_action stop]; 
} 

- (void) update:(CCTime) time 
{ 
    [_action update:time]; 
} 
@end 

但是我的CCTargetedAction運行兩次。

-(void) touchBegan:(UITouch *)touch withEvent:(UIEvent *)event { 
    CCActionCallBlock* block = [CCActionCallBlock actionWithBlock:^{ 
     CCLOG(@"call block"); 
    }]; 
    CCTargetedAction* action = [CCTargetedAction actionWithTarget:self 
                  action:block]; 
    [self runAction:action]; 
} 

如果我觸摸屏幕一次，則會輸出兩次日誌消息。

2014-04-07 22:09:57.439 TargetedActionTest[3924:60b] call block 
2014-04-07 22:09:57.455 TargetedActionTest[3924:60b] call block 

爲什麼這段代碼運行兩次？

謝謝。

Answer 1

這個問題是通過覆蓋 - （BOOL）isDone方法來解決的。

-(BOOL)isDone 
{ 
    return [_action isDone]; 
} 

我指的是這篇文章。 http://cocos2d-x.org/forums/6/topics/39546