Sprite套件延遲runAction完成？

Question

我正在用Sprite Kit構建一個實現A * Pathfinding的遊戲。我正在使用角色用來計算路徑的網格系統（塊），它的效果很好。我的問題是動畫。

我正在使用一個NSMutableArray來保存步驟，並在每次移動完成（runAction完成）時移除一個步驟。它的作品，但動畫完成之間凍結一微秒和新的舉動使它看起來「波濤洶涌」，它不是一個平穩的舉動...

我試了很多東西，唯一的作品是將持續時間改爲大約1.5秒來移動32px（它將成爲一個sloooooooow遊戲;））。當我想要我需要的時間（0.7）時，問題就在那裏。

我真的希望有人能幫助我。

下面是一些代碼：

-(void)animateChar { 

    self.currentStepAction = nil; 

    if (self.pendingMove != nil) { 
     tileMap *moveTarget = pendingMove; 
     self.pendingMove = nil; 
     self.shortestPath = nil; 
     [self moveToward:moveTarget]; 
     return; 
    } 

    if (self.shortestPath == nil) { 
     return; 
    } 


    // WE HAVE REACHED OUR BLOCK! CHECK IF ITS CLICKED OR STROLLING 
    if ([self.shortestPath count] == 0) { 

     self.shortestPath = nil; 
     self.moving = FALSE; 
     self.strolling = FALSE; 

     if (self.minionBlock) { 
      CGPoint diff = ccpSub(self.minionBlock.position, self.parentBlock.position); 
      if (abs(diff.x) > abs(diff.y)) { 
       if (diff.x > 0) { [self runAnimation:_faceRight speed:0.3]; } else { [self runAnimation:_faceLeft speed:0.3]; } 
      } else { 
       if (diff.y > 0) { [self runAnimation:_faceUp speed:0.3]; } else { [self runAnimation:_faceDown speed:0.3]; } 
      } 

      // SET TIMER FOR REMOVING THE BLOCK. EVERY 0.5 SECONDS IT REMOVES X ENDURANCE. 
      self.blockTimer = [NSTimer scheduledTimerWithTimeInterval:0.5 target:self selector:@selector(pickBlock) userInfo:nil repeats:YES]; 

     } else { 

      [self setMinionBusy:FALSE]; 
      [self runAnimation:_waiting speed:0.3]; 
      [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(selectRandBlockAndMove) userInfo:nil repeats:NO]; 
     } 

     return; 
    } 

    ShortestPathStep *s = [self.shortestPath objectAtIndex:0]; 

    // CHECK HOLE ON NEXT DOWN 
    tileMap *checkHole = [s.theBlock getNeighbor:1]; 

    if ([checkHole isBlockType] == 2) { // THERE IS A HOLE, WE CANT REACH! 

     if ([_scene getRecentBlock] == self.minionBlock) { [_scene controlHud:1]; } 

     [self removeBlockBar]; 
     [self.minionBlock setOccupied:FALSE]; 
     self.minionBlock = nil; 
     self.currentStepAction = nil; 
     self.pendingMove = nil; 
     self.shortestPath = nil; 
     [self runAnimation:_waiting speed:0.3]; 
     [self addBubble:1]; 

     if (!self.stuck) { 
      [NSTimer scheduledTimerWithTimeInterval:3 target:self selector:@selector(selectRandBlockAndMove) userInfo:nil repeats:NO]; 
     } 

     return; 
    } 

    CGPoint futurePosition = s.theBlock.position; 
    CGPoint currentPosition = self.parentBlock.position; 
    CGPoint diff = ccpSub(futurePosition, currentPosition); 

    if (abs(diff.x) > abs(diff.y)) { 
     if (diff.x > 0) { [self runAnimation:_faceRight speed:0.2]; } else { [self runAnimation:_faceLeft speed:0.2]; } 
    } else { 
     if (diff.y > 0) { [self runAnimation:_faceUp speed:0.2]; } else { [self runAnimation:_faceUp speed:0.2]; } 
    } 

    self.parentBlock = s.theBlock; 

    currentStepAction = [SKAction moveTo:s.theBlock.position duration:1.2]; 

    [self runAction:currentStepAction completion:^{ 
     [self animateChar]; 
    }]; 

    [self.shortestPath removeObjectAtIndex:0]; 
} 

Answer 1

你可以嘗試爲動畫序列執​​行完成：

[self runAction:[SKAction sequence:@[currentStepAction, 
            [SKAction runBlock:^{ [self animateChar]; }] 
            ]]]; 

而且這會不會致電animateChar當SKAction而動畫被中止。