重新加载 SKScene 后 SKAction 不是运行

Question

我正在使用 iOS SpriteKit 构建游戏。我有一个常规的 UIViewController "Chooser" 可以进入第二个 VC 来加载 SKScene。 SKScene 加载 SKSprites 并通过 SKAction 在屏幕上移动它们。当我运行第一轮时效果很好。

完成一场比赛后，我们 return 到 Chooser 准备下一轮比赛。我用相同的 SKScene 重新加载相同的 VC。这次创建了 Sprites，但 SKAction 没有运行。我添加了一堆日志语句来追踪它。

这是带有 SKAction 的代码：

NSInteger startZone = [TPMathUtilities randomOffscreenStartZone];
CGPoint startPointONE = [TPMathUtilities OFFScreenPointFinder:startZone];
NSInteger finishZone = [TPMathUtilities finishZoneFinder:startZone];
CGPoint finishPointONE = [TPMathUtilities OFFScreenPointFinder:finishZone];
NSLog(@"startPointONE = %f %f  finishPointONE = %f %f", startPointONE.x,startPointONE.y,finishPointONE.x,finishPointONE.y);
newTap.position = startPointONE;

CGFloat distanceToOffScreenPt = [TPMathUtilities distanceBetweenTwoPoints:startPointONE toPoint:finishPointONE];
CGFloat movementDuration = distanceToOffScreenPt/[[TPGameData data] tapBaseGeneratorVelocity];
NSLog(@"movementDuration = %f", movementDuration);

newTap runAction:[SKAction sequence:@[[SKAction runBlock:^{NSLog(@"starting TAP ACTIONS ");}],
                                       [SKAction moveTo:finishPointONE duration:movementDuration],
                                       [SKAction removeFromParent]]]];

这是第一轮的日志，可以看到"starting TAP ACTIONS"

UPDATE variables: localGenMult= 0.800000 tapBaseGen= 0.800000 gameInterval= 0.511158
startPointONE = -50.000000 740.000000  finishPointONE = 913.000000 -50.000000
movementDuration = 4.529381
UPDATE after Sprite Added 
starting TAP ACTIONS 

UPDATE variables: localGenMult= 0.800000 tapBaseGen= 0.800000 gameInterval= 0.512250
startPointONE = 1064.000000 158.000000  finishPointONE = 521.000000 808.000000
movementDuration = 3.079871
UPDATE after Sprite Added 
starting TAP ACTIONS 

UPDATE variables: localGenMult= 0.800000 tapBaseGen= 0.800000 gameInterval= 0.561383
startPointONE = 1064.000000 451.000000  finishPointONE = -50.000000 755.000000
movementDuration = 4.199035
UPDATE after Sprite Added
starting TAP ACTIONS 

UPDATE variables: localGenMult= 0.800000 tapBaseGen= 0.800000 gameInterval= 0.507709
startPointONE = 921.000000 808.000000  finishPointONE = -50.000000 110.000000
movementDuration = 4.348527
UPDATE after Sprite Added 
starting TAP ACTIONS

这是没有 SKAction 的第二轮：

UPDATE variables: localGenMult= 0.800000 tapBaseGen= 0.800000 gameInterval= 0.813655
startPointONE = 1064.000000 440.000000  finishPointONE = -50.000000 7.000000
movementDuration = 4.346155
UPDATE after Sprite Added 

UPDATE variables: localGenMult= 0.800000 tapBaseGen= 0.800000 gameInterval= 0.813989
startPointONE = 437.000000 -50.000000  finishPointONE = 652.000000 808.000000
movementDuration = 3.216464
UPDATE after Sprite Added 

UPDATE variables: localGenMult= 0.800000 tapBaseGen= 0.800000 gameInterval= 0.806389
startPointONE = 992.000000 -50.000000  finishPointONE = 856.000000 808.000000
movementDuration = 3.158952
UPDATE after Sprite Added 

UPDATE variables: localGenMult= 0.800000 tapBaseGen= 0.800000 gameInterval= 0.811594
startPointONE = -50.000000 146.000000  finishPointONE = 1064.000000 746.000000
movementDuration = 4.601108
UPDATE after Sprite Added

我创建 SKScene 的代码保持不变，上面的代码没有改变。猜猜为什么动作没有在第二轮的 Sprite 上激活？

Answer 1

@DFrog 引导我朝着正确的方向前进。问题出在展开的 segue 中。我的应用程序有一个初始 VC，玩家可以在其中选择一个游戏 'level.' 它会转到包含 SKScene 的第二个 VC。然后在游戏结束时 'unwinds' 返回选择器VC。

我删除了 VC 之间的所有 segues/connections，并按照此处的建议创建了一个新的 unwind segue： Unwind segue in a nutshell

现在效果很好。谢谢大家

重新加载 SKScene 后 SKAction 不是运行

SKAction not running after SKScene reloaded

ios

objective-c

sprite-kit

skaction

重新加载 SKScene 后 SKAction 不是 运行

SKAction not running after SKScene reloaded

ios

objective-c

sprite-kit

skaction

重新加载 SKScene 后 SKAction 不是运行