skaction

问题 I listen to touch and add SKAction to a sprite. If existing actions are not complete yet, I want the action to be added to a queue so it will execute one after another. Any experienced similar design? I did using Array and Block. If there is any easier approach? @interface GAPMyScene() @property(strong,nonatomic)SKSpriteNode*ufo; @property(strong,nonatomic)NSMutableArray*animationQueue; @property(copy,nonatomic)void(^completeMove)(); @end @implementation GAPMyScene -(id)initWithSize:(CGSize

问题 Problem When the node hierarchy is encoded, as is common during application state preservation or a “game save”, nodes running SKAction actions with code blocks must be handled specially, since the code blocks cannot be encoded. Example 1: Delayed Callback after Animation Here, an orc has been killed. It is animated to fade out and then remove itself from the node hierarchy: SKAction *fadeAction = [SKAction fadeOutWithDuration:3.0]; SKAction *removeAction = [SKAction removeFromParent];

问题 Allright guys, I've been developing an app in which I have a NSMutableDictionary with an SKAction object in it. The SKAction is for playing a sound. This all works well, except ... the app crashes upon entering background with the following stack trace: * thread #1: tid = 0x187d7, 0x3461b932 libGPUSupportMercury.dylib`gpus_ReturnNotPermittedKillClient + 10, queue = 'com.apple.spritekit.renderQueue, stop reason = EXC_BAD_ACCESS (code=1, address=0x1) frame #0: 0x3461b932 libGPUSupportMercury

问题 I want to run two animations on my spriteNode depending on its rotation. If the value is negative run one of the animations, if it's positive run the other. And I managed to do that (kind of) but I have a problem. If Animation1 is running, and zRotation changes to positive, they both run because they are repeating forever. So I did this : NSMutableArray *walkingTextures = [NSMutableArray arrayWithCapacity:14]; for (int i = 1; i < 15; i++) { NSString *textureName = [NSString stringWithFormat:@

问题 I want to run two animations on my spriteNode depending on its rotation. If the value is negative run one of the animations, if it's positive run the other. And I managed to do that (kind of) but I have a problem. If Animation1 is running, and zRotation changes to positive, they both run because they are repeating forever. So I did this : NSMutableArray *walkingTextures = [NSMutableArray arrayWithCapacity:14]; for (int i = 1; i < 15; i++) { NSString *textureName = [NSString stringWithFormat:@

问题 I have two sprites which a flush against each other. I'm moving one of the sprites around using a SKAction and moving the other sprite using the update function. Every time the update function is called, it calculates the position the second sprite needs to be at so that it continues to be flush against the first sprite. However, it seems the update function can not move the second sprite fast enough, as a gap appears between the two sprites. I assume the SKAction repositioning of the first

问题 self.runAction(SKAction.sequence([ SKAction.waitForDuration(1), SKAction.runBlock({ self.speed = 0; print("pause") }), SKAction.waitForDuration(0.1), SKAction.runBlock({ self.speed = realSpeed; print("resume") }) ])) The last skaction does not get called. But when I remove the second waitForDuration, the last skaction gets called. self.runAction(SKAction.sequence([ SKAction.waitForDuration(1), SKAction.runBlock({ self.speed = 0; print("pause") }), SKAction.runBlock({ self.speed = realSpeed;

问题 I am working on a simple game where a player advances up through a level by collecting coins. Each coin that the player collects moves them further in the level. Here is a picture that explains it a little more: There are two different kinds of coins - regular coins and 'special' coins. Regular coins give them a normal boost. Special coins should give the player a temporary extra boost. Special coins can always be found in the middle of regular coin group (As shown in the picture). My problem

问题 How do you implement SKActionTimingFunction in objective-c?. I've looked everywhere and I just found an example in swift. Thanks! 回答1: heres an example moveAction.timingFunction = ^float(float t){ return sin(t * M_PI/2); }; man i hate blocks in objective-c 回答2: In Swift 4.2: moveAction.timingFunction = { time -> Float in return sin(time * .pi/2) } 来源： https://stackoverflow.com/questions/28520521/how-to-implement-skactiontimingfunction

问题 I have some code like following: -(void) createBall { _ballSprite = [SKSpriteNode spriteNodeWithImageNamed:@"ball0001"]; _ballSprite.position = CGPointMake(firstNode.position.x, firstNode.position.y); SKAction *ballScale =[SKAction scaleXTo:-0.5 duration:0]; SKAction *ballMove = [SKAction moveByX:0 y:-300 duration:0]; SKAction *ballMoveScale = [SKAction sequence:@[ballScale,ballMove]; SKAction *ballScaleMove = [SKAction sequence:@[ballMove,ballScale]; //Unused variable [_ballSprite runAction