SpriteKit SKAction缓动 [英] SpriteKit SKAction easing

问题描述

我发现这个工作原理：

  SKAction * moveAction = [SKAction moveByX：moveX y：moveY duration：0.5]; 
 moveAction.timingMode = SKActionTimingEaseInEaseOut; 
 [node runAction：moveAction]; 
  

但是只有几种缓动类型可用 ，即Linear，EaseIn，EaseOut，EaseInOut。

这些缓动值是固定的，不能更改。我正在寻找类似EleasticInOut的东西。优选地具有更多的控制。

解决方案

我一直在使用SKEase框架：
https://github.com/buddingmonkey/SpriteKit-Easing
它像标准的SpriteKit操作一样简单，并添加所有通常更复杂的缓动，立方体，反弹，弹性，背面等。
SpriteKitUtils还添加了更复杂的缓动类型和一些方便的SpriteKit实用程序： https： //github.com/raywenderlich/SKTUtils

另一个选项是使用自定义操作方法滚动您自己的方法，并传递一段代码您的自定义缓动/动画函数：

   - （SKAction *）customActionWithDuration：（NSTimeInterval）seconds actionBlock： SKNode * node，CGFloat elapsedTime））block 
  

Well the title gives the question away, how can I apply easing to the SKAction node actions in SpriteKit?

I found that this works:

SKAction *moveAction = [SKAction moveByX:moveX y:moveY duration:0.5];
moveAction.timingMode = SKActionTimingEaseInEaseOut;
[node runAction:moveAction];

However there are only a few easing types available there, namely Linear, EaseIn, EaseOut, EaseInOut.

And those easing values are fixed and cannot be altered. I am looking for something like EleasticInOut. With preferably a bit more control. How can I create that?

解决方案

I've been using the SKEase framework: https://github.com/buddingmonkey/SpriteKit-Easing It's as simple to use as the standard SpriteKit Actions and adds all the usual more complex eases, cubic, bounce, elastic, back etc. SpriteKitUtils also adds more complex easing types and some handy SpriteKit utilities: https://github.com/raywenderlich/SKTUtils

The other option is to roll your own using the custom action method, and pass it a block of code with your custom easing/animation function:

-(SKAction *)customActionWithDuration:(NSTimeInterval)seconds actionBlock:(void (^)(SKNode *node, CGFloat elapsedTime))block

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