How to Pause and Repeat Actions in an SKAction Sequence with Swift and Sprite Kit (Episode 26)

In the first couple minutes we'll give viewers a little background on why they might want to pause, then repeat the last action in an SKAction sequence (specifically, we'll take a quick look at our current Card and Board Games tutorial series). Sprite Kit allows developers to create sequences of code, for example, you might move a star up on the Y axis, then left on the X axis, then scale it down, and so on. But you can also create an SKAction (SKAction.runBlock) which simply runs a block of code, which provides for some really advanced functionality. In our example, we'll create a sequence that waits for a duration (SKAction.waitForDuration) then runs a block of code, then waits again, then runs more code and so on. So what happens if we want to re-run one of those actions. For example, if the code prompted users to "Draw another card", in a card game. We would need to track backward in the original SKAction sequence, and run it again from there. This obviously makes for an interesting example!