Here's an example, just for ease of understanding:
Sprite A is a ball. Sprite B is a cube. When the ball touches the cube once, I want the label to say first contact. When the same ball touches the same cube again, I want the label to say second contact. When the same ball , touches the same cube again, I want the label to say third contact.
How do I accomplish this?
It seems Sprite kit only allows 1 hit collisions between sprites to be programmed, which is enormously limited, in my opinion. Especially, since I want to create an enemy that actually changes behaviour dependant on the amount of hits it receives from the player, not just the same action for every collision.
Figured out a way. If you assign sprite A with points and use a cumulative score to keep track of the points you can then then use "score" as a collision counter. So each time sprite A touched Sprite B the score would increment by 10 points, simply then saying if score == 100 for example ... program something or if score == 150 ... program something (did begin method) and it worked, allowing you to program different actions or whatever at each point of collision with the same sprites! Awesome. Didn't think it would work but it did :)