how to join and seperate objects

Unity Engine
1

Hello, i am newbie to game development but have some background on c# and java web programming. Thinking to make kind of puzzle game as shown in the image. Each circle will have random int value and user have to seperate and join the objects until they are sorted. Of course there will be some rules. Question is that how can I join those circle objects each other? And after the seperation, how can I merge them again?

I have looked a rope mechanism to do this process but I am not really sure if it will work or not. And since some of the assets for rope are paid, I dont want to pay without being sure.

Thanks in advance

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2

Are you just looking for a solution where the objects follow each other, or do you want a behaviour like a rope? If the latter, then you might use some sort of joint, such as a distancejoint or a hingejoint.

If you just want them to follow each other, then you can just parent one of them to the other, like this:

object1.transform.SetParent(object2.transform);

To break them apart you can set the parent to null.