How to set up character jump in Unity?

Question

C++ / C#

Tried to make the character move. Left and right it moves normally. He doesn't jump up at all. There are no errors in the script. All tags set up.

Answer 1

Answer 2

Your OnCollisionEnter2D functions are identical. Look, there are identical function bodies, that is, first one function gives a true value, and then false. And the jump works when true, but the second function gives false.