C# Unity2d, I can't write normal character control code, what should I do?

Question

C++ / C#

Give me the character control code, maybe someone uses it? To be with the Ground check, here I have a code with a jump, but the problem is that when a character falls on a wall, he can jump endlessly. How to fix???

Answer 1

If the problem is only with the jump, then you only need to assign a separate tag to the ground and check the collision only by the tag - then there will be no jumping from the walls and ceiling.
if (collision.gameObject.CompareTag("Your earth tag")) {...}

Answer 2

Check it out:
https://youtu.be/mjaoJ1rDoaQ