How to Make Characters Stick to Walls? 2D (c#)

Questions & Answers
1

I am working on a project that requires the player to be able to not only stick to a wall but also be able to jump off the wall and stick to another wall. Every time I try to mess wit the RigidBody2D variables it does not seem to make any difference, the character simple slides off. I already have the character movement working properly but figuring out how to make the character be able to stick to the walls is difficult. I also have a friction material on the wall already. Is it possible to allow the character to not be a rigid body? Any help is appreciated! Thanks in advance!

2

Yes you can try two things make the rigidbody kinematic (best bet in my option) or turn off the gravisty by doing myRigidbody2D.gravityScale = 0;.

Kinematic means in simple terms that the rigidbody will ignore external forces, but still can move and interact with other rigidbodies;

3

A while ago I made a game very similar to this. It was basically a square that would jump around a scene and stick to walls. The way I approached it was to freeze the X and Y positions as well as the Z rotation whenever OnCollisionEnter() was triggered.

Here is the code I used for my game.

	void OnCollisionEnter2D(Collision2D collison){
		if(collison.transform.tag != "Player"){
			if (!Input.GetMouseButtonDown (0)) {
				body.constraints = RigidbodyConstraints2D.FreezePositionY | RigidbodyConstraints2D.FreezePositionX | RigidbodyConstraints2D.FreezeRotation;
				//print ("Col");
				canJump = true;
				//print ("Enter");
			}
		} 
	}
	void OnCollisionExit2D(Collision2D collision){
		if(collision.transform.tag != "Player"){
			body.constraints = RigidbodyConstraints2D.None;
			canJump = false;
			//print ("Exit");
		}
	}
	void OnCollisionStay2D(Collision2D collision){
		if(collision.transform.tag != "Player"){
			//body.constraints = RigidbodyConstraints2D.FreezePositionY | RigidbodyConstraints2D.FreezePositionX | RigidbodyConstraints2D.FreezeRotation;
			canJump = true;
			//rigidbody2D.v = new Vector2 (0, 0);
			//print ("Stay");
		}
	}

Hope this helps.