Preventing munliple jumps

Questions & Answers
1

I have a problem with my jumping code. It jumps once then doesn’t jump again. Any assistance?
using UnityEngine;
using System.Collections;

public class NewBehaviourScript : MonoBehaviour {
	public int speed;

	private Rigidbody2D rb2d;

	public int JumpSpeed;

	private int jcnt;

	private bool canjump = true;

	void Start () {
		rb2d = GetComponent<Rigidbody2D> ();
	}

	void Jump () {
		rb2d.AddForce(Vector2.up * JumpSpeed);
		canjump = false;
	}

	void OnCollisionEnter () {
		canjump = true;
	}

	void Update () {
		float mh = Input.GetAxis ( "Horizontal" );

		Vector2 movement = new Vector2 (mh, 0.0f);

		rb2d.AddForce (movement * speed);
		if (Input.GetButtonDown ("Jump") && canjump == true ) {
			Jump ();

		}
	}

			
}

i could give you any other useful information if you like

2

Hi,

you should use this instead

void OnCollisionEnter2D(Collision2D coll)  {
       canjump = true;
 }

but have a look at the PlatformController2d in the Standard Assets

(a problem i see with your version is that each collision will count so if you jump
at a wall you can jump again because that is alsow a collision)