unity movement script 2d

Code Example 1

public float MoveSpeed;
public float jumpPower;
public bool Cground = false;
  void Start()
  {
  }
  void Udpate ()
  {
      Jump();
      Vector3 Move = new Vector3(Input.GetAxis("Horizontal"), 0, 0);
	  transform.postion += Move * Time.deltaTime * MoveSpeed;
  }
  void Jump ()
  {
      if (Input.GetKeyDown(KeyCode.Space) && Cground = true)
      {
      	gameObject.AddForce(new Vector2(0f, JumpPower), ForceMode2D.Impulse);
        Cground = false;
      }
  }

  void OnCollisionEnter2D(Collision2D other)
  {
      Cground = true 
  }

Code Example 2

//player must have a rigidbody2D and a box colider
public float moveSpeed = 5f;
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        Jump();
        Vector3 movement = new Vector3(Input.GetAxis("Horizontal"), 0f, 0f);
        transform.position += movement * Time.deltaTime * moveSpeed;
    }

    void Jump()
    {
        if (Input.GetButtonDown("Jump"))
        {
            gameObject.GetComponent<Rigidbody2D>().AddForce(new Vector2(0f, 5f), ForceMode2D.Impulse);
        }
    }