how we can move character in fixed rotation

how we can move character in fixed rotation through 2d script

 

Do you mean that the character should rotate around a center, or do you mean that the character itself should rotate?

 

If you want to move a character like in a platform game. You need to add a Rigidbody2D and a BoxCollider2d to your game Object. This will make it so it will be able to apply forces to the object.

Code (CSharp):

1.  
2. private Rigidbody2D body;
3.     [SerializeField]
4.     private float maxMoveForce;
5.     [SerializeField]
6.     private float movementForce;
7.     [SerializeField]
8.     private float jumpForce;
9.  
10.     void Start()
11.     {
12.         body = GetComponent<Rigidbody2D>();
13.     }
14.  
15.     void Update()
16.     {
17.         if (Input.GetKey(KeyCode.D))
18.         {
19.             if (Mathf.Abs(body.velocity.x) < maxMoveForce)
20.             {
21.                 body.AddForce(Vector2.right * Time.deltaTime * movementForce * 100);
22.             }
23.         }
24.         if (Input.GetKey(KeyCode.A))
25.         {
26.             if (Mathf.Abs(body.velocity.x) < maxMoveForce)
27.             {
28.                 body.AddForce(Vector2.left * Time.deltaTime * movementForce * 100);
29.             }
30.         }
31.         if (Input.GetKeyDown(KeyCode.Space))
32.         {
33.             body.AddForce(Vector2.up * jumpForce);
34.         }
35.     }

So if you want it to rotate around according to your mouse it would be -

Code (CSharp):

1.  
2.     private float rotationOffSet = -90f;
3.  
4.  
5.     void Update () {
6.         if (Time.timeScale != 0)
7.         {
8.             RotateToMousePosition();
9.         }
10.     }
11.  
12.     void RotateToMousePosition()
13.     {
14.         Vector3 mouseWorldPosition = Camera.main.ScreenToWorldPoint(Input.mousePosition + Vector3.forward * 10f);
15.         float angle = AngleBetweenPoints(transform.position, mouseWorldPosition);
16.  
17.         transform.rotation = Quaternion.Euler(new Vector3(0f, 0f, angle - rotationOffSet));
18.     }
19.  
20.     float AngleBetweenPoints(Vector2 a, Vector2 b)
21.     {
22.         return Mathf.Atan2(a.y - b.y, a.x - b.x) * Mathf.Rad2Deg;
23.     }