Object look at touch location when moving

Hi everyone,

I am new in C# and I' am making a 2D shooter. In my videogame, I would like that my player shoot bullets when he is moving thanks to the tilt of my phone. I succeeded to code the movement of my player thanks the tilt of my phone (as u can see below) :

Code (CSharp):

1.     void Start()
2.     {
3.         rb.GetComponent<Rigidbody2D>();
4.     }
5.  
6.     void Update()
7.     {
8.         dirX = Input.acceleration.x * moveSpeed;
9.         dirY = Input.acceleration.y * moveSpeed;
10.         transform.position = new Vector2(Mathf.Clamp(transform.position.x, -9.5f, 10.5f), Mathf.Clamp(transform.position.y, -5f, 5f));

But here is my problem : I don't succeed to shoot bullet in the direction where I touch the screen at the same time. I tried, I tried so many things but nothing...
An idea would be my player look at directly in the direction of the touch location and shoot considering that I created a gameObject "firePoint location" (which is a child of my player) to know where my bullets spawn
but I don't know how to do....

Any idea to solve the problem ?

Thanks you for your attention !

 

SOLUTION BELOW :

Add FixedUpdate with Vector2 and Mathf.Atan2 function.
Here is the code :

Code (CSharp):

1.     void FixedUpdate()
2.     {
3.  
4.         rb.velocity = new Vector2(dirX, dirY);
5.         Vector2 lookDir = mousePos - rb.position;
6.         float angle = Mathf.Atan2(lookDir.y, lookDir.x) * Mathf.Rad2Deg - 90f;
7.         rb.rotation = angle;
8.  
9.  
10.     }