Unity 2d android management

Good day! Made a simple game with control of two players on wasd and arrows. In this implementation on the PC, everything works fine.

void Update () { if (Input.GetKey(KeyCode.RightArrow)) dir = Vector2.right; else if (Input.GetKey(KeyCode.DownArrow)) dir = -Vector2.up; else if (Input.GetKey(KeyCode.LeftArrow)) dir = -Vector2.right; else if (Input.GetKey(KeyCode.UpArrow)) dir = Vector2.up; 

Then I decided to transfer this case to android. Accordingly, I created sprites of arrows, attached GUITexture to them, and wrote the following code

 public GUITexture Up1; public GUITexture Down1; public GUITexture Left1; public GUITexture Right1; void Update() { int count = Input.touchCount; for (int i = 0; i < count; i++) { Touch touch = Input.GetTouch(i); if (Up1.HitTest(touch.position)) dir = Vector2.up; if (Down1.HitTest(touch.position)) dir = - Vector2.up; if (Left1.HitTest(touch.position)) dir = Vector2.left; if (Right1.HitTest(touch.position)) dir = Vector2.right; } 

In this implementation, nothing works and in general, if I understood correctly, this does not handle multitouch.

I saw ready-made joysticks, but they are mostly on Unity3d and I don’t imagine how to fasten them on 2d and what to write at the same time.

I saw solutions through ray, but I have been studying unity very recently, therefore how ray works at all is not clear yet. As far as I understand, they look at the coordinates of tapas, and I need to poke a drawn up arrow - and it works the same way when I press the up key on the PC.