Index out of bounds error. How do i fix it? [duplicate]

Answer 1

If myTouchs.Length < 1 this means myTouchs contains 0 elements.

So if you do Input.GetTouch(0) it will return null has there is no Touch avaliable in the GetTouch array

In your else add this condition

else if( myTouchs.Length == 1) 
//your code

or change your initial if to

 if (myTouchs.Length >= 1)

Changing the else should look like

 if (myTouchs.Length > 1) {
    for (int i = 0; i < myTouchs.Length; i++)
    {
      if (myTouchs[i].position.y < transform.position.y * 2 && myTouchs[i].position.x < transform.position.x * 2) {
        touchPos = myTouchs[i].position;
        break;
      }
    }
    deltaVector = touchPos - transform.position;
  }
  else if( myTouchs.Length == 1) 

Answer 2

You should check that myTouchs has at least one element. Actually, you can enter the else branch even if myTouchs is empty, and this raises the exception.