#Raycast to drag an item

1 messages · Page 1 of 1 (latest)

proven hound
# 
private void Update()
    {
        if (Input.touchCount > 0)
        {
            touch = Input.GetTouch(0);
            if (touch.phase == TouchPhase.Moved)
            {
                Vector3 touchedPos = Camera.main.ScreenToWorldPoint(new Vector3(touch.position.x, 0, 0));

                transform.position = Vector3.Lerp(transform.position, touchedPos, lerpMultiplier * Time.deltaTime);
            }
        }
    }``` I was working on this for 3-4 hours, my brain want to explode already, I'm kinda new to touch. So, the problem Im having is that I want to move a gameobject only on one axis and not x and y with my finger but all will move at the same time. There should be a tag to handle touch
restive oyster
#

1 way is to use Dot product.

  • Cache the position when you press the screen.
  • Get the direction from cache towards the now-pressed point.
  • Calculate dot product of this vector and something like Vector3.Right
  • If the abs value is higher than a threshold, then only move on x axis. Else, only move on y axis.
#

Is that what you meant?

proven hound
#

hmmm... idk much about dotproduct