CODEWITHSUNDEEP
unity-game-enginetouchscreenmouse-position
Johnny
Johnny

Reputation: 612

How can I move an UI Image to a touch position?

I have an image on the scene. Now when I touch on my mobile device to a specific position, I want, that the image moves to this position.

How can I do it?

I wrote this:

transform.position = Input.mousePosition;

But this don't work. Ok, it's working, but the image is not anymore on the screen. It's somewhere on the right side.

I found this. But it's also not working:

gameObject.GetComponent<RectTransform>().localPosition = new Vector2(Input.mousePosition.x, Input.mousePosition.y);

Here is the problem, that when I touch on the screen bottom left (mobile) the object is in the center of the screen.

Upvotes: 3

Views: 11659

Answers (3)

codemonkeytony
codemonkeytony

Reputation: 190

I know this is an old post but this took way longer than it should have so thought i'd share my solution in case it helps other trying to do the same thing.

                    var touchpoint = Instantiate(Resources.Load("prefabs/touchpoint"), new Vector3(0, 0, 0), Quaternion.identity) as GameObject;
                //set it parent to the main canvas
                touchpoint.transform.parent = MainCanvas.transform;
                //convert touch position to localposition reletive to canvas
                Vector2 localPos;
                RectTransformUtility.ScreenPointToLocalPointInRectangle(MainCanvasRect, new Vector3(t.position.x, t.position.y, 0), null, out localPos);
                //set position on canvas
                touchpoint.transform.localPosition = localPos;

Upvotes: 1

user3071284
user3071284

Reputation: 7100

You can move the UI Image by putting the following in a script attached to it:

void Update() {

    for (var i = 0; i < Input.touchCount; i++) {

        if (Input.GetTouch(i).phase == TouchPhase.Began) {

            // assign new position to where finger was pressed
            transform.position = new Vector3 (Input.GetTouch(i).position.x Input.GetTouch(i).position.y, transform.position.z);

        }

    }    

}

Upvotes: 3

WimJ
WimJ

Reputation: 49

use gameobject.transform.position = camera.ScreenToWorldPoint(Input.mousePosition);

for Desktop. for mobile you want to replace InputmousePostion with input.getTouch[i].position.

Upvotes: 1

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