通过使用 android sdk 触摸 Unity3d 来拖动对象

Question

I am trying to move and object by touching it and dragging. I am testing it on my Samsung Galaxy SIII. I have used the following code. For some reason it moves faster than my finger. It should always be beneath my finger. What is wrong? (note: I haven't done the "move object only if you touch onto it" part, so right now it moves where ever I touch).

#pragma strict

var speed : float = 1;

function Start () {

}

function Update () { 
    if (Input.touchCount > 0 && Input.GetTouch(0).phase ==     TouchPhase.Moved) {

    // Get movement of the finger since last frame
    var touchDeltaPosition:Vector2 = Input.GetTouch(0).deltaPosition;


    // Move object across XY plane
    transform.position = Vector2.Lerp(transform.position,
                                            touchDeltaPosition, 
                                            Time.deltaTime*speed);
}
}

Answer 1

this is what i use, it may be a better option for you, it is based on the camera, the reason that your Vector2.Lerp is not working correctly i think is because of your time variable in it you could refer to this Lerp and tweak your 't' variable until it is good for you, or you can try this, this is what i use, also i subtract from x and add to y so my finger isnt over the graphic, best of luck :)

#pragma strict

var speed : float = 1;
var distance : float = 5;
function Start () {

}

function Update () { 
    if (Input.touchCount > 0 && Input.GetTouch(0).phase ==     TouchPhase.Moved) {

    // Get movement of the finger since last frame
    var touchDeltaPosition:Vector2 = Input.GetTouch(0).deltaPosition;

    var touchmove : Vector3 = Vector3(touchDeltaPosition.x, touchDeltaPosition.y, distance);


    // Move object across XY plane
    transform.position = Camera.main.ScreenToWorldPoint(touchmove);
}
}