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Question by Adam Bruns · Feb 21, 2010 at 08:43 AM · 2drotationmouse

object rotates toward mouse? 2D Top Gameplay

I'm Making a 2D game, from the top view, I have it so you can walk around and the camera follows (fyi the player is a sphere atm). I want it so that the gun will rotate around the sphere, pointing at wherever the mouse is, I originally tried:

var mouseX;
var mouseY;
function Update () {
mouseX = Input.mousePosition.z;
mouseY = Input.mousePosition.y;
transform.Rotate(Vector3(mouseX,mouseY,0));
}

but that did not work (it spun out of control on all axis, i dont want it to go up and down (y axis) rotate in a circle on the z and x axis). i looked at other posts and found this (it was for a 2D side view)

Vector3 mousePos = Input.mousePosition; mousePos.z = -(transform.position.x - Camera.mainCamera.transform.position.x);

Vector3 worldPos = Camera.mainCamera.ScreenToWorldPoint(mousePos);

transform.LookAt(worldPos);

but i have no idea what that stuff means nor how to use it if someone could help me get a code and explain how it works, or change one of these it would greatly help

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Answer by Nirav-Madhani · Jan 12, 2015 at 05:33 AM

Use Something like this

 var multiple : float = 1.0;
 
 var turnSpeedMultiplier : float = 2.0;
 var turnSpeed : float = 0.0;
 
 //// in update add  following code
 var targetTurnSpeed : float = 0.0;
     targetTurnSpeed= Input.GetAxis("Mouse X");
     targetTurnSpeed *= Mathf.Pow(turnSpeedMultiplier,3);
     targetTurnSpeed *= multiple ;
     turnSpeed = Mathf.Lerp(turnSpeed, targetTurnSpeed, Time.deltaTime * 25.0);
     transform.rotation.eulerAngles.y += turnSpeed * Time.deltaTime;
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