Grab and Drag Camera Style

Unity Engine
1

Does anyone know of a tutorial that will help me make a grab and drag style camera? I want to be able to click and drag on the surface of the game world to move the camera around on the x-y axis (not up and down). I have written this script for the camera and it works, but it’s really half assed since i don’t really know how to make exactly what i want.

P.S. The reason I am changing Y to Z is because Input.mousePosition returns Y as up and down and for some stupid reason transform.position uses Z as up and down. Why can’t everything just use Z?

var HasClicked = false;
var ClickedPosition = Vector3(0,0,0);

function Start () 
{
	
}

function Update () 
{
	if (Input.GetMouseButton(0))
	{
		if (HasClicked == false)
		{
			ClickedPosition = Input.mousePosition;
			HasClicked = true;
		}

		var NewVec = ClickedPosition - Input.mousePosition;
		NewVec.z = NewVec.y;
		NewVec.y = 20;

		transform.position = NewVec;
	}
	else
	{
		HasClicked = false;
	}
}

Thanks

2

I came accross a script that included some 3ds max like controls which included panning plus others. I have just done a quick search for it now but it’s somewhere I can’t remember so in the meantime you may find something on this page useful to your question.

http://answers.unity3d.com/questions/26079/left-click-and-pan.html

EDIT: You should be able to find it here http://wiki.unity3d.com/index.php/MouseOrbitZoom

This is the bit I was talking about

// otherwise if middle mouse is selected, we pan by way of transforming the target in screenspace
else if (Input.GetMouseButton(2))
{
    //grab the rotation of the camera so we can move in a psuedo local XY space
    target.rotation = transform.rotation;
    target.Translate(Vector3.right * -Input.GetAxis("Mouse X") * panSpeed);
    target.Translate(transform.up * -Input.GetAxis("Mouse Y") * panSpeed, Space.World);
}