ScreenPointToRay question... (443184)

Scripting
1

When using screenPointToRay to get the position of the users mouse (like in the code below), how can you only get the position of only one of the cursor’s axes(so I could only get the x position regardless of the y position)?

var ray : Ray = Camera.main.ScreenPointToRay (Input.mousePosition);

Thanks

2

You are getting the mousePosition from Input which is a Vector3

var xPos = Input.mousePosition.x;

3

How would I integrate that into this script(not mine)? It gets the mouse position and then allows an object to look at the mouse, (like this).

function Update () {
	var ray : Ray = Camera.main.ScreenPointToRay (Input.mousePosition);
	var plane : Plane=new Plane(Camera.main.transform.forward, transform.position);
	var dist : float=0.0;
	plane.Raycast(ray, dist);
	transform.LookAt(ray.origin + ray.direction * dist);
}
4

???

First you ask how to use screenPointToRay without a y value (which by itself cannot be answered easily), then you use an example where the y value has clearly been used.

What are you doing?

5

What do you mean? I know that script I posted uses the y value. I am wondering how I would change it to not use the y value. I tried to modify it using the bit of code that fireside posted, but I get several errors.

function Update () {
	var ray : Ray = Camera.main.ScreenPointToRay (Input.mousePosition);
	var plane : Plane=new Plane(Camera.main.transform.forward, transform.position);
        var xPos = Input.mousePosition.x;
	var dist : float=0.0;
	plane.Raycast(ray, dist);
	transform.LookAt(xPos * dist);
}
6

You should not clear the y axis at all, but leave it on the center of the screen. Here’s the code:

function Update () {
        var pos : Vector2 = Input.mousePosition;
        pos.y = Screen.height / 2; //Center of the screen in y axis
	var ray : Ray = Camera.main.ScreenPointToRay (pos);
	var plane : Plane=new Plane(Camera.main.transform.forward, transform.position);
	var dist : float=0.0;
	plane.Raycast(ray, dist);
	transform.LookAt(xPos * dist);
}