koobas.hobune.stream
move Game Object(hand) with mouse movement
hi guys,
i want to move my player's hand object with mouse cursor movements...can any one help me...i have googled past some hours, still i'm struggling to find the answer...
thank you..
your question is posted as a code block. Could you please be so kind to post it as text? There is a previewer when posting anything that helps you show what you are posting before doing so to prevent this kind of thing (Just saying).
it'll be good to move along with mouse cursor... because i wan to move and click some objects like search....
You are moving a 3D world game object using a 2D input (mouse), so you need to decide how to handle the third axis. In this situation it sounds like you will want it to move on a 'virtual plane' aligned to the camera; so it is always the same distance away and moves on a 2d surface, parallel to the screen.
To do this we need to translate the cursor location from screen space (x&y on the screen) to world space (x,y,z in your game world). This is done by creating a Ray, like so:
var ray : Ray = Camera.main.ScreenPointToRay (Input.mousePosition);
This 'shoots' a ray from the position of the mouse, through the screen and into the game world. Well, you can think of it like that. Rays are infinite in length; what we want is a point along it. So we use:
var pos : Vector3 = ray.GetPoint(5);
This gets a 3d coordinate for a point on our ray, 5 units from the camera. You can adjust this as necessary, or better yet make it a variable.
We now have our position, so all we need to do is make the object in question use it every frame:
transform.position = pos;
Adding those three lines should be a good starting point to getting the behviour you want. Hope this helps.
thanks for posting this! I'd been stuck for hours in the mire of raycast hit testing
This is so awesome. I've never seen picking a 3D object using 2D mouse being that simple. Thank you for this tip, novodantis1!
With the above solution, the hand changes its height in the virtual world as you move the mouse up/down.
If instead you want to keep the hand at a stable height in the world, you can do this:
void Update() {
// mouse wheel y moves hand to/from ground
this.height += Input.mouseScrollDelta.y;
// Don't go below ground
this.height = Mathf.Max(this.height, 0);
// Keep hand under mouse pointer, at stable world height
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
var heightPlane = new Plane(Vector3.up, new Vector3(0, this.height, 0));
var distanceFromCamera = 0F;
heightPlane.Raycast(ray, out distanceFromCamera);
transform.position = ray.GetPoint(distanceFromCamera);
}
