Get position in game world of my mouse down

Hello

I followed a tutorial to get the position in the game world of my mouse when i mouse button down, but it doesn't work. It gives a position far removed from the correct position.

My floor position is 0,0,0 and i have a box collider with this code attatched:

Code (CSharp):

1. void OnMouseDown()
2. {
3.    Vector3 p = Camera.main.ScreenToWorldPoint(Input.mousePosition);
4.    Debug.Log(p);
5. }

The result is something far from the real location like this:

My camera is angled if that matters like this:

So i have an isometric viewing angle.

How do i correct this ? Seems the tutorial i followed was wrong.

 

The normal way to achieve the results is via ray casting...

http://unity3d.com/learn/tutorials/topics/physics/raycasting should give you some ideas...

If you have sometime I can make a quick example; though I doubt I will be first to show exactly how it is done...

Edit: Basically you fire a ray in the direction of the camera from the mouse position... see what object it hits, you can even get texcoords and fragment information from the ray...

 

As @HellSinker suggested, raycasting is the way to go.

About:

Code (CSharp):

1. Vector3 p = Camera.main.ScreenToWorldPoint(Input.mousePosition);

ScreenToWorldPoint expects the z-coordinate to be provided and non zero. However Input.mousePosition.z is always zero.