How to raycast from camera through mouse position?

This code

Code (CSharp):

1.         Ray ray = Camera.main.ScreenPointToRay (Input.mousePosition);
2.         if (Physics.Raycast (ray, out hit, 100)) {
3.             Debug.Log (hit.transform.name);
4.             Debug.Log ("hit");
5.         }

does nothing.

 

That code looks correct.

Are you sure what you are trying to hit has a 3D collider and is within 100 units?

 

You need a RaycastHit variable, like this:

Code (CSharp):

1. Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
2.             RaycastHit hit;
3.             if (Physics.Raycast(ray, out hit, 100))
4.             {
5.                 Debug.Log(hit.transform.name);
6.                 Debug.Log("hit");
7.             }

 

If the object you are raycasting is more than 100 units away from the camera, the raycast will not work correctly..
so either zoom the object to the camera or increase the maxdistance

 

You can use Math.Infinity as the range, also answer #3 is correct, you need to create the Raycast Hit variable first.