How to use a raycast in a complete script? C#

Question

I am trying to figure out how to use a raycast in C#, but the scripting reference doesn't really help me understand how to use it. All I know is its a way of marking an object's 3D position on a 2D screen, or something like that.

I would be very appreciative if someone could make an example script with a raycast and give an explanation of what is going on. (Maybe they could have an object move to a mouseclick)

If don't have time to do that maybe you could just explain how to use a raycast and where it would go in a script.

I'm completely lost on this so any help would be nice. =)

Answer 1

Best Answer

Answer by Hullu · Jul 28, 2014 at 05:49 PM

I think the scripting reference explains it perfectly http://docs.unity3d.com/ScriptReference/Physics.Raycast.html

For example this casts ray from your camera to mouse position when you click left mouse button:

 void Update() {
 if (Input.GetMouseButtonDown(0)){
 Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
 if (Physics.Raycast(ray, 100))
 print("Hit something");
 }
 }

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