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Question by Irsan · Feb 23, 2011 at 03:21 AM · collisionraycast

Raycast collision detection?

I want to instantiate an object at the raycast's point of collision. Here is the script I have so far:

function Update () 
{
    if (Input.GetButtonDown("Fire1")) 
    {
        var ray : Ray = camera.ScreenPointToRay (Vector3(200,200,0));
        Debug.DrawRay (ray.origin, ray.direction * 10, Color.white);
    }
}

Any help? I've seen sample scripts, but they're interfering with the fact that the raycast is coming from the camera. I am a beginner at this.

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Answer by Jessy · Feb 23, 2011 at 11:45 AM

It doesn't matter that the ray is "coming from the camera". ScreenPointToRay creates a ray just like any other, with an origin and direction. Just take the last example from the docs and Instantiate something at hit.point.

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