C#

Ray

using UnityEngine;
using System.Collections;

public class raySet : MonoBehaviour { 
	float y;
	void FixedUpdate ()
	{
		Vector3 fwd = transform.TransformDirection (Vector3.forward * 10);
		Debug.DrawRay (transform.position, fwd, Color.blue, 0.1f);
		if (Physics.Raycast (transform.position, fwd, 200)) {
			print ("There is something in front of the object!");
		}
	}
}