Light a room with the cursor

This script can be used to create a "flashlight" effect, where a light is shone in the scene where the cursor is pointing.

To use it:

1. Create a new C# file named CursorLight.cs, and paste in the code below
2. Create a Light in your scene (Spotlight if 3D, Point Light if 2D) and attach the new Cursor Light component
3. Configure the Inspector, setting the light's default's state, and whether it's 3D or not.
4. To turn on and off at runtime, use the Object: Send message Action to pass Turn On and Turn Off commands to the Light object

CursorLight.cs:

using UnityEngine;
using AC;

public class CursorLight : MonoBehaviour
{

	public float depth = 2f;
	public bool isOn = true;
	public bool is3D = true;

	public void TurnOn ()
	{
		isOn = true;
	}

	public void TurnOff ()
	{
		isOn = false;
	}

	void Update ()
	{
		if (isOn)
		{
			Vector3 mousePosition = KickStarter.playerInput.GetMousePosition ();
			mousePosition.z = depth;
			Vector3 mouseWorldPosition = KickStarter.CameraMain.ScreenToWorldPoint (mousePosition);
			
			if (is3D)
			{
				transform.position = KickStarter.CameraMain.transform.position;
				transform.forward = mouseWorldPosition - transform.position;
			}
			else
			{
				transform.position = mouseWorldPosition;
			}
		}
		else
		{
			transform.position = new Vector3 (-1000f, 0f, 0f);
		}
	}

}