void OnCollisionEnter (Collision other)
	{
		hitLight.intensity = 8;
		hit = true;
	}
	
	void Update ()
	{
		if(hit)
			Flash();
	}
	
	void Flash ()
	{
		if (hitLight.intensity > 0)
			hitLight.intensity -= hitFlashFade*Time.deltaTime;
		else
		{
			hitLight.intensity = 0;
			hit = false;
		}
	}