gistfile1.txt

using UnityEngine;
using System.Collections;

public class StreetLight : MonoBehaviour 
{
	private bool state;
	private bool blink;
	private float stateTime;
	private float blinkTime;
	private float saveTime;

	public Light light;
	private float defaultIntensity;

	void Start () 
	{
		state = true;
		blink = false;
		saveTime = 1f;

		defaultIntensity = light.intensity;
		updateLight(true);
	}

	void FixedUpdate () 
	{
		stateTime += Time.deltaTime;
		if(state)
		{
			if((Random.value * 50f) + saveTime < stateTime)
			{
				state = false;
				blink = true;
				stateTime = 0f;
				blinkTime = 0f;
				updateLight(false);
			}
		}
		else
		{
			if((Random.value * 2f) + 0.3f < stateTime)
			{
				state = true;
				blink = false;
				stateTime = 0f;
				saveTime = 0.5f + Random.value * 3f;
				updateLight(true);
			}
			else
			{
				blinkTime += Time.deltaTime;
				if((Random.value * 0.2f) < blinkTime)
				{
					blink = !blink;
					updateLight(!blink);
					blinkTime = 0f;
				}
			}
		}
	}

	private void updateLight(bool _state)
	{
		light.intensity = _state ? defaultIntensity : 0f;
	}
}