/// <summary>
/// Simple hash that is consistent across platforms, appropriate for proc-gen purposes (but not cryptographically secure or anything)
/// </summary>
/// <param name="text">the text to hash</param>
/// <returns>the int hash of the string</returns>
static public int HashString(string text)
{
	/*unchecked
	{
		int hash = 23;
		foreach (char c in text)
		{
			hash = hash * 31 + c;
		}
		return hash;
	}*/

	// (this is the Knuth hash)
	System.UInt64 hashedValue = 3074457345618258791ul;
	for (int i = 0; i < text.Length; i++)
	{
		hashedValue += text[i];
		hashedValue *= 3074457345618258799ul;
	}

	return (int)(hashedValue >> 32);
}

/// <summary>
/// Returns a hash string generated from the current date, to feed into the Gauntlet for a daily challenge
/// </summary>
/// <returns>A hash string to generate a daily challenge</returns>
static public string DailyHashString()
{
	System.Globalization.CultureInfo cInfo = new System.Globalization.CultureInfo("en-US");

	int w = cInfo.Calendar.GetWeekOfYear(System.DateTime.Now, System.Globalization.CalendarWeekRule.FirstDay, System.DayOfWeek.Monday);
	int d = cInfo.Calendar.GetDayOfYear(System.DateTime.Now);
	int y = cInfo.Calendar.GetYear(System.DateTime.Now);

	return d.ToString(System.Globalization.CultureInfo.InvariantCulture) + w.ToString(System.Globalization.CultureInfo.InvariantCulture) + y.ToString(System.Globalization.CultureInfo.InvariantCulture);
}