public static SimulationRule FromString(string str)
{
var regex = new Regex(@"^B(?<birth>[0-9]{0,9})/S(?<stay>[0-9]{0,9})$", RegexOptions.Compiled | RegexOptions.IgnoreCase);
var match = regex.Match(str);
if (!match.Success) {
throw new ArgumentException("Rule string is invalid.");
}
var rule = new SimulationRule();
var birthChars = match.Groups["birth"].Value.ToCharArray();
var stayAliveChars = match.Groups["stay"].Value.ToCharArray();
foreach (var ch in birthChars) {
rule.Birth[ch - '0'] = true;
}
foreach (var ch in stayAliveChars) {
rule.StayAlive[ch - '0'] = true;
}
return rule;
}
public static bool Simulate(World world, SimulationRule simulationRule)
{
return Simulate(world, simulationRule.RuleFunction);
}