/// <summary>
/// Returns a <see cref="Vector3"/> with random values between -1 and 1 for its coordinates.
/// </summary>
/// <returns>A random vector3.</returns>
public static Vector3 Random( )
{
return(new Vector3(
ThreadRandom.NextFloat( ) * 2 - 1,
ThreadRandom.NextFloat( ) * 2 - 1,
ThreadRandom.NextFloat( ) * 2 - 1));
}
public IList <StringUnit> Breed()
{
//Get random index and split there.
var len = ParentA.Genome.Length;
var splitIndex = ThreadRandom.Next(len);
var parentAFirst = ParentA.Genome.ToString(0, splitIndex);
var parentASecond = ParentA.Genome.ToString(splitIndex, len - (splitIndex));
var parentBFirst = ParentB.Genome.ToString(0, splitIndex);
var parentBSecond = ParentB.Genome.ToString(splitIndex, len - (splitIndex));
//AF -> BS and BF -> AS
var firstChild = new StringUnit(new StringBuilder(string.Concat(parentAFirst, parentBSecond)), ParentA, ParentB);
var secondChild = new StringUnit(new StringBuilder(string.Concat(parentBFirst, parentASecond)), ParentA, ParentB);
var children = new List <StringUnit>()
{
firstChild, secondChild
};
//Attempt mutation
//todo: make Mutate method part of IPopulationUnit to avoid type casting here?
foreach (StringUnit child in children)
{
child.Mutate();
child.CalculateFitness(TargetString);
}
return(children);
}
public ActionResult Index()
{
var memes = GlobalMemeConfiguration.Memes.GetMemes();
// note: since this method uses output caching, you should really only expect
// the value to change once per minute
var randomIndex = ThreadRandom.Next(0, memes.Count);
var randomMeme = memes[randomIndex];
var root = HostingEnvironment.ApplicationVirtualPath ?? "";
if (!root.EndsWith("/"))
{
root += "/";
}
var viewModel = new IndexViewModel()
{
RecentMemes = new List <RecentMeme>
{
new RecentMeme
{
Url = root + "sap/wears-suit-and-tie-to-interview/phone-interview.jpg",
Alt = "socially awkward penguin: wears suit and tie to interview" + Environment.NewLine + "phone interview",
Title = "socially awkward penguin"
},
new RecentMeme
{
Url = root + "fry/not-sure-if-sunny-outside/or-hungover.jpg",
Alt = "futurama fry: not sure if sunny outside" + Environment.NewLine + "or hungover",
Title = "futurama fry"
},
new RecentMeme
{
Url = root + "scc/i-don't-buy-things-with-money/i-buy-them-with-hours-of-my-life.jpg",
Alt = "sudden clarity clarence: i don't buy things with money" + Environment.NewLine + "i buy them with hours of my life",
Title = "sudden clarity clarence"
},
new RecentMeme
{
Url = root + "blb/has-pet-rock/it-runs-away.jpg",
Alt = "bad luck brian: has pet rock" + Environment.NewLine + "it runs away",
Title = "bad luck brian"
}
},
BuilderViewModel = new BuilderViewModel
{
Memes = memes,
Lines = Enumerable.Repeat("", randomMeme.Lines.Count).ToList(),
SelectedMeme = randomMeme.Aliases.First()
}
};
return(View(viewModel));
}
public bool Mutate()
{
//Slow mutations over time
var probability = (double)Globals.BaseMutationChance * (double)1001;
if (ThreadRandom.Next(1, 1001) <= probability)
{
//todo:extract this builder into a threatstatic builder
var b = Globals.GetStringBuilder(Genome.ToString());
b[ThreadRandom.Next(b.Length)] = Globals.RandomChar();
SetupBuilder(b);
return(true);
}
return(false);
}
public static bool ProbabilityPass(float p)
{
return(ThreadRandom.ProbabilityPass(p));
}