/// <summary>
/// Copy constructor.
/// </summary>
internal Snapshot(Snapshot other)
{
CurrentUnit = other.CurrentUnit;
Field = new Field(other.Field);
Finished = other.Finished;
Score = other.Score;
UnitIndex = other.UnitIndex;
UnitsQueue = other.UnitsQueue;
UnitHistory = new List<Unit>(other.UnitHistory);
FieldEstimate = other.FieldEstimate;
PrevUnitClearedLines = other.PrevUnitClearedLines;
}
public SolutionViewModel(ExecutionResult result, Snapshot initialSnapshot)
{
InitialSnapshot = initialSnapshot;
CurrentSnapshot = initialSnapshot;
CurrentIndex = 0;
Commands = result.Commands;
Estimate = result.Estimate;
MoveNextCommand = new DelegateCommand(MoveNext, () => CurrentIndex < Commands.Length);
ResetCommand = new DelegateCommand(Reset);
PlayCommand = new DelegateCommand(Play);
MoveToFinalCommand = new DelegateCommand(MoveToFinal);
}
private static IEnumerable<ExecutionResult> Calculate(
Snapshot baseSnapshot,
MoveDirection? move,
ExecutionOptions options,
int depth,
double minEstimate)
{
var snapshot = move.HasValue
? Game.MakeMove(baseSnapshot, move.Value)
: baseSnapshot;
if (snapshot == null) // illegal move
yield break;
var estimate = SnapshotEvaluate(snapshot, options);
bool nextUnit = snapshot.UnitIndex > baseSnapshot.UnitIndex;
// stop recursion
if (snapshot.Finished || depth <= 0 || estimate < minEstimate || nextUnit) // TODO: some diff
{
yield return new ExecutionResult
{
Commands = new [] { move.Value },
Estimate = estimate,
Snapshot = snapshot
};
yield break;
}
var candidateMoves = (MoveDirection[])Enum.GetValues(typeof (MoveDirection));
var childResults = candidateMoves
.SelectMany(m => Calculate(snapshot, m, options, depth - 1, estimate))
.OrderByDescending(r => r.Estimate)
.Take((int)Math.Ceiling(options.MaxWidth));
foreach (var result in childResults)
{
var commands = move.HasValue
? result.Commands.Prepend(move.Value).ToArray()
: result.Commands;
yield return new ExecutionResult
{
Commands = commands,
Estimate = result.Estimate + CommandEncoding.GetWordsPower(commands) * options.PowerWordsBonus,
Snapshot = result.Snapshot
};
}
}
static void Main(string[] args)
{
int[] numberToSolve = args.Length == 1
? new[] {Convert.ToInt32(args[0])}
: Enumerable.Range(0, 25).ToArray();
var outputs = new List<Output>();
foreach (var number in numberToSolve)
{
var file = string.Format(@"inputs\problem_{0}.json", number);
Console.WriteLine("Processing file " + file);
var input = JsonConvert.DeserializeObject<Input>(File.ReadAllText(file));
Console.WriteLine("Seeds: " + input.SourceSeeds.Length);
foreach (var seed in input.SourceSeeds)
{
Console.WriteLine("Seed: " + seed);
Console.WriteLine("-----------------");
var snapshot = new Snapshot(input, seed);
var result = GeneticSolver.Run(snapshot);
Console.WriteLine("Score: " + result.Score);
Console.WriteLine("Options:");
Console.WriteLine(JsonConvert.SerializeObject(result.Options));
Console.WriteLine("Commands:");
//Console.WriteLine(string.Join("", result.Commands.Select(c => ((int)c).ToString())));
HashSet<string> usedWords;
var commandsStr = CommandEncoding.Encode(result.Commands, out usedWords);
Console.WriteLine("Different words: " + string.Join(", ", usedWords));
Console.WriteLine(commandsStr);
outputs.Add(new Output
{
Commands = commandsStr,
ProblemId = number,
Seed = seed
});
}
Console.WriteLine("__________________");
}
File.WriteAllText("solution.json", JsonConvert.SerializeObject(outputs.ToArray()));
Console.WriteLine("Press ENTER to exit...");
Console.ReadLine();
}
private void ShowSnapshot(Snapshot snapshot)
{
background.DrawUnit(snapshot.Field, snapshot.CurrentUnit, snapshot.UnitIndex);
}
public static Result Run(Snapshot snapshot)
{
var knownsPhrases = new[] {"r'lyeh", "ei!"};
int iterations = 10;
int populationSize = 12;
int bestSize = 6;
double mutationPercent = 0.3;
Result globalBest = null;
// Initialize population:
var population = Enumerable.Range(0, populationSize)
.Select(_ => Generate())
.ToList();
for (int i = 0; i < iterations; i++)
{
mutationPercent = mutationPercent * (iterations - i) / iterations;
Console.WriteLine("========= Generation #" + i);
var tasks = population
.ToDictionary(o => o, o => Task.Run(() => Calculate(snapshot, o)));
Task.WaitAll(tasks.Values.ToArray());
var results = tasks.Select(
item => new Result
{
Options = item.Key,
Score = item.Value.Result.Snapshot.Score,
UnitIndex = item.Value.Result.Snapshot.UnitIndex,
Commands = item.Value.Result.Commands
}).ToArray();
var manyWordResults = results.Where(
r =>
{
HashSet<string> usedWords;
CommandEncoding.Encode(r.Commands, out usedWords);
usedWords.ExceptWith(knownsPhrases);
return usedWords.Count > 1;
}).ToArray();
//if (manyWordResults.Length > 0)
//{
// return manyWordResults.OrderByDescending(r => r.Score).First();
//}
int pos = 0;
foreach (var result in results.OrderByDescending(r => r.Score))
{
++pos;
PrintResult(pos, result);
}
var bestResults = results
.OrderByDescending(r => r.Score).Take(bestSize)
.ToArray();
if (globalBest == null || globalBest.Score < bestResults.First().Score)
{
globalBest = bestResults.First();
}
population = new List<ExecutionOptions>(bestResults.Select(r => r.Options));
for (int j = 0; j < populationSize - bestSize; j++)
{
int firstIndex;
int secondIndex;
do
{
// TODO: carousel?
firstIndex = Random.Next(0, bestSize);
secondIndex = Random.Next(0, bestSize);
} while (firstIndex == secondIndex);
var child = Crossover(population[firstIndex], population[secondIndex]);
population.Add(child);
}
foreach (var options in population)
{
Mutate(options, mutationPercent);
}
}
return globalBest;
}
private static ExecutionResult Calculate(Snapshot snapshot, ExecutionOptions options)
{
var request = new ExecutionRequest
{
Snapshot = snapshot,
Options = options
};
var solver = new IterativeSearchSolver(1200); //new TraverseSolver();
return solver.Solve(request).First();
}
private static double SnapshotEvaluate(Snapshot snapshot, ExecutionOptions options)
{
if (snapshot.UnitHistory.Count <= 1) // new unit, so field has changed
{
snapshot.FieldEstimate = GetFieldEstimate(snapshot.Field, options);
}
return snapshot.Score
+ snapshot.FieldEstimate
+ GetUnitPositionBonus(snapshot.Field, snapshot.CurrentUnit, options);
}
