// run interactive game
public void Interactive()
{
State state = new State();
var quit = false;
// moves executed in game
while (!quit)
{
state.Reset();
machineWhite = machineBlack = false;
var inGame = true;
while (inGame && !quit)
{
Draw(state, debugContinuousScroll, debugShowFen);
var moves = MoveGen.GenMoves(state);
if (debugShowMoves)
{
Console.WriteLine(MoveGen.MoveListToText(moves));
}
if (state.halfMoveClock >= 50) // 50 move rule
{
moves.Clear();
}
var gameOver = !moves.Any();
if (gameOver)
{
// check result
var result = CheckEnd(state);
Console.WriteLine($"Result: {result}");
}
// get move to do
Move move = null;
int score;
if (!gameOver && state.MoveColor == State.White && machineWhite)
{
(move, score) = computerMover.GenMove(state, -1, maxMs);
}
else if (!gameOver && state.MoveColor == State.Black && machineBlack)
{
(move, score) = computerMover.GenMove(state, -1, maxMs);
}
else
{
move = HumanInput(ref state, moves, ref quit, ref inGame);
}
if (move != null)
{
state.DoMove(move);
}
}
}
}
// 400k+ chess puzzles https://www.yacpdb.org/#static/home
// some test positions - todo - finish
public static void Test2(ref State state)
{
foreach (var fen in testFEN)
{
if (State.TryParseFEN(fen, out state))
{
var m = MoveGen.GenMoves(state);
Chess.Draw(state);
System.Console.WriteLine(MoveGen.MoveListToText(m));
return;
}
else
{
System.Console.WriteLine($"Error with FEN {fen}");
}
}
}
static string TestRandomGames(State state)
{
// run random game, check FEN
var r = new Random(1234); // make repeatable
for (int game = 0; game < 100; ++game)
{
state.Reset();
for (int moveCount = 1; moveCount < 300; ++moveCount)
{
var moves1 = MoveGen.GenMoves(state);
if (!moves1.Any())
{
break;
}
// check can do/undo all
var fs = state.ToFEN();
foreach (var m in moves1)
{
state.DoMove(m);
state.UndoMove();
var fe = state.ToFEN();
if (fe != fs)
{
return($"FEN mismatch trying move {m} \n{fs} != \n{fe}");
}
}
var move = moves1[r.Next(moves1.Count)];
System.Console.WriteLine($"{(moveCount + 1) / 2}: {move:5}");
// move do/undo checks
var f1 = state.ToFEN();
state.DoMove(move);
var f2 = state.ToFEN();
System.Console.WriteLine(f2);
state.UndoMove();
var f3 = state.ToFEN();
state.DoMove(move);
var f4 = state.ToFEN();
if (f1 != f3)
{
return($"FEN mismatch move {moveCount} : {move} \n{f1} != \n{f3}");
}
if (f2 != f4)
{
return($"FEN mismatch move {moveCount} : {move} \n{f2} != \n{f4}");
}
#if true
// test FEN parsing
State s2;
if (!State.TryParseFEN(f1, out s2))
{
return($"FEN parse failed {f1}");
}
var f5 = s2.ToFEN();
if (f1 != f5)
{
return($"FEN parse mismatch \n{f1} != \n{f5}");
}
var moves2 = MoveGen.GenMoves(s2);
var mt1 = MoveGen.MoveListToText(moves1);
var mt2 = MoveGen.MoveListToText(moves2);
if (mt1 != mt2)
{
return($"Move compare failed \n{mt1} != \n{mt2}\n{f1}==\n{f5}");
}
#endif
if (move.checkmate)
{
Chess.Draw(state);
}
}
}
return("");
}
