php-grandmaster/public/index.html at master · akondas/php-grandmaster · GitHub

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<!doctype html>
<html class="no-js" lang="">

<head>
    <meta charset="utf-8">
    <meta http-equiv="x-ua-compatible" content="ie=edge">
    <title>PHP Grandmaster - chess engine written in pure PHP</title>
    <meta name="description" content="">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <script src="chessboard-0.3.0.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/chess.js/0.10.2/chess.js"></script>
    <script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" integrity="sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS" crossorigin="anonymous">
    <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.7.1/css/all.css" integrity="sha384-fnmOCqbTlWIlj8LyTjo7mOUStjsKC4pOpQbqyi7RrhN7udi9RwhKkMHpvLbHG9Sr" crossorigin="anonymous">
    <link rel="stylesheet" href="styles.css">
</head>

<body>
    <div class="d-flex flex-column flex-md-row align-items-center p-3 px-md-4 mb-3 bg-white border-bottom shadow-sm">
        <h5 class="my-0 mr-md-auto font-weight-normal">PHP Grandmaster</h5>
        <a class="btn btn-outline-primary" href="https://github.com/akondas/php-grandmaster">
            <i class="fab fa-github"></i>
            GitHub
        </a>
    </div>
    <div class="container">
    <div class="card mb-4 shadow-sm">
        <div class="card-header">
            <h4 class="my-0 font-weight-normal">Play chess against PHP</h4>
        </div>
        <div class="card-body">
            <div id="board" class="board"></div>
            <br />
            <div class="info">
                <div style="display: none">
                    <label for="strategy">Strategy: </label>
                    <select id="strategy">
                        <option value="Grandmaster\Strategy\RandomMove">Random move</option>
                        <option value="Grandmaster\Strategy\PositionEvaluation">Position evaluation</option>
                        <option selected="selected" value="Grandmaster\Strategy\TreeSearch">Tree search</option>
                    </select>
                    <label for="depth">Depth (tree): </label>
                    <select id="depth">
                        <option value="1">1</option>
                        <option value="2">2</option>
                        <option value="3" selected="selected">3</option>
                        <option value="4">4</option>
                        <option value="5">5</option>
                        <option value="6">6</option>
                        <option value="7">7</option>
                        <option value="8">8</option>
                    </select>
                    <br /><br />
                </div>
                Moves evaluated: <span id="movesEvaluated"></span><br />
                Time*: <span id="time"></span><br />
                <small>*php time, http request latency not included</small>
                <br /><br />
                Move history:<br />
                <div id="move-history" class="move-history">
                </div>
            </div>
        </div>
    </div>
    </div>


    <script type="text/javascript">
        var board, game;

        $(function() {
            game = new Chess();

            var onDragStart = function (source, piece, position, orientation) {
                if (game.in_checkmate() === true || game.in_draw() === true ||
                    piece.search(/^b/) !== -1) {
                    return false;
                }
            };

            var renderMoveHistory = function (moves) {
                var historyElement = $('#move-history').empty();
                historyElement.empty();
                for (var i = 0; i < moves.length; i = i + 2) {
                    historyElement.append('<span>' + (1 + i / 2) + '. ' + moves[i] + ' ' + ( moves[i + 1] ? moves[i + 1] : ' ') + '</span><br>')
                }
                historyElement.scrollTop(historyElement[0].scrollHeight);

            };

            var loadMove = function () {
                $.post('/api.php', {
                    "state": game.fen(),
                    "strategy": $('#strategy').val(),
                    "depth": $('#depth').val()
                }, function(data) {
                    if(data.error) {
                        alert(data.error);
                        return;
                    }
                    if(data.move === null) {
                        alert('Game over');
                        return;
                    }

                    game.move(data.move);

                    // chessboard.js have some problems if we do it too fast ...
                    setTimeout(function () {
                        board.position(game.fen());
                    }, 100);

                    renderMoveHistory(game.history());
                    $('#movesEvaluated').text(data.movesEvaluated);
                    $('#time').text(data.time.toFixed(4) + 's');
                    if (game.game_over()) {
                        alert('Game over');
                    }
                }, 'json');
            };

            var onDrop = function (source, target) {

                var move = game.move({
                    from: source,
                    to: target,
                    promotion: 'q'
                });

                removeGreySquares();
                if (move === null) {
                    return 'snapback';
                }

                renderMoveHistory(game.history());
                loadMove();
            };

            var onMouseoverSquare = function(square, piece) {
                var moves = game.moves({
                    square: square,
                    verbose: true
                });

                if (moves.length === 0) return;

                greySquare(square);

                for (var i = 0; i < moves.length; i++) {
                    greySquare(moves[i].to);
                }
            };

            var onMouseoutSquare = function(square, piece) {
                removeGreySquares();
            };

            var removeGreySquares = function() {
                $('#board .square-55d63').css('background', '');
            };

            var greySquare = function(square) {
                var squareEl = $('#board .square-' + square);

                var background = '#a9a9a9';
                if (squareEl.hasClass('black-3c85d') === true) {
                    background = '#696969';
                }

                squareEl.css('background', background);
            };

            board = ChessBoard('board', {
                draggable: true,
                position: 'start',
                onDragStart: onDragStart,
                onDrop: onDrop,
                onMouseoutSquare: onMouseoutSquare,
                onMouseoverSquare: onMouseoverSquare,
                pieceTheme: 'http://chessboardjs.com/img/chesspieces/alpha/{piece}.png'
            });
        });
    </script>

</body>

</html>