var stockfish = new Worker('/js/stockfish.js');
var engine_running = false;
var engine_replacement_callback = null;
-var recommended_dest = null;
+var recommended_move = null;
+var reverse_dragging_from = null;
var entity_map = {
"&": "&",
}
}
- var move_a = document.createElement("a");
- move_a.href = "javascript:make_move('" + line[j] + "')";
- td.appendChild(move_a);
- $(move_a).text(line[j]);
+ if (line[j] === '1-0' || line[j] === '1/2-1/2' || line[j] === '0-1') {
+ $(td).text($(td).text() + line[j]);
+ } else {
+ var move_a = document.createElement("a");
+ move_a.href = "javascript:make_move('" + line[j] + "')";
+ td.appendChild(move_a);
+ $(move_a).text(line[j]);
+ }
} else if (headings[j][1] == TYPE_INTEGER) {
add_td(tr, line[j] || 0);
} else if (headings[j][1] == TYPE_FLOAT) {
}
window['set_includetransp'] = set_includetransp;
+var set_flipboard = function(value) {
+ board.orientation(value ? 'black' : 'white');
+}
+window['set_flipboard'] = set_flipboard;
+
var make_move = function(move, do_update) {
var history = game.history({ verbose: true });
if (move_override < history.length && history[move_override].san == move) {
return false;
}
- recommended_dest = null;
- get_best_dest(pseudogame, source, function(dest) {
+ recommended_move = null;
+ get_best_dest(pseudogame, source, null, function(src, dest) {
$("#board").find('.square-55d63').removeClass('nonuglyhighlight');
if (dest !== null) {
var squareEl = $('#board .square-' + dest);
squareEl.addClass('highlight1-32417');
+ recommended_move = [src, dest];
}
- recommended_dest = dest;
});
}
-var get_best_dest = function(game, source, cb) {
- var moves = game.moves({ square: source, verbose: true });
+var mousedownSquare = function(e) {
+ reverse_dragging_from = null;
+ var square = $(this).attr('data-square');
+
+ var pseudogame = new Chess(current_display_fen());
+ if (pseudogame.game_over() === true) {
+ return;
+ }
+
+ // If the square is empty, or has a piece of the side not to move,
+ // we handle it. If not, normal piece dragging will take it.
+ var position = board.position();
+ if (!position.hasOwnProperty(square) ||
+ (pseudogame.turn() === 'w' && position[square].search(/^b/) !== -1) ||
+ (pseudogame.turn() === 'b' && position[square].search(/^w/) !== -1)) {
+ reverse_dragging_from = square;
+ get_best_dest(pseudogame, null, square, function(src, dest) {
+ if (src !== null) {
+ var squareEl = $('#board .square-' + src);
+ squareEl.addClass('highlight1-32417');
+ squareEl = $('#board .square-' + dest);
+ squareEl.addClass('highlight1-32417');
+ recommended_move = [src, dest];
+ }
+ });
+ } else {
+ recommended_src = null;
+ }
+}
+
+var mouseupSquare = function(e) {
+ if (reverse_dragging_from === null) {
+ return;
+ }
+ var source = $(this).attr('data-square');
+ var target = reverse_dragging_from;
+ reverse_dragging_from = null;
+ if (onDrop(source, target) !== 'snapback') {
+ onSnapEnd(source, target);
+ }
+ $("#board").find('.square-55d63').removeClass('highlight1-32417');
+}
+
+var get_best_dest = function(game, source, target, cb) {
+ var moves = game.moves({ verbose: true });
+ if (source !== null) {
+ moves = moves.filter(function(move) { return move.from == source; });
+ }
+ if (target !== null) {
+ moves = moves.filter(function(move) { return move.to == target; });
+ }
if (moves.length == 0) {
- cb(null);
+ cb(null, null);
return;
}
if (moves.length == 1) {
- cb(moves[0].to);
+ cb(moves[0].from, moves[0].to);
return;
}
var when_engine_is_ready = function() {
engine_running = true;
stockfish.onmessage = function(event) {
- var res = event.data.match(/^bestmove \S\S(\S\S)/);
+ var res = event.data.match(/^bestmove (\S\S)(\S\S)/);
if (res !== null) {
engine_running = false;
if (engine_replacement_callback !== null) {
engine_replacement_callback();
engine_replacement_callback = null;
} else {
- cb(res[1]);
+ cb(res[1], res[2]);
}
}
};
engine_replacement_callback = function() {};
}
if (source == target) {
- if (recommended_dest === null) {
+ if (recommended_move === null) {
return 'snapback';
} else {
// Accept the move. It will be changed in onSnapEnd.
}
} else {
// Suggestion not asked for.
- recommended_dest = null;
+ recommended_move = null;
}
// see if the move is legal
}
var onSnapEnd = function(source, target) {
- if (source == target && recommended_dest !== null) {
- target = recommended_dest;
+ if (source == target && recommended_move !== null) {
+ source = recommended_move[0];
+ target = recommended_move[1];
}
- recommended_dest = null;
+ recommended_move = null;
var pseudogame = new Chess(current_display_fen());
var move = pseudogame.move({
from: source,
onDrop: onDrop,
onSnapEnd: onSnapEnd
});
+ $("#board").on('mousedown', '.square-55d63', mousedownSquare);
+ $("#board").on('mouseup', '.square-55d63', mouseupSquare);
window.onpopstate = onpopstate;
onpopstate();
prev_move();
}
});
-}
+ // Seemingly the web worker is not started before we send it a message.
+ stockfish.postMessage("uci");
+}
$(document).ready(init);