Start using Chess.js.
[remoteglot] / www / js / remoteglot.js
index 074a474..8161236 100644 (file)
@@ -3,9 +3,6 @@
 /** @type {window.ChessBoard} @private */
 var board = null;
 
-/** @type {window.ChessBoard} @private */
-var hiddenboard = null;
-
 /** @type {Array.<{
  *      from_col: number,
  *      from_row: number,
@@ -401,13 +398,19 @@ var thousands = function(x) {
 /**
  * @param {!string} fen
  * @param {Array.<string>} uci_pv
- * @param {Array.<string>} pretty_pv
  * @param {number} move_num
  * @param {!string} toplay
  * @param {number=} opt_limit
  * @param {boolean=} opt_showlast
  */
-var add_pv = function(fen, uci_pv, pretty_pv, move_num, toplay, opt_limit, opt_showlast) {
+var add_pv = function(fen, uci_pv, move_num, toplay, opt_limit, opt_showlast) {
+       var hiddenboard = new Chess();
+       hiddenboard.load(fen);
+       for (var i = 0; i < uci_pv.length; ++i) {
+               hiddenboard.move(ucimove_to_chessjs_move(uci_pv[i]));
+       }
+       var pretty_pv = hiddenboard.history();
+
        display_lines.push({
                start_fen: fen,
                uci_pv: uci_pv,
@@ -541,7 +544,7 @@ var update_refutation_lines = function() {
                var pv_td = document.createElement("td");
                tr.appendChild(pv_td);
                $(pv_td).addClass("pv");
-               $(pv_td).html(add_pv(fen, line['pv_uci'], line['pv_pretty'], move_num, toplay, 10));
+               $(pv_td).html(add_pv(fen, line['pv_uci'], move_num, toplay, 10));
 
                tbl.append(tr);
        }
@@ -654,14 +657,14 @@ var update_board = function(data, num_viewers) {
 
        // Print the history.
        if (data['position']['history']) {
-               add_pv('start', data['position']['history'], data['position']['pretty_history'], 1, 'W', 8, true);
+               add_pv('start', data['position']['history'], 1, 'W', 8, true);
        } else {
                display_lines.push(null);
        }
        update_history();
 
        // Print the PV.
-       $("#pv").html(add_pv(data['position']['fen'], data['pv_uci'], data['pv_pretty'], data['position']['move_num'], data['position']['toplay']));
+       $("#pv").html(add_pv(data['position']['fen'], data['pv_uci'], data['position']['move_num'], data['position']['toplay']));
 
        // Update the PV arrow.
        clear_arrows();
@@ -803,52 +806,28 @@ var update_displayed_line = function() {
                $("#nextmove").html("<a href=\"javascript:next_move();\">Next</a></span>");
        }
 
-       hiddenboard.position(current_display_line.start_fen, false);
+       var hiddenboard = new Chess();
+       hiddenboard.load(current_display_line.start_fen);
        for (var i = 0; i <= current_display_move; ++i) {
-               var pos = hiddenboard.position();
-               var move = current_display_line.uci_pv[i];
-               var source = move.substr(0, 2);
-               var target = move.substr(2, 2);
-               var promo = move.substr(4, 1);
-
-               // Check if we need to do en passant.
-               var piece = pos[source];
-               if (piece == "wP" || piece == "bP") {
-                       if (source.substr(0, 1) != target.substr(0, 1) &&
-                           pos[target] === undefined) {
-                               var ep_square = target.substr(0, 1) + source.substr(1, 1);
-                               delete pos[ep_square];
-                               hiddenboard.position(pos, false);
-                       }
-               }
-
-               move = source + "-" + target;
-               hiddenboard.move(move, false);
-               pos = hiddenboard.position();
-
-               // Do promotion if needed.
-               if (promo != "") {
-                       pos[target] = pos[target].substr(0, 1) + promo.toUpperCase();
-                       hiddenboard.position(pos, false);
-               }
-
-               // chessboard.js does not automatically move the rook on castling
-               // (issue #51; marked as won't fix), so update it ourselves.
-               if (move == "e1-g1" && hiddenboard.position().g1 == "wK") {  // white O-O
-                       hiddenboard.move("h1-f1", false);
-               } else if (move == "e1-c1" && hiddenboard.position().c1 == "wK") {  // white O-O-O
-                       hiddenboard.move("a1-d1", false);
-               } else if (move == "e8-g8" && hiddenboard.position().g8 == "bK") {  // black O-O
-                       hiddenboard.move("h8-f8", false);
-               } else if (move == "e8-c8" && hiddenboard.position().c8 == "bK") {  // black O-O-O
-                       hiddenboard.move("a8-d8", false);
-               }
+               hiddenboard.move(ucimove_to_chessjs_move(current_display_line.uci_pv[i]));
        }
 
        highlighted_move = $("#automove" + current_display_line.line_number + "-" + current_display_move);
        highlighted_move.addClass('highlight'); 
 
-       board.position(hiddenboard.position());
+       board.position(hiddenboard.fen());
+}
+
+var ucimove_to_chessjs_move = function(move) {
+       var source = move.substr(0, 2);
+       var target = move.substr(2, 2);
+       var promo = move.substr(4, 1);
+
+       if (promo === '') {
+               return { from: source, to: target };
+       } else {
+               return { from: source, to: target, promotion: promo };
+       }
 }
 
 var init = function() {
@@ -856,7 +835,6 @@ var init = function() {
 
        // Create board.
        board = new window.ChessBoard('board', 'start');
-       hiddenboard = new window.ChessBoard('hiddenboard', 'start');
 
        request_update();
        $(window).resize(function() {