Highlight the last move.

[remoteglot-book] / www / js / book.js

diff --git a/www/js/book.js b/www/js/book.js
index 8f0c24164d4434142ff0cd1ddd958520f2aebab6..78dfed815cf8c3c782266ab5e47cf377383a58a0 100644 (file)
--- a/www/js/book.js
+++ b/www/js/book.js
@@ -27,8 +27,33 @@ var get_game = function() {
 }
 
 var update = function() {
+       var text = "";
+       for (var i = 0; i < history.length; ++i) {
+               if (i % 2 == 0) {
+                       text += (i/2 + 1) + ". ";
+               }
+               if (i + 1 == move_override) {
+                       text += '<strong>' + history[i] + '</strong>';
+               } else {
+                       text += '<a href="javascript:set_move(' + (i + 1) + ')">' + history[i] + '</a>';
+               }
+               text += " ";
+       }
+       $('#gamehistory').html(text);
+
        var game = get_game();
        board.position(game.fen());
+
+       var all_moves = game.history({ verbose: true });
+       if (all_moves.length > 0) {
+               var last_move = all_moves.pop();
+               var highlight_from = last_move.from;
+               var highlight_to = last_move.to;
+               $("#board").find('.square-55d63').removeClass('nonuglyhighlight');
+               $("#board").find('.square-' + highlight_from).addClass('nonuglyhighlight');
+               $("#board").find('.square-' + highlight_to).addClass('nonuglyhighlight');
+       }
+
        fetch_analysis();
 }
 
@@ -191,10 +216,10 @@ var show_lines = function(data, game) {
                                tr.appendChild(td);
                                $(td).addClass("move");
                                if (line[j] !== undefined) {
-                                       if (history.length % 2 == 0) {
-                                               $(td).text(((history.length / 2) + 1) + ". ");
+                                       if (move_override % 2 == 0) {
+                                               $(td).text(((move_override / 2) + 1) + ". ");
                                        } else {
-                                               $(td).text(((history.length / 2) + 0.5) + ". …");
+                                               $(td).text(((move_override / 2) + 0.5) + "…");
                                        }
                                }
 
@@ -216,9 +241,14 @@ var show_lines = function(data, game) {
 }
 
 var make_move = function(move) {
-       history.length = move_override;
-       history.push(move);
-       move_override = history.length;
+       if (move_override < history.length && history[move_override] == move) {
+               // User effectively only moved forward in history.
+               ++move_override;
+       } else {
+               history.length = move_override;
+               history.push(move);
+               move_override = history.length;
+       }
        update();
 }
 window['make_move'] = make_move;
@@ -239,6 +269,12 @@ var next_move = function() {
 }
 window['next_move'] = next_move;
 
+var set_move = function(n) {
+       move_override = n;
+       update();
+}
+window['set_move'] = set_move;
+
 // almost all of this stuff comes from the chessboard.js example page
 var onDragStart = function(source, piece, position, orientation) {
        var game = get_game();
@@ -261,8 +297,13 @@ var onDrop = function(source, target) {
        // illegal move
        if (move === null) return 'snapback';
 
-       history = game.history({ verbose: true });
+       var new_history = game.history({ verbose: true });
+       history = [];
+       for (var i = 0; i < new_history.length; ++i) {
+               history.push(new_history[i].san);
+       }
        move_override = history.length;
+       update();
 };
 
 // update the board position after the piece snap