Highlight the last move.

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

diff --git a/www/js/book.js b/www/js/book.js
index 0b1e4372264a7afa77d9cae8dbdf0c5bfbf464e2..78dfed815cf8c3c782266ab5e47cf377383a58a0 100644 (file)
--- a/www/js/book.js
+++ b/www/js/book.js
@@ -1,7 +1,7 @@
 (function() {
 
 var board = null;
-var moves = [];
+var history = [];
 var move_override = 0;
 
 var entity_map = {
@@ -21,14 +21,39 @@ function escape_html(string) {
 var get_game = function() {
        var game = new Chess();
        for (var i = 0; i < move_override; ++i) {
-               game.move(moves[i]);
+               game.move(history[i]);
        }
        return game;
 }
 
 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();
 }
 
@@ -97,9 +122,11 @@ var show_lines = function(data, game) {
        var total_num = 0;
        for (var i = 0; i < moves.length; ++i) {
                var move = moves[i];
-               total_num += parseInt(move['white']);
-               total_num += parseInt(move['draw']);
-               total_num += parseInt(move['black']);
+               if (move['move']) {
+                       total_num += parseInt(move['white']);
+                       total_num += parseInt(move['draw']);
+                       total_num += parseInt(move['black']);
+               }
        }
 
        var headings_tr = $("#headings");
@@ -177,7 +204,7 @@ var show_lines = function(data, game) {
                var line = lines[i];
                var tr = document.createElement("tr");
 
-               if (line[0] === undefined || line[0] === null) {
+               if (line[0] === undefined) {
                        $(tr).addClass("totals");
                }
 
@@ -188,6 +215,14 @@ var show_lines = function(data, game) {
                                var td = document.createElement("td");
                                tr.appendChild(td);
                                $(td).addClass("move");
+                               if (line[j] !== undefined) {
+                                       if (move_override % 2 == 0) {
+                                               $(td).text(((move_override / 2) + 1) + ". ");
+                                       } else {
+                                               $(td).text(((move_override / 2) + 0.5) + "…");
+                                       }
+                               }
+
                                var move_a = document.createElement("a");
                                move_a.href = "javascript:make_move('" + line[j] + "')";
                                td.appendChild(move_a);
@@ -206,9 +241,14 @@ var show_lines = function(data, game) {
 }
 
 var make_move = function(move) {
-       moves.length = move_override;
-       moves.push(move);
-       move_override = moves.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;
@@ -222,13 +262,19 @@ var prev_move = function() {
 window['prev_move'] = prev_move;
 
 var next_move = function() {
-       if (move_override < moves.length) {
+       if (move_override < history.length) {
                ++move_override;
                update();
        }
 }
 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();
@@ -251,8 +297,13 @@ var onDrop = function(source, target) {
        // illegal move
        if (move === null) return 'snapback';
 
-       moves = game.history({ verbose: true });
-       move_override = moves.length;
+       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