Keep track of number of viewers.
[remoteglot] / www / js / remoteglot.js
index fa7e5d4..303f148 100644 (file)
@@ -1,19 +1,27 @@
+var board = [];
 var arrows = [];
 var arrow_targets = [];
 var occupied_by_arrows = [];
+var ims = 0;
+var highlight_from = undefined;
+var highlight_to = undefined;
+var unique = Math.random();
 
 var request_update = function(board, first) {
        $.ajax({
-               //url: "http://analysis.sesse.net/analysis.pl?first=" + first
-               url: "http://analysis.sesse.net:5000/analysis.pl?first=" + first
-       }).done(function(data) {
-               update_board(board, data);
+               url: "http://analysis.sesse.net/analysis.pl?ims=" + ims + "&unique=" + unique
+               //url: "http://analysis.sesse.net:5000/analysis.pl?ims=" + ims + "&unique=" + unique
+       }).done(function(data, textstatus, xhr) {
+               ims = xhr.getResponseHeader('X-Remoteglot-Last-Modified');
+               var num_viewers = xhr.getResponseHeader('X-Remoteglot-Num-Viewers');
+               update_board(board, data, num_viewers);
        });
 }
 
 var clear_arrows = function() {
        for (var i = 0; i < arrows.length; ++i) {
-               jsPlumb.detach(arrows[i]);
+               jsPlumb.detach(arrows[i].connection1);
+               jsPlumb.detach(arrows[i].connection2);
        }
        arrows = [];
 
@@ -28,6 +36,12 @@ var clear_arrows = function() {
        }
 }
 
+var redraw_arrows = function() {
+       for (var i = 0; i < arrows.length; ++i) {
+               position_arrow(arrows[i]);
+       }
+}
+
 var sign = function(x) {
        if (x > 0) {
                return 1;
@@ -78,37 +92,38 @@ var add_target = function() {
        arrow_targets.push(elem);
        return elem.id;
 }
+       
+var position_arrow = function(arrow) {
+       var zoom_factor = $("#board").width() / 400.0;
+       var line_width = arrow.line_width * zoom_factor;
+       var arrow_size = arrow.arrow_size * zoom_factor;
 
-var create_arrow = function(from_square, to_square, fg_color, line_width, arrow_size) {
-       var from_col = from_square.charCodeAt(0) - "a1".charCodeAt(0);
-       var from_row = from_square.charCodeAt(1) - "a1".charCodeAt(1);
-       var to_col   = to_square.charCodeAt(0) - "a1".charCodeAt(0);
-       var to_row   = to_square.charCodeAt(1) - "a1".charCodeAt(1);
-
-       var from_y = (7 - from_row)*49 + 25;
-       var to_y = (7 - to_row)*49 + 25;
-       var from_x = from_col*49 + 25;
-       var to_x = to_col*49 + 25;
+       var square_width = $(".square-a8").width();
+       var from_y = (7 - arrow.from_row + 0.5)*square_width;
+       var to_y = (7 - arrow.to_row + 0.5)*square_width;
+       var from_x = (arrow.from_col + 0.5)*square_width;
+       var to_x = (arrow.to_col + 0.5)*square_width;
 
        var dx = to_x - from_x;
        var dy = to_y - from_y;
        var len = Math.sqrt(dx * dx + dy * dy);
        dx /= len;
        dy /= len;
-
-       // Create arrow.
-       var s1 = add_target();
-       var d1 = add_target();
-       var s1v = add_target();
-       var d1v = add_target();
-       var pos = $("#board").position();
-       $("#" + s1).css({ top: pos.top + from_y + (0.5 * arrow_size) * dy, left: pos.left + from_x + (0.5 * arrow_size) * dx });
-       $("#" + d1).css({ top: pos.top + to_y - (0.5 * arrow_size) * dy, left: pos.left + to_x - (0.5 * arrow_size) * dx });
-       $("#" + s1v).css({ top: pos.top + from_y - 0 * dy, left: pos.left + from_x - 0 * dx });
-       $("#" + d1v).css({ top: pos.top + to_y + 0 * dy, left: pos.left + to_x + 0 * dx });
-       var connection1 = jsPlumb.connect({
-               source: s1,
-               target: d1,
+       var pos = $(".square-a8").position();
+       $("#" + arrow.s1).css({ top: pos.top + from_y + (0.5 * arrow_size) * dy, left: pos.left + from_x + (0.5 * arrow_size) * dx });
+       $("#" + arrow.d1).css({ top: pos.top + to_y - (0.5 * arrow_size) * dy, left: pos.left + to_x - (0.5 * arrow_size) * dx });
+       $("#" + arrow.s1v).css({ top: pos.top + from_y - 0 * dy, left: pos.left + from_x - 0 * dx });
+       $("#" + arrow.d1v).css({ top: pos.top + to_y + 0 * dy, left: pos.left + to_x + 0 * dx });
+
+       if (arrow.connection1) {
+               jsPlumb.detach(arrow.connection1);
+       }
+       if (arrow.connection2) {
+               jsPlumb.detach(arrow.connection2);
+       }
+       arrow.connection1 = jsPlumb.connect({
+               source: arrow.s1,
+               target: arrow.d1,
                connector:["Straight"],
                cssClass:"c1",
                endpoint:"Blank",
@@ -116,15 +131,15 @@ var create_arrow = function(from_square, to_square, fg_color, line_width, arrow_
                anchor:"Continuous",
                paintStyle:{ 
                        lineWidth:line_width,
-                       strokeStyle:fg_color,
+                       strokeStyle:arrow.fg_color,
                        outlineWidth:1,
                        outlineColor:"#666",
                        opacity:"60%"
                }
-       });            
-       var connection2 = jsPlumb.connect({
-               source: s1v,
-               target: d1v,
+       });
+       arrow.connection2 = jsPlumb.connect({
+               source: arrow.s1v,
+               target: arrow.d1v,
                connector:["Straight"],
                cssClass:"vir",
                endpoint:"Blank",
@@ -132,7 +147,7 @@ var create_arrow = function(from_square, to_square, fg_color, line_width, arrow_
                anchor:"Continuous",
                paintStyle:{ 
                        lineWidth:0,
-                       strokeStyle:fg_color,
+                       strokeStyle:arrow.fg_color,
                        outlineWidth:0,
                        outlineColor:"#666",
                },
@@ -140,16 +155,40 @@ var create_arrow = function(from_square, to_square, fg_color, line_width, arrow_
                        ["Arrow", {
                                cssClass:"l1arrow",
                                location:1.0,
-                               width: arrow_size, length: arrow_size,
-                               paintStyle:{ 
+                               width: arrow_size,
+                               length: arrow_size,
+                               paintStyle: { 
                                        lineWidth:line_width,
                                        strokeStyle:"#000",
                                },
                        }]
                ]
        });
-       arrows.push(connection1);
-       arrows.push(connection2);
+}
+
+var create_arrow = function(from_square, to_square, fg_color, line_width, arrow_size) {
+       var from_col = from_square.charCodeAt(0) - "a1".charCodeAt(0);
+       var from_row = from_square.charCodeAt(1) - "a1".charCodeAt(1);
+       var to_col   = to_square.charCodeAt(0) - "a1".charCodeAt(0);
+       var to_row   = to_square.charCodeAt(1) - "a1".charCodeAt(1);
+
+       // Create arrow.
+       var arrow = {
+               s1: add_target(),
+               d1: add_target(),
+               s1v: add_target(),
+               d1v: add_target(),
+               from_col: from_col,
+               from_row: from_row,
+               to_col: to_col,
+               to_row: to_row,
+               line_width: line_width,
+               arrow_size: arrow_size, 
+               fg_color: fg_color
+       };
+
+       position_arrow(arrow);
+       arrows.push(arrow);
 }
 
 // Fake multi-PV using the refutation lines. Find all “relevant” moves,
@@ -161,7 +200,7 @@ var find_nonstupid_moves = function(data, margin) {
        var best_score = undefined;
        var pv_score = undefined;
        for (var move in data.refutation_lines) {
-               var score = data.refutation_lines[move].score_sort_key;
+               var score = parseInt(data.refutation_lines[move].score_sort_key);
                if (move == data.pv_uci[0]) {
                        pv_score = score;
                }
@@ -181,12 +220,12 @@ var find_nonstupid_moves = function(data, margin) {
        // The PV move will always be first.
        var moves = [];
        for (var move in data.refutation_lines) {
-               var score = data.refutation_lines[move].score_sort_key;
+               var score = parseInt(data.refutation_lines[move].score_sort_key);
                if (move != data.pv_uci[0] && best_score - score <= margin) {
                        moves.push(move);
                }
        }
-       moves = moves.sort(function(a, b) { return data.refutation_lines[b].score_sort_key - data.refutation_lines[a].score_sort_key; });
+       moves = moves.sort(function(a, b) { return parseInt(data.refutation_lines[b].score_sort_key) - parseInt(data.refutation_lines[a].score_sort_key); });
        moves.unshift(data.pv_uci[0]);
 
        return moves;
@@ -231,8 +270,16 @@ var compare_by_sort_key = function(data, a, b) {
        if (ska > skb) return 1;
        return 0;
 };
+       
+var update_highlight = function()  {
+       $("#board").find('.square-55d63').removeClass('nonuglyhighlight');
+       if (highlight_from !== undefined && highlight_to !== undefined) {
+               $("#board").find('.square-' + highlight_from).addClass('nonuglyhighlight');
+               $("#board").find('.square-' + highlight_to).addClass('nonuglyhighlight');
+       }
+}
 
-var update_board = function(board, data) {
+var update_board = function(board, data, num_viewers) {
        // The headline.
        var headline = 'Analysis';
        if (data.position.last_move !== 'none') {
@@ -245,6 +292,14 @@ var update_board = function(board, data) {
 
        $("#headline").text(headline);
 
+       if (num_viewers === null) {
+               $("#numviewers").text("");
+       } else if (num_viewers == 1) {
+               $("#numviewers").text("You are the only current viewer");
+       } else {
+               $("#numviewers").text(num_viewers + " current viewers");
+       }
+
        // The score.
        if (data.score !== null) {
                $("#score").text(data.score);
@@ -271,13 +326,13 @@ var update_board = function(board, data) {
        // Update the board itself.
        board.position(data.position.fen);
 
-       $("#board").find('.square-55d63').removeClass('nonuglyhighlight');
        if (data.position.last_move_uci) {
-               var from = data.position.last_move_uci.substr(0, 2);
-               var to = data.position.last_move_uci.substr(2, 4);
-               $("#board").find('.square-' + from).addClass('nonuglyhighlight');
-               $("#board").find('.square-' + to).addClass('nonuglyhighlight');
+               highlight_from = data.position.last_move_uci.substr(0, 2);
+               highlight_to = data.position.last_move_uci.substr(2, 4);
+       } else {
+               highlight_from = highlight_to = undefined;
        }
+       update_highlight();
 
        // Print the PV.
        var pv = print_pv(data.pv_pretty, data.position.move_num, data.position.toplay);
@@ -378,9 +433,13 @@ var update_board = function(board, data) {
 
 var init = function() {
        // Create board.
-       var board = new ChessBoard('board', 'start');
+       board = new ChessBoard('board', 'start');
 
        request_update(board, 1);
-
+       $(window).resize(function() {
+               board.resize();
+               update_highlight();
+               redraw_arrows();
+       });
 };
 $(document).ready(init);