Keep track of number of viewers.

[remoteglot] / www / js / remoteglot.js

diff --git a/www/js/remoteglot.js b/www/js/remoteglot.js
index 34fa7f77082833d0998cfed7bf3479fabd3c0ce9..303f148a2226a845179a8c23bc85e1e916114c0d 100644 (file)
--- a/www/js/remoteglot.js
+++ b/www/js/remoteglot.js
@@ -2,15 +2,19 @@ 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);
        });
 }
 
@@ -94,18 +98,18 @@ var position_arrow = function(arrow) {
        var line_width = arrow.line_width * zoom_factor;
        var arrow_size = arrow.arrow_size * zoom_factor;
 
-       var square_width = Math.floor(($("#board").width() - 1) / 8);
-       var from_y = (7 - arrow.from_row + 0.5)*square_width + 1;
-       var to_y = (7 - arrow.to_row + 0.5)*square_width + 1;
-       var from_x = (arrow.from_col + 0.5)*square_width + 1;
-       var to_x = (arrow.to_col + 0.5)*square_width + 1;
+       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;
-       var pos = $("#board").position();
+       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 });
@@ -196,7 +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;
                }
@@ -216,12 +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;
@@ -275,7 +279,7 @@ var update_highlight = function()  {
        }
 }
 
-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') {
@@ -288,6 +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);