var board = null;
var game = new Chess();
-var fens = [];
+var fens = []; // Position after each.
var move_override = 0;
var includetransp = true;
var stockfish = new Worker('/js/stockfish.js');
var engine_replacement_callback = null;
var recommended_move = null;
var reverse_dragging_from = null;
+var practice_mode = false;
+var practice_side = 'W';
+
+// TODO: Make this configurable.
+var practice_top_moves_limit = 5;
+var practice_minimum_move_fraction_start = 0.05;
+var practice_minimum_move_fraction_move10 = 0.30;
var entity_map = {
"&": "&",
}
var current_display_fen = function() {
- if (move_override == 0) {
+ return fen_before_move(move_override);
+}
+
+var fen_before_move = function(move_num) {
+ if (move_num == 0) {
return 'rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1';
} else {
- return fens[move_override - 1];
+ return fens[move_num - 1];
}
}
$("#board").find('.square-' + highlight_to).addClass('nonuglyhighlight');
}
+ if (practice_mode) {
+ find_last_move_score();
+ var side_to_move = (move_override % 2 == 0) ? 'W' : 'B';
+ if (side_to_move !== practice_side) {
+ find_computer_move();
+ }
+ // Fall through to get the line name and such.
+ }
+
fetch_analysis();
}
});
}
+var find_last_move_score = function() {
+ var history = game.history({ verbose: true });
+ var side_to_move = (move_override % 2 == 0) ? 'W' : 'B';
+ var move_num = (side_to_move === practice_side) ? (move_override - 2) : (move_override - 1);
+ if (move_num < 0) {
+ $("#yourmove").text("(none)");
+ $("#yourfraction").text("N/A");
+ $("#yourrank").text("N/A");
+ $("#yourawin").text("??.?%");
+ $("#yourawindiff").text("+?.?%");
+ return;
+ }
+
+ var chosen_move = history[move_num].san;
+ $("#yourmove").text(chosen_move);
+ $.ajax({
+ url: "/opening-stats.pl?fen=" + encodeURIComponent(fen_before_move(move_num)) +
+ ";includetransp=0"
+ }).done(function(data, textstatus, xhr) {
+ var moves = data['moves'];
+ var root_move = sort_moves_by_common(moves, data);
+ var your_move, your_index;
+
+ for (var i = 0; i < moves.length; ++i) {
+ var move = moves[i];
+ if (move['move'] === chosen_move) {
+ your_move = move;
+ your_index = i;
+ }
+ }
+ moves.sort(function(a, b) { return b['num'] - a['num'] });
+
+ if (your_move) {
+ $("#yourfraction").text(format_fraction(your_move['fraction']));
+ $("#yourawin").text(format_fraction(your_move['corrected_win_ratio']));
+ $("#yourrank").text(format_ordinal(your_index + 1) + ", based on " + root_move['num'] + " games");
+ var diff = your_move['corrected_win_ratio'] - root_move['corrected_win_ratio'];
+ $("#yourawindiff").css("color", "black");
+ if (diff === 0) {
+ $("#yourawindiff").text("0.0%");
+ } else if (diff > 0) {
+ $("#yourawindiff").text("+" + format_fraction(diff));
+ $("#yourawindiff").css("color", "green");
+ } else {
+ $("#yourawindiff").text(format_fraction(diff));
+ if (diff < -0.02) {
+ $("#yourawindiff").css("color", "red");
+ }
+ }
+ } else {
+ $("#yourfraction").text("??.?%");
+ $("#yourrank").text("?th");
+ $("#yourawin").text("??.?%");
+ $("#yourawindiff").text("+?.?%");
+ }
+ });
+}
+
+var find_computer_move = function() {
+ var fen = current_display_fen();
+ $.ajax({
+ url: "/opening-stats.pl?fen=" + encodeURIComponent(fen) + ";includetransp=0"
+ }).done(function(data, textstatus, xhr) {
+ var candidate_moves = [];
+
+ var moves = data['moves'];
+ var root_move = sort_moves_by_common(moves, data);
+
+ var practice_minimum_move_fraction;
+ if (move_override > 20) {
+ practice_minimum_move_fraction = practice_minimum_move_fraction_move10;
+ } else {
+ practice_minimum_move_fraction = practice_minimum_move_fraction_start +
+ ((move_override-1)/20.0) * (practice_minimum_move_fraction_move10 - practice_minimum_move_fraction_start);
+ }
+ console.log(practice_minimum_move_fraction);
+
+ for (var i = 0; i < Math.min(moves.length, practice_top_moves_limit); ++i) {
+ var move = moves[i];
+ if (i == 0 || move['fraction'] >= practice_minimum_move_fraction) {
+ candidate_moves.push(move);
+ }
+ }
+
+ // Pick one at random.
+ var chosen_index = Math.floor(Math.random() * candidate_moves.length);
+ var chosen = candidate_moves[chosen_index];
+ $("#compmove").text(chosen['move']);
+ $("#compfraction").text((100.0 * chosen['fraction']).toFixed(1) + "%");
+ if (candidate_moves.length == 1) {
+ $("#comprank").text("only candidate move");
+ } else {
+ $("#comprank").text(format_ordinal(chosen_index + 1) + " out of " + candidate_moves.length + " candidate moves");
+ }
+ make_move(chosen['move']);
+ });
+}
+
+// Add deried data and then sort moves to get the most common ones (in-place).
+// Remove the root mode and return it. Currently usable for practice mode only!
+var sort_moves_by_common = function(moves, data)
+{
+ var total_num = find_total_games(moves);
+ var root_move;
+ for (var i = 0; i < moves.length; ++i) {
+ var move = moves[i];
+ calc_move_derived_data(move, total_num, data, (practice_side === 'W'));
+ if (!move['move']) {
+ root_move = (moves.splice(i, 1))[0];
+ --i;
+ }
+ }
+ moves.sort(function(a, b) { return b['num'] - a['num'] });
+ return root_move;
+}
+
var add_td = function(tr, value) {
var td = document.createElement("td");
tr.appendChild(td);
$(td).text(value);
}
+var format_ordinal = function(x) {
+ var tens = Math.floor(x / 10) % 10;
+ if (tens == 1) {
+ return x + "th";
+ } else {
+ var ones = x % 10;
+ if (ones == 1) return x + "st";
+ if (ones == 2) return x + "nd";
+ if (ones == 3) return x + "rd";
+ return x + "th";
+ }
+}
+
+var format_fraction = function(x) {
+ return (100.0 * x).toFixed(1) + '%';
+}
+
var TYPE_MOVE = 0;
var TYPE_INTEGER = 1;
var TYPE_FLOAT = 2;
if (isNaN(line[j]) || !isFinite(line[j])) {
add_td(tr, '');
} else {
- add_td(tr, (100.0 * line[j]).toFixed(1) + "%");
+ add_td(tr, format_fraction(line[j]));
}
}
}
}
window['set_flipboard'] = set_flipboard;
+var set_practice = function(value) {
+ practice_mode = value;
+ if (practice_mode) {
+ practice_side = (move_override % 2 == 0) ? 'W' : 'B';
+ find_last_move_score();
+ $("#stats").hide();
+ $("#practiceoutput").show();
+ document.getElementById("includetransp").checked = false;
+ } else {
+ $("#stats").show();
+ $("#practiceoutput").hide();
+ }
+ update();
+}
+window['set_practice'] = set_practice;
+
var make_move = function(move, do_update) {
var history = game.history({ verbose: true });
if (move_override < history.length && history[move_override].san == move) {
window['make_move'] = make_move;
var prev_move = function() {
- if (move_override > 0) {
- --move_override;
+ var moves_to_skip = practice_mode ? 2 : 1;
+ if (move_override >= moves_to_skip) {
+ move_override -= moves_to_skip;
update();
window.history.replaceState(null, null, get_history_url());
}
window.onpopstate = onpopstate;
onpopstate();
+ set_practice(false);
$(window).keyup(function(event) {
if (event.which == 39) {
projects / remoteglot-book / blobdiff