/** @param {!string} fen
* @return {!string}
*
- * Return whose side it is to play (W or B), given a FEN.
- * This is in uppercase due to historical reasons, which we
- * should get rid of.
+ * Return whose side it is to play (w or b), given a FEN.
*/
function find_toplay(fen) {
- return fen.split(' ')[1].toUpperCase();
+ return fen.split(' ')[1];
}
/** @param {!string} fen
/**
* @param {!string} start_fen
* @param {Array.<string>} pv
- * @param {number} move_num
- * @param {!string} toplay
* @param {Array<{ first_move: integer, score: Object }>} scores
* @param {number} start_display_move_num
* @param {number=} opt_limit
* @param {boolean=} opt_showlast
*/
-function add_pv(start_fen, pv, move_num, toplay, scores, start_display_move_num, opt_limit, opt_showlast) {
+function add_pv(start_fen, pv, scores, start_display_move_num, opt_limit, opt_showlast) {
display_lines.push({
start_fen: start_fen,
pv: pv,
- move_num: parseInt(move_num),
- toplay: toplay,
+ move_num: find_move_num(start_fen),
+ toplay: find_toplay(start_fen),
scores: scores,
start_display_move_num: start_display_move_num
});
if (start_display_move_num > 0) {
pv = pv.slice(start_display_move_num);
let to_add = start_display_move_num;
- if (toplay === 'B') {
+ if (toplay === 'b') {
++move_num;
- toplay = 'W';
+ toplay = 'w';
--to_add;
}
if (to_add % 2 == 1) {
- toplay = 'B';
+ toplay = 'b';
--to_add;
}
move_num += to_add / 2;
let i = 0;
if (opt_limit && opt_showlast && pv.length > opt_limit) {
// Truncate the PV at the beginning (instead of at the end).
- // We assume here that toplay is 'W'. We also assume that if
+ // We assume here that toplay is 'w'. We also assume that if
// opt_showlast is set, then it is the history, and thus,
// the UI should be to expand the history.
ret.appendChild(document.createTextNode('('));
++i;
}
move_num += i / 2;
- } else if (toplay == 'B' && pv.length > 0) {
+ } else if (toplay == 'b' && pv.length > 0) {
ret.appendChild(document.createTextNode(move_num + '. … '));
}
for (; i < pv.length; ++i) {
in_tb = true;
}
- if (toplay == 'B' && i == 0) {
+ if (toplay == 'b' && i == 0) {
++move_num;
- toplay = 'W';
- } else if (toplay == 'W') {
+ toplay = 'w';
+ } else if (toplay == 'w') {
if (i > opt_limit && !opt_showlast) {
if (in_tb) {
prefix += ')';
}
prefix += ' ' + move_num + '. ';
++move_num;
- toplay = 'B';
+ toplay = 'b';
} else {
prefix += ' ';
- toplay = 'W';
+ toplay = 'w';
}
ret.appendChild(document.createTextNode(prefix));
moves.push(move);
}
- let move_num = find_move_num(base_fen);
- let toplay = find_toplay(base_fen);
- let invert = (toplay === 'B');
+ let invert = (find_toplay(base_fen) === 'b');
if (current_display_line && current_display_move % 2 == 0 && !current_display_line_is_history) {
invert = !invert;
}
let pv_td = document.createElement("td");
tr.appendChild(pv_td);
pv_td.classList.add("pv");
- pv_td.append(add_pv(base_fen, base_line.concat([ line['move'] ]), move_num, toplay, scores, start_display_move_num));
+ pv_td.append(add_pv(base_fen, base_line.concat([ line['move'] ]), scores, start_display_move_num));
tbl.append(tr);
continue;
let pv_td = document.createElement("td");
tr.appendChild(pv_td);
pv_td.classList.add("pv");
- pv_td.append(add_pv(base_fen, base_line.concat(line['pv']), move_num, toplay, scores, start_display_move_num, 10));
+ pv_td.append(add_pv(base_fen, base_line.concat(line['pv']), scores, start_display_move_num, 10));
tbl.append(tr);
}
// unconditionally taken from current_data (we're not interested in
// historic history).
if (current_data['position']['history']) {
- let start = (current_data['position'] && current_data['position']['start_fen']) ? current_data['position']['start_fen'] : 'start';
- add_pv(start, current_data['position']['history'], 1, 'W', null, 0, 8, true);
+ let start = (current_data['position'] && current_data['position']['start_fen']) ? current_data['position']['start_fen'] : 'rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1';
+ add_pv(start, current_data['position']['history'], null, 0, 8, true);
} else {
display_lines.push(null);
}
// Find the previous move.
let previous_move_num, previous_toplay;
let fen = data['position']['fen'];
- if (find_toplay(fen) === 'B') {
+ if (find_toplay(fen) === 'b') {
previous_move_num = find_move_num(fen);
- previous_toplay = 'W';
+ previous_toplay = 'w';
} else {
previous_move_num = find_move_num(fen) - 1;
- previous_toplay = 'B';
+ previous_toplay = 'b';
}
last_move = format_move_with_number(
data['position']['last_move'],
previous_move_num,
- previous_toplay == 'W');
+ previous_toplay == 'w');
headline += ' after ' + last_move;
} else {
last_move = null;
hiddenboard.move(data['pv'][i + 1]); // To keep continuity.
}
- let alt_moves = find_nonstupid_moves(data, 30, toplay === 'B');
+ let alt_moves = find_nonstupid_moves(data, 30, toplay === 'b');
for (let i = 1; i < alt_moves.length && i < 3; ++i) {
hiddenboard = new Chess(base_fen);
let move = patch_move(hiddenboard.move(alt_moves[i]));
// See if all semi-reasonable moves have only one possible response.
if (data['pv'].length >= 2) {
- let nonstupid_moves = find_nonstupid_moves(data, 300, toplay === 'B');
+ let nonstupid_moves = find_nonstupid_moves(data, 300, toplay === 'b');
let hiddenboard = new Chess(base_fen);
hiddenboard.move(data['pv'][0]);
let response = hiddenboard.move(data['pv'][1]);
if (first_move_num !== undefined) {
let fen = data['position']['fen'];
let last_move_num = find_move_num(fen) * 2 - 3;
- if (find_toplay(fen) === 'B') {
+ if (find_toplay(fen) === 'b') {
++last_move_num;
}
projects / remoteglot / blobdiff