git.sesse.net Git - pkanalytics/blob - ultimate.js

   1 'use strict';
   2
   3 // No frameworks, no compilers, no npm, just JavaScript. :-)
   4
   5 let global_json;
   6 let global_filters = [];
   7
   8 addEventListener('hashchange', () => { process_matches(global_json, global_filters); });
   9 addEventListener('click', possibly_close_menu);
  10 fetch('ultimate.json')
  11    .then(response => response.json())
  12    .then(response => { global_json = response; process_matches(global_json, global_filters); });
  13
  14 function attribute_player_time(player, to, from, offense) {
  15         let delta_time;
  16         if (player.on_field_since > from) {
  17                 // Player came in while play happened (without a stoppage!?).
  18                 delta_time = to - player.on_field_since;
  19         } else {
  20                 delta_time = to - from;
  21         }
  22         player.playing_time_ms += delta_time;
  23         if (offense === true) {
  24                 player.offensive_playing_time_ms += delta_time;
  25         } else if (offense === false) {
  26                 player.defensive_playing_time_ms += delta_time;
  27         }
  28 }
  29
  30 function take_off_field(player, t, live_since, offense, keep) {
  31         if (keep) {
  32                 if (live_since === null) {
  33                         // Play isn't live, so nothing to do.
  34                 } else {
  35                         attribute_player_time(player, t, live_since, offense);
  36                 }
  37                 if (player.on_field_since !== null) {  // Just a safeguard; out without in should never happen.
  38                         player.field_time_ms += t - player.on_field_since;
  39                 }
  40         }
  41         player.on_field_since = null;
  42 }
  43
  44 function add_cell(tr, element_type, text) {
  45         let element = document.createElement(element_type);
  46         element.textContent = text;
  47         tr.appendChild(element);
  48         return element;
  49 }
  50
  51 function add_th(tr, text, colspan) {
  52         let element = document.createElement('th');
  53         let link = document.createElement('a');
  54         link.style.cursor = 'pointer';
  55         link.addEventListener('click', (e) => {
  56                 sort_by(element);
  57                 process_matches(global_json, global_filters);
  58         });
  59         link.textContent = text;
  60         element.appendChild(link);
  61         tr.appendChild(element);
  62
  63         if (colspan > 0) {
  64                 element.setAttribute('colspan', colspan);
  65         } else {
  66                 element.setAttribute('colspan', '3');
  67         }
  68         return element;
  69 }
  70
  71 function add_3cell(tr, text, cls) {
  72         let p1 = add_cell(tr, 'td', '');
  73         let element = add_cell(tr, 'td', text);
  74         let p2 = add_cell(tr, 'td', '');
  75
  76         p1.classList.add('pad');
  77         p2.classList.add('pad');
  78         if (cls === undefined) {
  79                 element.classList.add('num');
  80         } else {
  81                 element.classList.add(cls);
  82         }
  83         return element;
  84 }
  85
  86 function add_3cell_with_filler_ci(tr, text, cls) {
  87         let element = add_3cell(tr, text, cls);
  88
  89         let svg = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
  90         svg.classList.add('fillerci');
  91         svg.setAttribute('width', ci_width);
  92         svg.setAttribute('height', ci_height);
  93         element.appendChild(svg);
  94
  95         return element;
  96 }
  97
  98 function add_3cell_ci(tr, ci) {
  99         if (isNaN(ci.val)) {
 100                 add_3cell_with_filler_ci(tr, 'N/A');
 101                 return;
 102         }
 103
 104         let text;
 105         if (ci.format === 'percentage') {
 106                 text = (100 * ci.val).toFixed(0) + '%';
 107         } else {
 108                 text = ci.val.toFixed(2);
 109         }
 110         let element = add_3cell(tr, text);
 111         let to_x = (val) => { return ci_width * (val - ci.min) / (ci.max - ci.min); };
 112
 113         // Container.
 114         let svg = document.createElementNS('http://www.w3.org/2000/svg', 'svg');
 115         if (ci.inverted === true) {
 116                 svg.classList.add('invertedci');
 117         } else {
 118                 svg.classList.add('ci');
 119         }
 120         svg.setAttribute('width', ci_width);
 121         svg.setAttribute('height', ci_height);
 122
 123         // The good (green) and red (bad) ranges.
 124         let s0 = document.createElementNS('http://www.w3.org/2000/svg', 'rect');
 125         s0.classList.add('range');
 126         s0.classList.add('s0');
 127         s0.setAttribute('width', to_x(ci.desired));
 128         s0.setAttribute('height', ci_height);
 129         s0.setAttribute('x', '0');
 130
 131         let s1 = document.createElementNS('http://www.w3.org/2000/svg', 'rect');
 132         s1.classList.add('range');
 133         s1.classList.add('s1');
 134         s1.setAttribute('width', ci_width - to_x(ci.desired));
 135         s1.setAttribute('height', ci_height);
 136         s1.setAttribute('x', to_x(ci.desired));
 137
 138         // Confidence bar.
 139         let bar = document.createElementNS('http://www.w3.org/2000/svg', 'rect');
 140         bar.classList.add('bar');
 141         bar.setAttribute('width', to_x(ci.upper_ci) - to_x(ci.lower_ci));
 142         bar.setAttribute('height', ci_height / 3);
 143         bar.setAttribute('x', to_x(ci.lower_ci));
 144         bar.setAttribute('y', ci_height / 3);
 145
 146         // Marker line for average.
 147         let marker = document.createElementNS('http://www.w3.org/2000/svg', 'line');
 148         marker.classList.add('marker');
 149         marker.setAttribute('x1', to_x(ci.val));
 150         marker.setAttribute('x2', to_x(ci.val));
 151         marker.setAttribute('y1', ci_height / 6);
 152         marker.setAttribute('y2', ci_height * 5 / 6);
 153
 154         svg.appendChild(s0);
 155         svg.appendChild(s1);
 156         svg.appendChild(bar);
 157         svg.appendChild(marker);
 158
 159         element.appendChild(svg);
 160 }
 161
 162 function process_matches(json, filters) {
 163         let players = {};
 164         for (const player of json['players']) {
 165                 players[player['player_id']] = {
 166                         'name': player['name'],
 167                         'number': player['number'],
 168
 169                         'goals': 0,
 170                         'assists': 0,
 171                         'hockey_assists': 0,
 172                         'catches': 0,
 173                         'touches': 0,
 174                         'num_throws': 0,
 175                         'throwaways': 0,
 176                         'drops': 0,
 177                         'was_ds': 0,
 178                         'stallouts': 0,
 179
 180                         'defenses': 0,
 181                         'interceptions': 0,
 182                         'points_played': 0,
 183                         'playing_time_ms': 0,
 184                         'offensive_playing_time_ms': 0,
 185                         'defensive_playing_time_ms': 0,
 186                         'field_time_ms': 0,
 187
 188                         // For efficiency.
 189                         'offensive_points_completed': 0,
 190                         'offensive_points_won': 0,
 191                         'defensive_points_completed': 0,
 192                         'defensive_points_won': 0,
 193
 194                         'offensive_soft_plus': 0,
 195                         'offensive_soft_minus': 0,
 196                         'defensive_soft_plus': 0,
 197                         'defensive_soft_minus': 0,
 198
 199                         'pulls': 0,
 200                         'pull_times': [],
 201                         'oob_pulls': 0,
 202
 203                         // Internal.
 204                         'last_point_seen': null,
 205                         'on_field_since': null,
 206                 };
 207         }
 208
 209         // Globals.
 210         players['globals'] = {
 211                 'points_played': 0,
 212                 'playing_time_ms': 0,
 213                 'offensive_playing_time_ms': 0,
 214                 'defensive_playing_time_ms': 0,
 215                 'field_time_ms': 0,
 216
 217                 'offensive_points_completed': 0,
 218                 'offensive_points_won': 0,
 219                 'defensive_points_completed': 0,
 220                 'defensive_points_won': 0,
 221         };
 222         let globals = players['globals'];
 223
 224         for (const match of json['matches']) {
 225                 if (!keep_match(match['match_id'], filters)) {
 226                         continue;
 227                 }
 228
 229                 let our_score = 0;
 230                 let their_score = 0;
 231                 let handler = null;
 232                 let prev_handler = null;
 233                 let live_since = null;
 234                 let offense = null;  // True/false/null (unknown).
 235                 let puller = null;
 236                 let pull_started = null;
 237                 let last_pull_was_ours = null;  // Effectively whether we're playing an O or D point (not affected by turnovers).
 238                 let point_num = 0;
 239                 let game_started = null;
 240                 let last_goal = null;
 241
 242                 // The last used formations of the given kind, if any; they may be reused
 243                 // when the point starts, if nothing else is set.
 244                 let last_offensive_formation = null;
 245                 let last_defensive_formation = null;
 246
 247                 // Formations we've set, but haven't really had the chance to use yet
 248                 // (e.g., we get a “use zone defense” event while we're still on offense).
 249                 let pending_offensive_formation = null;
 250                 let pending_defensive_formation = null;
 251
 252                 // Formations that we have played at least once this point, after all
 253                 // heuristics and similar.
 254                 let formations_used_this_point = new Set();
 255
 256                 for (const [q,p] of Object.entries(players)) {
 257                         p.on_field_since = null;
 258                         p.last_point_seen = null;
 259                 }
 260                 for (const e of match['events']) {
 261                         let t = e['t'];
 262                         let type = e['type'];
 263                         let p = players[e['player']];
 264
 265                         // Sub management
 266                         let keep = keep_event(players, formations_used_this_point, filters);
 267                         if (type === 'in' && p.on_field_since === null) {
 268                                 p.on_field_since = t;
 269                                 if (!keep && keep_event(players, formations_used_this_point, filters)) {
 270                                         // A player needed for the filters went onto the field,
 271                                         // so pretend people walked on right now (to start their
 272                                         // counting time).
 273                                         for (const [q,p2] of Object.entries(players)) {
 274                                                 if (p2.on_field_since !== null) {
 275                                                         p2.on_field_since = t;
 276                                                 }
 277                                         }
 278                                 }
 279                         } else if (type === 'out') {
 280                                 take_off_field(p, t, live_since, offense, keep);
 281                                 if (keep && !keep_event(players, formations_used_this_point, filters)) {
 282                                         // A player needed for the filters went off the field,
 283                                         // so we need to attribute time for all the others.
 284                                         // Pretend they walked off and then immediately on again.
 285                                         //
 286                                         // TODO: We also need to take care of this to get the globals right.
 287                                         for (const [q,p2] of Object.entries(players)) {
 288                                                 if (p2.on_field_since !== null) {
 289                                                         take_off_field(p2, t, live_since, offense, keep);
 290                                                         p2.on_field_since = t;
 291                                                 }
 292                                         }
 293                                 }
 294                         }
 295
 296                         keep = keep_event(players, formations_used_this_point, filters);  // Recompute after in/out.
 297
 298                         // Liveness management
 299                         if (type === 'pull' || type === 'their_pull' || type === 'restart') {
 300                                 live_since = t;
 301                         } else if (type === 'catch' && last_pull_was_ours === null) {
 302                                 // Someone forgot to add the pull, so we'll need to wing it.
 303                                 console.log('Missing pull on ' + our_score + '\u2013' + their_score + ' in ' + match['description'] + '; pretending to have one.');
 304                                 live_since = t;
 305                                 last_pull_was_ours = !offense;
 306                         } else if (type === 'goal' || type === 'their_goal' || type === 'stoppage') {
 307                                 for (const [q,p] of Object.entries(players)) {
 308                                         if (p.on_field_since === null) {
 309                                                 continue;
 310                                         }
 311                                         if (type !== 'stoppage' && p.last_point_seen !== point_num) {
 312                                                 if (keep) {
 313                                                         // In case the player did nothing this point,
 314                                                         // not even subbing in.
 315                                                         p.last_point_seen = point_num;
 316                                                         ++p.points_played;
 317                                                 }
 318                                         }
 319                                         if (keep) attribute_player_time(p, t, live_since, offense);
 320
 321                                         if (type !== 'stoppage') {
 322                                                 if (keep) {
 323                                                         if (last_pull_was_ours === true) {  // D point.
 324                                                                 ++p.defensive_points_completed;
 325                                                                 if (type === 'goal') {
 326                                                                         ++p.defensive_points_won;
 327                                                                 }
 328                                                         } else if (last_pull_was_ours === false) {  // O point.
 329                                                                 ++p.offensive_points_completed;
 330                                                                 if (type === 'goal') {
 331                                                                         ++p.offensive_points_won;
 332                                                                 }
 333                                                         }
 334                                                 }
 335                                         }
 336                                 }
 337
 338                                 if (keep) {
 339                                         if (type !== 'stoppage') {
 340                                                 // Update globals.
 341                                                 ++globals.points_played;
 342                                                 if (last_pull_was_ours === true) {  // D point.
 343                                                         ++globals.defensive_points_completed;
 344                                                         if (type === 'goal') {
 345                                                                 ++globals.defensive_points_won;
 346                                                         }
 347                                                 } else if (last_pull_was_ours === false) {  // O point.
 348                                                         ++globals.offensive_points_completed;
 349                                                         if (type === 'goal') {
 350                                                                 ++globals.offensive_points_won;
 351                                                         }
 352                                                 }
 353                                         }
 354                                         if (live_since !== null) {
 355                                                 globals.playing_time_ms += t - live_since;
 356                                                 if (offense === true) {
 357                                                         globals.offensive_playing_time_ms += t - live_since;
 358                                                 } else if (offense === false) {
 359                                                         globals.defensive_playing_time_ms += t - live_since;
 360                                                 }
 361                                         }
 362                                 }
 363
 364                                 live_since = null;
 365                         }
 366
 367                         // Score management
 368                         if (type === 'goal') {
 369                                 ++our_score;
 370                         } else if (type === 'their_goal') {
 371                                 ++their_score;
 372                         }
 373
 374                         // Point count management
 375                         if (p !== undefined && type !== 'out' && p.last_point_seen !== point_num) {
 376                                 if (keep) {
 377                                         p.last_point_seen = point_num;
 378                                         ++p.points_played;
 379                                 }
 380                         }
 381                         if (type === 'goal' || type === 'their_goal') {
 382                                 ++point_num;
 383                                 last_goal = t;
 384                         }
 385                         if (type !== 'out' && game_started === null) {
 386                                 game_started = t;
 387                         }
 388
 389                         // Pull management
 390                         if (type === 'pull') {
 391                                 puller = e['player'];
 392                                 pull_started = t;
 393                                 if (keep) ++p.pulls;
 394                         } else if (type === 'in' || type === 'out' || type === 'stoppage' || type === 'restart' || type === 'unknown' || type === 'set_defense' || type === 'set_offense') {
 395                                 // No effect on pull.
 396                         } else if (type === 'pull_landed' && puller !== null) {
 397                                 if (keep) players[puller].pull_times.push(t - pull_started);
 398                         } else if (type === 'pull_oob' && puller !== null) {
 399                                 if (keep) ++players[puller].oob_pulls;
 400                         } else {
 401                                 // Not pulling (if there was one, we never recorded its outcome, but still count it).
 402                                 puller = pull_started = null;
 403                         }
 404
 405                         // Offense/defense management
 406                         let last_offense = offense;
 407                         if (type === 'set_defense' || type === 'goal' || type === 'throwaway' || type === 'drop' || type === 'was_d' || type === 'stallout') {
 408                                 offense = false;
 409                         } else if (type === 'set_offense' || type === 'their_goal' || type === 'their_throwaway' || type === 'defense' || type === 'interception') {
 410                                 offense = true;
 411                         }
 412                         if (last_offense !== offense && live_since !== null) {
 413                                 // Switched offense/defense status, so attribute this drive as needed,
 414                                 // and update live_since to take that into account.
 415                                 if (keep) {
 416                                         for (const [q,p] of Object.entries(players)) {
 417                                                 if (p.on_field_since === null) {
 418                                                         continue;
 419                                                 }
 420                                                 attribute_player_time(p, t, live_since, last_offense);
 421                                         }
 422                                         globals.playing_time_ms += t - live_since;
 423                                         if (offense === true) {
 424                                                 globals.offensive_playing_time_ms += t - live_since;
 425                                         } else if (offense === false) {
 426                                                 globals.defensive_playing_time_ms += t - live_since;
 427                                         }
 428                                 }
 429                                 live_since = t;
 430                         }
 431
 432                         if (type === 'pull') {
 433                                 last_pull_was_ours = true;
 434                         } else if (type === 'their_pull') {
 435                                 last_pull_was_ours = false;
 436                         } else if (type === 'set_offense' && last_pull_was_ours === null) {
 437                                 // set_offense could either be “changed to offense for some reason
 438                                 // we could not express”, or “we started in the middle of a point,
 439                                 // and we are offense”. We assume that if we already saw the pull,
 440                                 // it's the former, and if not, it's the latter; thus, the === null
 441                                 // test above. (It could also be “we set offense before the pull,
 442                                 // so that we get the right button enabled”, in which case it will
 443                                 // be overwritten by the next pull/their_pull event anyway.)
 444                                 last_pull_was_ours = false;
 445                         } else if (type === 'set_defense' && last_pull_was_ours === null) {
 446                                 // Similar.
 447                                 last_pull_was_ours = true;
 448                         } else if (type === 'goal' || type === 'their_goal') {
 449                                 last_pull_was_ours = null;
 450                         }
 451
 452                         // Formation management
 453                         if (type === 'formation_offense' || type === 'formation_defense') {
 454                                 let id = e.formation === null ? 0 : e.formation;
 455                                 let for_offense = (type === 'formation_offense');
 456                                 if (offense === for_offense) {
 457                                         formations_used_this_point.add(id);
 458                                 } else if (for_offense) {
 459                                         pending_offensive_formation = id;
 460                                 } else {
 461                                         pending_defensive_formation = id;
 462                                 }
 463                                 if (for_offense) {
 464                                         last_offensive_formation = id;
 465                                 } else {
 466                                         last_defensive_formation = id;
 467                                 }
 468                         } else if (last_offense !== offense) {
 469                                 if (offense === true && pending_offensive_formation !== null) {
 470                                         formations_used_this_point.add(pending_offensive_formation);
 471                                         pending_offensive_formation = null;
 472                                 } else if (offense === false && pending_defensive_formation !== null) {
 473                                         formations_used_this_point.add(pending_defensive_formation);
 474                                         pending_defensive_formation = null;
 475                                 } else if (offense === true && last_defensive_formation !== null) {
 476                                         if (should_reuse_last_formation(match['events'], t)) {
 477                                                 formations_used_this_point.add(last_defensive_formation);
 478                                         }
 479                                 } else if (offense === false && last_offensive_formation !== null) {
 480                                         if (should_reuse_last_formation(match['events'], t)) {
 481                                                 formations_used_this_point.add(last_offensive_formation);
 482                                         }
 483                                 }
 484                         }
 485
 486                         // Event management
 487                         if (type === 'catch' || type === 'goal') {
 488                                 if (handler !== null) {
 489                                         if (keep) {
 490                                                 ++players[handler].num_throws;
 491                                                 ++p.catches;
 492                                         }
 493                                 }
 494
 495                                 if (keep) ++p.touches;
 496                                 if (type === 'goal') {
 497                                         if (keep) {
 498                                                 if (prev_handler !== null) {
 499                                                         ++players[prev_handler].hockey_assists;
 500                                                 }
 501                                                 if (handler !== null) {
 502                                                         ++players[handler].assists;
 503                                                 }
 504                                                 ++p.goals;
 505                                         }
 506                                         handler = prev_handler = null;
 507                                 } else {
 508                                         // Update hold history.
 509                                         prev_handler = handler;
 510                                         handler = e['player'];
 511                                 }
 512                         } else if (type === 'throwaway') {
 513                                 if (keep) {
 514                                         ++p.num_throws;
 515                                         ++p.throwaways;
 516                                 }
 517                                 handler = prev_handler = null;
 518                         } else if (type === 'drop') {
 519                                 if (keep) ++p.drops;
 520                                 handler = prev_handler = null;
 521                         } else if (type === 'stallout') {
 522                                 if (keep) ++p.stallouts;
 523                                 handler = prev_handler = null;
 524                         } else if (type === 'was_d') {
 525                                 if (keep) ++p.was_ds;
 526                                 handler = prev_handler = null;
 527                         } else if (type === 'defense') {
 528                                 if (keep) ++p.defenses;
 529                         } else if (type === 'interception') {
 530                                 if (keep) {
 531                                         ++p.interceptions;
 532                                         ++p.defenses;
 533                                         ++p.touches;
 534                                 }
 535                                 prev_handler = null;
 536                                 handler = e['player'];
 537                         } else if (type === 'offensive_soft_plus' || type === 'offensive_soft_minus' || type === 'defensive_soft_plus' || type === 'defensive_soft_minus') {
 538                                 if (keep) ++p[type];
 539                         } else if (type !== 'in' && type !== 'out' && type !== 'pull' &&
 540                                    type !== 'their_goal' && type !== 'stoppage' && type !== 'restart' && type !== 'unknown' &&
 541                                    type !== 'set_defense' && type !== 'goal' && type !== 'throwaway' &&
 542                                    type !== 'drop' && type !== 'was_d' && type !== 'stallout' && type !== 'set_offense' && type !== 'their_goal' &&
 543                                    type !== 'pull' && type !== 'pull_landed' && type !== 'pull_oob' && type !== 'their_pull' &&
 544                                    type !== 'their_throwaway' && type !== 'defense' && type !== 'interception' &&
 545                                    type !== 'formation_offense' && type !== 'formation_defense') {
 546                                 console.log("Unknown event:", e);
 547                         }
 548
 549                         if (type === 'goal' || type === 'their_goal') {
 550                                 formations_used_this_point.clear();
 551                         }
 552                 }
 553
 554                 // Add field time for all players still left at match end.
 555                 const keep = keep_event(players, formations_used_this_point, filters);
 556                 if (keep) {
 557                         for (const [q,p] of Object.entries(players)) {
 558                                 if (p.on_field_since !== null && last_goal !== null) {
 559                                         p.field_time_ms += last_goal - p.on_field_since;
 560                                 }
 561                         }
 562                         if (game_started !== null && last_goal !== null) {
 563                                 globals.field_time_ms += last_goal - game_started;
 564                         }
 565                         if (live_since !== null && last_goal !== null) {
 566                                 globals.playing_time_ms += last_goal - live_since;
 567                                 if (offense === true) {
 568                                         globals.offensive_playing_time_ms += last_goal - live_since;
 569                                 } else if (offense === false) {
 570                                         globals.defensive_playing_time_ms += last_goal - live_since;
 571                                 }
 572                         }
 573                 }
 574         }
 575
 576         let chosen_category = get_chosen_category();
 577         write_main_menu(chosen_category);
 578
 579         let rows = [];
 580         if (chosen_category === 'general') {
 581                 rows = make_table_general(players);
 582         } else if (chosen_category === 'offense') {
 583                 rows = make_table_offense(players);
 584         } else if (chosen_category === 'defense') {
 585                 rows = make_table_defense(players);
 586         } else if (chosen_category === 'playing_time') {
 587                 rows = make_table_playing_time(players);
 588         } else if (chosen_category === 'per_point') {
 589                 rows = make_table_per_point(players);
 590         }
 591         document.getElementById('stats').replaceChildren(...rows);
 592 }
 593
 594 function get_chosen_category() {
 595         if (window.location.hash === '#offense') {
 596                 return 'offense';
 597         } else if (window.location.hash === '#defense') {
 598                 return 'defense';
 599         } else if (window.location.hash === '#playing_time') {
 600                 return 'playing_time';
 601         } else if (window.location.hash === '#per_point') {
 602                 return 'per_point';
 603         } else {
 604                 return 'general';
 605         }
 606 }
 607
 608 function write_main_menu(chosen_category) {
 609         let elems = [];
 610         if (chosen_category === 'general') {
 611                 let span = document.createElement('span');
 612                 span.innerText = 'General';
 613                 elems.push(span);
 614         } else {
 615                 let a = document.createElement('a');
 616                 a.appendChild(document.createTextNode('General'));
 617                 a.setAttribute('href', '#general');
 618                 elems.push(a);
 619         }
 620
 621         if (chosen_category === 'offense') {
 622                 let span = document.createElement('span');
 623                 span.innerText = 'Offense';
 624                 elems.push(span);
 625         } else {
 626                 let a = document.createElement('a');
 627                 a.appendChild(document.createTextNode('Offense'));
 628                 a.setAttribute('href', '#offense');
 629                 elems.push(a);
 630         }
 631
 632         if (chosen_category === 'defense') {
 633                 let span = document.createElement('span');
 634                 span.innerText = 'Defense';
 635                 elems.push(span);
 636         } else {
 637                 let a = document.createElement('a');
 638                 a.appendChild(document.createTextNode('Defense'));
 639                 a.setAttribute('href', '#defense');
 640                 elems.push(a);
 641         }
 642
 643         if (chosen_category === 'playing_time') {
 644                 let span = document.createElement('span');
 645                 span.innerText = 'Playing time';
 646                 elems.push(span);
 647         } else {
 648                 let a = document.createElement('a');
 649                 a.appendChild(document.createTextNode('Playing time'));
 650                 a.setAttribute('href', '#playing_time');
 651                 elems.push(a);
 652         }
 653
 654         if (chosen_category === 'per_point') {
 655                 let span = document.createElement('span');
 656                 span.innerText = 'Per point';
 657                 elems.push(span);
 658         } else {
 659                 let a = document.createElement('a');
 660                 a.appendChild(document.createTextNode('Per point'));
 661                 a.setAttribute('href', '#per_point');
 662                 elems.push(a);
 663         }
 664
 665         document.getElementById('mainmenu').replaceChildren(...elems);
 666 }
 667
 668 // https://en.wikipedia.org/wiki/1.96#History
 669 const z = 1.959964;
 670
 671 const ci_width = 100;
 672 const ci_height = 20;
 673
 674 function make_binomial_ci(val, num, z) {
 675         let avg = val / num;
 676
 677         // https://en.wikipedia.org/wiki/Binomial_proportion_confidence_interval#Wilson_score_interval
 678         let low  = (avg + z*z/(2*num) - z * Math.sqrt(avg * (1.0 - avg) / num + z*z/(4*num*num))) / (1 + z*z/num);
 679         let high = (avg + z*z/(2*num) + z * Math.sqrt(avg * (1.0 - avg) / num + z*z/(4*num*num))) / (1 + z*z/num);
 680
 681         // Fix the signs so that we don't get -0.00.
 682         low = Math.max(low, 0.0);
 683         return {
 684                 'val': avg,
 685                 'lower_ci': low,
 686                 'upper_ci': high,
 687                 'min': 0.0,
 688                 'max': 1.0,
 689         };
 690 }
 691
 692 // These can only happen once per point, but you get -1 and +1
 693 // instead of 0 and +1. After we rewrite to 0 and 1, it's a binomial,
 694 // and then we can rewrite back.
 695 function make_efficiency_ci(points_won, points_completed, z)
 696 {
 697         let ci = make_binomial_ci(points_won, points_completed, z);
 698         ci.val = 2.0 * ci.val - 1.0;
 699         ci.lower_ci = 2.0 * ci.lower_ci - 1.0;
 700         ci.upper_ci = 2.0 * ci.upper_ci - 1.0;
 701         ci.min = -1.0;
 702         ci.max = 1.0;
 703         ci.desired = 0.0;  // Desired = positive efficiency.
 704         return ci;
 705 }
 706
 707 // Ds, throwaways and drops can happen multiple times per point,
 708 // so they are Poisson distributed.
 709 //
 710 // Modified Wald (recommended by http://www.ine.pt/revstat/pdf/rs120203.pdf
 711 // since our rates are definitely below 2 per point).
 712 function make_poisson_ci(val, num, z, inverted)
 713 {
 714         let low  = (val == 0) ? 0.0 : ((val - 0.5) - Math.sqrt(val - 0.5)) / num;
 715         let high = (val == 0) ? -Math.log(0.025) / num : ((val + 0.5) + Math.sqrt(val + 0.5)) / num;
 716
 717         // Fix the signs so that we don't get -0.00.
 718         low = Math.max(low, 0.0);
 719
 720         // The display range of 0 to 0.25 is fairly arbitrary. So is the desired 0.05 per point.
 721         let avg = val / num;
 722         return {
 723                 'val': avg,
 724                 'lower_ci': low,
 725                 'upper_ci': high,
 726                 'min': 0.0,
 727                 'max': 0.25,
 728                 'desired': 0.05,
 729                 'inverted': inverted,
 730         };
 731 }
 732
 733 function make_table_general(players) {
 734         let rows = [];
 735         {
 736                 let header = document.createElement('tr');
 737                 add_th(header, 'Player');
 738                 add_th(header, '+/-');
 739                 add_th(header, 'Soft +/-');
 740                 add_th(header, 'O efficiency');
 741                 add_th(header, 'D efficiency');
 742                 add_th(header, 'Points played');
 743                 rows.push(header);
 744         }
 745
 746         for (const [q,p] of get_sorted_players(players)) {
 747                 if (q === 'globals') continue;
 748                 let row = document.createElement('tr');
 749                 let pm = p.goals + p.assists + p.hockey_assists + p.defenses - p.throwaways - p.drops - p.was_ds - p.stallouts;
 750                 let soft_pm = p.offensive_soft_plus + p.defensive_soft_plus - p.offensive_soft_minus - p.defensive_soft_minus;
 751                 let o_efficiency = make_efficiency_ci(p.offensive_points_won, p.offensive_points_completed, z);
 752                 let d_efficiency = make_efficiency_ci(p.defensive_points_won, p.defensive_points_completed, z);
 753                 let name = add_3cell(row, p.name, 'name');  // TODO: number?
 754                 add_3cell(row, pm > 0 ? ('+' + pm) : pm);
 755                 add_3cell(row, soft_pm > 0 ? ('+' + soft_pm) : soft_pm);
 756                 add_3cell_ci(row, o_efficiency);
 757                 add_3cell_ci(row, d_efficiency);
 758                 add_3cell(row, p.points_played);
 759                 row.dataset.player = q;
 760                 rows.push(row);
 761         }
 762
 763         // Globals.
 764         let globals = players['globals'];
 765         let o_efficiency = make_efficiency_ci(globals.offensive_points_won, globals.offensive_points_completed, z);
 766         let d_efficiency = make_efficiency_ci(globals.defensive_points_won, globals.defensive_points_completed, z);
 767         let row = document.createElement('tr');
 768         add_3cell(row, '');
 769         add_3cell(row, '');
 770         add_3cell(row, '');
 771         add_3cell_ci(row, o_efficiency);
 772         add_3cell_ci(row, d_efficiency);
 773         add_3cell(row, globals.points_played);
 774         rows.push(row);
 775
 776         return rows;
 777 }
 778
 779 function make_table_offense(players) {
 780         let rows = [];
 781         {
 782                 let header = document.createElement('tr');
 783                 add_th(header, 'Player');
 784                 add_th(header, 'Goals');
 785                 add_th(header, 'Assists');
 786                 add_th(header, 'Hockey assists');
 787                 add_th(header, 'Throws');
 788                 add_th(header, 'Throwaways');
 789                 add_th(header, '%OK');
 790                 add_th(header, 'Catches');
 791                 add_th(header, 'Drops');
 792                 add_th(header, 'D-ed');
 793                 add_th(header, '%OK');
 794                 add_th(header, 'Stalls');
 795                 add_th(header, 'Soft +/-', 6);
 796                 rows.push(header);
 797         }
 798
 799         let num_throws = 0;
 800         let throwaways = 0;
 801         let catches = 0;
 802         let drops = 0;
 803         let was_ds = 0;
 804         let stallouts = 0;
 805         for (const [q,p] of get_sorted_players(players)) {
 806                 if (q === 'globals') continue;
 807                 let throw_ok = make_binomial_ci(p.num_throws - p.throwaways, p.num_throws, z);
 808                 let catch_ok = make_binomial_ci(p.catches, p.catches + p.drops + p.was_ds, z);
 809
 810                 throw_ok.format = 'percentage';
 811                 catch_ok.format = 'percentage';
 812
 813                 // Desire at least 90% percentage. Fairly arbitrary.
 814                 throw_ok.desired = 0.9;
 815                 catch_ok.desired = 0.9;
 816
 817                 let row = document.createElement('tr');
 818                 add_3cell(row, p.name, 'name');  // TODO: number?
 819                 add_3cell(row, p.goals);
 820                 add_3cell(row, p.assists);
 821                 add_3cell(row, p.hockey_assists);
 822                 add_3cell(row, p.num_throws);
 823                 add_3cell(row, p.throwaways);
 824                 add_3cell_ci(row, throw_ok);
 825                 add_3cell(row, p.catches);
 826                 add_3cell(row, p.drops);
 827                 add_3cell(row, p.was_ds);
 828                 add_3cell_ci(row, catch_ok);
 829                 add_3cell(row, p.stallouts);
 830                 add_3cell(row, '+' + p.offensive_soft_plus);
 831                 add_3cell(row, '-' + p.offensive_soft_minus);
 832                 row.dataset.player = q;
 833                 rows.push(row);
 834
 835                 num_throws += p.num_throws;
 836                 throwaways += p.throwaways;
 837                 catches += p.catches;
 838                 drops += p.drops;
 839                 was_ds += p.was_ds;
 840                 stallouts += p.stallouts;
 841         }
 842
 843         // Globals.
 844         let throw_ok = make_binomial_ci(num_throws - throwaways, num_throws, z);
 845         let catch_ok = make_binomial_ci(catches, catches + drops + was_ds, z);
 846         throw_ok.format = 'percentage';
 847         catch_ok.format = 'percentage';
 848         throw_ok.desired = 0.9;
 849         catch_ok.desired = 0.9;
 850
 851         let row = document.createElement('tr');
 852         add_3cell(row, '');
 853         add_3cell(row, '');
 854         add_3cell(row, '');
 855         add_3cell(row, '');
 856         add_3cell(row, num_throws);
 857         add_3cell(row, throwaways);
 858         add_3cell_ci(row, throw_ok);
 859         add_3cell(row, catches);
 860         add_3cell(row, drops);
 861         add_3cell(row, was_ds);
 862         add_3cell_ci(row, catch_ok);
 863         add_3cell(row, stallouts);
 864         add_3cell(row, '');
 865         add_3cell(row, '');
 866         rows.push(row);
 867
 868         return rows;
 869 }
 870
 871 function make_table_defense(players) {
 872         let rows = [];
 873         {
 874                 let header = document.createElement('tr');
 875                 add_th(header, 'Player');
 876                 add_th(header, 'Ds');
 877                 add_th(header, 'Pulls');
 878                 add_th(header, 'OOB pulls');
 879                 add_th(header, 'OOB%');
 880                 add_th(header, 'Avg. hang time (IB)');
 881                 add_th(header, 'Soft +/-', 6);
 882                 rows.push(header);
 883         }
 884         for (const [q,p] of get_sorted_players(players)) {
 885                 if (q === 'globals') continue;
 886                 let sum_time = 0;
 887                 for (const t of p.pull_times) {
 888                         sum_time += t;
 889                 }
 890                 let avg_time = 1e-3 * sum_time / (p.pulls - p.oob_pulls);
 891                 let oob_pct = 100 * p.oob_pulls / p.pulls;
 892
 893                 let ci_oob = make_binomial_ci(p.oob_pulls, p.pulls, z);
 894                 ci_oob.format = 'percentage';
 895                 ci_oob.desired = 0.2;  // Arbitrary.
 896                 ci_oob.inverted = true;
 897
 898                 let row = document.createElement('tr');
 899                 add_3cell(row, p.name, 'name');  // TODO: number?
 900                 add_3cell(row, p.defenses);
 901                 add_3cell(row, p.pulls);
 902                 add_3cell(row, p.oob_pulls);
 903                 add_3cell_ci(row, ci_oob);
 904                 if (p.pulls > p.oob_pulls) {
 905                         add_3cell(row, avg_time.toFixed(1) + ' sec');
 906                 } else {
 907                         add_3cell(row, 'N/A');
 908                 }
 909                 add_3cell(row, '+' + p.defensive_soft_plus);
 910                 add_3cell(row, '-' + p.defensive_soft_minus);
 911                 row.dataset.player = q;
 912                 rows.push(row);
 913         }
 914         return rows;
 915 }
 916
 917 function make_table_playing_time(players) {
 918         let rows = [];
 919         {
 920                 let header = document.createElement('tr');
 921                 add_th(header, 'Player');
 922                 add_th(header, 'Points played');
 923                 add_th(header, 'Time played');
 924                 add_th(header, 'O time');
 925                 add_th(header, 'D time');
 926                 add_th(header, 'Time on field');
 927                 add_th(header, 'O points');
 928                 add_th(header, 'D points');
 929                 rows.push(header);
 930         }
 931
 932         for (const [q,p] of get_sorted_players(players)) {
 933                 if (q === 'globals') continue;
 934                 let row = document.createElement('tr');
 935                 add_3cell(row, p.name, 'name');  // TODO: number?
 936                 add_3cell(row, p.points_played);
 937                 add_3cell(row, Math.floor(p.playing_time_ms / 60000) + ' min');
 938                 add_3cell(row, Math.floor(p.offensive_playing_time_ms / 60000) + ' min');
 939                 add_3cell(row, Math.floor(p.defensive_playing_time_ms / 60000) + ' min');
 940                 add_3cell(row, Math.floor(p.field_time_ms / 60000) + ' min');
 941                 add_3cell(row, p.offensive_points_completed);
 942                 add_3cell(row, p.defensive_points_completed);
 943                 row.dataset.player = q;
 944                 rows.push(row);
 945         }
 946
 947         // Globals.
 948         let globals = players['globals'];
 949         let row = document.createElement('tr');
 950         add_3cell(row, '');
 951         add_3cell(row, globals.points_played);
 952         add_3cell(row, Math.floor(globals.playing_time_ms / 60000) + ' min');
 953         add_3cell(row, Math.floor(globals.offensive_playing_time_ms / 60000) + ' min');
 954         add_3cell(row, Math.floor(globals.defensive_playing_time_ms / 60000) + ' min');
 955         add_3cell(row, Math.floor(globals.field_time_ms / 60000) + ' min');
 956         add_3cell(row, globals.offensive_points_completed);
 957         add_3cell(row, globals.defensive_points_completed);
 958         rows.push(row);
 959
 960         return rows;
 961 }
 962
 963 function make_table_per_point(players) {
 964         let rows = [];
 965         {
 966                 let header = document.createElement('tr');
 967                 add_th(header, 'Player');
 968                 add_th(header, 'Goals');
 969                 add_th(header, 'Assists');
 970                 add_th(header, 'Hockey assists');
 971                 add_th(header, 'Ds');
 972                 add_th(header, 'Throwaways');
 973                 add_th(header, 'Recv. errors');
 974                 add_th(header, 'Touches');
 975                 rows.push(header);
 976         }
 977
 978         let goals = 0;
 979         let assists = 0;
 980         let hockey_assists = 0;
 981         let defenses = 0;
 982         let throwaways = 0;
 983         let receiver_errors = 0;
 984         let touches = 0;
 985         for (const [q,p] of get_sorted_players(players)) {
 986                 if (q === 'globals') continue;
 987
 988                 // Can only happen once per point, so these are binomials.
 989                 let ci_goals = make_binomial_ci(p.goals, p.points_played, z);
 990                 let ci_assists = make_binomial_ci(p.assists, p.points_played, z);
 991                 let ci_hockey_assists = make_binomial_ci(p.hockey_assists, p.points_played, z);
 992                 // Arbitrarily desire at least 10% (not everybody can score or assist).
 993                 ci_goals.desired = 0.1;
 994                 ci_assists.desired = 0.1;
 995                 ci_hockey_assists.desired = 0.1;
 996
 997                 let row = document.createElement('tr');
 998                 add_3cell(row, p.name, 'name');  // TODO: number?
 999                 add_3cell_ci(row, ci_goals);
1000                 add_3cell_ci(row, ci_assists);
1001                 add_3cell_ci(row, ci_hockey_assists);
1002                 add_3cell_ci(row, make_poisson_ci(p.defenses, p.points_played, z));
1003                 add_3cell_ci(row, make_poisson_ci(p.throwaways, p.points_played, z, true));
1004                 add_3cell_ci(row, make_poisson_ci(p.drops + p.was_ds, p.points_played, z, true));
1005                 if (p.points_played > 0) {
1006                         add_3cell(row, p.touches == 0 ? 0 : (p.touches / p.points_played).toFixed(2));
1007                 } else {
1008                         add_3cell(row, 'N/A');
1009                 }
1010                 row.dataset.player = q;
1011                 rows.push(row);
1012
1013                 goals += p.goals;
1014                 assists += p.assists;
1015                 hockey_assists += p.hockey_assists;
1016                 defenses += p.defenses;
1017                 throwaways += p.throwaways;
1018                 receiver_errors += p.drops + p.was_ds;
1019                 touches += p.touches;
1020         }
1021
1022         // Globals.
1023         let globals = players['globals'];
1024         let row = document.createElement('tr');
1025         add_3cell(row, '');
1026         if (globals.points_played > 0) {
1027                 add_3cell_with_filler_ci(row, goals == 0 ? 0 : (goals / globals.points_played).toFixed(2));
1028                 add_3cell_with_filler_ci(row, assists == 0 ? 0 : (assists / globals.points_played).toFixed(2));
1029                 add_3cell_with_filler_ci(row, hockey_assists == 0 ? 0 : (hockey_assists / globals.points_played).toFixed(2));
1030                 add_3cell_with_filler_ci(row, defenses == 0 ? 0 : (defenses / globals.points_played).toFixed(2));
1031                 add_3cell_with_filler_ci(row, throwaways == 0 ? 0 : (throwaways / globals.points_played).toFixed(2));
1032                 add_3cell_with_filler_ci(row, receiver_errors == 0 ? 0 : (receiver_errors / globals.points_played).toFixed(2));
1033                 add_3cell(row, touches == 0 ? 0 : (touches / globals.points_played).toFixed(2));
1034         } else {
1035                 add_3cell_with_filler_ci(row, 'N/A');
1036                 add_3cell_with_filler_ci(row, 'N/A');
1037                 add_3cell_with_filler_ci(row, 'N/A');
1038                 add_3cell_with_filler_ci(row, 'N/A');
1039                 add_3cell_with_filler_ci(row, 'N/A');
1040                 add_3cell_with_filler_ci(row, 'N/A');
1041                 add_3cell(row, 'N/A');
1042         }
1043         rows.push(row);
1044
1045         return rows;
1046 }
1047
1048 function open_filter_menu() {
1049         document.getElementById('filter-submenu').style.display = 'none';
1050
1051         let menu = document.getElementById('filter-add-menu');
1052         menu.style.display = 'block';
1053         menu.replaceChildren();
1054
1055         // Place the menu directly under the “click to add” label;
1056         // we don't anchor it since that label will move around
1057         // and the menu shouldn't.
1058         let rect = document.getElementById('filter-click-to-add').getBoundingClientRect();
1059         menu.style.left = rect.left + 'px';
1060         menu.style.top = (rect.bottom + 10) + 'px';
1061
1062         add_menu_item(menu, 0, 'match', 'Match (any)');
1063         add_menu_item(menu, 1, 'player_any', 'Player on field (any)');
1064         add_menu_item(menu, 2, 'player_all', 'Player on field (all)');
1065         add_menu_item(menu, 3, 'formation_offense', 'Offense played (any)');
1066         add_menu_item(menu, 4, 'formation_defense', 'Defense played (any)');
1067 }
1068
1069 function add_menu_item(menu, menu_idx, filter_type, title) {
1070         let item = document.createElement('div');
1071         item.classList.add('option');
1072         item.appendChild(document.createTextNode(title));
1073
1074         let arrow = document.createElement('div');
1075         arrow.classList.add('arrow');
1076         arrow.textContent = '▸';
1077         item.appendChild(arrow);
1078
1079         menu.appendChild(item);
1080
1081         item.addEventListener('click', (e) => { show_submenu(menu_idx, null, filter_type); });
1082 }
1083
1084 function show_submenu(menu_idx, pill, filter_type) {
1085         let submenu = document.getElementById('filter-submenu');
1086         let subitems = [];
1087         const filter = find_filter(filter_type);
1088
1089         let choices = [];
1090         if (filter_type === 'match') {
1091                 for (const match of global_json['matches']) {
1092                         choices.push({
1093                                 'title': match['description'],
1094                                 'id': match['match_id']
1095                         });
1096                 }
1097         } else if (filter_type === 'player_any' || filter_type === 'player_all') {
1098                 for (const player of global_json['players']) {
1099                         choices.push({
1100                                 'title': player['name'],
1101                                 'id': player['player_id']
1102                         });
1103                 }
1104         } else if (filter_type === 'formation_offense') {
1105                 choices.push({
1106                         'title': '(None/unknown)',
1107                         'id': 0,
1108                 });
1109                 for (const formation of global_json['formations']) {
1110                         if (formation['offense']) {
1111                                 choices.push({
1112                                         'title': formation['name'],
1113                                         'id': formation['formation_id']
1114                                 });
1115                         }
1116                 }
1117         } else if (filter_type === 'formation_defense') {
1118                 choices.push({
1119                         'title': '(None/unknown)',
1120                         'id': 0,
1121                 });
1122                 for (const formation of global_json['formations']) {
1123                         if (!formation['offense']) {
1124                                 choices.push({
1125                                         'title': formation['name'],
1126                                         'id': formation['formation_id']
1127                                 });
1128                         }
1129                 }
1130         }
1131
1132         for (const choice of choices) {
1133                 let label = document.createElement('label');
1134
1135                 let subitem = document.createElement('div');
1136                 subitem.classList.add('option');
1137
1138                 let check = document.createElement('input');
1139                 check.setAttribute('type', 'checkbox');
1140                 check.setAttribute('id', 'choice' + choice.id);
1141                 if (filter !== null && filter.elements.has(choice.id)) {
1142                         check.setAttribute('checked', 'checked');
1143                 }
1144                 check.addEventListener('change', (e) => { checkbox_changed(e, filter_type, choice.id); });
1145
1146                 subitem.appendChild(check);
1147                 subitem.appendChild(document.createTextNode(choice.title));
1148
1149                 label.appendChild(subitem);
1150                 subitems.push(label);
1151         }
1152         submenu.replaceChildren(...subitems);
1153         submenu.style.display = 'block';
1154
1155         if (pill !== null) {
1156                 let rect = pill.getBoundingClientRect();
1157                 submenu.style.top = (rect.bottom + 10) + 'px';
1158                 submenu.style.left = rect.left + 'px';
1159         } else {
1160                 // Position just outside the selected menu.
1161                 let rect = document.getElementById('filter-add-menu').getBoundingClientRect();
1162                 submenu.style.top = (rect.top + menu_idx * 35) + 'px';
1163                 submenu.style.left = (rect.right - 1) + 'px';
1164         }
1165 }
1166
1167 // Find the right filter, if it exists.
1168 function find_filter(filter_type) {
1169         for (let f of global_filters) {
1170                 if (f.type === filter_type) {
1171                         return f;
1172                 }
1173         }
1174         return null;
1175 }
1176
1177 function checkbox_changed(e, filter_type, id) {
1178         let filter = find_filter(filter_type);
1179         if (e.target.checked) {
1180                 // See if we must add a new filter to the list.
1181                 if (filter === null) {
1182                         filter = {
1183                                 'type': filter_type,
1184                                 'elements': new Set([ id ]),
1185                         };
1186                         filter.pill = make_filter_pill(filter);
1187                         global_filters.push(filter);
1188                         document.getElementById('filters').appendChild(filter.pill);
1189                 } else {
1190                         filter.elements.add(id);
1191                         let new_pill = make_filter_pill(filter);
1192                         document.getElementById('filters').replaceChild(new_pill, filter.pill);
1193                         filter.pill = new_pill;
1194                 }
1195         } else {
1196                 filter.elements.delete(id);
1197                 if (filter.elements.size === 0) {
1198                         document.getElementById('filters').removeChild(filter.pill);
1199                         global_filters = global_filters.filter(f => f !== filter);
1200                 } else {
1201                         let new_pill = make_filter_pill(filter);
1202                         document.getElementById('filters').replaceChild(new_pill, filter.pill);
1203                         filter.pill = new_pill;
1204                 }
1205         }
1206
1207         process_matches(global_json, global_filters);
1208 }
1209
1210 function make_filter_pill(filter) {
1211         let pill = document.createElement('div');
1212         pill.classList.add('filter-pill');
1213         let text;
1214         if (filter.type === 'match') {
1215                 text = 'Match: ';
1216
1217                 let all_names = [];
1218                 for (const match_id of filter.elements) {
1219                         all_names.push(find_match(match_id)['description']);
1220                 }
1221                 let common_prefix = find_common_prefix_of_all(all_names);
1222                 if (common_prefix !== null) {
1223                         text += common_prefix + '(';
1224                 }
1225
1226                 let first = true;
1227                 let sorted_match_id = Array.from(filter.elements).sort((a, b) => a - b);
1228                 for (const match_id of sorted_match_id) {
1229                         if (!first) {
1230                                 text += ', ';
1231                         }
1232                         let desc = find_match(match_id)['description'];
1233                         if (common_prefix === null) {
1234                                 text += desc;
1235                         } else {
1236                                 text += desc.substr(common_prefix.length);
1237                         }
1238                         first = false;
1239                 }
1240
1241                 if (common_prefix !== null) {
1242                         text += ')';
1243                 }
1244         } else if (filter.type === 'player_any') {
1245                 text = 'Player (any): ';
1246                 let sorted_players = Array.from(filter.elements).sort((a, b) => player_pos(a) - player_pos(b));
1247                 let first = true;
1248                 for (const player_id of sorted_players) {
1249                         if (!first) {
1250                                 text += ', ';
1251                         }
1252                         text += find_player(player_id)['name'];
1253                         first = false;
1254                 }
1255         } else if (filter.type === 'player_all') {
1256                 text = 'Players: ';
1257                 let sorted_players = Array.from(filter.elements).sort((a, b) => player_pos(a) - player_pos(b));
1258                 let first = true;
1259                 for (const player_id of sorted_players) {
1260                         if (!first) {
1261                                 text += ' AND ';
1262                         }
1263                         text += find_player(player_id)['name'];
1264                         first = false;
1265                 }
1266         } else if (filter.type === 'formation_offense' || filter.type === 'formation_defense') {
1267                 const offense = (filter.type === 'formation_offense');
1268                 if (offense) {
1269                         text = 'Offense: ';
1270                 } else {
1271                         text = 'Defense: ';
1272                 }
1273
1274                 let all_names = [];
1275                 for (const formation_id of filter.elements) {
1276                         all_names.push(find_formation(formation_id)['name']);
1277                 }
1278                 let common_prefix = find_common_prefix_of_all(all_names);
1279                 if (common_prefix !== null) {
1280                         text += common_prefix + '(';
1281                 }
1282
1283                 let first = true;
1284                 let sorted_formation_id = Array.from(filter.elements).sort((a, b) => a - b);
1285                 for (const formation_id of sorted_formation_id) {
1286                         if (!first) {
1287                                 text += ', ';
1288                         }
1289                         let desc = find_formation(formation_id)['name'];
1290                         if (common_prefix === null) {
1291                                 text += desc;
1292                         } else {
1293                                 text += desc.substr(common_prefix.length);
1294                         }
1295                         first = false;
1296                 }
1297
1298                 if (common_prefix !== null) {
1299                         text += ')';
1300                 }
1301         }
1302
1303         let text_node = document.createElement('span');
1304         text_node.innerText = text;
1305         text_node.addEventListener('click', (e) => show_submenu(null, pill, filter.type));
1306         pill.appendChild(text_node);
1307
1308         pill.appendChild(document.createTextNode(' '));
1309
1310         let delete_node = document.createElement('span');
1311         delete_node.innerText = '✖';
1312         delete_node.addEventListener('click', (e) => {
1313                 // Delete this filter entirely.
1314                 document.getElementById('filters').removeChild(pill);
1315                 global_filters = global_filters.filter(f => f !== filter);
1316                 process_matches(global_json, global_filters);
1317
1318                 let add_menu = document.getElementById('filter-add-menu');
1319                 let add_submenu = document.getElementById('filter-submenu');
1320                 add_menu.style.display = 'none';
1321                 add_submenu.style.display = 'none';
1322         });
1323         pill.appendChild(delete_node);
1324         pill.style.cursor = 'pointer';
1325
1326         return pill;
1327 }
1328
1329 function find_common_prefix(a, b) {
1330         let ret = '';
1331         for (let i = 0; i < Math.min(a.length, b.length); ++i) {
1332                 if (a[i] === b[i]) {
1333                         ret += a[i];
1334                 } else {
1335                         break;
1336                 }
1337         }
1338         return ret;
1339 }
1340
1341 function find_common_prefix_of_all(values) {
1342         if (values.length < 2) {
1343                 return null;
1344         }
1345         let common_prefix = null;
1346         for (const desc of values) {
1347                 if (common_prefix === null) {
1348                         common_prefix = desc;
1349                 } else {
1350                         common_prefix = find_common_prefix(common_prefix, desc);
1351                 }
1352         }
1353         if (common_prefix.length >= 3) {
1354                 return common_prefix;
1355         } else {
1356                 return null;
1357         }
1358 }
1359
1360 function find_match(match_id) {
1361         for (const match of global_json['matches']) {
1362                 if (match['match_id'] === match_id) {
1363                         return match;
1364                 }
1365         }
1366         return null;
1367 }
1368
1369 function find_formation(formation_id) {
1370         for (const formation of global_json['formations']) {
1371                 if (formation['formation_id'] === formation_id) {
1372                         return formation;
1373                 }
1374         }
1375         return null;
1376 }
1377
1378 function find_player(player_id) {
1379         for (const player of global_json['players']) {
1380                 if (player['player_id'] === player_id) {
1381                         return player;
1382                 }
1383         }
1384         return null;
1385 }
1386
1387 function player_pos(player_id) {
1388         let i = 0;
1389         for (const player of global_json['players']) {
1390                 if (player['player_id'] === player_id) {
1391                         return i;
1392                 }
1393                 ++i;
1394         }
1395         return null;
1396 }
1397
1398 function keep_match(match_id, filters) {
1399         for (const filter of filters) {
1400                 if (filter.type === 'match') {
1401                         return filter.elements.has(match_id);
1402                 }
1403         }
1404         return true;
1405 }
1406
1407 function filter_passes(players, formations_used_this_point, filter) {
1408         if (filter.type === 'player_any') {
1409                 for (const p of Array.from(filter.elements)) {
1410                         if (players[p].on_field_since !== null) {
1411                                 return true;
1412                         }
1413                 }
1414                 return false;
1415         } else if (filter.type === 'player_all') {
1416                 for (const p of Array.from(filter.elements)) {
1417                         if (players[p].on_field_since === null) {
1418                                 return false;
1419                         }
1420                 }
1421                 return true;
1422         } else if (filter.type === 'formation_offense' || filter.type === 'formation_defense') {
1423                 for (const f of Array.from(filter.elements)) {
1424                         if (formations_used_this_point.has(f)) {
1425                                 return true;
1426                         }
1427                 }
1428                 return false;
1429         }
1430         return true;
1431 }
1432
1433 function keep_event(players, formations_used_this_point, filters) {
1434         for (const filter of filters) {
1435                 if (!filter_passes(players, formations_used_this_point, filter)) {
1436                         return false;
1437                 }
1438         }
1439         return true;
1440 }
1441
1442 // Heuristic: If we go at least ten seconds without the possession changing
1443 // or the operator specifying some other formation, we probably play the
1444 // same formation as the last point.
1445 function should_reuse_last_formation(events, t) {
1446         for (const e of events) {
1447                 if (e.t <= t) {
1448                         continue;
1449                 }
1450                 if (e.t > t + 10000) {
1451                         break;
1452                 }
1453                 const type = e.type;
1454                 if (type === 'their_goal' || type === 'goal' ||
1455                     type === 'set_defense' || type === 'set_offense' ||
1456                     type === 'throwaway' || type === 'their_throwaway' ||
1457                     type === 'drop' || type === 'was_d' || type === 'stallout' || type === 'defense' || type === 'interception' ||
1458                     type === 'pull' || type === 'pull_landed' || type === 'pull_oob' || type === 'their_pull' ||
1459                     type === 'formation_offense' || type === 'formation_defense') {
1460                         return false;
1461                 }
1462         }
1463         return true;
1464 }
1465
1466 function possibly_close_menu(e) {
1467         if (e.target.closest('#filter-click-to-add') === null &&
1468             e.target.closest('#filter-add-menu') === null &&
1469             e.target.closest('#filter-submenu') === null &&
1470             e.target.closest('.filter-pill') === null) {
1471                 let add_menu = document.getElementById('filter-add-menu');
1472                 let add_submenu = document.getElementById('filter-submenu');
1473                 add_menu.style.display = 'none';
1474                 add_submenu.style.display = 'none';
1475         }
1476 }
1477
1478 let global_sort = {};
1479
1480 function sort_by(th) {
1481         let tr = th.parentElement;
1482         let child_idx = 0;
1483         for (let column_idx = 0; column_idx < tr.children.length; ++column_idx) {
1484                 let element = tr.children[column_idx];
1485                 if (element === th) {
1486                         ++child_idx;  // Pad.
1487                         break;
1488                 }
1489                 if (element.hasAttribute('colspan')) {
1490                         child_idx += parseInt(element.getAttribute('colspan'));
1491                 } else {
1492                         ++child_idx;
1493                 }
1494         }
1495
1496         global_sort = {};
1497         let table = tr.parentElement;
1498         for (let row_idx = 1; row_idx < table.children.length - 1; ++row_idx) {  // Skip header and globals.
1499                 let row = table.children[row_idx];
1500                 let player = parseInt(row.dataset.player);
1501                 let value = row.children[child_idx].textContent;
1502                 global_sort[player] = value;
1503         }
1504 }
1505
1506 function get_sorted_players(players)
1507 {
1508         let p = Object.entries(players);
1509         if (global_sort.length !== 0) {
1510                 p.sort((a,b) => {
1511                         let ai = parseFloat(global_sort[a[0]]);
1512                         let bi = parseFloat(global_sort[b[0]]);
1513                         if (ai == ai && bi == bi) {
1514                                 return bi - ai;  // Reverse numeric.
1515                         } else if (global_sort[a[0]] < global_sort[b[0]]) {
1516                                 return -1;
1517                         } else if (global_sort[a[0]] > global_sort[b[0]]) {
1518                                 return 1;
1519                         } else {
1520                                 return 0;
1521                         }
1522                 });
1523         }
1524         return p;
1525 }