git.cworth.org Git - lmno.games/blob - empathy/empathy.jsx

   1 const MAX_PROMPT_ITEMS = 20;
   2
   3 function undisplay(element) {
   4   element.style.display="none";
   5 }
   6
   7 function add_message(severity, message) {
   8   message = `<div class="message ${severity}" onclick="undisplay(this)">
   9 <span class="hide-button" onclick="undisplay(this.parentElement)">&times;</span>
  10 ${message}
  11 </div>`;
  12   const message_area = document.getElementById('message-area');
  13   message_area.insertAdjacentHTML('beforeend', message);
  14 }
  15
  16 /*********************************************************
  17  * Handling server-sent event stream                     *
  18  *********************************************************/
  19
  20 const events = new EventSource("events");
  21
  22 events.onerror = function(event) {
  23   if (event.target.readyState === EventSource.CLOSED) {
  24     setTimeout(() => {
  25       add_message("danger", "Connection to server lost.");
  26     }, 1000);
  27   }
  28 };
  29
  30 events.addEventListener("game-info", event => {
  31   const info = JSON.parse(event.data);
  32
  33   window.game.set_game_info(info);
  34 });
  35
  36 events.addEventListener("player-info", event => {
  37   const info = JSON.parse(event.data);
  38
  39   window.game.set_player_info(info);
  40 });
  41
  42 events.addEventListener("player-enter", event => {
  43   const info = JSON.parse(event.data);
  44
  45   window.game.set_other_player_info(info);
  46 });
  47
  48 events.addEventListener("player-exit", event => {
  49   const info = JSON.parse(event.data);
  50
  51   window.game.remove_player(info);
  52 });
  53
  54 events.addEventListener("player-update", event => {
  55   const info = JSON.parse(event.data);
  56
  57   if (info.id === window.game.state.player_info.id)
  58     window.game.set_player_info(info);
  59   else
  60     window.game.set_other_player_info(info);
  61 });
  62
  63 events.addEventListener("game-state", event => {
  64   const state = JSON.parse(event.data);
  65
  66   window.game.reset_game_state();
  67
  68   window.game.set_prompts(state.prompts);
  69
  70   window.game.set_active_prompt(state.active_prompt);
  71
  72   window.game.set_players_answered(state.players_answered);
  73
  74   window.game.set_players_answering(state.players_answering);
  75
  76   window.game.set_answering_idle(state.answering_idle);
  77
  78   window.game.set_end_answers(state.end_answers);
  79
  80   window.game.set_ambiguities(state.ambiguities);
  81
  82   window.game.set_players_judged(state.players_judged);
  83
  84   window.game.set_players_judging(state.players_judging);
  85
  86   window.game.set_judging_idle(state.judging_idle);
  87
  88   window.game.set_end_judging(state.end_judging);
  89
  90   window.game.set_scores(state.scores);
  91
  92   window.game.set_new_game_votes(state.new_game_votes);
  93
  94   window.game.state_ready();
  95 });
  96
  97 events.addEventListener("prompt", event => {
  98   const prompt = JSON.parse(event.data);
  99
 100   window.game.add_or_update_prompt(prompt);
 101 });
 102
 103 events.addEventListener("start", event => {
 104   const prompt = JSON.parse(event.data);
 105
 106   window.game.set_active_prompt(prompt);
 107 });
 108
 109 events.addEventListener("player-answered", event => {
 110   const player = JSON.parse(event.data);
 111
 112   window.game.set_player_answered(player);
 113 });
 114
 115 events.addEventListener("player-answering", event => {
 116   const player = JSON.parse(event.data);
 117
 118   window.game.set_player_answering(player);
 119 });
 120
 121 events.addEventListener("answering-idle", event => {
 122   const value = JSON.parse(event.data);
 123
 124   window.game.set_answering_idle(value);
 125 });
 126
 127 events.addEventListener("vote-end-answers", event => {
 128   const player = JSON.parse(event.data);
 129
 130   window.game.set_player_vote_end_answers(player);
 131 });
 132
 133 events.addEventListener("unvote-end-answers", event => {
 134   const player = JSON.parse(event.data);
 135
 136   window.game.set_player_unvote_end_answers(player);
 137 });
 138
 139 events.addEventListener("ambiguities", event => {
 140   const ambiguities = JSON.parse(event.data);
 141
 142   window.game.set_ambiguities(ambiguities);
 143 });
 144
 145 events.addEventListener("player-judged", event => {
 146   const player = JSON.parse(event.data);
 147
 148   window.game.set_player_judged(player);
 149 });
 150
 151 events.addEventListener("player-judging", event => {
 152   const player = JSON.parse(event.data);
 153
 154   window.game.set_player_judging(player);
 155 });
 156
 157 events.addEventListener("judging-idle", event => {
 158   const value = JSON.parse(event.data);
 159
 160   window.game.set_judging_idle(value);
 161 });
 162
 163 events.addEventListener("vote-end-judging", event => {
 164   const player = JSON.parse(event.data);
 165
 166   window.game.set_player_vote_end_judging(player);
 167 });
 168
 169 events.addEventListener("unvote-end-judging", event => {
 170   const player = JSON.parse(event.data);
 171
 172   window.game.set_player_unvote_end_judging(player);
 173 });
 174
 175 events.addEventListener("scores", event => {
 176   const scores = JSON.parse(event.data);
 177
 178   window.game.set_scores(scores);
 179 });
 180
 181 events.addEventListener("vote-new-game", event => {
 182   const player = JSON.parse(event.data);
 183
 184   window.game.set_player_vote_new_game(player);
 185 });
 186
 187 events.addEventListener("unvote-new-game", event => {
 188   const player = JSON.parse(event.data);
 189
 190   window.game.set_player_unvote_new_game(player);
 191 });
 192
 193 /*********************************************************
 194  * Game and supporting classes                           *
 195  *********************************************************/
 196
 197 function copy_to_clipboard(id)
 198 {
 199   const tmp = document.createElement("input");
 200   tmp.setAttribute("value", document.getElementById(id).innerHTML);
 201   document.body.appendChild(tmp);
 202   tmp.select();
 203   document.execCommand("copy");
 204   document.body.removeChild(tmp);
 205 }
 206
 207 const GameInfo = React.memo(props => {
 208   if (! props.id)
 209     return null;
 210
 211   return (
 212     <div className="game-info">
 213       <span className="game-id">{props.id}</span>
 214       {" "}
 215       Share this link to invite friends:{" "}
 216       <span id="game-share-url">{props.url}</span>
 217       {" "}
 218       <button
 219         className="inline"
 220         onClick={() => copy_to_clipboard('game-share-url')}
 221       >Copy Link</button>
 222     </div>
 223   );
 224 });
 225
 226 const PlayerInfo = React.memo(props => {
 227   if (! props.player.id)
 228     return null;
 229
 230   const all_players = [props.player, ...props.other_players];
 231
 232   const sorted_players = all_players.sort((a,b) => {
 233     return b.score - a.score;
 234   });
 235
 236   const names_and_scores = sorted_players.map(player => {
 237     if (player.score)
 238       return `${player.name} (${player.score})`;
 239     else
 240       return player.name;
 241   }).join(', ');
 242
 243   return (
 244     <div className="player-info">
 245       <span className="players-header">Players: </span>
 246       <span>{names_and_scores}</span>
 247     </div>
 248   );
 249 });
 250
 251 function fetch_method_json(method, api = '', data = {}) {
 252   const response = fetch(api, {
 253     method: method,
 254     headers: {
 255       'Content-Type': 'application/json'
 256     },
 257     body: JSON.stringify(data)
 258   });
 259   return response;
 260 }
 261
 262 function fetch_post_json(api = '', data = {}) {
 263   return fetch_method_json('POST', api, data);
 264 }
 265
 266 async function fetch_put_json(api = '', data = {}) {
 267   return fetch_method_json('PUT', api, data);
 268 }
 269
 270 class CategoryRequest extends React.PureComponent {
 271   constructor(props) {
 272     super(props);
 273     this.category = React.createRef();
 274
 275     this.handle_change = this.handle_change.bind(this);
 276     this.handle_submit = this.handle_submit.bind(this);
 277   }
 278
 279   handle_change(event) {
 280     const category_input = this.category.current;
 281     const category = category_input.value;
 282
 283     const match = category.match(/[0-9]+/);
 284     if (match) {
 285       const num_items = parseInt(match[0], 10);
 286       if (num_items <= MAX_PROMPT_ITEMS)
 287         category_input.setCustomValidity("");
 288     }
 289   }
 290
 291   async handle_submit(event) {
 292     const form = event.currentTarget;
 293     const category_input = this.category.current;
 294     const category = category_input.value;
 295
 296     /* Prevent the default page-changing form-submission behavior. */
 297     event.preventDefault();
 298
 299     const match = category.match(/[0-9]+/);
 300     if (match === null) {
 301       category_input.setCustomValidity("Category must include a number");
 302       form.reportValidity();
 303       return;
 304     }
 305
 306     const num_items = parseInt(match[0], 10);
 307
 308     if (num_items > MAX_PROMPT_ITEMS) {
 309       category_input.setCustomValidity(`Maximum number of items is ${MAX_PROMPT_ITEMS}`);
 310       form.reportValidity();
 311       return;
 312     }
 313
 314     const response = await fetch_post_json("prompts", {
 315       items: num_items,
 316       prompt: category
 317     });
 318
 319     if (response.status === 200) {
 320       const result = await response.json();
 321       if (! result.valid) {
 322         add_message("danger", result.message);
 323         return;
 324       }
 325     } else {
 326       add_message("danger", "An error occurred submitting your category");
 327     }
 328
 329     form.reset();
 330   }
 331
 332   render() {
 333     return (
 334       <div className="category-request">
 335         <h2>Submit a Category</h2>
 336         <p>
 337           Suggest a category to play. Don't forget to include the
 338           number of items for each person to submit.
 339         </p>
 340
 341         <form onSubmit={this.handle_submit} >
 342           <div className="form-field large">
 343             <input
 344               type="text"
 345               id="category"
 346               placeholder="6 things at the beach"
 347               required
 348               autoComplete="off"
 349               onChange={this.handle_change}
 350               ref={this.category}
 351             />
 352           </div>
 353
 354           <div className="form-field large">
 355             <button type="submit">
 356               Send
 357             </button>
 358           </div>
 359
 360         </form>
 361       </div>
 362     );
 363   }
 364 }
 365
 366 const PromptOptions = React.memo(props => {
 367
 368   if (props.prompts.length === 0)
 369     return null;
 370
 371   return (
 372     <div className="prompt-options">
 373       <h2>Vote on Categories</h2>
 374       <p>
 375         Select any categories below that you'd like to play.
 376         You can choose as many as you'd like.
 377       </p>
 378       {props.prompts.map(p => {
 379         return (
 380           <button
 381             className="vote-button"
 382             key={p.id}
 383             onClick={() => fetch_post_json(`vote/${p.id}`) }
 384           >
 385             {p.prompt}
 386             <div className="vote-choices">
 387               {p.votes.map(v => {
 388                 return (
 389                   <div
 390                     key={v}
 391                     className="vote-choice"
 392                   >
 393                     {v}
 394                   </div>
 395                 );
 396               })}
 397             </div>
 398           </button>
 399         );
 400       })}
 401     </div>
 402   );
 403 });
 404
 405 const LetsPlay = React.memo(props => {
 406
 407   const quorum = Math.round((props.num_players + 1) / 2);
 408   const max_votes = props.prompts.reduce(
 409     (max_so_far, v) => Math.max(max_so_far, v.votes.length), 0);
 410
 411   if (max_votes < quorum)
 412     return null;
 413
 414   const candidates = props.prompts.filter(p => p.votes.length >= quorum);
 415   const index = Math.floor(Math.random() * candidates.length);
 416   const winner = candidates[index];
 417
 418   return (
 419     <div className="lets-play">
 420       <h2>Let's Play</h2>
 421       <p>
 422         That should be enough voting. If you're not waiting for any
 423         other players to join, then let's start.
 424       </p>
 425       <button
 426         className="lets-play"
 427         onClick={() => fetch_post_json(`start/${winner.id}`) }
 428       >
 429         Start Game
 430       </button>
 431     </div>
 432   );
 433 });
 434
 435 class Ambiguities extends React.PureComponent {
 436
 437   constructor(props) {
 438     super(props);
 439
 440     const word_sets = props.words.map(word => {
 441       const set = new Set();
 442       set.add(word);
 443       return set;
 444     });
 445
 446     this.state = {
 447       word_sets: word_sets,
 448       selected: null
 449     };
 450
 451     this.submitted = false;
 452     this.judging_sent_recently = false;
 453   }
 454
 455   async handle_submit() {
 456
 457     /* Don't submit a second time. */
 458     if (this.submitted)
 459       return;
 460
 461     const response = await fetch_post_json(
 462       `judged/${this.props.prompt.id}`,{
 463         word_groups: this.state.word_sets.map(set => Array.from(set))
 464       }
 465     );
 466
 467     if (response.status === 200) {
 468       const result = await response.json();
 469       if (! result.valid) {
 470         add_message("danger", result.message);
 471         return;
 472       }
 473     } else {
 474       add_message("danger", "An error occurred submitting the results of your judging");
 475       return;
 476     }
 477
 478     this.submitted = true;
 479   }
 480
 481   handle_click(word) {
 482
 483     /* Let the server know we are doing some judging, (but rate limit
 484      * this so we don't send a "judging" notification more frquently
 485      * than necessary.
 486      */
 487     if (! this.judging_sent_recently) {
 488       fetch_post_json(`judging/${this.props.prompt.id}`);
 489       this.judging_sent_recently = true;
 490       setTimeout(() => { this.judging_sent_recently = false; }, 1000);
 491     }
 492
 493     if (this.state.selected == word) {
 494       /* Second click on same word removes the word from the group. */
 495       const idx = this.state.word_sets.findIndex(s => s.has(word));
 496       const set = this.state.word_sets[idx];
 497       if (set.size === 1) {
 498         /* When the word is already alone, there's nothing to do but
 499          * to un-select it. */
 500         this.setState({
 501           selected: null
 502         });
 503         return;
 504       }
 505
 506       const new_set = new Set([...set].filter(w => w !== word));
 507       this.setState({
 508         selected: null,
 509         word_sets: [...this.state.word_sets.slice(0, idx),
 510                     new_set,
 511                     new Set().add(word),
 512                     ...this.state.word_sets.slice(idx+1)]
 513       });
 514     } else if (this.state.selected) {
 515       /* Click of a second word groups the two together. */
 516       const idx1 = this.state.word_sets.findIndex(s => s.has(this.state.selected));
 517       const idx2 = this.state.word_sets.findIndex(s => s.has(word));
 518       const set1 = this.state.word_sets[idx1];
 519       const set2 = this.state.word_sets[idx2];
 520       const new_set = new Set([...set2, ...set1]);
 521       if (idx1 < idx2) {
 522         this.setState({
 523           selected: null,
 524           word_sets: [...this.state.word_sets.slice(0, idx1),
 525                       ...this.state.word_sets.slice(idx1 + 1, idx2),
 526                       new_set,
 527                       ...this.state.word_sets.slice(idx2 + 1)]
 528         });
 529       } else {
 530         this.setState({
 531           selected: null,
 532           word_sets: [...this.state.word_sets.slice(0, idx2),
 533                       new_set,
 534                       ...this.state.word_sets.slice(idx2 + 1, idx1),
 535                       ...this.state.word_sets.slice(idx1 + 1)]
 536         });
 537       }
 538     } else {
 539       /* First click of a word selects it. */
 540       this.setState({
 541         selected: word
 542       });
 543     }
 544   }
 545
 546   render() {
 547     let move_on_button = null;
 548
 549     if (this.props.idle) {
 550       move_on_button = (
 551         <button
 552           className="vote-button"
 553           onClick={() => fetch_post_json(`end-judging/${this.props.prompt.id}`) }
 554         >
 555           Move On
 556           <div className="vote-choices">
 557             {[...this.props.votes].map(v => {
 558               return (
 559                 <div
 560                   key={v}
 561                   className="vote-choice"
 562                 >
 563                   {v}
 564                   </div>
 565               );
 566             })}
 567           </div>
 568         </button>
 569       );
 570     }
 571
 572     let still_waiting = null;
 573     const judging_players = Object.keys(this.props.players_judging);
 574     if (judging_players.length) {
 575       still_waiting = (
 576         <div>
 577           <p>
 578             Still waiting for the following player
 579             {judging_players.length > 1 ? 's' : '' }
 580             :
 581           </p>
 582           <ul>
 583             {judging_players.map(player => {
 584               return (
 585                 <li
 586                   key={player}
 587                 >
 588                   {player}{' '}
 589                   <span className=
 590                   {this.props.players_judging[player].active ?
 591                    "typing active"
 592                    :
 593                    "typing idle"}>
 594                     <span>{'.'}</span><span>{'.'}</span><span>{'.'}</span>
 595                   </span>
 596                 </li>
 597               );
 598             })}
 599           </ul>
 600         </div>
 601       );
 602     }
 603
 604     if (this.props.players_judged.has(this.props.player.name)) {
 605       return (
 606         <div className="please-wait">
 607           <h2>Submission received</h2>
 608           <p>
 609             The following players have completed judging:{' '}
 610             {[...this.props.players_judged].join(', ')}
 611           </p>
 612           {still_waiting}
 613           {move_on_button}
 614
 615         </div>
 616       );
 617     }
 618
 619     const btn_class = "ambiguity-button";
 620     const btn_selected_class = btn_class + " selected";
 621
 622     return (
 623       <div className="ambiguities">
 624         <h2>Judging Answers</h2>
 625         <p>
 626           Click on each pair of answers that should be scored as equivalent,
 627           (and click any word twice to split it out from a group). Remember,
 628           what goes around comes around, so it's best to be generous when
 629           judging.
 630         </p>
 631         <h2>{this.props.prompt.prompt}</h2>
 632         {this.state.word_sets.map(set => {
 633           return (
 634             <div
 635               className="ambiguity-group"
 636               key={Array.from(set)[0]}
 637             >
 638               {Array.from(set).map(word => {
 639                 return (
 640                   <button
 641                     className={this.state.selected === word ?
 642                                btn_selected_class : btn_class }
 643                     key={word}
 644                     onClick={() => this.handle_click(word)}
 645                   >
 646                     {word}
 647                   </button>
 648                 );
 649               })}
 650             </div>
 651           );
 652         })}
 653         <p>
 654           Click here when done judging:<br/>
 655           <button
 656             onClick={() => this.handle_submit()}
 657           >
 658             Send
 659           </button>
 660         </p>
 661       </div>
 662     );
 663   }
 664 }
 665
 666 class ActivePrompt extends React.PureComponent {
 667
 668   constructor(props) {
 669     super(props);
 670     const items = props.prompt.items;
 671
 672     this.submitted = false;
 673
 674     this.answers = [...Array(items)].map(() => React.createRef());
 675     this.answering_sent_recently = false;
 676
 677     this.handle_submit = this.handle_submit.bind(this);
 678     this.handle_change = this.handle_change.bind(this);
 679   }
 680
 681   handle_change(event) {
 682     /* We don't care (or even look) at what the player is typing at
 683      * this point. We simply want to be informed that the player _is_
 684      * typing so that we can tell the server (which will tell other
 685      * players) that there is activity here.
 686      */
 687
 688     /* Rate limit so that we don't send an "answering" notification
 689      * more frequently than necessary.
 690      */
 691     if (! this.answering_sent_recently) {
 692       fetch_post_json(`answering/${this.props.prompt.id}`);
 693       this.answering_sent_recently = true;
 694       setTimeout(() => { this.answering_sent_recently = false; }, 1000);
 695     }
 696   }
 697
 698   async handle_submit(event) {
 699     const form = event.currentTarget;
 700
 701     /* Prevent the default page-changing form-submission behavior. */
 702     event.preventDefault();
 703
 704     /* And don't submit a second time. */
 705     if (this.submitted)
 706       return;
 707
 708     const response = await fetch_post_json(`answer/${this.props.prompt.id}`, {
 709       answers: this.answers.map(r => r.current.value)
 710     });
 711     if (response.status === 200) {
 712       const result = await response.json();
 713       if (! result.valid) {
 714         add_message("danger", result.message);
 715         return;
 716       }
 717     } else {
 718       add_message("danger", "An error occurred submitting your answers");
 719       return;
 720     }
 721
 722     /* Everything worked. Server is happy with our answers. */
 723     form.reset();
 724     this.submitted = true;
 725   }
 726
 727   render() {
 728     let move_on_button = null;
 729     if (this.props.idle) {
 730       move_on_button =(
 731         <button
 732           className="vote-button"
 733           onClick={() => fetch_post_json(`end-answers/${this.props.prompt.id}`) }
 734         >
 735           Move On
 736           <div className="vote-choices">
 737             {[...this.props.votes].map(v => {
 738               return (
 739                 <div
 740                   key={v}
 741                   className="vote-choice"
 742                 >
 743                   {v}
 744                 </div>
 745               );
 746             })}
 747           </div>
 748         </button>
 749       );
 750     }
 751
 752     let still_waiting = null;
 753     const answering_players = Object.keys(this.props.players_answering);;
 754     if (answering_players.length) {
 755       still_waiting = (
 756         <div>
 757           <p>
 758             Still waiting for the following player
 759             {answering_players.length > 1 ? 's' : ''}
 760             :
 761           </p>
 762           <ul>
 763             {answering_players.map(player => {
 764               return (
 765                 <li
 766                   key={player}
 767                 >
 768                   {player}{' '}
 769                   <span className=
 770                   {this.props.players_answering[player].active ?
 771                    "typing active"
 772                    :
 773                    "typing idle"}>
 774                     <span>{'.'}</span><span>{'.'}</span><span>{'.'}</span>
 775                   </span>
 776                 </li>
 777               );
 778             })}
 779           </ul>
 780         </div>
 781       );
 782     }
 783
 784     if (this.props.players_answered.has(this.props.player.name)) {
 785       return (
 786         <div className="please-wait">
 787           <h2>Submission received</h2>
 788           <p>
 789             The following players have submitted their answers:{' '}
 790             {[...this.props.players_answered].join(', ')}
 791           </p>
 792           {still_waiting}
 793           {move_on_button}
 794
 795         </div>
 796       );
 797     }
 798
 799     return (
 800       <div className="active-prompt">
 801         <h2>The Game of Empathy</h2>
 802         <p>
 803           Remember, you're trying to match your answers with
 804           what the other players submit.
 805           Give {this.props.prompt.items} answer
 806           {this.props.prompt.items > 1 ? 's' : ''} for the following prompt:
 807         </p>
 808         <h2>{this.props.prompt.prompt}</h2>
 809         <form onSubmit={this.handle_submit}>
 810           {[...Array(this.props.prompt.items)].map((whocares,i) => {
 811             return (
 812               <div
 813                 key={i}
 814                 className="form-field large">
 815                 <input
 816                   type="text"
 817                   name={`answer_${i}`}
 818                   required
 819                   autoComplete="off"
 820                   onChange={this.handle_change}
 821                   ref={this.answers[i]}
 822                 />
 823               </div>
 824             );
 825           })}
 826
 827           <div
 828             key="submit-button"
 829             className="form-field large">
 830             <button type="submit">
 831               Send
 832             </button>
 833           </div>
 834
 835         </form>
 836       </div>
 837     );
 838   }
 839 }
 840
 841 class Game extends React.PureComponent {
 842   constructor(props) {
 843     super(props);
 844     this.state = {
 845       game_info: {},
 846       player_info: {},
 847       other_players: [],
 848       prompts: [],
 849       active_prompt: null,
 850       players_answered: new Set(),
 851       players_answering: {},
 852       answering_idle: false,
 853       end_answers_votes: new Set(),
 854       ambiguities: null,
 855       players_judged: new Set(),
 856       players_judging: {},
 857       judging_idle: false,
 858       end_judging_votes: new Set(),
 859       scores: null,
 860       new_game_votes: new Set(),
 861       ready: false
 862     };
 863   }
 864
 865   set_game_info(info) {
 866     this.setState({
 867       game_info: info
 868     });
 869   }
 870
 871   set_player_info(info) {
 872     this.setState({
 873       player_info: info
 874     });
 875   }
 876
 877   set_other_player_info(info) {
 878     const other_players_copy = [...this.state.other_players];
 879     const idx = other_players_copy.findIndex(o => o.id === info.id);
 880     if (idx >= 0) {
 881       other_players_copy[idx] = info;
 882     } else {
 883       other_players_copy.push(info);
 884     }
 885     this.setState({
 886       other_players: other_players_copy
 887     });
 888   }
 889
 890   remove_player(info) {
 891     this.setState({
 892       other_players: this.state.other_players.filter(o => o.id !== info.id)
 893     });
 894   }
 895
 896   reset_game_state() {
 897     this.setState({
 898       prompts: [],
 899       active_prompt: null,
 900       players_answered: new Set(),
 901       players_answering: {},
 902       answering_idle: false,
 903       end_answers_votes: new Set(),
 904       ambiguities: null,
 905       players_judged: new Set(),
 906       players_judging: {},
 907       judging_idle: false,
 908       end_judging_votes: new Set(),
 909       scores: null,
 910       new_game_votes: new Set(),
 911       ready: false
 912     });
 913   }
 914
 915   set_prompts(prompts) {
 916     this.setState({
 917       prompts: prompts
 918     });
 919   }
 920
 921   add_or_update_prompt(prompt) {
 922     const prompts_copy = [...this.state.prompts];
 923     const idx = prompts_copy.findIndex(p => p.id === prompt.id);
 924     if (idx >= 0) {
 925       prompts_copy[idx] = prompt;
 926     } else {
 927       prompts_copy.push(prompt);
 928     }
 929     this.setState({
 930       prompts: prompts_copy
 931     });
 932   }
 933
 934   set_active_prompt(prompt) {
 935     this.setState({
 936       active_prompt: prompt
 937     });
 938   }
 939
 940   set_players_answered(players) {
 941     this.setState({
 942       players_answered: new Set(players)
 943     });
 944   }
 945
 946   set_player_answered(player) {
 947     const new_players_answering = {...this.state.players_answering};
 948     delete new_players_answering[player];
 949
 950     this.setState({
 951       players_answered: new Set([...this.state.players_answered, player]),
 952       players_answering: new_players_answering
 953     });
 954   }
 955
 956   set_players_answering(players) {
 957     const players_answering = {};
 958     for (let player of players) {
 959       players_answering[player] = {active: false};
 960     }
 961     this.setState({
 962       players_answering: players_answering
 963     });
 964   }
 965
 966   set_player_answering(player) {
 967     /* Set the player as actively answering now. */
 968     this.setState({
 969       players_answering: {
 970         ...this.state.players_answering,
 971         [player]: {active: true}
 972       }
 973     });
 974     /* And arrange to have them marked idle very shortly.
 975      *
 976      * Note: This timeout is intentionally very, very short. We only
 977      * need it long enough that the browser has latched onto the state
 978      * change to "active" above. We actually use a CSS transition
 979      * delay to control the user-perceptible length of time after
 980      * which an active player appears inactive.
 981      */
 982     setTimeout(() => {
 983       this.setState({
 984         players_answering: {
 985           ...this.state.players_answering,
 986           [player]: {active: false}
 987         }
 988       });
 989     }, 100);
 990   }
 991
 992   set_answering_idle(value) {
 993     this.setState({
 994       answering_idle: value
 995     });
 996   }
 997
 998   set_end_answers(players) {
 999     this.setState({
1000       end_answers_votes: new Set(players)
1001     });
1002   }
1003
1004   set_player_vote_end_answers(player) {
1005     this.setState({
1006       end_answers_votes: new Set([...this.state.end_answers_votes, player])
1007     });
1008   }
1009
1010   set_player_unvote_end_answers(player) {
1011     this.setState({
1012       end_answers_votes: new Set([...this.state.end_answers_votes].filter(p => p !== player))
1013     });
1014   }
1015
1016   set_ambiguities(ambiguities) {
1017     this.setState({
1018       ambiguities: ambiguities
1019     });
1020   }
1021
1022   set_players_judged(players) {
1023     this.setState({
1024       players_judged: new Set(players)
1025     });
1026   }
1027
1028   set_player_judged(player) {
1029     const new_players_judging = {...this.state.players_judging};
1030     delete new_players_judging[player];
1031
1032     this.setState({
1033       players_judged: new Set([...this.state.players_judged, player]),
1034       players_judging: new_players_judging
1035     });
1036   }
1037
1038   set_players_judging(players) {
1039     const players_judging = {};
1040     for (let player of players) {
1041       players_judging[player] = {active: false};
1042     }
1043     this.setState({
1044       players_judging: players_judging
1045     });
1046   }
1047
1048   set_player_judging(player) {
1049     /* Set the player as actively judging now. */
1050     this.setState({
1051       players_judging: {
1052         ...this.state.players_judging,
1053         [player]: {active: true}
1054       }
1055     });
1056     /* And arrange to have them marked idle very shortly.
1057      *
1058      * Note: This timeout is intentionally very, very short. We only
1059      * need it long enough that the browser has latched onto the state
1060      * change to "active" above. We actually use a CSS transition
1061      * delay to control the user-perceptible length of time after
1062      * which an active player appears inactive.
1063      */
1064     setTimeout(() => {
1065       this.setState({
1066         players_judging: {
1067           ...this.state.players_judging,
1068           [player]: {active: false}
1069         }
1070       });
1071     }, 100);
1072
1073   }
1074
1075   set_judging_idle(value) {
1076     this.setState({
1077       judging_idle: value
1078     });
1079   }
1080
1081   set_end_judging(players) {
1082     this.setState({
1083       end_judging_votes: new Set(players)
1084     });
1085   }
1086
1087   set_player_vote_end_judging(player) {
1088     this.setState({
1089       end_judging_votes: new Set([...this.state.end_judging_votes, player])
1090     });
1091   }
1092
1093   set_player_unvote_end_judging(player) {
1094     this.setState({
1095       end_judging_votes: new Set([...this.state.end_judging_votes].filter(p => p !== player))
1096     });
1097   }
1098
1099   set_scores(scores) {
1100     this.setState({
1101       scores: scores
1102     });
1103   }
1104
1105   set_new_game_votes(players) {
1106     this.setState({
1107       new_game_votes: new Set(players)
1108     });
1109   }
1110
1111   set_player_vote_new_game(player) {
1112     this.setState({
1113       new_game_votes: new Set([...this.state.new_game_votes, player])
1114     });
1115   }
1116
1117   set_player_unvote_new_game(player) {
1118     this.setState({
1119       new_game_votes: new Set([...this.state.new_game_votes].filter(p => p !== player))
1120     });
1121   }
1122
1123   state_ready() {
1124     this.setState({
1125       ready: true
1126     });
1127   }
1128
1129   render() {
1130     const state = this.state;
1131     const players_total = 1 + state.other_players.length;
1132
1133     if (state.scores) {
1134       return (
1135         <div className="scores">
1136           <h2>{state.active_prompt.prompt}</h2>
1137           <h2>Scores</h2>
1138           <ul>
1139             {state.scores.scores.map(score => {
1140               return (
1141                 <li key={score.player}>
1142                   {score.players.join("/")}: {score.score}
1143                 </li>
1144               );
1145             })}
1146           </ul>
1147           <h2>Words submitted</h2>
1148           <ul>
1149             {state.scores.words.map(word => {
1150               return (
1151                 <li key={word.word}>
1152                   {word.word} ({word.players.length}): {word.players.join(', ')}
1153                 </li>
1154               );
1155             })}
1156           </ul>
1157           <button
1158             className="vote-button"
1159             onClick={() => fetch_post_json(`new-game/${state.active_prompt.id}`) }
1160           >
1161             New Game
1162             <div className="vote-choices">
1163               {[...state.new_game_votes].map(v => {
1164                 return (
1165                   <div
1166                     key={v}
1167                     className="vote-choice"
1168                   >
1169                     {v}
1170                   </div>
1171                 );
1172               })}
1173             </div>
1174           </button>
1175         </div>
1176       );
1177     }
1178
1179     if (state.ambiguities){
1180       return <Ambiguities
1181                prompt={state.active_prompt}
1182                words={state.ambiguities}
1183                player={state.player_info}
1184                players_judged={state.players_judged}
1185                players_judging={state.players_judging}
1186                idle={state.judging_idle}
1187                votes={state.end_judging_votes}
1188              />;
1189     }
1190
1191     if (state.active_prompt) {
1192       return <ActivePrompt
1193                prompt={state.active_prompt}
1194                player={state.player_info}
1195                players_answered={state.players_answered}
1196                players_answering={state.players_answering}
1197                idle={state.answering_idle}
1198                votes={state.end_answers_votes}
1199              />;
1200     }
1201
1202     if (! state.ready)
1203       return null;
1204
1205     return [
1206       <GameInfo
1207         key="game-info"
1208         id={state.game_info.id}
1209         url={state.game_info.url}
1210       />,
1211       <PlayerInfo
1212         key="player-info"
1213         game={this}
1214         player={state.player_info}
1215         other_players={state.other_players}
1216       />,
1217       <p key="spacer"></p>,
1218       <CategoryRequest
1219         key="category-request"
1220       />,
1221       <PromptOptions
1222         key="prompts"
1223         prompts={state.prompts}
1224       />,
1225       <LetsPlay
1226         key="lets-play"
1227         num_players={1+state.other_players.length}
1228         prompts={state.prompts}
1229       />
1230     ];
1231   }
1232 }
1233
1234 ReactDOM.render(<Game
1235                   ref={(me) => window.game = me}
1236                 />, document.getElementById("empathy"));