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     if (Object.keys(this.props.players_judging).length) {
 574       still_waiting = [
 575         <p>
 576           Still waiting for the following players:
 577         </p>,
 578         <ul>
 579           {Object.keys(this.props.players_judging).map(player => {
 580             return (
 581               <li
 582                 key={player}
 583               >
 584                 {player}
 585                 {this.props.players_judging[player] ?
 586                  <span className="typing"/> : null }
 587               </li>
 588             );
 589           })}
 590         </ul>
 591       ];
 592     }
 593
 594     if (this.props.players_judged.has(this.props.player.name)) {
 595       return (
 596         <div className="please-wait">
 597           <h2>Submission received</h2>
 598           <p>
 599             The following players have completed judging:{' '}
 600             {[...this.props.players_judged].join(', ')}
 601           </p>
 602           {still_waiting}
 603           {move_on_button}
 604
 605         </div>
 606       );
 607     }
 608
 609     const btn_class = "ambiguity-button";
 610     const btn_selected_class = btn_class + " selected";
 611
 612     return (
 613       <div className="ambiguities">
 614         <h2>Judging Answers</h2>
 615         <p>
 616           Click on each pair of answers that should be scored as equivalent,
 617           (and click any word twice to split it out from a group). Remember,
 618           what goes around comes around, so it's best to be generous when
 619           judging.
 620         </p>
 621         <h2>{this.props.prompt.prompt}</h2>
 622         {this.state.word_sets.map(set => {
 623           return (
 624             <div
 625               className="ambiguity-group"
 626               key={Array.from(set)[0]}
 627             >
 628               {Array.from(set).map(word => {
 629                 return (
 630                   <button
 631                     className={this.state.selected === word ?
 632                                btn_selected_class : btn_class }
 633                     key={word}
 634                     onClick={() => this.handle_click(word)}
 635                   >
 636                     {word}
 637                   </button>
 638                 );
 639               })}
 640             </div>
 641           );
 642         })}
 643         <p>
 644           Click here when done judging:<br/>
 645           <button
 646             onClick={() => this.handle_submit()}
 647           >
 648             Send
 649           </button>
 650         </p>
 651       </div>
 652     );
 653   }
 654 }
 655
 656 class ActivePrompt extends React.PureComponent {
 657
 658   constructor(props) {
 659     super(props);
 660     const items = props.prompt.items;
 661
 662     this.submitted = false;
 663
 664     this.answers = [...Array(items)].map(() => React.createRef());
 665     this.answering_sent_recently = false;
 666
 667     this.handle_submit = this.handle_submit.bind(this);
 668     this.handle_change = this.handle_change.bind(this);
 669   }
 670
 671   handle_change(event) {
 672     /* We don't care (or even look) at what the player is typing at
 673      * this point. We simply want to be informed that the player _is_
 674      * typing so that we can tell the server (which will tell other
 675      * players) that there is activity here.
 676      */
 677
 678     /* Rate limit so that we don't send an "answering" notification
 679      * more frequently than necessary.
 680      */
 681     if (! this.answering_sent_recently) {
 682       fetch_post_json(`answering/${this.props.prompt.id}`);
 683       this.answering_sent_recently = true;
 684       setTimeout(() => { this.answering_sent_recently = false; }, 1000);
 685     }
 686   }
 687
 688   async handle_submit(event) {
 689     const form = event.currentTarget;
 690
 691     /* Prevent the default page-changing form-submission behavior. */
 692     event.preventDefault();
 693
 694     /* And don't submit a second time. */
 695     if (this.submitted)
 696       return;
 697
 698     const response = await fetch_post_json(`answer/${this.props.prompt.id}`, {
 699       answers: this.answers.map(r => r.current.value)
 700     });
 701     if (response.status === 200) {
 702       const result = await response.json();
 703       if (! result.valid) {
 704         add_message("danger", result.message);
 705         return;
 706       }
 707     } else {
 708       add_message("danger", "An error occurred submitting your answers");
 709       return;
 710     }
 711
 712     /* Everything worked. Server is happy with our answers. */
 713     form.reset();
 714     this.submitted = true;
 715   }
 716
 717   render() {
 718     let move_on_button = null;
 719     if (this.props.idle) {
 720       move_on_button =(
 721         <button
 722           className="vote-button"
 723           onClick={() => fetch_post_json(`end-answers/${this.props.prompt.id}`) }
 724         >
 725           Move On
 726           <div className="vote-choices">
 727             {[...this.props.votes].map(v => {
 728               return (
 729                 <div
 730                   key={v}
 731                   className="vote-choice"
 732                 >
 733                   {v}
 734                 </div>
 735               );
 736             })}
 737           </div>
 738         </button>
 739       );
 740     }
 741
 742     let still_waiting = null;
 743     if (Object.keys(this.props.players_answering).length) {
 744       still_waiting = [
 745         <p>
 746           Still waiting for the following players:
 747         </p>,
 748         <ul>
 749            {Object.keys(this.props.players_answering).map(player => {
 750              return (
 751                <li
 752                  key={player}
 753                >
 754                  {player}
 755                  {this.props.players_answering[player] ?
 756                   <span className="typing"/> : null }
 757                </li>
 758              );
 759            })}
 760         </ul>
 761       ];
 762     }
 763
 764     if (this.props.players_answered.has(this.props.player.name)) {
 765       return (
 766         <div className="please-wait">
 767           <h2>Submission received</h2>
 768           <p>
 769             The following players have submitted their answers:{' '}
 770             {[...this.props.players_answered].join(', ')}
 771           </p>
 772           {still_waiting}
 773           {move_on_button}
 774
 775         </div>
 776       );
 777     }
 778
 779     return (
 780       <div className="active-prompt">
 781         <h2>The Game of Empathy</h2>
 782         <p>
 783           Remember, you're trying to match your answers with
 784           what the other players submit.
 785           Give {this.props.prompt.items} answer
 786           {this.props.prompt.items > 1 ? 's' : ''} for the following prompt:
 787         </p>
 788         <h2>{this.props.prompt.prompt}</h2>
 789         <form onSubmit={this.handle_submit}>
 790           {[...Array(this.props.prompt.items)].map((whocares,i) => {
 791             return (
 792               <div
 793                 key={i}
 794                 className="form-field large">
 795                 <input
 796                   type="text"
 797                   name={`answer_${i}`}
 798                   required
 799                   autoComplete="off"
 800                   onChange={this.handle_change}
 801                   ref={this.answers[i]}
 802                 />
 803               </div>
 804             );
 805           })}
 806
 807           <div
 808             key="submit-button"
 809             className="form-field large">
 810             <button type="submit">
 811               Send
 812             </button>
 813           </div>
 814
 815         </form>
 816       </div>
 817     );
 818   }
 819 }
 820
 821 class Game extends React.PureComponent {
 822   constructor(props) {
 823     super(props);
 824     this.state = {
 825       game_info: {},
 826       player_info: {},
 827       other_players: [],
 828       prompts: [],
 829       active_prompt: null,
 830       players_answered: new Set(),
 831       players_answering: {},
 832       answering_idle: false,
 833       end_answers_votes: new Set(),
 834       ambiguities: null,
 835       players_judged: new Set(),
 836       players_judging: {},
 837       judging_idle: false,
 838       end_judging_votes: new Set(),
 839       scores: null,
 840       new_game_votes: new Set(),
 841       ready: false
 842     };
 843   }
 844
 845   set_game_info(info) {
 846     this.setState({
 847       game_info: info
 848     });
 849   }
 850
 851   set_player_info(info) {
 852     this.setState({
 853       player_info: info
 854     });
 855   }
 856
 857   set_other_player_info(info) {
 858     const other_players_copy = [...this.state.other_players];
 859     const idx = other_players_copy.findIndex(o => o.id === info.id);
 860     if (idx >= 0) {
 861       other_players_copy[idx] = info;
 862     } else {
 863       other_players_copy.push(info);
 864     }
 865     this.setState({
 866       other_players: other_players_copy
 867     });
 868   }
 869
 870   remove_player(info) {
 871     this.setState({
 872       other_players: this.state.other_players.filter(o => o.id !== info.id)
 873     });
 874   }
 875
 876   reset_game_state() {
 877     this.setState({
 878       prompts: [],
 879       active_prompt: null,
 880       players_answered: new Set(),
 881       players_answering: {},
 882       answering_idle: false,
 883       end_answers_votes: new Set(),
 884       ambiguities: null,
 885       players_judged: new Set(),
 886       players_judging: {},
 887       judging_idle: false,
 888       end_judging_votes: new Set(),
 889       scores: null,
 890       new_game_votes: new Set(),
 891       ready: false
 892     });
 893   }
 894
 895   set_prompts(prompts) {
 896     this.setState({
 897       prompts: prompts
 898     });
 899   }
 900
 901   add_or_update_prompt(prompt) {
 902     const prompts_copy = [...this.state.prompts];
 903     const idx = prompts_copy.findIndex(p => p.id === prompt.id);
 904     if (idx >= 0) {
 905       prompts_copy[idx] = prompt;
 906     } else {
 907       prompts_copy.push(prompt);
 908     }
 909     this.setState({
 910       prompts: prompts_copy
 911     });
 912   }
 913
 914   set_active_prompt(prompt) {
 915     this.setState({
 916       active_prompt: prompt
 917     });
 918   }
 919
 920   set_players_answered(players) {
 921     this.setState({
 922       players_answered: new Set(players)
 923     });
 924   }
 925
 926   set_player_answered(player) {
 927     const new_players_answering = {...this.state.players_answering};
 928     delete new_players_answering[player];
 929
 930     this.setState({
 931       players_answered: new Set([...this.state.players_answered, player]),
 932       players_answering: new_players_answering
 933     });
 934   }
 935
 936   set_players_answering(players) {
 937     const players_answering = {};
 938     for (let player of players) {
 939       players_answering[player] = {active: false};
 940     }
 941     this.setState({
 942       players_answering: players_answering
 943     });
 944   }
 945
 946   set_player_answering(player) {
 947     this.setState({
 948       players_answering: {
 949         ...this.state.players_answering,
 950         [player]: {active: true}
 951       }
 952     });
 953   }
 954
 955   set_answering_idle(value) {
 956     this.setState({
 957       answering_idle: value
 958     });
 959   }
 960
 961   set_end_answers(players) {
 962     this.setState({
 963       end_answers_votes: new Set(players)
 964     });
 965   }
 966
 967   set_player_vote_end_answers(player) {
 968     this.setState({
 969       end_answers_votes: new Set([...this.state.end_answers_votes, player])
 970     });
 971   }
 972
 973   set_player_unvote_end_answers(player) {
 974     this.setState({
 975       end_answers_votes: new Set([...this.state.end_answers_votes].filter(p => p !== player))
 976     });
 977   }
 978
 979   set_ambiguities(ambiguities) {
 980     this.setState({
 981       ambiguities: ambiguities
 982     });
 983   }
 984
 985   set_players_judged(players) {
 986     this.setState({
 987       players_judged: new Set(players)
 988     });
 989   }
 990
 991   set_player_judged(player) {
 992     const new_players_judging = {...this.state.players_judging};
 993     delete new_players_judging[player];
 994
 995     this.setState({
 996       players_judged: new Set([...this.state.players_judged, player]),
 997       players_judging: new_players_judging
 998     });
 999   }
1000
1001   set_players_judging(players) {
1002     const players_judging = {};
1003     for (let player of players) {
1004       players_judging[player] = {active: false};
1005     }
1006     this.setState({
1007       players_judging: players_judging
1008     });
1009   }
1010
1011   set_player_judging(player) {
1012     this.setState({
1013       players_judging: {
1014         ...this.state.players_judging,
1015         [player]: {active: true}
1016       }
1017     });
1018   }
1019
1020   set_judging_idle(value) {
1021     this.setState({
1022       judging_idle: value
1023     });
1024   }
1025
1026   set_end_judging(players) {
1027     this.setState({
1028       end_judging_votes: new Set(players)
1029     });
1030   }
1031
1032   set_player_vote_end_judging(player) {
1033     this.setState({
1034       end_judging_votes: new Set([...this.state.end_judging_votes, player])
1035     });
1036   }
1037
1038   set_player_unvote_end_judging(player) {
1039     this.setState({
1040       end_judging_votes: new Set([...this.state.end_judging_votes].filter(p => p !== player))
1041     });
1042   }
1043
1044   set_scores(scores) {
1045     this.setState({
1046       scores: scores
1047     });
1048   }
1049
1050   set_new_game_votes(players) {
1051     this.setState({
1052       new_game_votes: new Set(players)
1053     });
1054   }
1055
1056   set_player_vote_new_game(player) {
1057     this.setState({
1058       new_game_votes: new Set([...this.state.new_game_votes, player])
1059     });
1060   }
1061
1062   set_player_unvote_new_game(player) {
1063     this.setState({
1064       new_game_votes: new Set([...this.state.new_game_votes].filter(p => p !== player))
1065     });
1066   }
1067
1068   state_ready() {
1069     this.setState({
1070       ready: true
1071     });
1072   }
1073
1074   render() {
1075     const state = this.state;
1076     const players_total = 1 + state.other_players.length;
1077
1078     if (state.scores) {
1079       return (
1080         <div className="scores">
1081           <h2>{state.active_prompt.prompt}</h2>
1082           <h2>Scores</h2>
1083           <ul>
1084             {state.scores.scores.map(score => {
1085               return (
1086                 <li key={score.player}>
1087                   {score.players.join("/")}: {score.score}
1088                 </li>
1089               );
1090             })}
1091           </ul>
1092           <h2>Words submitted</h2>
1093           <ul>
1094             {state.scores.words.map(word => {
1095               return (
1096                 <li key={word.word}>
1097                   {word.word} ({word.players.length}): {word.players.join(', ')}
1098                 </li>
1099               );
1100             })}
1101           </ul>
1102           <button
1103             className="vote-button"
1104             onClick={() => fetch_post_json(`new-game/${state.active_prompt.id}`) }
1105           >
1106             New Game
1107             <div className="vote-choices">
1108               {[...state.new_game_votes].map(v => {
1109                 return (
1110                   <div
1111                     key={v}
1112                     className="vote-choice"
1113                   >
1114                     {v}
1115                   </div>
1116                 );
1117               })}
1118             </div>
1119           </button>
1120         </div>
1121       );
1122     }
1123
1124     if (state.ambiguities){
1125       return <Ambiguities
1126                prompt={state.active_prompt}
1127                words={state.ambiguities}
1128                player={state.player_info}
1129                players_judged={state.players_judged}
1130                players_judging={state.players_judging}
1131                idle={state.judging_idle}
1132                votes={state.end_judging_votes}
1133              />;
1134     }
1135
1136     if (state.active_prompt) {
1137       return <ActivePrompt
1138                prompt={state.active_prompt}
1139                player={state.player_info}
1140                players_answered={state.players_answered}
1141                players_answering={state.players_answering}
1142                idle={state.answering_idle}
1143                votes={state.end_answers_votes}
1144              />;
1145     }
1146
1147     if (! state.ready)
1148       return null;
1149
1150     return [
1151       <GameInfo
1152         key="game-info"
1153         id={state.game_info.id}
1154         url={state.game_info.url}
1155       />,
1156       <PlayerInfo
1157         key="player-info"
1158         game={this}
1159         player={state.player_info}
1160         other_players={state.other_players}
1161       />,
1162       <p key="spacer"></p>,
1163       <CategoryRequest
1164         key="category-request"
1165       />,
1166       <PromptOptions
1167         key="prompts"
1168         prompts={state.prompts}
1169       />,
1170       <LetsPlay
1171         key="lets-play"
1172         num_players={1+state.other_players.length}
1173         prompts={state.prompts}
1174       />
1175     ];
1176   }
1177 }
1178
1179 ReactDOM.render(<Game
1180                   ref={(me) => window.game = me}
1181                 />, document.getElementById("empathy"));