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 > 0 && 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     if (num_items < 1) {
 315       category_input.setCustomValidity("Category must require at least one item.");
 316       form.reportValidity();
 317       return;
 318     }
 319
 320     const response = await fetch_post_json("prompts", {
 321       items: num_items,
 322       prompt: category
 323     });
 324
 325     if (response.status === 200) {
 326       const result = await response.json();
 327       if (! result.valid) {
 328         add_message("danger", result.message);
 329         return;
 330       }
 331     } else {
 332       add_message("danger", "An error occurred submitting your category");
 333     }
 334
 335     form.reset();
 336   }
 337
 338   render() {
 339     return (
 340       <div className="category-request">
 341         <h2>Submit a Category</h2>
 342         <p>
 343           Suggest a category to play. Don't forget to include the
 344           number of items for each person to submit.
 345         </p>
 346
 347         <form onSubmit={this.handle_submit} >
 348           <div className="form-field large">
 349             <input
 350               type="text"
 351               id="category"
 352               placeholder="6 things at the beach"
 353               required
 354               autoComplete="off"
 355               onChange={this.handle_change}
 356               ref={this.category}
 357             />
 358           </div>
 359
 360           <div className="form-field large">
 361             <button type="submit">
 362               Send
 363             </button>
 364           </div>
 365
 366         </form>
 367       </div>
 368     );
 369   }
 370 }
 371
 372 const PromptOption = React.memo(props => {
 373
 374   const prompt = props.prompt;
 375
 376   if (prompt.votes_against.find(v => v === props.player.name))
 377     return false;
 378
 379   return (
 380     <button
 381       className="vote-button"
 382       key={prompt.id}
 383       onClick={() => fetch_post_json(`vote/${prompt.id}`) }
 384     >
 385       <span
 386         className="hide-button"
 387         onClick={(event) => {
 388           event.stopPropagation();
 389           fetch_post_json(`vote_against/${prompt.id}`);
 390         }}
 391       >
 392         &times;
 393       </span>
 394       {prompt.prompt}
 395       <div className="vote-choices">
 396         {prompt.votes.map(v => {
 397           return (
 398             <div
 399               key={v}
 400               className="vote-choice"
 401             >
 402               {v}
 403             </div>
 404           );
 405         })}
 406       </div>
 407     </button>
 408   );
 409 });
 410
 411 const PromptOptions = React.memo(props => {
 412
 413   if (props.prompts.length === 0)
 414     return null;
 415
 416   return (
 417     <div className="prompt-options">
 418       <h2>Vote on Categories</h2>
 419       <p>
 420         Select any categories below that you'd like to play.
 421         You can choose as many as you'd like.
 422       </p>
 423       {props.prompts.map(
 424         prompt => <PromptOption
 425                     key={prompt.id}
 426                     prompt={prompt}
 427                     player={props.player}
 428                   />
 429       )}
 430     </div>
 431   );
 432 });
 433
 434 const LetsPlay = React.memo(props => {
 435
 436   const quorum = Math.round((props.num_players + 1) / 2);
 437   const max_votes = props.prompts.reduce(
 438     (max_so_far, v) => Math.max(max_so_far, v.votes.length), 0);
 439
 440   if (max_votes < quorum)
 441     return null;
 442
 443   const candidates = props.prompts.filter(p => p.votes.length >= quorum);
 444   const index = Math.floor(Math.random() * candidates.length);
 445   const winner = candidates[index];
 446
 447   return (
 448     <div className="lets-play">
 449       <h2>Let's Play</h2>
 450       <p>
 451         That should be enough voting. If you're not waiting for any
 452         other players to join, then let's start.
 453       </p>
 454       <button
 455         className="lets-play"
 456         onClick={() => fetch_post_json(`start/${winner.id}`) }
 457       >
 458         Start Game
 459       </button>
 460     </div>
 461   );
 462 });
 463
 464 class Ambiguities extends React.PureComponent {
 465
 466   constructor(props) {
 467     super(props);
 468
 469     function canonize(word) {
 470       return word.replace(/((a|an|the) )?(.*?)s?$/i, '$3');
 471     }
 472
 473     const word_sets = [];
 474
 475     for (let word of props.words) {
 476       const word_canon = canonize(word);
 477       let found_match = false;
 478       for (let set of word_sets) {
 479         const set_canon = canonize(set.values().next().value);
 480         if (word_canon === set_canon) {
 481           set.add(word);
 482           found_match = true;;
 483           break;
 484         }
 485       }
 486       if (! found_match) {
 487         const set = new Set();
 488         set.add(word);
 489         word_sets.push(set);
 490       }
 491     }
 492
 493     this.state = {
 494       word_sets: word_sets,
 495       selected: null,
 496       starred: null
 497     };
 498
 499     this.submitted = false;
 500     this.judging_sent_recently = false;
 501   }
 502
 503   async handle_submit() {
 504
 505     /* Don't submit a second time. */
 506     if (this.submitted)
 507       return;
 508
 509     const response = await fetch_post_json(
 510       `judged/${this.props.prompt.id}`,{
 511         word_groups: this.state.word_sets.map(set => Array.from(set)),
 512         kudos: this.state.starred ? Array.from(this.state.starred) : null
 513       }
 514     );
 515
 516     if (response.status === 200) {
 517       const result = await response.json();
 518       if (! result.valid) {
 519         add_message("danger", result.message);
 520         return;
 521       }
 522     } else {
 523       add_message("danger", "An error occurred submitting the results of your judging");
 524       return;
 525     }
 526
 527     this.submitted = true;
 528   }
 529
 530   handle_click(word) {
 531
 532     /* Let the server know we are doing some judging, (but rate limit
 533      * this so we don't send a "judging" notification more frquently
 534      * than necessary.
 535      */
 536     if (! this.judging_sent_recently) {
 537       fetch_post_json(`judging/${this.props.prompt.id}`);
 538       this.judging_sent_recently = true;
 539       setTimeout(() => { this.judging_sent_recently = false; }, 1000);
 540     }
 541
 542     if (this.state.selected == word) {
 543       /* Second click on same word removes the word from the group. */
 544       const idx = this.state.word_sets.findIndex(s => s.has(word));
 545       const set = this.state.word_sets[idx];
 546       if (set.size === 1) {
 547         /* When the word is already alone, there's nothing to do but
 548          * to un-select it. */
 549         this.setState({
 550           selected: null
 551         });
 552         return;
 553       }
 554
 555       const new_set = new Set([...set].filter(w => w !== word));
 556       this.setState({
 557         selected: null,
 558         word_sets: [...this.state.word_sets.slice(0, idx),
 559                     new_set,
 560                     new Set().add(word),
 561                     ...this.state.word_sets.slice(idx+1)]
 562       });
 563     } else if (this.state.selected) {
 564       /* Click of a second word groups the two together. */
 565       const idx1 = this.state.word_sets.findIndex(s => s.has(this.state.selected));
 566       const idx2 = this.state.word_sets.findIndex(s => s.has(word));
 567       const set1 = this.state.word_sets[idx1];
 568       const set2 = this.state.word_sets[idx2];
 569       const new_set = new Set([...set2, ...set1]);
 570       if (idx1 < idx2) {
 571         this.setState({
 572           selected: null,
 573           word_sets: [...this.state.word_sets.slice(0, idx1),
 574                       ...this.state.word_sets.slice(idx1 + 1, idx2),
 575                       new_set,
 576                       ...this.state.word_sets.slice(idx2 + 1)]
 577         });
 578       } else {
 579         this.setState({
 580           selected: null,
 581           word_sets: [...this.state.word_sets.slice(0, idx2),
 582                       new_set,
 583                       ...this.state.word_sets.slice(idx2 + 1, idx1),
 584                       ...this.state.word_sets.slice(idx1 + 1)]
 585         });
 586       }
 587     } else {
 588       /* First click of a word selects it. */
 589       this.setState({
 590         selected: word
 591       });
 592     }
 593   }
 594
 595   render() {
 596     let move_on_button = null;
 597
 598     if (this.props.idle) {
 599       move_on_button = (
 600         <button
 601           className="vote-button"
 602           onClick={() => fetch_post_json(`end-judging/${this.props.prompt.id}`) }
 603         >
 604           Move On Without Their Input
 605           <div className="vote-choices">
 606             {[...this.props.votes].map(v => {
 607               return (
 608                 <div
 609                   key={v}
 610                   className="vote-choice"
 611                 >
 612                   {v}
 613                   </div>
 614               );
 615             })}
 616           </div>
 617         </button>
 618       );
 619     }
 620
 621     let still_waiting = null;
 622     const judging_players = Object.keys(this.props.players_judging);
 623     if (judging_players.length) {
 624       still_waiting = (
 625         <div>
 626           <p>
 627             Still waiting for the following player
 628             {judging_players.length > 1 ? 's' : '' }
 629             :
 630           </p>
 631           <ul>
 632             {judging_players.map(player => {
 633               return (
 634                 <li
 635                   key={player}
 636                 >
 637                   {player}{' '}
 638                   <span className=
 639                   {this.props.players_judging[player].active ?
 640                    "typing active"
 641                    :
 642                    "typing idle"}>
 643                     <span>{'.'}</span><span>{'.'}</span><span>{'.'}</span>
 644                   </span>
 645                 </li>
 646               );
 647             })}
 648           </ul>
 649         </div>
 650       );
 651     }
 652
 653     if (this.props.players_judged.has(this.props.player.name)) {
 654       return (
 655         <div className="please-wait">
 656           <h2>Submission received</h2>
 657           <p>
 658             The following players have completed judging:{' '}
 659             {[...this.props.players_judged].join(', ')}
 660           </p>
 661           {still_waiting}
 662           {move_on_button}
 663
 664         </div>
 665       );
 666     }
 667
 668     const btn_class = "ambiguity-button";
 669     const btn_selected_class = btn_class + " selected";
 670
 671     return (
 672       <div className="ambiguities">
 673         <h2>Judging Answers</h2>
 674         <p>
 675           Click on each pair of answers that should be scored as equivalent,
 676           (and click any word twice to split it out from a group). Remember,
 677           what goes around comes around, so it's best to be generous when
 678           judging.
 679         </p>
 680         <h2>{this.props.prompt.prompt}</h2>
 681         {this.state.word_sets.map(set => {
 682           return (
 683             <div
 684               className="ambiguity-group"
 685               key={Array.from(set)[0]}
 686             >
 687               {Array.from(set).map(word => {
 688                 return (
 689                   <button
 690                     className={this.state.selected === word ?
 691                                btn_selected_class : btn_class }
 692                     key={word}
 693                     onClick={() => this.handle_click(word)}
 694                   >
 695                     {word}
 696                   </button>
 697                 );
 698               })}
 699               <span
 700                 className={this.state.starred === set ?
 701                            "star-button selected" : "star-button"
 702                           }
 703                 onClick={(event) => {
 704                   event.stopPropagation();
 705                   this.setState({
 706                     starred: set
 707                   });
 708                 }}
 709               >
 710               {this.state.starred === set ?
 711                '★' : '☆'
 712               }
 713               </span>
 714             </div>
 715           );
 716         })}
 717         <p>
 718           Click here when done judging:<br/>
 719           <button
 720             onClick={() => this.handle_submit()}
 721           >
 722             Send
 723           </button>
 724         </p>
 725       </div>
 726     );
 727   }
 728 }
 729
 730 class ActivePrompt extends React.PureComponent {
 731
 732   constructor(props) {
 733     super(props);
 734     const items = props.prompt.items;
 735
 736     this.submitted = false;
 737
 738     this.answers = [...Array(items)].map(() => React.createRef());
 739     this.answering_sent_recently = false;
 740
 741     this.handle_submit = this.handle_submit.bind(this);
 742     this.handle_change = this.handle_change.bind(this);
 743   }
 744
 745   handle_change(event) {
 746     /* We don't care (or even look) at what the player is typing at
 747      * this point. We simply want to be informed that the player _is_
 748      * typing so that we can tell the server (which will tell other
 749      * players) that there is activity here.
 750      */
 751
 752     /* Rate limit so that we don't send an "answering" notification
 753      * more frequently than necessary.
 754      */
 755     if (! this.answering_sent_recently) {
 756       fetch_post_json(`answering/${this.props.prompt.id}`);
 757       this.answering_sent_recently = true;
 758       setTimeout(() => { this.answering_sent_recently = false; }, 1000);
 759     }
 760   }
 761
 762   async handle_submit(event) {
 763     const form = event.currentTarget;
 764
 765     /* Prevent the default page-changing form-submission behavior. */
 766     event.preventDefault();
 767
 768     /* And don't submit a second time. */
 769     if (this.submitted)
 770       return;
 771
 772     const response = await fetch_post_json(`answer/${this.props.prompt.id}`, {
 773       answers: this.answers.map(r => r.current.value)
 774     });
 775     if (response.status === 200) {
 776       const result = await response.json();
 777       if (! result.valid) {
 778         add_message("danger", result.message);
 779         return;
 780       }
 781     } else {
 782       add_message("danger", "An error occurred submitting your answers");
 783       return;
 784     }
 785
 786     /* Everything worked. Server is happy with our answers. */
 787     form.reset();
 788     this.submitted = true;
 789   }
 790
 791   render() {
 792
 793     let still_waiting = null;
 794     const answering_players = Object.keys(this.props.players_answering);;
 795     if (answering_players.length) {
 796       still_waiting = (
 797         <div>
 798           <p>
 799             Still waiting for the following player
 800             {answering_players.length > 1 ? 's' : ''}
 801             :
 802           </p>
 803           <ul>
 804             {answering_players.map(player => {
 805               return (
 806                 <li
 807                   key={player}
 808                 >
 809                   {player}{' '}
 810                   <span className=
 811                   {this.props.players_answering[player].active ?
 812                    "typing active"
 813                    :
 814                    "typing idle"}>
 815                     <span>{'.'}</span><span>{'.'}</span><span>{'.'}</span>
 816                   </span>
 817                 </li>
 818               );
 819             })}
 820           </ul>
 821         </div>
 822       );
 823     }
 824
 825     let move_on_button = null;
 826     if (this.props.idle) {
 827       move_on_button =(
 828         <button
 829           className="vote-button"
 830           onClick={() => fetch_post_json(`end-answers/${this.props.prompt.id}`) }
 831         >
 832           Move On Without Their Answers
 833           <div className="vote-choices">
 834             {[...this.props.votes].map(v => {
 835               return (
 836                 <div
 837                   key={v}
 838                   className="vote-choice"
 839                 >
 840                   {v}
 841                 </div>
 842               );
 843             })}
 844           </div>
 845         </button>
 846       );
 847     }
 848
 849     if (this.props.players_answered.has(this.props.player.name)) {
 850       return (
 851         <div className="please-wait">
 852           <h2>Submission received</h2>
 853           <p>
 854             The following players have submitted their answers:{' '}
 855             {[...this.props.players_answered].join(', ')}
 856           </p>
 857           {still_waiting}
 858           {move_on_button}
 859
 860         </div>
 861       );
 862     }
 863
 864     return (
 865       <div className="active-prompt">
 866         <h2>The Game of Empathy</h2>
 867         <p>
 868           Remember, you're trying to match your answers with
 869           what the other players submit.
 870           Give {this.props.prompt.items} answer
 871           {this.props.prompt.items > 1 ? 's' : ''} for the following prompt:
 872         </p>
 873         <h2>{this.props.prompt.prompt}</h2>
 874         <form onSubmit={this.handle_submit}>
 875           {[...Array(this.props.prompt.items)].map((whocares,i) => {
 876             return (
 877               <div
 878                 key={i}
 879                 className="form-field large">
 880                 <input
 881                   type="text"
 882                   name={`answer_${i}`}
 883                   required
 884                   autoComplete="off"
 885                   onChange={this.handle_change}
 886                   ref={this.answers[i]}
 887                 />
 888               </div>
 889             );
 890           })}
 891
 892           <div
 893             key="submit-button"
 894             className="form-field large">
 895             <button type="submit">
 896               Send
 897             </button>
 898           </div>
 899
 900         </form>
 901       </div>
 902     );
 903   }
 904 }
 905
 906 class Game extends React.PureComponent {
 907   constructor(props) {
 908     super(props);
 909     this.state = {
 910       game_info: {},
 911       player_info: {},
 912       other_players: [],
 913       prompts: [],
 914       active_prompt: null,
 915       players_answered: new Set(),
 916       players_answering: {},
 917       answering_idle: false,
 918       end_answers_votes: new Set(),
 919       ambiguities: null,
 920       players_judged: new Set(),
 921       players_judging: {},
 922       judging_idle: false,
 923       end_judging_votes: new Set(),
 924       scores: null,
 925       new_game_votes: new Set(),
 926       ready: false
 927     };
 928   }
 929
 930   set_game_info(info) {
 931     this.setState({
 932       game_info: info
 933     });
 934   }
 935
 936   set_player_info(info) {
 937     this.setState({
 938       player_info: info
 939     });
 940   }
 941
 942   set_other_player_info(info) {
 943     const other_players_copy = [...this.state.other_players];
 944     const idx = other_players_copy.findIndex(o => o.id === info.id);
 945     if (idx >= 0) {
 946       other_players_copy[idx] = info;
 947     } else {
 948       other_players_copy.push(info);
 949     }
 950     this.setState({
 951       other_players: other_players_copy
 952     });
 953   }
 954
 955   remove_player(info) {
 956     this.setState({
 957       other_players: this.state.other_players.filter(o => o.id !== info.id)
 958     });
 959   }
 960
 961   reset_game_state() {
 962     this.setState({
 963       prompts: [],
 964       active_prompt: null,
 965       players_answered: new Set(),
 966       players_answering: {},
 967       answering_idle: false,
 968       end_answers_votes: new Set(),
 969       ambiguities: null,
 970       players_judged: new Set(),
 971       players_judging: {},
 972       judging_idle: false,
 973       end_judging_votes: new Set(),
 974       scores: null,
 975       new_game_votes: new Set(),
 976       ready: false
 977     });
 978   }
 979
 980   set_prompts(prompts) {
 981     this.setState({
 982       prompts: prompts
 983     });
 984   }
 985
 986   add_or_update_prompt(prompt) {
 987     const prompts_copy = [...this.state.prompts];
 988     const idx = prompts_copy.findIndex(p => p.id === prompt.id);
 989     if (idx >= 0) {
 990       prompts_copy[idx] = prompt;
 991     } else {
 992       prompts_copy.push(prompt);
 993     }
 994     this.setState({
 995       prompts: prompts_copy
 996     });
 997   }
 998
 999   set_active_prompt(prompt) {
1000     this.setState({
1001       active_prompt: prompt
1002     });
1003   }
1004
1005   set_players_answered(players) {
1006     this.setState({
1007       players_answered: new Set(players)
1008     });
1009   }
1010
1011   set_player_answered(player) {
1012     const new_players_answering = {...this.state.players_answering};
1013     delete new_players_answering[player];
1014
1015     this.setState({
1016       players_answered: new Set([...this.state.players_answered, player]),
1017       players_answering: new_players_answering
1018     });
1019   }
1020
1021   set_players_answering(players) {
1022     const players_answering = {};
1023     for (let player of players) {
1024       players_answering[player] = {active: false};
1025     }
1026     this.setState({
1027       players_answering: players_answering
1028     });
1029   }
1030
1031   set_player_answering(player) {
1032     /* Set the player as actively answering now. */
1033     this.setState({
1034       players_answering: {
1035         ...this.state.players_answering,
1036         [player]: {active: true}
1037       }
1038     });
1039     /* And arrange to have them marked idle very shortly.
1040      *
1041      * Note: This timeout is intentionally very, very short. We only
1042      * need it long enough that the browser has latched onto the state
1043      * change to "active" above. We actually use a CSS transition
1044      * delay to control the user-perceptible length of time after
1045      * which an active player appears inactive.
1046      */
1047     setTimeout(() => {
1048       this.setState({
1049         players_answering: {
1050           ...this.state.players_answering,
1051           [player]: {active: false}
1052         }
1053       });
1054     }, 100);
1055   }
1056
1057   set_answering_idle(value) {
1058     this.setState({
1059       answering_idle: value
1060     });
1061   }
1062
1063   set_end_answers(players) {
1064     this.setState({
1065       end_answers_votes: new Set(players)
1066     });
1067   }
1068
1069   set_player_vote_end_answers(player) {
1070     this.setState({
1071       end_answers_votes: new Set([...this.state.end_answers_votes, player])
1072     });
1073   }
1074
1075   set_player_unvote_end_answers(player) {
1076     this.setState({
1077       end_answers_votes: new Set([...this.state.end_answers_votes].filter(p => p !== player))
1078     });
1079   }
1080
1081   set_ambiguities(ambiguities) {
1082     this.setState({
1083       ambiguities: ambiguities
1084     });
1085   }
1086
1087   set_players_judged(players) {
1088     this.setState({
1089       players_judged: new Set(players)
1090     });
1091   }
1092
1093   set_player_judged(player) {
1094     const new_players_judging = {...this.state.players_judging};
1095     delete new_players_judging[player];
1096
1097     this.setState({
1098       players_judged: new Set([...this.state.players_judged, player]),
1099       players_judging: new_players_judging
1100     });
1101   }
1102
1103   set_players_judging(players) {
1104     const players_judging = {};
1105     for (let player of players) {
1106       players_judging[player] = {active: false};
1107     }
1108     this.setState({
1109       players_judging: players_judging
1110     });
1111   }
1112
1113   set_player_judging(player) {
1114     /* Set the player as actively judging now. */
1115     this.setState({
1116       players_judging: {
1117         ...this.state.players_judging,
1118         [player]: {active: true}
1119       }
1120     });
1121     /* And arrange to have them marked idle very shortly.
1122      *
1123      * Note: This timeout is intentionally very, very short. We only
1124      * need it long enough that the browser has latched onto the state
1125      * change to "active" above. We actually use a CSS transition
1126      * delay to control the user-perceptible length of time after
1127      * which an active player appears inactive.
1128      */
1129     setTimeout(() => {
1130       this.setState({
1131         players_judging: {
1132           ...this.state.players_judging,
1133           [player]: {active: false}
1134         }
1135       });
1136     }, 100);
1137
1138   }
1139
1140   set_judging_idle(value) {
1141     this.setState({
1142       judging_idle: value
1143     });
1144   }
1145
1146   set_end_judging(players) {
1147     this.setState({
1148       end_judging_votes: new Set(players)
1149     });
1150   }
1151
1152   set_player_vote_end_judging(player) {
1153     this.setState({
1154       end_judging_votes: new Set([...this.state.end_judging_votes, player])
1155     });
1156   }
1157
1158   set_player_unvote_end_judging(player) {
1159     this.setState({
1160       end_judging_votes: new Set([...this.state.end_judging_votes].filter(p => p !== player))
1161     });
1162   }
1163
1164   set_scores(scores) {
1165     this.setState({
1166       scores: scores
1167     });
1168   }
1169
1170   set_new_game_votes(players) {
1171     this.setState({
1172       new_game_votes: new Set(players)
1173     });
1174   }
1175
1176   set_player_vote_new_game(player) {
1177     this.setState({
1178       new_game_votes: new Set([...this.state.new_game_votes, player])
1179     });
1180   }
1181
1182   set_player_unvote_new_game(player) {
1183     this.setState({
1184       new_game_votes: new Set([...this.state.new_game_votes].filter(p => p !== player))
1185     });
1186   }
1187
1188   state_ready() {
1189     this.setState({
1190       ready: true
1191     });
1192   }
1193
1194   render() {
1195     const state = this.state;
1196     const players_total = 1 + state.other_players.length;
1197
1198     if (state.scores) {
1199
1200       let perfect_score = 0;
1201       for (let i = 0;
1202            i < state.active_prompt.items &&
1203            i < state.scores.words.length;
1204            i++)
1205       {
1206         perfect_score += state.scores.words[i].players.length;
1207       }
1208
1209       return (
1210         <div className="scores">
1211           <h2>{state.active_prompt.prompt}</h2>
1212           <h2>Scores</h2>
1213           <ul>
1214             {state.scores.scores.map(score => {
1215               let perfect = null;
1216               if (score.score == perfect_score) {
1217                 perfect = <span className="label">Perfect!</span>;
1218               }
1219               return (
1220                 <li key={score.players[0]}>
1221                   {score.players.join("/")}: {score.score} {perfect}
1222                 </li>
1223               );
1224             })}
1225           </ul>
1226           <h2>Words submitted</h2>
1227           <ul>
1228             {state.scores.words.map(word => {
1229               return (
1230                 <li key={word.word}>
1231                   {word.word} ({word.players.length}): {word.players.join(', ')}
1232                 </li>
1233               );
1234             })}
1235           </ul>
1236           <button
1237             className="vote-button"
1238             onClick={() => fetch_post_json(`new-game/${state.active_prompt.id}`) }
1239           >
1240             New Game
1241             <div className="vote-choices">
1242               {[...state.new_game_votes].map(v => {
1243                 return (
1244                   <div
1245                     key={v}
1246                     className="vote-choice"
1247                   >
1248                     {v}
1249                   </div>
1250                 );
1251               })}
1252             </div>
1253           </button>
1254         </div>
1255       );
1256     }
1257
1258     if (state.ambiguities){
1259       return <Ambiguities
1260                prompt={state.active_prompt}
1261                words={state.ambiguities}
1262                player={state.player_info}
1263                players_judged={state.players_judged}
1264                players_judging={state.players_judging}
1265                idle={state.judging_idle}
1266                votes={state.end_judging_votes}
1267              />;
1268     }
1269
1270     if (state.active_prompt) {
1271       return <ActivePrompt
1272                prompt={state.active_prompt}
1273                player={state.player_info}
1274                players_answered={state.players_answered}
1275                players_answering={state.players_answering}
1276                idle={state.answering_idle}
1277                votes={state.end_answers_votes}
1278              />;
1279     }
1280
1281     if (! state.ready)
1282       return null;
1283
1284     return [
1285       <GameInfo
1286         key="game-info"
1287         id={state.game_info.id}
1288         url={state.game_info.url}
1289       />,
1290       <PlayerInfo
1291         key="player-info"
1292         game={this}
1293         player={state.player_info}
1294         other_players={state.other_players}
1295       />,
1296       <p key="spacer"></p>,
1297       <CategoryRequest
1298         key="category-request"
1299       />,
1300       <PromptOptions
1301         key="prompts"
1302         prompts={state.prompts}
1303         player={state.player_info}
1304       />,
1305       <LetsPlay
1306         key="lets-play"
1307         num_players={1+state.other_players.length}
1308         prompts={state.prompts}
1309       />
1310     ];
1311   }
1312 }
1313
1314 ReactDOM.render(<Game
1315                   ref={(me) => window.game = me}
1316                 />, document.getElementById("empathy"));