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-update", event => {
  49   const info = JSON.parse(event.data);
  50
  51   if (info.id === window.game.state.player_info.id)
  52     window.game.set_player_info(info);
  53   else
  54     window.game.set_other_player_info(info);
  55 });
  56
  57 events.addEventListener("game-state", event => {
  58   const state = JSON.parse(event.data);
  59
  60   window.game.reset_game_state();
  61
  62   window.game.set_prompts(state.prompts);
  63
  64   window.game.set_active_prompt(state.active_prompt);
  65
  66   window.game.set_scores(state.scores);
  67
  68   window.game.set_ambiguities(state.ambiguities);
  69 });
  70
  71 events.addEventListener("prompt", event => {
  72   const prompt = JSON.parse(event.data);
  73
  74   window.game.add_or_update_prompt(prompt);
  75 });
  76
  77 events.addEventListener("start", event => {
  78   const prompt = JSON.parse(event.data);
  79
  80   window.game.set_active_prompt(prompt);
  81 });
  82
  83 events.addEventListener("player-answered", event => {
  84   const player = JSON.parse(event.data);
  85
  86   window.game.set_player_answered(player);
  87 });
  88
  89 events.addEventListener("player-answering", event => {
  90   const player = JSON.parse(event.data);
  91
  92   window.game.set_player_answering(player);
  93 });
  94
  95 events.addEventListener("vote-end-answers", event => {
  96   const player = JSON.parse(event.data);
  97
  98   window.game.set_player_vote_end_answers(player);
  99 });
 100
 101 events.addEventListener("unvote-end-answers", event => {
 102   const player = JSON.parse(event.data);
 103
 104   window.game.set_player_unvote_end_answers(player);
 105 });
 106
 107 events.addEventListener("ambiguities", event => {
 108   const ambiguities = JSON.parse(event.data);
 109
 110   window.game.set_ambiguities(ambiguities);
 111 });
 112
 113 events.addEventListener("player-judged", event => {
 114   const player = JSON.parse(event.data);
 115
 116   window.game.set_player_judged(player);
 117 });
 118
 119 events.addEventListener("player-judging", event => {
 120   const player = JSON.parse(event.data);
 121
 122   window.game.set_player_judging(player);
 123 });
 124
 125 events.addEventListener("vote-end-judging", event => {
 126   const player = JSON.parse(event.data);
 127
 128   window.game.set_player_vote_end_judging(player);
 129 });
 130
 131 events.addEventListener("unvote-end-judging", event => {
 132   const player = JSON.parse(event.data);
 133
 134   window.game.set_player_unvote_end_judging(player);
 135 });
 136
 137 events.addEventListener("scores", event => {
 138   const scores = JSON.parse(event.data);
 139
 140   window.game.set_scores(scores);
 141 });
 142
 143 /*********************************************************
 144  * Game and supporting classes                           *
 145  *********************************************************/
 146
 147 function copy_to_clipboard(id)
 148 {
 149   const tmp = document.createElement("input");
 150   tmp.setAttribute("value", document.getElementById(id).innerHTML);
 151   document.body.appendChild(tmp);
 152   tmp.select();
 153   document.execCommand("copy");
 154   document.body.removeChild(tmp);
 155 }
 156
 157 const GameInfo = React.memo(props => {
 158   if (! props.id)
 159     return null;
 160
 161   return (
 162     <div className="game-info">
 163       <span className="game-id">{props.id}</span>
 164       {" "}
 165       Share this link to invite friends:{" "}
 166       <span id="game-share-url">{props.url}</span>
 167       {" "}
 168       <button
 169         className="inline"
 170         onClick={() => copy_to_clipboard('game-share-url')}
 171       >Copy Link</button>
 172     </div>
 173   );
 174 });
 175
 176 const PlayerInfo = React.memo(props => {
 177   if (! props.player.id)
 178     return null;
 179
 180   return (
 181     <div className="player-info">
 182       <span className="players-header">Players: </span>
 183       {props.player.name}
 184       {props.player.score > 0 ? ` (${props.player.score})` : ""}
 185       {props.other_players.map(other => (
 186         <span key={other.id}>
 187           {", "}
 188           {other.name}
 189           {other.score > 0 ? ` (${other.score})` : ""}
 190         </span>
 191       ))}
 192     </div>
 193   );
 194 });
 195
 196 function fetch_method_json(method, api = '', data = {}) {
 197   const response = fetch(api, {
 198     method: method,
 199     headers: {
 200       'Content-Type': 'application/json'
 201     },
 202     body: JSON.stringify(data)
 203   });
 204   return response;
 205 }
 206
 207 function fetch_post_json(api = '', data = {}) {
 208   return fetch_method_json('POST', api, data);
 209 }
 210
 211 async function fetch_put_json(api = '', data = {}) {
 212   return fetch_method_json('PUT', api, data);
 213 }
 214
 215 class CategoryRequest extends React.PureComponent {
 216   constructor(props) {
 217     super(props);
 218     this.category = React.createRef();
 219
 220     this.handle_change = this.handle_change.bind(this);
 221     this.handle_submit = this.handle_submit.bind(this);
 222   }
 223
 224   handle_change(event) {
 225     const category_input = this.category.current;
 226     const category = category_input.value;
 227
 228     const match = category.match(/[0-9]+/);
 229     if (match) {
 230       const num_items = parseInt(match[0], 10);
 231       if (num_items <= MAX_PROMPT_ITEMS)
 232         category_input.setCustomValidity("");
 233     }
 234   }
 235
 236   async handle_submit(event) {
 237     const form = event.currentTarget;
 238     const category_input = this.category.current;
 239     const category = category_input.value;
 240
 241     /* Prevent the default page-changing form-submission behavior. */
 242     event.preventDefault();
 243
 244     const match = category.match(/[0-9]+/);
 245     if (match === null) {
 246       category_input.setCustomValidity("Category must include a number");
 247       form.reportValidity();
 248       return;
 249     }
 250
 251     const num_items = parseInt(match[0], 10);
 252
 253     if (num_items > MAX_PROMPT_ITEMS) {
 254       category_input.setCustomValidity(`Maximum number of items is ${MAX_PROMPT_ITEMS}`);
 255       form.reportValidity();
 256       return;
 257     }
 258
 259     const response = await fetch_post_json("prompts", {
 260       items: num_items,
 261       prompt: category
 262     });
 263
 264     if (response.status === 200) {
 265       const result = await response.json();
 266       if (! result.valid) {
 267         add_message("danger", result.message);
 268         return;
 269       }
 270     } else {
 271       add_message("danger", "An error occurred submitting your category");
 272     }
 273
 274     form.reset();
 275   }
 276
 277   render() {
 278     return (
 279       <div className="category-request">
 280         <h2>Submit a Category</h2>
 281         <p>
 282           Suggest a category to play. Don't forget to include the
 283           number of items for each person to submit.
 284         </p>
 285
 286         <form onSubmit={this.handle_submit} >
 287           <div className="form-field large">
 288             <input
 289               type="text"
 290               id="category"
 291               placeholder="6 things at the beach"
 292               required
 293               autoComplete="off"
 294               onChange={this.handle_change}
 295               ref={this.category}
 296             />
 297           </div>
 298
 299           <div className="form-field large">
 300             <button type="submit">
 301               Send
 302             </button>
 303           </div>
 304
 305         </form>
 306       </div>
 307     );
 308   }
 309 }
 310
 311 const PromptOptions = React.memo(props => {
 312
 313   if (props.prompts.length === 0)
 314     return null;
 315
 316   return (
 317     <div className="prompt-options">
 318       <h2>Vote on Categories</h2>
 319       <p>
 320         Select any categories below that you'd like to play.
 321         You can choose as many as you'd like.
 322       </p>
 323       {props.prompts.map(p => {
 324         return (
 325           <button
 326             className="vote-button"
 327             key={p.id}
 328             onClick={() => fetch_post_json(`vote/${p.id}`) }
 329           >
 330             {p.prompt}
 331             <div className="vote-choices">
 332               {p.votes.map(v => {
 333                 return (
 334                   <div
 335                     key={v}
 336                     className="vote-choice"
 337                   >
 338                     {v}
 339                   </div>
 340                 );
 341               })}
 342             </div>
 343           </button>
 344         );
 345       })}
 346     </div>
 347   );
 348 });
 349
 350 const LetsPlay = React.memo(props => {
 351
 352   const quorum = Math.round((props.num_players + 1) / 2);
 353   const max_votes = props.prompts.reduce(
 354     (max_so_far, v) => Math.max(max_so_far, v.votes.length), 0);
 355
 356   if (max_votes < quorum)
 357     return null;
 358
 359   const candidates = props.prompts.filter(p => p.votes.length >= quorum);
 360   const index = Math.floor(Math.random() * candidates.length);
 361   const winner = candidates[index];
 362
 363   return (
 364     <div className="lets-play">
 365       <h2>Let's Play</h2>
 366       <p>
 367         That should be enough voting. If you're not waiting for any
 368         other players to join, then let's start.
 369       </p>
 370       <button
 371         className="lets-play"
 372         onClick={() => fetch_post_json(`start/${winner.id}`) }
 373       >
 374         Start Game
 375       </button>
 376     </div>
 377   );
 378 });
 379
 380 class Ambiguities extends React.PureComponent {
 381
 382   constructor(props) {
 383     super(props);
 384
 385     const word_sets = props.words.map(word => {
 386       const set = new Set();
 387       set.add(word);
 388       return set;
 389     });
 390
 391     this.state = {
 392       word_sets: word_sets,
 393       submitted: false,
 394       selected: null
 395     };
 396
 397     this.judging_sent_recently = false;
 398   }
 399
 400   async handle_submit() {
 401     const response = await fetch_post_json(
 402       `judged/${this.props.prompt.id}`,{
 403         word_groups: this.state.word_sets.map(set => Array.from(set))
 404       }
 405     );
 406
 407     if (response.status === 200) {
 408       const result = await response.json();
 409       if (! result.valid) {
 410         add_message("danger", result.message);
 411         return;
 412       }
 413     } else {
 414       add_message("danger", "An error occurred submitting the results of your judging");
 415       return;
 416     }
 417
 418     this.setState({
 419       submitted: true
 420     });
 421   }
 422
 423   handle_click(word) {
 424
 425     /* Let the server know we are doing some judging, (but rate limit
 426      * this so we don't send a "judging" notification more frquently
 427      * than necessary.
 428      */
 429     if (! this.judging_sent_recently) {
 430       fetch_post_json(`judging/${this.props.prompt.id}`);
 431       this.judging_sent_recently = true;
 432       setTimeout(() => { this.judging_sent_recently = false; }, 1000);
 433     }
 434
 435     if (this.state.selected == word) {
 436       /* Second click on same word removes the word from the group. */
 437       const idx = this.state.word_sets.findIndex(s => s.has(word));
 438       const set = this.state.word_sets[idx];
 439       if (set.size === 1) {
 440         /* When the word is already alone, there's nothing to do but
 441          * to un-select it. */
 442         this.setState({
 443           selected: null
 444         });
 445         return;
 446       }
 447
 448       const new_set = new Set([...set].filter(w => w !== word));
 449       this.setState({
 450         selected: null,
 451         word_sets: [...this.state.word_sets.slice(0, idx),
 452                     new_set,
 453                     new Set().add(word),
 454                     ...this.state.word_sets.slice(idx+1)]
 455       });
 456     } else if (this.state.selected) {
 457       /* Click of a second word groups the two together. */
 458       const idx1 = this.state.word_sets.findIndex(s => s.has(this.state.selected));
 459       const idx2 = this.state.word_sets.findIndex(s => s.has(word));
 460       const set1 = this.state.word_sets[idx1];
 461       const set2 = this.state.word_sets[idx2];
 462       const new_set = new Set([...set2, ...set1]);
 463       if (idx1 < idx2) {
 464         this.setState({
 465           selected: null,
 466           word_sets: [...this.state.word_sets.slice(0, idx1),
 467                       ...this.state.word_sets.slice(idx1 + 1, idx2),
 468                       new_set,
 469                       ...this.state.word_sets.slice(idx2 + 1)]
 470         });
 471       } else {
 472         this.setState({
 473           selected: null,
 474           word_sets: [...this.state.word_sets.slice(0, idx2),
 475                       new_set,
 476                       ...this.state.word_sets.slice(idx2 + 1, idx1),
 477                       ...this.state.word_sets.slice(idx1 + 1)]
 478         });
 479       }
 480     } else {
 481       /* First click of a word selects it. */
 482       this.setState({
 483         selected: word
 484       });
 485     }
 486   }
 487
 488   render() {
 489     if (this.state.submitted)
 490       return (
 491         <div className="please-wait">
 492           <h2>Submission received</h2>
 493           <p>
 494             The following players have completed judging:
 495             {[...this.props.players_judged].join(', ')}
 496           </p>
 497           <p>
 498             Still waiting for the following players:
 499           </p>
 500           <ul>
 501             {Object.keys(this.props.players_judging).map(player => {
 502               return (
 503                 <li
 504                   key={player}
 505                 >
 506                   {player}
 507                   {this.props.players_judging[player] ?
 508                    <span className="typing"/> : null }
 509                 </li>
 510               );
 511             })}
 512           </ul>
 513           <button
 514             className="vote-button"
 515             onClick={() => fetch_post_json(`end-judging/${this.props.prompt.id}`) }
 516           >
 517             Move On
 518             <div className="vote-choices">
 519               {[...this.props.votes].map(v => {
 520                 return (
 521                   <div
 522                     key={v}
 523                     className="vote-choice"
 524                   >
 525                     {v}
 526                   </div>
 527                 );
 528               })}
 529             </div>
 530           </button>
 531
 532         </div>
 533       );
 534
 535     const btn_class = "ambiguity-button";
 536     const btn_selected_class = btn_class + " selected";
 537
 538     return (
 539       <div className="ambiguities">
 540         <h2>Judging Answers</h2>
 541         <p>
 542           Click on each pair of answers that should be scored as equivalent,
 543           (and click any word twice to split it out from a group). Remember,
 544           what goes around comes around, so it's best to be generous when
 545           judging.
 546         </p>
 547         {this.state.word_sets.map(set => {
 548           return (
 549             <div
 550               className="ambiguity-group"
 551               key={Array.from(set)[0]}
 552             >
 553               {Array.from(set).map(word => {
 554                 return (
 555                   <button
 556                     className={this.state.selected === word ?
 557                                btn_selected_class : btn_class }
 558                     key={word}
 559                     onClick={() => this.handle_click(word)}
 560                   >
 561                     {word}
 562                   </button>
 563                 );
 564               })}
 565             </div>
 566           );
 567         })}
 568         <p>
 569           Click here when done judging:<br/>
 570           <button
 571             onClick={() => this.handle_submit()}
 572           >
 573             Send
 574           </button>
 575         </p>
 576       </div>
 577     );
 578   }
 579 }
 580
 581 class ActivePrompt extends React.PureComponent {
 582
 583   constructor(props) {
 584     super(props);
 585     const items = props.prompt.items;
 586
 587     this.state = {
 588       submitted: false
 589     };
 590
 591     this.answers = [...Array(items)].map(() => React.createRef());
 592     this.answering_sent_recently = false;
 593
 594     this.handle_submit = this.handle_submit.bind(this);
 595     this.handle_change = this.handle_change.bind(this);
 596   }
 597
 598   handle_change(event) {
 599     /* We don't care (or even look) at what the player is typing at
 600      * this point. We simply want to be informed that the player _is_
 601      * typing so that we can tell the server (which will tell other
 602      * players) that there is activity here.
 603      */
 604
 605     /* Rate limit so that we don't send an "answering" notification
 606      * more frequently than necessary.
 607      */
 608     if (! this.answering_sent_recently) {
 609       fetch_post_json(`answering/${this.props.prompt.id}`);
 610       this.answering_sent_recently = true;
 611       setTimeout(() => { this.answering_sent_recently = false; }, 1000);
 612     }
 613   }
 614
 615   async handle_submit(event) {
 616     const form = event.currentTarget;
 617
 618     /* Prevent the default page-changing form-submission behavior. */
 619     event.preventDefault();
 620
 621     const response = await fetch_post_json(`answer/${this.props.prompt.id}`, {
 622       answers: this.answers.map(r => r.current.value)
 623     });
 624     if (response.status === 200) {
 625       const result = await response.json();
 626       if (! result.valid) {
 627         add_message("danger", result.message);
 628         return;
 629       }
 630     } else {
 631       add_message("danger", "An error occurred submitting your answers");
 632       return;
 633     }
 634
 635     /* Everything worked. Server is happy with our answers. */
 636     form.reset();
 637     this.setState({
 638         submitted: true
 639     });
 640   }
 641
 642   render() {
 643     if (this.state.submitted)
 644       return (
 645         <div className="please-wait">
 646           <h2>Submission received</h2>
 647           <p>
 648             The following players have submitted their answers:
 649             {[...this.props.players_answered].join(', ')}
 650           </p>
 651           <p>
 652           Still waiting for the following players:
 653           </p>
 654           <ul>
 655             {Object.keys(this.props.players_answering).map(player => {
 656               return (
 657                 <li
 658                   key={player}
 659                 >
 660                   {player}
 661                   {this.props.players_answering[player] ?
 662                    <span className="typing"/> : null }
 663                 </li>
 664               );
 665             })}
 666           </ul>
 667           <button
 668             className="vote-button"
 669             onClick={() => fetch_post_json(`end-answers/${this.props.prompt.id}`) }
 670           >
 671             Move On
 672             <div className="vote-choices">
 673               {[...this.props.votes].map(v => {
 674                 return (
 675                   <div
 676                     key={v}
 677                     className="vote-choice"
 678                   >
 679                     {v}
 680                   </div>
 681                 );
 682               })}
 683             </div>
 684           </button>
 685
 686         </div>
 687       );
 688
 689     return (
 690       <div className="active-prompt">
 691         <h2>The Game of Empathy</h2>
 692         <p>
 693           Remember, you're trying to match your answers with
 694           what the other players submit.
 695           Give {this.props.prompt.items} answers for the following prompt:
 696         </p>
 697         <h2>{this.props.prompt.prompt}</h2>
 698         <form onSubmit={this.handle_submit}>
 699           {[...Array(this.props.prompt.items)].map((whocares,i) => {
 700             return (
 701               <div
 702                 key={i}
 703                 className="form-field large">
 704                 <input
 705                   type="text"
 706                   name={`answer_${i}`}
 707                   required
 708                   autoComplete="off"
 709                   onChange={this.handle_change}
 710                   ref={this.answers[i]}
 711                 />
 712               </div>
 713             );
 714           })}
 715
 716           <div
 717             key="submit-button"
 718             className="form-field large">
 719             <button type="submit">
 720               Send
 721             </button>
 722           </div>
 723
 724         </form>
 725       </div>
 726     );
 727   }
 728 }
 729
 730 class Game extends React.PureComponent {
 731   constructor(props) {
 732     super(props);
 733     this.state = {
 734       game_info: {},
 735       player_info: {},
 736       other_players: [],
 737       prompts: [],
 738       active_prompt: null,
 739       players_answered: new Set(),
 740       players_answering: {},
 741       end_answers_votes: new Set(),
 742       ambiguities: null,
 743       players_judged: new Set(),
 744       players_judging: {},
 745       end_judging_votes: new Set(),
 746       scores: null
 747     };
 748   }
 749
 750   set_game_info(info) {
 751     this.setState({
 752       game_info: info
 753     });
 754   }
 755
 756   set_player_info(info) {
 757     this.setState({
 758       player_info: info
 759     });
 760   }
 761
 762   set_other_player_info(info) {
 763     const other_players_copy = [...this.state.other_players];
 764     const idx = other_players_copy.findIndex(o => o.id === info.id);
 765     if (idx >= 0) {
 766       other_players_copy[idx] = info;
 767     } else {
 768       other_players_copy.push(info);
 769     }
 770     this.setState({
 771       other_players: other_players_copy
 772     });
 773   }
 774
 775   reset_game_state() {
 776     this.setState({
 777       prompts: [],
 778       active_prompt: null,
 779       players_answered: new Set(),
 780       players_answering: {},
 781       end_answers_votes: new Set(),
 782       ambiguities: null,
 783       players_judged: new Set(),
 784       players_judging: {},
 785       end_judging_votes: new Set(),
 786       scores: null
 787     });
 788   }
 789
 790   set_prompts(prompts) {
 791     this.setState({
 792       prompts: prompts
 793     });
 794   }
 795
 796   add_or_update_prompt(prompt) {
 797     const prompts_copy = [...this.state.prompts];
 798     const idx = prompts_copy.findIndex(p => p.id === prompt.id);
 799     if (idx >= 0) {
 800       prompts_copy[idx] = prompt;
 801     } else {
 802       prompts_copy.push(prompt);
 803     }
 804     this.setState({
 805       prompts: prompts_copy
 806     });
 807   }
 808
 809   set_active_prompt(prompt) {
 810     this.setState({
 811       active_prompt: prompt
 812     });
 813   }
 814
 815   set_player_answered(player) {
 816     const new_players_answering = {...this.state.players_answering};
 817     delete new_players_answering[player];
 818
 819     this.setState({
 820       players_answered: new Set([...this.state.players_answered, player]),
 821       players_answering: new_players_answering
 822     });
 823   }
 824
 825   set_player_answering(player) {
 826     this.setState({
 827       players_answering: {
 828         ...this.state.players_answering,
 829         [player]: {active: true}
 830       }
 831     });
 832   }
 833
 834   set_player_vote_end_answers(player) {
 835     this.setState({
 836       end_answers_votes: new Set([...this.state.end_answers_votes, player])
 837     });
 838   }
 839
 840   set_player_unvote_end_answers(player) {
 841     this.setState({
 842       end_answers_votes: new Set([...this.state.end_answers_votes].filter(p => p !== player))
 843     });
 844   }
 845
 846   set_ambiguities(ambiguities) {
 847     this.setState({
 848       ambiguities: ambiguities
 849     });
 850   }
 851
 852   set_player_judged(player) {
 853     const new_players_judging = {...this.state.players_judging};
 854     delete new_players_judging[player];
 855
 856     this.setState({
 857       players_judged: new Set([...this.state.players_judged, player]),
 858       players_judging: new_players_judging
 859     });
 860   }
 861
 862   set_player_judging(player) {
 863     this.setState({
 864       players_judging: {
 865         ...this.state.players_judging,
 866         [player]: {active: true}
 867       }
 868     });
 869   }
 870
 871
 872   set_player_vote_end_judging(player) {
 873     this.setState({
 874       end_judging_votes: new Set([...this.state.end_judging_votes, player])
 875     });
 876   }
 877
 878   set_player_unvote_end_judging(player) {
 879     this.setState({
 880       end_judging_votes: new Set([...this.state.end_judging_votes].filter(p => p !== player))
 881     });
 882   }
 883
 884   set_scores(scores) {
 885     this.setState({
 886       scores: scores
 887     });
 888   }
 889
 890   render() {
 891     const state = this.state;
 892     const players_total = 1 + state.other_players.length;
 893
 894     if (state.scores) {
 895       return (
 896         <div className="scores">
 897           <h2>Scores</h2>
 898           <ul>
 899             {state.scores.scores.map(score => {
 900               return (
 901                 <li key={score.player}>
 902                   {score.player}: {score.score}
 903                 </li>
 904               );
 905             })}
 906           </ul>
 907           <h2>Words submitted</h2>
 908           <ul>
 909             {state.scores.words.map(word => {
 910               return (
 911                 <li key={word.word}>
 912                   {`${word.word}: ${word.players.join(', ')}`}
 913                 </li>
 914               );
 915             })}
 916           </ul>
 917           <button
 918             className="new-game"
 919             onClick={() => fetch_post_json('reset') }
 920           >
 921             New Game
 922           </button>
 923         </div>
 924       );
 925     }
 926
 927     if (state.ambiguities){
 928       return <Ambiguities
 929                prompt={state.active_prompt}
 930                words={state.ambiguities}
 931                players_judged={state.players_judged}
 932                players_judging={state.players_judging}
 933                votes={state.end_judging_votes}
 934              />;
 935     }
 936
 937     if (state.active_prompt) {
 938       return <ActivePrompt
 939                prompt={state.active_prompt}
 940                players_answered={state.players_answered}
 941                players_answering={state.players_answering}
 942                votes={state.end_answers_votes}
 943              />;
 944     }
 945
 946     return [
 947       <GameInfo
 948         key="game-info"
 949         id={state.game_info.id}
 950         url={state.game_info.url}
 951       />,
 952       <PlayerInfo
 953         key="player-info"
 954         game={this}
 955         player={state.player_info}
 956         other_players={state.other_players}
 957       />,
 958       <p key="spacer"></p>,
 959       <CategoryRequest
 960         key="category-request"
 961       />,
 962       <PromptOptions
 963         key="prompts"
 964         prompts={state.prompts}
 965       />,
 966       <LetsPlay
 967         key="lets-play"
 968         num_players={1+state.other_players.length}
 969         prompts={state.prompts}
 970       />
 971     ];
 972   }
 973 }
 974
 975 ReactDOM.render(<Game
 976                   ref={(me) => window.game = me}
 977                 />, document.getElementById("empathy"));