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         return;
 441       const new_set = new Set([...set].filter(w => w !== word));
 442       this.setState({
 443         selected: null,
 444         word_sets: [...this.state.word_sets.slice(0, idx),
 445                     new_set,
 446                     new Set().add(word),
 447                     ...this.state.word_sets.slice(idx+1)]
 448       });
 449     } else if (this.state.selected) {
 450       /* Click of a second word groups the two together. */
 451       const idx1 = this.state.word_sets.findIndex(s => s.has(this.state.selected));
 452       const idx2 = this.state.word_sets.findIndex(s => s.has(word));
 453       const set1 = this.state.word_sets[idx1];
 454       const set2 = this.state.word_sets[idx2];
 455       const new_set = new Set([...set2, ...set1]);
 456       if (idx1 < idx2) {
 457         this.setState({
 458           selected: null,
 459           word_sets: [...this.state.word_sets.slice(0, idx1),
 460                       ...this.state.word_sets.slice(idx1 + 1, idx2),
 461                       new_set,
 462                       ...this.state.word_sets.slice(idx2 + 1)]
 463         });
 464       } else {
 465         this.setState({
 466           selected: null,
 467           word_sets: [...this.state.word_sets.slice(0, idx2),
 468                       new_set,
 469                       ...this.state.word_sets.slice(idx2 + 1, idx1),
 470                       ...this.state.word_sets.slice(idx1 + 1)]
 471         });
 472       }
 473     } else {
 474       /* First click of a word selects it. */
 475       this.setState({
 476         selected: word
 477       });
 478     }
 479   }
 480
 481   render() {
 482     if (this.state.submitted)
 483       return (
 484         <div className="please-wait">
 485           <h2>Submission received</h2>
 486           <p>
 487             The following players have completed judging:
 488             {[...this.props.players_judged].join(', ')}
 489           </p>
 490           <p>
 491             Still waiting for the following players:
 492           </p>
 493           <ul>
 494             {Object.keys(this.props.players_judging).map(player => {
 495               return (
 496                 <li
 497                   key={player}
 498                 >
 499                   {player}
 500                   {this.props.players_judging[player] ?
 501                    <span className="typing"/> : null }
 502                 </li>
 503               );
 504             })}
 505           </ul>
 506           <button
 507             className="vote-button"
 508             onClick={() => fetch_post_json(`end-judging/${this.props.prompt.id}`) }
 509           >
 510             Move On
 511             <div className="vote-choices">
 512               {[...this.props.votes].map(v => {
 513                 return (
 514                   <div
 515                     key={v}
 516                     className="vote-choice"
 517                   >
 518                     {v}
 519                   </div>
 520                 );
 521               })}
 522             </div>
 523           </button>
 524
 525         </div>
 526       );
 527
 528     const btn_class = "ambiguity-button";
 529     const btn_selected_class = btn_class + " selected";
 530
 531     return (
 532       <div className="ambiguities">
 533         <h2>Judging Answers</h2>
 534         <p>
 535           Click on each pair of answers that should be scored as equivalent,
 536           (and click any word twice to split it out from a group). Remember,
 537           what goes around comes around, so it's best to be generous when
 538           judging.
 539         </p>
 540         {this.state.word_sets.map(set => {
 541           return (
 542             <div
 543               className="ambiguity-group"
 544               key={Array.from(set)[0]}
 545             >
 546               {Array.from(set).map(word => {
 547                 return (
 548                   <button
 549                     className={this.state.selected === word ?
 550                                btn_selected_class : btn_class }
 551                     key={word}
 552                     onClick={() => this.handle_click(word)}
 553                   >
 554                     {word}
 555                   </button>
 556                 );
 557               })}
 558             </div>
 559           );
 560         })}
 561         <p>
 562           Click here when done judging:<br/>
 563           <button
 564             onClick={() => this.handle_submit()}
 565           >
 566             Send
 567           </button>
 568         </p>
 569       </div>
 570     );
 571   }
 572 }
 573
 574 class ActivePrompt extends React.PureComponent {
 575
 576   constructor(props) {
 577     super(props);
 578     const items = props.prompt.items;
 579
 580     this.state = {
 581       submitted: false
 582     };
 583
 584     this.answers = [...Array(items)].map(() => React.createRef());
 585     this.answering_sent_recently = false;
 586
 587     this.handle_submit = this.handle_submit.bind(this);
 588     this.handle_change = this.handle_change.bind(this);
 589   }
 590
 591   handle_change(event) {
 592     /* We don't care (or even look) at what the player is typing at
 593      * this point. We simply want to be informed that the player _is_
 594      * typing so that we can tell the server (which will tell other
 595      * players) that there is activity here.
 596      */
 597
 598     /* Rate limit so that we don't send an "answering" notification
 599      * more frequently than necessary.
 600      */
 601     if (! this.answering_sent_recently) {
 602       fetch_post_json(`answering/${this.props.prompt.id}`);
 603       this.answering_sent_recently = true;
 604       setTimeout(() => { this.answering_sent_recently = false; }, 1000);
 605     }
 606   }
 607
 608   async handle_submit(event) {
 609     const form = event.currentTarget;
 610
 611     /* Prevent the default page-changing form-submission behavior. */
 612     event.preventDefault();
 613
 614     const response = await fetch_post_json(`answer/${this.props.prompt.id}`, {
 615       answers: this.answers.map(r => r.current.value)
 616     });
 617     if (response.status === 200) {
 618       const result = await response.json();
 619       if (! result.valid) {
 620         add_message("danger", result.message);
 621         return;
 622       }
 623     } else {
 624       add_message("danger", "An error occurred submitting your answers");
 625       return;
 626     }
 627
 628     /* Everything worked. Server is happy with our answers. */
 629     form.reset();
 630     this.setState({
 631         submitted: true
 632     });
 633   }
 634
 635   render() {
 636     if (this.state.submitted)
 637       return (
 638         <div className="please-wait">
 639           <h2>Submission received</h2>
 640           <p>
 641             The following players have submitted their answers:
 642             {[...this.props.players_answered].join(', ')}
 643           </p>
 644           <p>
 645           Still waiting for the following players:
 646           </p>
 647           <ul>
 648             {Object.keys(this.props.players_answering).map(player => {
 649               return (
 650                 <li
 651                   key={player}
 652                 >
 653                   {player}
 654                   {this.props.players_answering[player] ?
 655                    <span className="typing"/> : null }
 656                 </li>
 657               );
 658             })}
 659           </ul>
 660           <button
 661             className="vote-button"
 662             onClick={() => fetch_post_json(`end-answers/${this.props.prompt.id}`) }
 663           >
 664             Move On
 665             <div className="vote-choices">
 666               {[...this.props.votes].map(v => {
 667                 return (
 668                   <div
 669                     key={v}
 670                     className="vote-choice"
 671                   >
 672                     {v}
 673                   </div>
 674                 );
 675               })}
 676             </div>
 677           </button>
 678
 679         </div>
 680       );
 681
 682     return (
 683       <div className="active-prompt">
 684         <h2>The Game of Empathy</h2>
 685         <p>
 686           Remember, you're trying to match your answers with
 687           what the other players submit.
 688           Give {this.props.prompt.items} answers for the following prompt:
 689         </p>
 690         <h2>{this.props.prompt.prompt}</h2>
 691         <form onSubmit={this.handle_submit}>
 692           {[...Array(this.props.prompt.items)].map((whocares,i) => {
 693             return (
 694               <div
 695                 key={i}
 696                 className="form-field large">
 697                 <input
 698                   type="text"
 699                   name={`answer_${i}`}
 700                   required
 701                   autoComplete="off"
 702                   onChange={this.handle_change}
 703                   ref={this.answers[i]}
 704                 />
 705               </div>
 706             );
 707           })}
 708
 709           <div
 710             key="submit-button"
 711             className="form-field large">
 712             <button type="submit">
 713               Send
 714             </button>
 715           </div>
 716
 717         </form>
 718       </div>
 719     );
 720   }
 721 }
 722
 723 class Game extends React.PureComponent {
 724   constructor(props) {
 725     super(props);
 726     this.state = {
 727       game_info: {},
 728       player_info: {},
 729       other_players: [],
 730       prompts: [],
 731       active_prompt: null,
 732       players_answered: new Set(),
 733       players_answering: {},
 734       end_answers_votes: new Set(),
 735       ambiguities: null,
 736       players_judged: new Set(),
 737       players_judging: {},
 738       end_judging_votes: new Set(),
 739       scores: null
 740     };
 741   }
 742
 743   set_game_info(info) {
 744     this.setState({
 745       game_info: info
 746     });
 747   }
 748
 749   set_player_info(info) {
 750     this.setState({
 751       player_info: info
 752     });
 753   }
 754
 755   set_other_player_info(info) {
 756     const other_players_copy = [...this.state.other_players];
 757     const idx = other_players_copy.findIndex(o => o.id === info.id);
 758     if (idx >= 0) {
 759       other_players_copy[idx] = info;
 760     } else {
 761       other_players_copy.push(info);
 762     }
 763     this.setState({
 764       other_players: other_players_copy
 765     });
 766   }
 767
 768   reset_game_state() {
 769     this.setState({
 770       prompts: [],
 771       active_prompt: null,
 772       players_answered: new Set(),
 773       players_answering: {},
 774       end_answers_votes: new Set(),
 775       ambiguities: null,
 776       players_judged: new Set(),
 777       players_judging: {},
 778       end_judging_votes: new Set(),
 779       scores: null
 780     });
 781   }
 782
 783   set_prompts(prompts) {
 784     this.setState({
 785       prompts: prompts
 786     });
 787   }
 788
 789   add_or_update_prompt(prompt) {
 790     const prompts_copy = [...this.state.prompts];
 791     const idx = prompts_copy.findIndex(p => p.id === prompt.id);
 792     if (idx >= 0) {
 793       prompts_copy[idx] = prompt;
 794     } else {
 795       prompts_copy.push(prompt);
 796     }
 797     this.setState({
 798       prompts: prompts_copy
 799     });
 800   }
 801
 802   set_active_prompt(prompt) {
 803     this.setState({
 804       active_prompt: prompt
 805     });
 806   }
 807
 808   set_player_answered(player) {
 809     const new_players_answering = {...this.state.players_answering};
 810     delete new_players_answering[player];
 811
 812     this.setState({
 813       players_answered: new Set([...this.state.players_answered, player]),
 814       players_answering: new_players_answering
 815     });
 816   }
 817
 818   set_player_answering(player) {
 819     this.setState({
 820       players_answering: {
 821         ...this.state.players_answering,
 822         [player]: {active: true}
 823       }
 824     });
 825   }
 826
 827   set_player_vote_end_answers(player) {
 828     this.setState({
 829       end_answers_votes: new Set([...this.state.end_answers_votes, player])
 830     });
 831   }
 832
 833   set_player_unvote_end_answers(player) {
 834     this.setState({
 835       end_answers_votes: new Set([...this.state.end_answers_votes].filter(p => p !== player))
 836     });
 837   }
 838
 839   set_ambiguities(ambiguities) {
 840     this.setState({
 841       ambiguities: ambiguities
 842     });
 843   }
 844
 845   set_player_judged(player) {
 846     const new_players_judging = {...this.state.players_judging};
 847     delete new_players_judging[player];
 848
 849     this.setState({
 850       players_judged: new Set([...this.state.players_judged, player]),
 851       players_judging: new_players_judging
 852     });
 853   }
 854
 855   set_player_judging(player) {
 856     this.setState({
 857       players_judging: {
 858         ...this.state.players_judging,
 859         [player]: {active: true}
 860       }
 861     });
 862   }
 863
 864
 865   set_player_vote_end_judging(player) {
 866     this.setState({
 867       end_judging_votes: new Set([...this.state.end_judging_votes, player])
 868     });
 869   }
 870
 871   set_player_unvote_end_judging(player) {
 872     this.setState({
 873       end_judging_votes: new Set([...this.state.end_judging_votes].filter(p => p !== player))
 874     });
 875   }
 876
 877   set_scores(scores) {
 878     this.setState({
 879       scores: scores
 880     });
 881   }
 882
 883   render() {
 884     const state = this.state;
 885     const players_total = 1 + state.other_players.length;
 886
 887     if (state.scores) {
 888       return (
 889         <div className="scores">
 890           <h2>Scores</h2>
 891           <ul>
 892             {state.scores.scores.map(score => {
 893               return (
 894                 <li key={score.player}>
 895                   {score.player}: {score.score}
 896                 </li>
 897               );
 898             })}
 899           </ul>
 900           <h2>Words submitted</h2>
 901           <ul>
 902             {state.scores.words.map(word => {
 903               return (
 904                 <li key={word.word}>
 905                   {`${word.word}: ${word.players.join(', ')}`}
 906                 </li>
 907               );
 908             })}
 909           </ul>
 910           <button
 911             className="new-game"
 912             onClick={() => fetch_post_json('reset') }
 913           >
 914             New Game
 915           </button>
 916         </div>
 917       );
 918     }
 919
 920     if (state.ambiguities){
 921       return <Ambiguities
 922                prompt={state.active_prompt}
 923                words={state.ambiguities}
 924                players_judged={state.players_judged}
 925                players_judging={state.players_judging}
 926                votes={state.end_judging_votes}
 927              />;
 928     }
 929
 930     if (state.active_prompt) {
 931       return <ActivePrompt
 932                prompt={state.active_prompt}
 933                players_answered={state.players_answered}
 934                players_answering={state.players_answering}
 935                votes={state.end_answers_votes}
 936              />;
 937     }
 938
 939     return [
 940       <GameInfo
 941         key="game-info"
 942         id={state.game_info.id}
 943         url={state.game_info.url}
 944       />,
 945       <PlayerInfo
 946         key="player-info"
 947         game={this}
 948         player={state.player_info}
 949         other_players={state.other_players}
 950       />,
 951       <p key="spacer"></p>,
 952       <CategoryRequest
 953         key="category-request"
 954       />,
 955       <PromptOptions
 956         key="prompts"
 957         prompts={state.prompts}
 958       />,
 959       <LetsPlay
 960         key="lets-play"
 961         num_players={1+state.other_players.length}
 962         prompts={state.prompts}
 963       />
 964     ];
 965   }
 966 }
 967
 968 ReactDOM.render(<Game
 969                   ref={(me) => window.game = me}
 970                 />, document.getElementById("empathy"));