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

   1 const MAX_PROMPT_ITEMS = 20;
   2
   3 function undisplay(element) {
   4   element.style.display="none";
   5 }
   6
   7 function add_message(severity, message) {
   8   message = `<div class="message ${severity}" onclick="undisplay(this)">
   9 <span class="hide-button" onclick="undisplay(this.parentElement)">&times;</span>
  10 ${message}
  11 </div>`;
  12   const message_area = document.getElementById('message-area');
  13   message_area.insertAdjacentHTML('beforeend', message);
  14 }
  15
  16 /*********************************************************
  17  * Handling server-sent event stream                     *
  18  *********************************************************/
  19
  20 const events = new EventSource("events");
  21
  22 events.onerror = function(event) {
  23   if (event.target.readyState === EventSource.CLOSED) {
  24     setTimeout(() => {
  25       add_message("danger", "Connection to server lost.");
  26     }, 1000);
  27   }
  28 };
  29
  30 events.addEventListener("game-info", event => {
  31   const info = JSON.parse(event.data);
  32
  33   window.game.set_game_info(info);
  34 });
  35
  36 events.addEventListener("player-info", event => {
  37   const info = JSON.parse(event.data);
  38
  39   window.game.set_player_info(info);
  40 });
  41
  42 events.addEventListener("player-enter", event => {
  43   const info = JSON.parse(event.data);
  44
  45   window.game.set_other_player_info(info);
  46 });
  47
  48 events.addEventListener("player-exit", event => {
  49   const info = JSON.parse(event.data);
  50
  51   window.game.remove_player(info);
  52 });
  53
  54 events.addEventListener("player-update", event => {
  55   const info = JSON.parse(event.data);
  56
  57   if (info.id === window.game.state.player_info.id)
  58     window.game.set_player_info(info);
  59   else
  60     window.game.set_other_player_info(info);
  61 });
  62
  63 events.addEventListener("game-state", event => {
  64   const state = JSON.parse(event.data);
  65
  66   window.game.reset_game_state();
  67
  68   window.game.set_prompts(state.prompts);
  69
  70   window.game.set_active_prompt(state.active_prompt);
  71
  72   window.game.set_players_answered(state.players_answered);
  73
  74   window.game.set_players_answering(state.players_answering);
  75
  76   window.game.set_answering_idle(state.answering_idle);
  77
  78   window.game.set_end_answers(state.end_answers);
  79
  80   window.game.set_ambiguities(state.ambiguities);
  81
  82   window.game.set_players_judged(state.players_judged);
  83
  84   window.game.set_players_judging(state.players_judging);
  85
  86   window.game.set_judging_idle(state.judging_idle);
  87
  88   window.game.set_end_judging(state.end_judging);
  89
  90   window.game.set_scores(state.scores);
  91
  92   window.game.set_new_game_votes(state.new_game_votes);
  93
  94   window.game.state_ready();
  95 });
  96
  97 events.addEventListener("prompt", event => {
  98   const prompt = JSON.parse(event.data);
  99
 100   window.game.add_or_update_prompt(prompt);
 101 });
 102
 103 events.addEventListener("start", event => {
 104   const prompt = JSON.parse(event.data);
 105
 106   window.game.set_active_prompt(prompt);
 107 });
 108
 109 events.addEventListener("player-answered", event => {
 110   const player = JSON.parse(event.data);
 111
 112   window.game.set_player_answered(player);
 113 });
 114
 115 events.addEventListener("player-answering", event => {
 116   const player = JSON.parse(event.data);
 117
 118   window.game.set_player_answering(player);
 119 });
 120
 121 events.addEventListener("answering-idle", event => {
 122   const value = JSON.parse(event.data);
 123
 124   window.game.set_answering_idle(value);
 125 });
 126
 127 events.addEventListener("vote-end-answers", event => {
 128   const player = JSON.parse(event.data);
 129
 130   window.game.set_player_vote_end_answers(player);
 131 });
 132
 133 events.addEventListener("unvote-end-answers", event => {
 134   const player = JSON.parse(event.data);
 135
 136   window.game.set_player_unvote_end_answers(player);
 137 });
 138
 139 events.addEventListener("ambiguities", event => {
 140   const ambiguities = JSON.parse(event.data);
 141
 142   window.game.set_ambiguities(ambiguities);
 143 });
 144
 145 events.addEventListener("player-judged", event => {
 146   const player = JSON.parse(event.data);
 147
 148   window.game.set_player_judged(player);
 149 });
 150
 151 events.addEventListener("player-judging", event => {
 152   const player = JSON.parse(event.data);
 153
 154   window.game.set_player_judging(player);
 155 });
 156
 157 events.addEventListener("judging-idle", event => {
 158   const value = JSON.parse(event.data);
 159
 160   window.game.set_judging_idle(value);
 161 });
 162
 163 events.addEventListener("vote-end-judging", event => {
 164   const player = JSON.parse(event.data);
 165
 166   window.game.set_player_vote_end_judging(player);
 167 });
 168
 169 events.addEventListener("unvote-end-judging", event => {
 170   const player = JSON.parse(event.data);
 171
 172   window.game.set_player_unvote_end_judging(player);
 173 });
 174
 175 events.addEventListener("scores", event => {
 176   const scores = JSON.parse(event.data);
 177
 178   window.game.set_scores(scores);
 179 });
 180
 181 events.addEventListener("vote-new-game", event => {
 182   const player = JSON.parse(event.data);
 183
 184   window.game.set_player_vote_new_game(player);
 185 });
 186
 187 events.addEventListener("unvote-new-game", event => {
 188   const player = JSON.parse(event.data);
 189
 190   window.game.set_player_unvote_new_game(player);
 191 });
 192
 193 /*********************************************************
 194  * Game and supporting classes                           *
 195  *********************************************************/
 196
 197 function copy_to_clipboard(id)
 198 {
 199   const tmp = document.createElement("input");
 200   tmp.setAttribute("value", document.getElementById(id).innerHTML);
 201   document.body.appendChild(tmp);
 202   tmp.select();
 203   document.execCommand("copy");
 204   document.body.removeChild(tmp);
 205 }
 206
 207 const GameInfo = React.memo(props => {
 208   if (! props.id)
 209     return null;
 210
 211   return (
 212     <div className="game-info">
 213       <span className="game-id">{props.id}</span>
 214       {" "}
 215       Share this link to invite friends:{" "}
 216       <span id="game-share-url">{props.url}</span>
 217       {" "}
 218       <button
 219         className="inline"
 220         onClick={() => copy_to_clipboard('game-share-url')}
 221       >Copy Link</button>
 222     </div>
 223   );
 224 });
 225
 226 const PlayerInfo = React.memo(props => {
 227   if (! props.player.id)
 228     return null;
 229
 230   const all_players = [props.player, ...props.other_players];
 231
 232   const sorted_players = all_players.sort((a,b) => {
 233     return b.score - a.score;
 234   });
 235
 236   const names_and_scores = sorted_players.map(player => {
 237     if (player.score)
 238       return `${player.name} (${player.score})`;
 239     else
 240       return player.name;
 241   }).join(', ');
 242
 243   return (
 244     <div className="player-info">
 245       <span className="players-header">Players: </span>
 246       <span>{names_and_scores}</span>
 247     </div>
 248   );
 249 });
 250
 251 function fetch_method_json(method, api = '', data = {}) {
 252   const response = fetch(api, {
 253     method: method,
 254     headers: {
 255       'Content-Type': 'application/json'
 256     },
 257     body: JSON.stringify(data)
 258   });
 259   return response;
 260 }
 261
 262 function fetch_post_json(api = '', data = {}) {
 263   return fetch_method_json('POST', api, data);
 264 }
 265
 266 async function fetch_put_json(api = '', data = {}) {
 267   return fetch_method_json('PUT', api, data);
 268 }
 269
 270 class CategoryRequest extends React.PureComponent {
 271   constructor(props) {
 272     super(props);
 273     this.category = React.createRef();
 274
 275     this.handle_change = this.handle_change.bind(this);
 276     this.handle_submit = this.handle_submit.bind(this);
 277   }
 278
 279   handle_change(event) {
 280     const category_input = this.category.current;
 281     const category = category_input.value;
 282
 283     const match = category.match(/[0-9]+/);
 284     if (match) {
 285       const num_items = parseInt(match[0], 10);
 286       if (num_items <= MAX_PROMPT_ITEMS)
 287         category_input.setCustomValidity("");
 288     }
 289   }
 290
 291   async handle_submit(event) {
 292     const form = event.currentTarget;
 293     const category_input = this.category.current;
 294     const category = category_input.value;
 295
 296     /* Prevent the default page-changing form-submission behavior. */
 297     event.preventDefault();
 298
 299     const match = category.match(/[0-9]+/);
 300     if (match === null) {
 301       category_input.setCustomValidity("Category must include a number");
 302       form.reportValidity();
 303       return;
 304     }
 305
 306     const num_items = parseInt(match[0], 10);
 307
 308     if (num_items > MAX_PROMPT_ITEMS) {
 309       category_input.setCustomValidity(`Maximum number of items is ${MAX_PROMPT_ITEMS}`);
 310       form.reportValidity();
 311       return;
 312     }
 313
 314     const response = await fetch_post_json("prompts", {
 315       items: num_items,
 316       prompt: category
 317     });
 318
 319     if (response.status === 200) {
 320       const result = await response.json();
 321       if (! result.valid) {
 322         add_message("danger", result.message);
 323         return;
 324       }
 325     } else {
 326       add_message("danger", "An error occurred submitting your category");
 327     }
 328
 329     form.reset();
 330   }
 331
 332   render() {
 333     return (
 334       <div className="category-request">
 335         <h2>Submit a Category</h2>
 336         <p>
 337           Suggest a category to play. Don't forget to include the
 338           number of items for each person to submit.
 339         </p>
 340
 341         <form onSubmit={this.handle_submit} >
 342           <div className="form-field large">
 343             <input
 344               type="text"
 345               id="category"
 346               placeholder="6 things at the beach"
 347               required
 348               autoComplete="off"
 349               onChange={this.handle_change}
 350               ref={this.category}
 351             />
 352           </div>
 353
 354           <div className="form-field large">
 355             <button type="submit">
 356               Send
 357             </button>
 358           </div>
 359
 360         </form>
 361       </div>
 362     );
 363   }
 364 }
 365
 366 const PromptOption = React.memo(props => {
 367
 368   const prompt = props.prompt;
 369
 370   if (prompt.votes_against.find(v => v === props.player.name))
 371     return false;
 372
 373   return (
 374     <button
 375       className="vote-button"
 376       key={prompt.id}
 377       onClick={() => fetch_post_json(`vote/${prompt.id}`) }
 378     >
 379       <span
 380         className="hide-button"
 381         onClick={(event) => {
 382           event.stopPropagation();
 383           fetch_post_json(`vote_against/${prompt.id}`);
 384         }}
 385       >
 386         &times;
 387       </span>
 388       {prompt.prompt}
 389       <div className="vote-choices">
 390         {prompt.votes.map(v => {
 391           return (
 392             <div
 393               key={v}
 394               className="vote-choice"
 395             >
 396               {v}
 397             </div>
 398           );
 399         })}
 400       </div>
 401     </button>
 402   );
 403 });
 404
 405 const PromptOptions = React.memo(props => {
 406
 407   if (props.prompts.length === 0)
 408     return null;
 409
 410   return (
 411     <div className="prompt-options">
 412       <h2>Vote on Categories</h2>
 413       <p>
 414         Select any categories below that you'd like to play.
 415         You can choose as many as you'd like.
 416       </p>
 417     {props.prompts.map(p => <PromptOption prompt={p} player={props.player} />)}
 418     </div>
 419   );
 420 });
 421
 422 const LetsPlay = React.memo(props => {
 423
 424   const quorum = Math.round((props.num_players + 1) / 2);
 425   const max_votes = props.prompts.reduce(
 426     (max_so_far, v) => Math.max(max_so_far, v.votes.length), 0);
 427
 428   if (max_votes < quorum)
 429     return null;
 430
 431   const candidates = props.prompts.filter(p => p.votes.length >= quorum);
 432   const index = Math.floor(Math.random() * candidates.length);
 433   const winner = candidates[index];
 434
 435   return (
 436     <div className="lets-play">
 437       <h2>Let's Play</h2>
 438       <p>
 439         That should be enough voting. If you're not waiting for any
 440         other players to join, then let's start.
 441       </p>
 442       <button
 443         className="lets-play"
 444         onClick={() => fetch_post_json(`start/${winner.id}`) }
 445       >
 446         Start Game
 447       </button>
 448     </div>
 449   );
 450 });
 451
 452 class Ambiguities extends React.PureComponent {
 453
 454   constructor(props) {
 455     super(props);
 456
 457     function canonize(word) {
 458       return word.replace(/((a|an|the) )?(.*?)s?$/i, '$3');
 459     }
 460
 461     const word_sets = [];
 462
 463     for (let word of props.words) {
 464       const word_canon = canonize(word);
 465       console.log("Canonized " + word + " to " + word_canon);
 466       let found_match = false;
 467       for (let set of word_sets) {
 468         const set_canon = canonize(set.values().next().value);
 469         console.log("Comparing " + word_canon + " to " + set_canon);
 470         if (word_canon === set_canon) {
 471           set.add(word);
 472           found_match = true;;
 473           break;
 474         }
 475       }
 476       if (! found_match) {
 477         const set = new Set();
 478         set.add(word);
 479         word_sets.push(set);
 480       }
 481     }
 482
 483     this.state = {
 484       word_sets: word_sets,
 485       selected: null,
 486       starred: null
 487     };
 488
 489     this.submitted = false;
 490     this.judging_sent_recently = false;
 491   }
 492
 493   async handle_submit() {
 494
 495     /* Don't submit a second time. */
 496     if (this.submitted)
 497       return;
 498
 499     const response = await fetch_post_json(
 500       `judged/${this.props.prompt.id}`,{
 501         word_groups: this.state.word_sets.map(set => Array.from(set)),
 502         kudos: Array.from(this.state.starred)
 503       }
 504     );
 505
 506     if (response.status === 200) {
 507       const result = await response.json();
 508       if (! result.valid) {
 509         add_message("danger", result.message);
 510         return;
 511       }
 512     } else {
 513       add_message("danger", "An error occurred submitting the results of your judging");
 514       return;
 515     }
 516
 517     this.submitted = true;
 518   }
 519
 520   handle_click(word) {
 521
 522     /* Let the server know we are doing some judging, (but rate limit
 523      * this so we don't send a "judging" notification more frquently
 524      * than necessary.
 525      */
 526     if (! this.judging_sent_recently) {
 527       fetch_post_json(`judging/${this.props.prompt.id}`);
 528       this.judging_sent_recently = true;
 529       setTimeout(() => { this.judging_sent_recently = false; }, 1000);
 530     }
 531
 532     if (this.state.selected == word) {
 533       /* Second click on same word removes the word from the group. */
 534       const idx = this.state.word_sets.findIndex(s => s.has(word));
 535       const set = this.state.word_sets[idx];
 536       if (set.size === 1) {
 537         /* When the word is already alone, there's nothing to do but
 538          * to un-select it. */
 539         this.setState({
 540           selected: null
 541         });
 542         return;
 543       }
 544
 545       const new_set = new Set([...set].filter(w => w !== word));
 546       this.setState({
 547         selected: null,
 548         word_sets: [...this.state.word_sets.slice(0, idx),
 549                     new_set,
 550                     new Set().add(word),
 551                     ...this.state.word_sets.slice(idx+1)]
 552       });
 553     } else if (this.state.selected) {
 554       /* Click of a second word groups the two together. */
 555       const idx1 = this.state.word_sets.findIndex(s => s.has(this.state.selected));
 556       const idx2 = this.state.word_sets.findIndex(s => s.has(word));
 557       const set1 = this.state.word_sets[idx1];
 558       const set2 = this.state.word_sets[idx2];
 559       const new_set = new Set([...set2, ...set1]);
 560       if (idx1 < idx2) {
 561         this.setState({
 562           selected: null,
 563           word_sets: [...this.state.word_sets.slice(0, idx1),
 564                       ...this.state.word_sets.slice(idx1 + 1, idx2),
 565                       new_set,
 566                       ...this.state.word_sets.slice(idx2 + 1)]
 567         });
 568       } else {
 569         this.setState({
 570           selected: null,
 571           word_sets: [...this.state.word_sets.slice(0, idx2),
 572                       new_set,
 573                       ...this.state.word_sets.slice(idx2 + 1, idx1),
 574                       ...this.state.word_sets.slice(idx1 + 1)]
 575         });
 576       }
 577     } else {
 578       /* First click of a word selects it. */
 579       this.setState({
 580         selected: word
 581       });
 582     }
 583   }
 584
 585   render() {
 586     let move_on_button = null;
 587
 588     if (this.props.idle) {
 589       move_on_button = (
 590         <button
 591           className="vote-button"
 592           onClick={() => fetch_post_json(`end-judging/${this.props.prompt.id}`) }
 593         >
 594           Move On
 595           <div className="vote-choices">
 596             {[...this.props.votes].map(v => {
 597               return (
 598                 <div
 599                   key={v}
 600                   className="vote-choice"
 601                 >
 602                   {v}
 603                   </div>
 604               );
 605             })}
 606           </div>
 607         </button>
 608       );
 609     }
 610
 611     let still_waiting = null;
 612     const judging_players = Object.keys(this.props.players_judging);
 613     if (judging_players.length) {
 614       still_waiting = (
 615         <div>
 616           <p>
 617             Still waiting for the following player
 618             {judging_players.length > 1 ? 's' : '' }
 619             :
 620           </p>
 621           <ul>
 622             {judging_players.map(player => {
 623               return (
 624                 <li
 625                   key={player}
 626                 >
 627                   {player}{' '}
 628                   <span className=
 629                   {this.props.players_judging[player].active ?
 630                    "typing active"
 631                    :
 632                    "typing idle"}>
 633                     <span>{'.'}</span><span>{'.'}</span><span>{'.'}</span>
 634                   </span>
 635                 </li>
 636               );
 637             })}
 638           </ul>
 639         </div>
 640       );
 641     }
 642
 643     if (this.props.players_judged.has(this.props.player.name)) {
 644       return (
 645         <div className="please-wait">
 646           <h2>Submission received</h2>
 647           <p>
 648             The following players have completed judging:{' '}
 649             {[...this.props.players_judged].join(', ')}
 650           </p>
 651           {still_waiting}
 652           {move_on_button}
 653
 654         </div>
 655       );
 656     }
 657
 658     const btn_class = "ambiguity-button";
 659     const btn_selected_class = btn_class + " selected";
 660
 661     return (
 662       <div className="ambiguities">
 663         <h2>Judging Answers</h2>
 664         <p>
 665           Click on each pair of answers that should be scored as equivalent,
 666           (and click any word twice to split it out from a group). Remember,
 667           what goes around comes around, so it's best to be generous when
 668           judging.
 669         </p>
 670         <h2>{this.props.prompt.prompt}</h2>
 671         {this.state.word_sets.map(set => {
 672           return (
 673             <div
 674               className="ambiguity-group"
 675               key={Array.from(set)[0]}
 676             >
 677               {Array.from(set).map(word => {
 678                 return (
 679                   <button
 680                     className={this.state.selected === word ?
 681                                btn_selected_class : btn_class }
 682                     key={word}
 683                     onClick={() => this.handle_click(word)}
 684                   >
 685                     {word}
 686                   </button>
 687                 );
 688               })}
 689               <span
 690                 className={this.state.starred === set ?
 691                            "star-button selected" : "star-button"
 692                           }
 693                 onClick={(event) => {
 694                   event.stopPropagation();
 695                   this.setState({
 696                     starred: set
 697                   });
 698                 }}
 699               >
 700               {this.state.starred === set ?
 701                '★' : '☆'
 702               }
 703               </span>
 704             </div>
 705           );
 706         })}
 707         <p>
 708           Click here when done judging:<br/>
 709           <button
 710             onClick={() => this.handle_submit()}
 711           >
 712             Send
 713           </button>
 714         </p>
 715       </div>
 716     );
 717   }
 718 }
 719
 720 class ActivePrompt extends React.PureComponent {
 721
 722   constructor(props) {
 723     super(props);
 724     const items = props.prompt.items;
 725
 726     this.submitted = false;
 727
 728     this.answers = [...Array(items)].map(() => React.createRef());
 729     this.answering_sent_recently = false;
 730
 731     this.handle_submit = this.handle_submit.bind(this);
 732     this.handle_change = this.handle_change.bind(this);
 733   }
 734
 735   handle_change(event) {
 736     /* We don't care (or even look) at what the player is typing at
 737      * this point. We simply want to be informed that the player _is_
 738      * typing so that we can tell the server (which will tell other
 739      * players) that there is activity here.
 740      */
 741
 742     /* Rate limit so that we don't send an "answering" notification
 743      * more frequently than necessary.
 744      */
 745     if (! this.answering_sent_recently) {
 746       fetch_post_json(`answering/${this.props.prompt.id}`);
 747       this.answering_sent_recently = true;
 748       setTimeout(() => { this.answering_sent_recently = false; }, 1000);
 749     }
 750   }
 751
 752   async handle_submit(event) {
 753     const form = event.currentTarget;
 754
 755     /* Prevent the default page-changing form-submission behavior. */
 756     event.preventDefault();
 757
 758     /* And don't submit a second time. */
 759     if (this.submitted)
 760       return;
 761
 762     const response = await fetch_post_json(`answer/${this.props.prompt.id}`, {
 763       answers: this.answers.map(r => r.current.value)
 764     });
 765     if (response.status === 200) {
 766       const result = await response.json();
 767       if (! result.valid) {
 768         add_message("danger", result.message);
 769         return;
 770       }
 771     } else {
 772       add_message("danger", "An error occurred submitting your answers");
 773       return;
 774     }
 775
 776     /* Everything worked. Server is happy with our answers. */
 777     form.reset();
 778     this.submitted = true;
 779   }
 780
 781   render() {
 782     let move_on_button = null;
 783     if (this.props.idle) {
 784       move_on_button =(
 785         <button
 786           className="vote-button"
 787           onClick={() => fetch_post_json(`end-answers/${this.props.prompt.id}`) }
 788         >
 789           Move On
 790           <div className="vote-choices">
 791             {[...this.props.votes].map(v => {
 792               return (
 793                 <div
 794                   key={v}
 795                   className="vote-choice"
 796                 >
 797                   {v}
 798                 </div>
 799               );
 800             })}
 801           </div>
 802         </button>
 803       );
 804     }
 805
 806     let still_waiting = null;
 807     const answering_players = Object.keys(this.props.players_answering);;
 808     if (answering_players.length) {
 809       still_waiting = (
 810         <div>
 811           <p>
 812             Still waiting for the following player
 813             {answering_players.length > 1 ? 's' : ''}
 814             :
 815           </p>
 816           <ul>
 817             {answering_players.map(player => {
 818               return (
 819                 <li
 820                   key={player}
 821                 >
 822                   {player}{' '}
 823                   <span className=
 824                   {this.props.players_answering[player].active ?
 825                    "typing active"
 826                    :
 827                    "typing idle"}>
 828                     <span>{'.'}</span><span>{'.'}</span><span>{'.'}</span>
 829                   </span>
 830                 </li>
 831               );
 832             })}
 833           </ul>
 834         </div>
 835       );
 836     }
 837
 838     if (this.props.players_answered.has(this.props.player.name)) {
 839       return (
 840         <div className="please-wait">
 841           <h2>Submission received</h2>
 842           <p>
 843             The following players have submitted their answers:{' '}
 844             {[...this.props.players_answered].join(', ')}
 845           </p>
 846           {still_waiting}
 847           {move_on_button}
 848
 849         </div>
 850       );
 851     }
 852
 853     return (
 854       <div className="active-prompt">
 855         <h2>The Game of Empathy</h2>
 856         <p>
 857           Remember, you're trying to match your answers with
 858           what the other players submit.
 859           Give {this.props.prompt.items} answer
 860           {this.props.prompt.items > 1 ? 's' : ''} for the following prompt:
 861         </p>
 862         <h2>{this.props.prompt.prompt}</h2>
 863         <form onSubmit={this.handle_submit}>
 864           {[...Array(this.props.prompt.items)].map((whocares,i) => {
 865             return (
 866               <div
 867                 key={i}
 868                 className="form-field large">
 869                 <input
 870                   type="text"
 871                   name={`answer_${i}`}
 872                   required
 873                   autoComplete="off"
 874                   onChange={this.handle_change}
 875                   ref={this.answers[i]}
 876                 />
 877               </div>
 878             );
 879           })}
 880
 881           <div
 882             key="submit-button"
 883             className="form-field large">
 884             <button type="submit">
 885               Send
 886             </button>
 887           </div>
 888
 889         </form>
 890       </div>
 891     );
 892   }
 893 }
 894
 895 class Game extends React.PureComponent {
 896   constructor(props) {
 897     super(props);
 898     this.state = {
 899       game_info: {},
 900       player_info: {},
 901       other_players: [],
 902       prompts: [],
 903       active_prompt: null,
 904       players_answered: new Set(),
 905       players_answering: {},
 906       answering_idle: false,
 907       end_answers_votes: new Set(),
 908       ambiguities: null,
 909       players_judged: new Set(),
 910       players_judging: {},
 911       judging_idle: false,
 912       end_judging_votes: new Set(),
 913       scores: null,
 914       new_game_votes: new Set(),
 915       ready: false
 916     };
 917   }
 918
 919   set_game_info(info) {
 920     this.setState({
 921       game_info: info
 922     });
 923   }
 924
 925   set_player_info(info) {
 926     this.setState({
 927       player_info: info
 928     });
 929   }
 930
 931   set_other_player_info(info) {
 932     const other_players_copy = [...this.state.other_players];
 933     const idx = other_players_copy.findIndex(o => o.id === info.id);
 934     if (idx >= 0) {
 935       other_players_copy[idx] = info;
 936     } else {
 937       other_players_copy.push(info);
 938     }
 939     this.setState({
 940       other_players: other_players_copy
 941     });
 942   }
 943
 944   remove_player(info) {
 945     this.setState({
 946       other_players: this.state.other_players.filter(o => o.id !== info.id)
 947     });
 948   }
 949
 950   reset_game_state() {
 951     this.setState({
 952       prompts: [],
 953       active_prompt: null,
 954       players_answered: new Set(),
 955       players_answering: {},
 956       answering_idle: false,
 957       end_answers_votes: new Set(),
 958       ambiguities: null,
 959       players_judged: new Set(),
 960       players_judging: {},
 961       judging_idle: false,
 962       end_judging_votes: new Set(),
 963       scores: null,
 964       new_game_votes: new Set(),
 965       ready: false
 966     });
 967   }
 968
 969   set_prompts(prompts) {
 970     this.setState({
 971       prompts: prompts
 972     });
 973   }
 974
 975   add_or_update_prompt(prompt) {
 976     const prompts_copy = [...this.state.prompts];
 977     const idx = prompts_copy.findIndex(p => p.id === prompt.id);
 978     if (idx >= 0) {
 979       prompts_copy[idx] = prompt;
 980     } else {
 981       prompts_copy.push(prompt);
 982     }
 983     this.setState({
 984       prompts: prompts_copy
 985     });
 986   }
 987
 988   set_active_prompt(prompt) {
 989     this.setState({
 990       active_prompt: prompt
 991     });
 992   }
 993
 994   set_players_answered(players) {
 995     this.setState({
 996       players_answered: new Set(players)
 997     });
 998   }
 999
1000   set_player_answered(player) {
1001     const new_players_answering = {...this.state.players_answering};
1002     delete new_players_answering[player];
1003
1004     this.setState({
1005       players_answered: new Set([...this.state.players_answered, player]),
1006       players_answering: new_players_answering
1007     });
1008   }
1009
1010   set_players_answering(players) {
1011     const players_answering = {};
1012     for (let player of players) {
1013       players_answering[player] = {active: false};
1014     }
1015     this.setState({
1016       players_answering: players_answering
1017     });
1018   }
1019
1020   set_player_answering(player) {
1021     /* Set the player as actively answering now. */
1022     this.setState({
1023       players_answering: {
1024         ...this.state.players_answering,
1025         [player]: {active: true}
1026       }
1027     });
1028     /* And arrange to have them marked idle very shortly.
1029      *
1030      * Note: This timeout is intentionally very, very short. We only
1031      * need it long enough that the browser has latched onto the state
1032      * change to "active" above. We actually use a CSS transition
1033      * delay to control the user-perceptible length of time after
1034      * which an active player appears inactive.
1035      */
1036     setTimeout(() => {
1037       this.setState({
1038         players_answering: {
1039           ...this.state.players_answering,
1040           [player]: {active: false}
1041         }
1042       });
1043     }, 100);
1044   }
1045
1046   set_answering_idle(value) {
1047     this.setState({
1048       answering_idle: value
1049     });
1050   }
1051
1052   set_end_answers(players) {
1053     this.setState({
1054       end_answers_votes: new Set(players)
1055     });
1056   }
1057
1058   set_player_vote_end_answers(player) {
1059     this.setState({
1060       end_answers_votes: new Set([...this.state.end_answers_votes, player])
1061     });
1062   }
1063
1064   set_player_unvote_end_answers(player) {
1065     this.setState({
1066       end_answers_votes: new Set([...this.state.end_answers_votes].filter(p => p !== player))
1067     });
1068   }
1069
1070   set_ambiguities(ambiguities) {
1071     this.setState({
1072       ambiguities: ambiguities
1073     });
1074   }
1075
1076   set_players_judged(players) {
1077     this.setState({
1078       players_judged: new Set(players)
1079     });
1080   }
1081
1082   set_player_judged(player) {
1083     const new_players_judging = {...this.state.players_judging};
1084     delete new_players_judging[player];
1085
1086     this.setState({
1087       players_judged: new Set([...this.state.players_judged, player]),
1088       players_judging: new_players_judging
1089     });
1090   }
1091
1092   set_players_judging(players) {
1093     const players_judging = {};
1094     for (let player of players) {
1095       players_judging[player] = {active: false};
1096     }
1097     this.setState({
1098       players_judging: players_judging
1099     });
1100   }
1101
1102   set_player_judging(player) {
1103     /* Set the player as actively judging now. */
1104     this.setState({
1105       players_judging: {
1106         ...this.state.players_judging,
1107         [player]: {active: true}
1108       }
1109     });
1110     /* And arrange to have them marked idle very shortly.
1111      *
1112      * Note: This timeout is intentionally very, very short. We only
1113      * need it long enough that the browser has latched onto the state
1114      * change to "active" above. We actually use a CSS transition
1115      * delay to control the user-perceptible length of time after
1116      * which an active player appears inactive.
1117      */
1118     setTimeout(() => {
1119       this.setState({
1120         players_judging: {
1121           ...this.state.players_judging,
1122           [player]: {active: false}
1123         }
1124       });
1125     }, 100);
1126
1127   }
1128
1129   set_judging_idle(value) {
1130     this.setState({
1131       judging_idle: value
1132     });
1133   }
1134
1135   set_end_judging(players) {
1136     this.setState({
1137       end_judging_votes: new Set(players)
1138     });
1139   }
1140
1141   set_player_vote_end_judging(player) {
1142     this.setState({
1143       end_judging_votes: new Set([...this.state.end_judging_votes, player])
1144     });
1145   }
1146
1147   set_player_unvote_end_judging(player) {
1148     this.setState({
1149       end_judging_votes: new Set([...this.state.end_judging_votes].filter(p => p !== player))
1150     });
1151   }
1152
1153   set_scores(scores) {
1154     this.setState({
1155       scores: scores
1156     });
1157   }
1158
1159   set_new_game_votes(players) {
1160     this.setState({
1161       new_game_votes: new Set(players)
1162     });
1163   }
1164
1165   set_player_vote_new_game(player) {
1166     this.setState({
1167       new_game_votes: new Set([...this.state.new_game_votes, player])
1168     });
1169   }
1170
1171   set_player_unvote_new_game(player) {
1172     this.setState({
1173       new_game_votes: new Set([...this.state.new_game_votes].filter(p => p !== player))
1174     });
1175   }
1176
1177   state_ready() {
1178     this.setState({
1179       ready: true
1180     });
1181   }
1182
1183   render() {
1184     const state = this.state;
1185     const players_total = 1 + state.other_players.length;
1186
1187     if (state.scores) {
1188
1189       let perfect_score = 0;
1190       for (let i = 0;
1191            i < state.active_prompt.items &&
1192            i < state.scores.words.length;
1193            i++)
1194       {
1195         perfect_score += state.scores.words[i].players.length;
1196       }
1197
1198       return (
1199         <div className="scores">
1200           <h2>{state.active_prompt.prompt}</h2>
1201           <h2>Scores</h2>
1202           <ul>
1203             {state.scores.scores.map(score => {
1204               let perfect = null;
1205               if (score.score == perfect_score) {
1206                 perfect = <span className="label">Perfect!</span>;
1207               }
1208               return (
1209                 <li key={score.players[0]}>
1210                   {score.players.join("/")}: {score.score} {perfect}
1211                 </li>
1212               );
1213             })}
1214           </ul>
1215           <h2>Words submitted</h2>
1216           <ul>
1217             {state.scores.words.map(word => {
1218               return (
1219                 <li key={word.word}>
1220                   {word.word} ({word.players.length}): {word.players.join(', ')}
1221                 </li>
1222               );
1223             })}
1224           </ul>
1225           <button
1226             className="vote-button"
1227             onClick={() => fetch_post_json(`new-game/${state.active_prompt.id}`) }
1228           >
1229             New Game
1230             <div className="vote-choices">
1231               {[...state.new_game_votes].map(v => {
1232                 return (
1233                   <div
1234                     key={v}
1235                     className="vote-choice"
1236                   >
1237                     {v}
1238                   </div>
1239                 );
1240               })}
1241             </div>
1242           </button>
1243         </div>
1244       );
1245     }
1246
1247     if (state.ambiguities){
1248       return <Ambiguities
1249                prompt={state.active_prompt}
1250                words={state.ambiguities}
1251                player={state.player_info}
1252                players_judged={state.players_judged}
1253                players_judging={state.players_judging}
1254                idle={state.judging_idle}
1255                votes={state.end_judging_votes}
1256              />;
1257     }
1258
1259     if (state.active_prompt) {
1260       return <ActivePrompt
1261                prompt={state.active_prompt}
1262                player={state.player_info}
1263                players_answered={state.players_answered}
1264                players_answering={state.players_answering}
1265                idle={state.answering_idle}
1266                votes={state.end_answers_votes}
1267              />;
1268     }
1269
1270     if (! state.ready)
1271       return null;
1272
1273     return [
1274       <GameInfo
1275         key="game-info"
1276         id={state.game_info.id}
1277         url={state.game_info.url}
1278       />,
1279       <PlayerInfo
1280         key="player-info"
1281         game={this}
1282         player={state.player_info}
1283         other_players={state.other_players}
1284       />,
1285       <p key="spacer"></p>,
1286       <CategoryRequest
1287         key="category-request"
1288       />,
1289       <PromptOptions
1290         key="prompts"
1291         prompts={state.prompts}
1292         player={state.player_info}
1293       />,
1294       <LetsPlay
1295         key="lets-play"
1296         num_players={1+state.other_players.length}
1297         prompts={state.prompts}
1298       />
1299     ];
1300   }
1301 }
1302
1303 ReactDOM.render(<Game
1304                   ref={(me) => window.game = me}
1305                 />, document.getElementById("empathy"));