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

   1 const MAX_PROMPT_ITEMS = 20;
   2
   3 function undisplay(element) {
   4   element.style.display="none";
   5 }
   6
   7 function add_message(severity, message) {
   8   message = `<div class="message ${severity}" onclick="undisplay(this)">
   9 <span class="hide-button" onclick="undisplay(this.parentElement)">&times;</span>
  10 ${message}
  11 </div>`;
  12   const message_area = document.getElementById('message-area');
  13   message_area.insertAdjacentHTML('beforeend', message);
  14 }
  15
  16 /*********************************************************
  17  * Handling server-sent event stream                     *
  18  *********************************************************/
  19
  20 const events = new EventSource("events");
  21
  22 events.onerror = function(event) {
  23   if (event.target.readyState === EventSource.CLOSED) {
  24     setTimeout(() => {
  25       add_message("danger", "Connection to server lost.");
  26     }, 1000);
  27   }
  28 };
  29
  30 events.addEventListener("game-info", event => {
  31   const info = JSON.parse(event.data);
  32
  33   window.game.set_game_info(info);
  34 });
  35
  36 events.addEventListener("player-info", event => {
  37   const info = JSON.parse(event.data);
  38
  39   window.game.set_player_info(info);
  40 });
  41
  42 events.addEventListener("player-enter", event => {
  43   const info = JSON.parse(event.data);
  44
  45   window.game.set_other_player_info(info);
  46 });
  47
  48 events.addEventListener("player-exit", event => {
  49   const info = JSON.parse(event.data);
  50
  51   window.game.remove_player(info);
  52 });
  53
  54 events.addEventListener("player-update", event => {
  55   const info = JSON.parse(event.data);
  56
  57   if (info.id === window.game.state.player_info.id)
  58     window.game.set_player_info(info);
  59   else
  60     window.game.set_other_player_info(info);
  61 });
  62
  63 events.addEventListener("game-state", event => {
  64   const state = JSON.parse(event.data);
  65
  66   window.game.reset_game_state();
  67
  68   window.game.set_prompts(state.prompts);
  69
  70   window.game.set_active_prompt(state.active_prompt);
  71
  72   window.game.set_players_answered(state.players_answered);
  73
  74   window.game.set_players_answering(state.players_answering);
  75
  76   window.game.set_answering_idle(state.answering_idle);
  77
  78   window.game.set_end_answers(state.end_answers);
  79
  80   window.game.set_ambiguities(state.ambiguities);
  81
  82   window.game.set_players_judged(state.players_judged);
  83
  84   window.game.set_players_judging(state.players_judging);
  85
  86   window.game.set_judging_idle(state.judging_idle);
  87
  88   window.game.set_end_judging(state.end_judging);
  89
  90   window.game.set_scores(state.scores);
  91
  92   window.game.set_new_game_votes(state.new_game_votes);
  93
  94   window.game.state_ready();
  95 });
  96
  97 events.addEventListener("prompt", event => {
  98   const prompt = JSON.parse(event.data);
  99
 100   window.game.add_or_update_prompt(prompt);
 101 });
 102
 103 events.addEventListener("start", event => {
 104   const prompt = JSON.parse(event.data);
 105
 106   window.game.set_active_prompt(prompt);
 107 });
 108
 109 events.addEventListener("player-answered", event => {
 110   const player = JSON.parse(event.data);
 111
 112   window.game.set_player_answered(player);
 113 });
 114
 115 events.addEventListener("player-answering", event => {
 116   const player = JSON.parse(event.data);
 117
 118   window.game.set_player_answering(player);
 119 });
 120
 121 events.addEventListener("answering-idle", event => {
 122   const value = JSON.parse(event.data);
 123
 124   window.game.set_answering_idle(value);
 125 });
 126
 127 events.addEventListener("vote-end-answers", event => {
 128   const player = JSON.parse(event.data);
 129
 130   window.game.set_player_vote_end_answers(player);
 131 });
 132
 133 events.addEventListener("unvote-end-answers", event => {
 134   const player = JSON.parse(event.data);
 135
 136   window.game.set_player_unvote_end_answers(player);
 137 });
 138
 139 events.addEventListener("ambiguities", event => {
 140   const ambiguities = JSON.parse(event.data);
 141
 142   window.game.set_ambiguities(ambiguities);
 143 });
 144
 145 events.addEventListener("player-judged", event => {
 146   const player = JSON.parse(event.data);
 147
 148   window.game.set_player_judged(player);
 149 });
 150
 151 events.addEventListener("player-judging", event => {
 152   const player = JSON.parse(event.data);
 153
 154   window.game.set_player_judging(player);
 155 });
 156
 157 events.addEventListener("judging-idle", event => {
 158   const value = JSON.parse(event.data);
 159
 160   window.game.set_judging_idle(value);
 161 });
 162
 163 events.addEventListener("vote-end-judging", event => {
 164   const player = JSON.parse(event.data);
 165
 166   window.game.set_player_vote_end_judging(player);
 167 });
 168
 169 events.addEventListener("unvote-end-judging", event => {
 170   const player = JSON.parse(event.data);
 171
 172   window.game.set_player_unvote_end_judging(player);
 173 });
 174
 175 events.addEventListener("scores", event => {
 176   const scores = JSON.parse(event.data);
 177
 178   window.game.set_scores(scores);
 179 });
 180
 181 events.addEventListener("vote-new-game", event => {
 182   const player = JSON.parse(event.data);
 183
 184   window.game.set_player_vote_new_game(player);
 185 });
 186
 187 events.addEventListener("unvote-new-game", event => {
 188   const player = JSON.parse(event.data);
 189
 190   window.game.set_player_unvote_new_game(player);
 191 });
 192
 193 /*********************************************************
 194  * Game and supporting classes                           *
 195  *********************************************************/
 196
 197 function copy_to_clipboard(id)
 198 {
 199   const tmp = document.createElement("input");
 200   tmp.setAttribute("value", document.getElementById(id).innerHTML);
 201   document.body.appendChild(tmp);
 202   tmp.select();
 203   document.execCommand("copy");
 204   document.body.removeChild(tmp);
 205 }
 206
 207 const GameInfo = React.memo(props => {
 208   if (! props.id)
 209     return null;
 210
 211   return (
 212     <div className="game-info">
 213       <span className="game-id">{props.id}</span>
 214       {" "}
 215       Share this link to invite friends:{" "}
 216       <span id="game-share-url">{props.url}</span>
 217       {" "}
 218       <button
 219         className="inline"
 220         onClick={() => copy_to_clipboard('game-share-url')}
 221       >Copy Link</button>
 222     </div>
 223   );
 224 });
 225
 226 const PlayerInfo = React.memo(props => {
 227   if (! props.player.id)
 228     return null;
 229
 230   const all_players = [props.player, ...props.other_players];
 231
 232   const sorted_players = all_players.sort((a,b) => {
 233     return b.score - a.score;
 234   });
 235
 236   const names_and_scores = sorted_players.map(player => {
 237     if (player.score)
 238       return `${player.name} (${player.score})`;
 239     else
 240       return player.name;
 241   }).join(', ');
 242
 243   return (
 244     <div className="player-info">
 245       <span className="players-header">Players: </span>
 246       <span>{names_and_scores}</span>
 247     </div>
 248   );
 249 });
 250
 251 function fetch_method_json(method, api = '', data = {}) {
 252   const response = fetch(api, {
 253     method: method,
 254     headers: {
 255       'Content-Type': 'application/json'
 256     },
 257     body: JSON.stringify(data)
 258   });
 259   return response;
 260 }
 261
 262 function fetch_post_json(api = '', data = {}) {
 263   return fetch_method_json('POST', api, data);
 264 }
 265
 266 async function fetch_put_json(api = '', data = {}) {
 267   return fetch_method_json('PUT', api, data);
 268 }
 269
 270 class CategoryRequest extends React.PureComponent {
 271   constructor(props) {
 272     super(props);
 273     this.category = React.createRef();
 274
 275     this.handle_change = this.handle_change.bind(this);
 276     this.handle_submit = this.handle_submit.bind(this);
 277   }
 278
 279   handle_change(event) {
 280     const category_input = this.category.current;
 281     const category = category_input.value;
 282
 283     const match = category.match(/[0-9]+/);
 284     if (match) {
 285       const num_items = parseInt(match[0], 10);
 286       if (num_items > 0 && num_items <= MAX_PROMPT_ITEMS)
 287         category_input.setCustomValidity("");
 288     }
 289   }
 290
 291   async handle_submit(event) {
 292     const form = event.currentTarget;
 293     const category_input = this.category.current;
 294     const category = category_input.value;
 295
 296     /* Prevent the default page-changing form-submission behavior. */
 297     event.preventDefault();
 298
 299     const match = category.match(/[0-9]+/);
 300     if (match === null) {
 301       category_input.setCustomValidity("Category must include a number");
 302       form.reportValidity();
 303       return;
 304     }
 305
 306     const num_items = parseInt(match[0], 10);
 307
 308     if (num_items > MAX_PROMPT_ITEMS) {
 309       category_input.setCustomValidity(`Maximum number of items is ${MAX_PROMPT_ITEMS}`);
 310       form.reportValidity();
 311       return;
 312     }
 313
 314     if (num_items < 1) {
 315       category_input.setCustomValidity("Category must require at least one item.");
 316       form.reportValidity();
 317       return;
 318     }
 319
 320     const response = await fetch_post_json("prompts", {
 321       items: num_items,
 322       prompt: category
 323     });
 324
 325     if (response.status === 200) {
 326       const result = await response.json();
 327       if (! result.valid) {
 328         add_message("danger", result.message);
 329         return;
 330       }
 331     } else {
 332       add_message("danger", "An error occurred submitting your category");
 333     }
 334
 335     form.reset();
 336   }
 337
 338   render() {
 339     return (
 340       <div className="category-request">
 341         <h2>Submit a Category</h2>
 342         <p>
 343           Suggest a category to play. Don't forget to include the
 344           number of items for each person to submit.
 345         </p>
 346
 347         <form onSubmit={this.handle_submit} >
 348           <div className="form-field large">
 349             <input
 350               type="text"
 351               id="category"
 352               placeholder="6 things at the beach"
 353               required
 354               autoComplete="off"
 355               onChange={this.handle_change}
 356               ref={this.category}
 357             />
 358           </div>
 359
 360           <div className="form-field large">
 361             <button type="submit">
 362               Send
 363             </button>
 364           </div>
 365
 366         </form>
 367       </div>
 368     );
 369   }
 370 }
 371
 372 const PromptOption = React.memo(props => {
 373
 374   const prompt = props.prompt;
 375
 376   if (prompt.votes_against.find(v => v === props.player.name))
 377     return false;
 378
 379   return (
 380     <button
 381       className="vote-button"
 382       key={prompt.id}
 383       onClick={() => fetch_post_json(`vote/${prompt.id}`) }
 384     >
 385       <span
 386         className="hide-button"
 387         onClick={(event) => {
 388           event.stopPropagation();
 389           fetch_post_json(`vote_against/${prompt.id}`);
 390         }}
 391       >
 392         &times;
 393       </span>
 394       {prompt.prompt}
 395       <div className="vote-choices">
 396         {prompt.votes.map(v => {
 397           return (
 398             <div
 399               key={v}
 400               className="vote-choice"
 401             >
 402               {v}
 403             </div>
 404           );
 405         })}
 406       </div>
 407     </button>
 408   );
 409 });
 410
 411 const PromptOptions = React.memo(props => {
 412
 413   if (props.prompts.length === 0)
 414     return null;
 415
 416   return (
 417     <div className="prompt-options">
 418       <h2>Vote on Categories</h2>
 419       <p>
 420         Select any categories below that you'd like to play.
 421         You can choose as many as you'd like.
 422       </p>
 423       {props.prompts.map(
 424         prompt => <PromptOption
 425                     key={prompt.id}
 426                     prompt={prompt}
 427                     player={props.player}
 428                   />
 429       )}
 430     </div>
 431   );
 432 });
 433
 434 const LetsPlay = React.memo(props => {
 435
 436   const quorum = Math.round((props.num_players + 1) / 2);
 437   const max_votes = props.prompts.reduce(
 438     (max_so_far, v) => Math.max(max_so_far, v.votes.length), 0);
 439
 440   if (max_votes < quorum)
 441     return null;
 442
 443   const candidates = props.prompts.filter(p => p.votes.length >= quorum);
 444   const index = Math.floor(Math.random() * candidates.length);
 445   const winner = candidates[index];
 446
 447   return (
 448     <div className="lets-play">
 449       <h2>Let's Play</h2>
 450       <p>
 451         That should be enough voting. If you're not waiting for any
 452         other players to join, then let's start.
 453       </p>
 454       <button
 455         className="lets-play"
 456         onClick={() => fetch_post_json(`start/${winner.id}`) }
 457       >
 458         Start Game
 459       </button>
 460     </div>
 461   );
 462 });
 463
 464 class Ambiguities extends React.PureComponent {
 465
 466   constructor(props) {
 467     super(props);
 468
 469     function canonize(word) {
 470       return word.replace(/((a|an|the) )?(.*?)s?$/i, '$3');
 471     }
 472
 473     const word_sets = [];
 474
 475     for (let word of props.words) {
 476       const word_canon = canonize(word);
 477       let found_match = false;
 478       for (let set of word_sets) {
 479         const set_canon = canonize(set.values().next().value);
 480         if (word_canon === set_canon) {
 481           set.add(word);
 482           found_match = true;;
 483           break;
 484         }
 485       }
 486       if (! found_match) {
 487         const set = new Set();
 488         set.add(word);
 489         word_sets.push(set);
 490       }
 491     }
 492
 493     this.state = {
 494       word_sets: word_sets,
 495       selected: null,
 496       starred: null
 497     };
 498
 499     this.submitted = false;
 500     this.judging_sent_recently = false;
 501   }
 502
 503   async handle_submit() {
 504
 505     /* Don't submit a second time. */
 506     if (this.submitted)
 507       return;
 508
 509     const response = await fetch_post_json(
 510       `judged/${this.props.prompt.id}`,{
 511         word_groups: this.state.word_sets.map(set => Array.from(set)),
 512         kudos: this.state.starred ? Array.from(this.state.starred) : null
 513       }
 514     );
 515
 516     if (response.status === 200) {
 517       const result = await response.json();
 518       if (! result.valid) {
 519         add_message("danger", result.message);
 520         return;
 521       }
 522     } else {
 523       add_message("danger", "An error occurred submitting the results of your judging");
 524       return;
 525     }
 526
 527     this.submitted = true;
 528   }
 529
 530   handle_click(word) {
 531
 532     /* Let the server know we are doing some judging, (but rate limit
 533      * this so we don't send a "judging" notification more frquently
 534      * than necessary.
 535      */
 536     if (! this.judging_sent_recently) {
 537       fetch_post_json(`judging/${this.props.prompt.id}`);
 538       this.judging_sent_recently = true;
 539       setTimeout(() => { this.judging_sent_recently = false; }, 1000);
 540     }
 541
 542     if (this.state.selected == word) {
 543       /* Second click on same word removes the word from the group. */
 544       const idx = this.state.word_sets.findIndex(s => s.has(word));
 545       const set = this.state.word_sets[idx];
 546       if (set.size === 1) {
 547         /* When the word is already alone, there's nothing to do but
 548          * to un-select it. */
 549         this.setState({
 550           selected: null
 551         });
 552         return;
 553       }
 554
 555       const new_set = new Set([...set].filter(w => w !== word));
 556       this.setState({
 557         selected: null,
 558         word_sets: [...this.state.word_sets.slice(0, idx),
 559                     new_set,
 560                     new Set().add(word),
 561                     ...this.state.word_sets.slice(idx+1)]
 562       });
 563     } else if (this.state.selected) {
 564       /* Click of a second word groups the two together. */
 565       const idx1 = this.state.word_sets.findIndex(s => s.has(this.state.selected));
 566       const idx2 = this.state.word_sets.findIndex(s => s.has(word));
 567       const set1 = this.state.word_sets[idx1];
 568       const set2 = this.state.word_sets[idx2];
 569       const new_set = new Set([...set2, ...set1]);
 570       if (idx1 < idx2) {
 571         this.setState({
 572           selected: null,
 573           word_sets: [...this.state.word_sets.slice(0, idx1),
 574                       ...this.state.word_sets.slice(idx1 + 1, idx2),
 575                       new_set,
 576                       ...this.state.word_sets.slice(idx2 + 1)]
 577         });
 578       } else {
 579         this.setState({
 580           selected: null,
 581           word_sets: [...this.state.word_sets.slice(0, idx2),
 582                       new_set,
 583                       ...this.state.word_sets.slice(idx2 + 1, idx1),
 584                       ...this.state.word_sets.slice(idx1 + 1)]
 585         });
 586       }
 587     } else {
 588       /* First click of a word selects it. */
 589       this.setState({
 590         selected: word
 591       });
 592     }
 593   }
 594
 595   render() {
 596     let move_on_button = null;
 597
 598     if (this.props.idle) {
 599       move_on_button = (
 600         <button
 601           className="vote-button"
 602           onClick={() => fetch_post_json(`end-judging/${this.props.prompt.id}`) }
 603         >
 604           Move On Without Their Input
 605           <div className="vote-choices">
 606             {[...this.props.votes].map(v => {
 607               return (
 608                 <div
 609                   key={v}
 610                   className="vote-choice"
 611                 >
 612                   {v}
 613                   </div>
 614               );
 615             })}
 616           </div>
 617         </button>
 618       );
 619     }
 620
 621     let still_waiting = null;
 622     const judging_players = Object.keys(this.props.players_judging);
 623     if (judging_players.length) {
 624       still_waiting = (
 625         <div>
 626           <p>
 627             Still waiting for the following player
 628             {judging_players.length > 1 ? 's' : '' }
 629             :
 630           </p>
 631           <ul>
 632             {judging_players.map(player => {
 633               return (
 634                 <li
 635                   key={player}
 636                 >
 637                   {player}{' '}
 638                   <span className=
 639                   {this.props.players_judging[player].active ?
 640                    "typing active"
 641                    :
 642                    "typing idle"}>
 643                     <span>{'.'}</span><span>{'.'}</span><span>{'.'}</span>
 644                   </span>
 645                 </li>
 646               );
 647             })}
 648           </ul>
 649         </div>
 650       );
 651     }
 652
 653     if (this.props.players_judged.has(this.props.player.name)) {
 654       return (
 655         <div className="please-wait">
 656           <h2>Submission received</h2>
 657           <p>
 658             The following players have completed judging:{' '}
 659             {[...this.props.players_judged].join(', ')}
 660           </p>
 661           {still_waiting}
 662           {move_on_button}
 663
 664         </div>
 665       );
 666     }
 667
 668     const btn_class = "ambiguity-button";
 669     const btn_selected_class = btn_class + " selected";
 670
 671     return (
 672       <div className="ambiguities">
 673         <h2>Judging Answers</h2>
 674         <p>
 675           Click on each pair of answers that should be scored as equivalent,
 676           (and click any word twice to split it out from a group). Remember,
 677           what goes around comes around, so it's best to be generous when
 678           judging.
 679         </p>
 680         <h2>{this.props.prompt.prompt}</h2>
 681         {this.state.word_sets.map(set => {
 682           return (
 683             <div
 684               className="ambiguity-group"
 685               key={Array.from(set)[0]}
 686             >
 687               {Array.from(set).map(word => {
 688                 return (
 689                   <button
 690                     className={this.state.selected === word ?
 691                                btn_selected_class : btn_class }
 692                     key={word}
 693                     onClick={() => this.handle_click(word)}
 694                   >
 695                     {word}
 696                   </button>
 697                 );
 698               })}
 699               <span
 700                 className={this.state.starred === set ?
 701                            "star-button selected" : "star-button"
 702                           }
 703                 onClick={(event) => {
 704                   event.stopPropagation();
 705                   this.setState({
 706                     starred: set
 707                   });
 708                 }}
 709               >
 710               {this.state.starred === set ?
 711                '★' : '☆'
 712               }
 713               </span>
 714             </div>
 715           );
 716         })}
 717         <p>
 718           Click here when done judging:<br/>
 719           <button
 720             onClick={() => this.handle_submit()}
 721           >
 722             Send
 723           </button>
 724         </p>
 725       </div>
 726     );
 727   }
 728 }
 729
 730 class ActivePrompt extends React.PureComponent {
 731
 732   constructor(props) {
 733     super(props);
 734     const items = props.prompt.items;
 735
 736     this.submitted = false;
 737
 738     this.answers = [...Array(items)].map(() => React.createRef());
 739     this.answering_sent_recently = false;
 740
 741     this.handle_submit = this.handle_submit.bind(this);
 742     this.handle_change = this.handle_change.bind(this);
 743   }
 744
 745   handle_change(event) {
 746     /* We don't care (or even look) at what the player is typing at
 747      * this point. We simply want to be informed that the player _is_
 748      * typing so that we can tell the server (which will tell other
 749      * players) that there is activity here.
 750      */
 751
 752     /* Rate limit so that we don't send an "answering" notification
 753      * more frequently than necessary.
 754      */
 755     if (! this.answering_sent_recently) {
 756       fetch_post_json(`answering/${this.props.prompt.id}`);
 757       this.answering_sent_recently = true;
 758       setTimeout(() => { this.answering_sent_recently = false; }, 1000);
 759     }
 760   }
 761
 762   async handle_submit(event) {
 763     const form = event.currentTarget;
 764
 765     /* Prevent the default page-changing form-submission behavior. */
 766     event.preventDefault();
 767
 768     /* And don't submit a second time. */
 769     if (this.submitted)
 770       return;
 771
 772     const response = await fetch_post_json(`answer/${this.props.prompt.id}`, {
 773       answers: this.answers.map(r => r.current.value)
 774     });
 775     if (response.status === 200) {
 776       const result = await response.json();
 777       if (! result.valid) {
 778         add_message("danger", result.message);
 779         return;
 780       }
 781     } else {
 782       add_message("danger", "An error occurred submitting your answers");
 783       return;
 784     }
 785
 786     /* Everything worked. Server is happy with our answers. */
 787     form.reset();
 788     this.submitted = true;
 789   }
 790
 791   render() {
 792     let move_on_button = null;
 793     if (this.props.idle) {
 794       move_on_button =(
 795         <button
 796           className="vote-button"
 797           onClick={() => fetch_post_json(`end-answers/${this.props.prompt.id}`) }
 798         >
 799           Move On Without Their Answers
 800           <div className="vote-choices">
 801             {[...this.props.votes].map(v => {
 802               return (
 803                 <div
 804                   key={v}
 805                   className="vote-choice"
 806                 >
 807                   {v}
 808                 </div>
 809               );
 810             })}
 811           </div>
 812         </button>
 813       );
 814     }
 815
 816     let still_waiting = null;
 817     const answering_players = Object.keys(this.props.players_answering);;
 818     if (answering_players.length) {
 819       still_waiting = (
 820         <div>
 821           <p>
 822             Still waiting for the following player
 823             {answering_players.length > 1 ? 's' : ''}
 824             :
 825           </p>
 826           <ul>
 827             {answering_players.map(player => {
 828               return (
 829                 <li
 830                   key={player}
 831                 >
 832                   {player}{' '}
 833                   <span className=
 834                   {this.props.players_answering[player].active ?
 835                    "typing active"
 836                    :
 837                    "typing idle"}>
 838                     <span>{'.'}</span><span>{'.'}</span><span>{'.'}</span>
 839                   </span>
 840                 </li>
 841               );
 842             })}
 843           </ul>
 844         </div>
 845       );
 846     }
 847
 848     if (this.props.players_answered.has(this.props.player.name)) {
 849       return (
 850         <div className="please-wait">
 851           <h2>Submission received</h2>
 852           <p>
 853             The following players have submitted their answers:{' '}
 854             {[...this.props.players_answered].join(', ')}
 855           </p>
 856           {still_waiting}
 857           {move_on_button}
 858
 859         </div>
 860       );
 861     }
 862
 863     return (
 864       <div className="active-prompt">
 865         <h2>The Game of Empathy</h2>
 866         <p>
 867           Remember, you're trying to match your answers with
 868           what the other players submit.
 869           Give {this.props.prompt.items} answer
 870           {this.props.prompt.items > 1 ? 's' : ''} for the following prompt:
 871         </p>
 872         <h2>{this.props.prompt.prompt}</h2>
 873         <form onSubmit={this.handle_submit}>
 874           {[...Array(this.props.prompt.items)].map((whocares,i) => {
 875             return (
 876               <div
 877                 key={i}
 878                 className="form-field large">
 879                 <input
 880                   type="text"
 881                   name={`answer_${i}`}
 882                   required
 883                   autoComplete="off"
 884                   onChange={this.handle_change}
 885                   ref={this.answers[i]}
 886                 />
 887               </div>
 888             );
 889           })}
 890
 891           <div
 892             key="submit-button"
 893             className="form-field large">
 894             <button type="submit">
 895               Send
 896             </button>
 897           </div>
 898
 899         </form>
 900       </div>
 901     );
 902   }
 903 }
 904
 905 class Game extends React.PureComponent {
 906   constructor(props) {
 907     super(props);
 908     this.state = {
 909       game_info: {},
 910       player_info: {},
 911       other_players: [],
 912       prompts: [],
 913       active_prompt: null,
 914       players_answered: new Set(),
 915       players_answering: {},
 916       answering_idle: false,
 917       end_answers_votes: new Set(),
 918       ambiguities: null,
 919       players_judged: new Set(),
 920       players_judging: {},
 921       judging_idle: false,
 922       end_judging_votes: new Set(),
 923       scores: null,
 924       new_game_votes: new Set(),
 925       ready: false
 926     };
 927   }
 928
 929   set_game_info(info) {
 930     this.setState({
 931       game_info: info
 932     });
 933   }
 934
 935   set_player_info(info) {
 936     this.setState({
 937       player_info: info
 938     });
 939   }
 940
 941   set_other_player_info(info) {
 942     const other_players_copy = [...this.state.other_players];
 943     const idx = other_players_copy.findIndex(o => o.id === info.id);
 944     if (idx >= 0) {
 945       other_players_copy[idx] = info;
 946     } else {
 947       other_players_copy.push(info);
 948     }
 949     this.setState({
 950       other_players: other_players_copy
 951     });
 952   }
 953
 954   remove_player(info) {
 955     this.setState({
 956       other_players: this.state.other_players.filter(o => o.id !== info.id)
 957     });
 958   }
 959
 960   reset_game_state() {
 961     this.setState({
 962       prompts: [],
 963       active_prompt: null,
 964       players_answered: new Set(),
 965       players_answering: {},
 966       answering_idle: false,
 967       end_answers_votes: new Set(),
 968       ambiguities: null,
 969       players_judged: new Set(),
 970       players_judging: {},
 971       judging_idle: false,
 972       end_judging_votes: new Set(),
 973       scores: null,
 974       new_game_votes: new Set(),
 975       ready: false
 976     });
 977   }
 978
 979   set_prompts(prompts) {
 980     this.setState({
 981       prompts: prompts
 982     });
 983   }
 984
 985   add_or_update_prompt(prompt) {
 986     const prompts_copy = [...this.state.prompts];
 987     const idx = prompts_copy.findIndex(p => p.id === prompt.id);
 988     if (idx >= 0) {
 989       prompts_copy[idx] = prompt;
 990     } else {
 991       prompts_copy.push(prompt);
 992     }
 993     this.setState({
 994       prompts: prompts_copy
 995     });
 996   }
 997
 998   set_active_prompt(prompt) {
 999     this.setState({
1000       active_prompt: prompt
1001     });
1002   }
1003
1004   set_players_answered(players) {
1005     this.setState({
1006       players_answered: new Set(players)
1007     });
1008   }
1009
1010   set_player_answered(player) {
1011     const new_players_answering = {...this.state.players_answering};
1012     delete new_players_answering[player];
1013
1014     this.setState({
1015       players_answered: new Set([...this.state.players_answered, player]),
1016       players_answering: new_players_answering
1017     });
1018   }
1019
1020   set_players_answering(players) {
1021     const players_answering = {};
1022     for (let player of players) {
1023       players_answering[player] = {active: false};
1024     }
1025     this.setState({
1026       players_answering: players_answering
1027     });
1028   }
1029
1030   set_player_answering(player) {
1031     /* Set the player as actively answering now. */
1032     this.setState({
1033       players_answering: {
1034         ...this.state.players_answering,
1035         [player]: {active: true}
1036       }
1037     });
1038     /* And arrange to have them marked idle very shortly.
1039      *
1040      * Note: This timeout is intentionally very, very short. We only
1041      * need it long enough that the browser has latched onto the state
1042      * change to "active" above. We actually use a CSS transition
1043      * delay to control the user-perceptible length of time after
1044      * which an active player appears inactive.
1045      */
1046     setTimeout(() => {
1047       this.setState({
1048         players_answering: {
1049           ...this.state.players_answering,
1050           [player]: {active: false}
1051         }
1052       });
1053     }, 100);
1054   }
1055
1056   set_answering_idle(value) {
1057     this.setState({
1058       answering_idle: value
1059     });
1060   }
1061
1062   set_end_answers(players) {
1063     this.setState({
1064       end_answers_votes: new Set(players)
1065     });
1066   }
1067
1068   set_player_vote_end_answers(player) {
1069     this.setState({
1070       end_answers_votes: new Set([...this.state.end_answers_votes, player])
1071     });
1072   }
1073
1074   set_player_unvote_end_answers(player) {
1075     this.setState({
1076       end_answers_votes: new Set([...this.state.end_answers_votes].filter(p => p !== player))
1077     });
1078   }
1079
1080   set_ambiguities(ambiguities) {
1081     this.setState({
1082       ambiguities: ambiguities
1083     });
1084   }
1085
1086   set_players_judged(players) {
1087     this.setState({
1088       players_judged: new Set(players)
1089     });
1090   }
1091
1092   set_player_judged(player) {
1093     const new_players_judging = {...this.state.players_judging};
1094     delete new_players_judging[player];
1095
1096     this.setState({
1097       players_judged: new Set([...this.state.players_judged, player]),
1098       players_judging: new_players_judging
1099     });
1100   }
1101
1102   set_players_judging(players) {
1103     const players_judging = {};
1104     for (let player of players) {
1105       players_judging[player] = {active: false};
1106     }
1107     this.setState({
1108       players_judging: players_judging
1109     });
1110   }
1111
1112   set_player_judging(player) {
1113     /* Set the player as actively judging now. */
1114     this.setState({
1115       players_judging: {
1116         ...this.state.players_judging,
1117         [player]: {active: true}
1118       }
1119     });
1120     /* And arrange to have them marked idle very shortly.
1121      *
1122      * Note: This timeout is intentionally very, very short. We only
1123      * need it long enough that the browser has latched onto the state
1124      * change to "active" above. We actually use a CSS transition
1125      * delay to control the user-perceptible length of time after
1126      * which an active player appears inactive.
1127      */
1128     setTimeout(() => {
1129       this.setState({
1130         players_judging: {
1131           ...this.state.players_judging,
1132           [player]: {active: false}
1133         }
1134       });
1135     }, 100);
1136
1137   }
1138
1139   set_judging_idle(value) {
1140     this.setState({
1141       judging_idle: value
1142     });
1143   }
1144
1145   set_end_judging(players) {
1146     this.setState({
1147       end_judging_votes: new Set(players)
1148     });
1149   }
1150
1151   set_player_vote_end_judging(player) {
1152     this.setState({
1153       end_judging_votes: new Set([...this.state.end_judging_votes, player])
1154     });
1155   }
1156
1157   set_player_unvote_end_judging(player) {
1158     this.setState({
1159       end_judging_votes: new Set([...this.state.end_judging_votes].filter(p => p !== player))
1160     });
1161   }
1162
1163   set_scores(scores) {
1164     this.setState({
1165       scores: scores
1166     });
1167   }
1168
1169   set_new_game_votes(players) {
1170     this.setState({
1171       new_game_votes: new Set(players)
1172     });
1173   }
1174
1175   set_player_vote_new_game(player) {
1176     this.setState({
1177       new_game_votes: new Set([...this.state.new_game_votes, player])
1178     });
1179   }
1180
1181   set_player_unvote_new_game(player) {
1182     this.setState({
1183       new_game_votes: new Set([...this.state.new_game_votes].filter(p => p !== player))
1184     });
1185   }
1186
1187   state_ready() {
1188     this.setState({
1189       ready: true
1190     });
1191   }
1192
1193   render() {
1194     const state = this.state;
1195     const players_total = 1 + state.other_players.length;
1196
1197     if (state.scores) {
1198
1199       let perfect_score = 0;
1200       for (let i = 0;
1201            i < state.active_prompt.items &&
1202            i < state.scores.words.length;
1203            i++)
1204       {
1205         perfect_score += state.scores.words[i].players.length;
1206       }
1207
1208       return (
1209         <div className="scores">
1210           <h2>{state.active_prompt.prompt}</h2>
1211           <h2>Scores</h2>
1212           <ul>
1213             {state.scores.scores.map(score => {
1214               let perfect = null;
1215               if (score.score == perfect_score) {
1216                 perfect = <span className="label">Perfect!</span>;
1217               }
1218               return (
1219                 <li key={score.players[0]}>
1220                   {score.players.join("/")}: {score.score} {perfect}
1221                 </li>
1222               );
1223             })}
1224           </ul>
1225           <h2>Words submitted</h2>
1226           <ul>
1227             {state.scores.words.map(word => {
1228               return (
1229                 <li key={word.word}>
1230                   {word.word} ({word.players.length}): {word.players.join(', ')}
1231                 </li>
1232               );
1233             })}
1234           </ul>
1235           <button
1236             className="vote-button"
1237             onClick={() => fetch_post_json(`new-game/${state.active_prompt.id}`) }
1238           >
1239             New Game
1240             <div className="vote-choices">
1241               {[...state.new_game_votes].map(v => {
1242                 return (
1243                   <div
1244                     key={v}
1245                     className="vote-choice"
1246                   >
1247                     {v}
1248                   </div>
1249                 );
1250               })}
1251             </div>
1252           </button>
1253         </div>
1254       );
1255     }
1256
1257     if (state.ambiguities){
1258       return <Ambiguities
1259                prompt={state.active_prompt}
1260                words={state.ambiguities}
1261                player={state.player_info}
1262                players_judged={state.players_judged}
1263                players_judging={state.players_judging}
1264                idle={state.judging_idle}
1265                votes={state.end_judging_votes}
1266              />;
1267     }
1268
1269     if (state.active_prompt) {
1270       return <ActivePrompt
1271                prompt={state.active_prompt}
1272                player={state.player_info}
1273                players_answered={state.players_answered}
1274                players_answering={state.players_answering}
1275                idle={state.answering_idle}
1276                votes={state.end_answers_votes}
1277              />;
1278     }
1279
1280     if (! state.ready)
1281       return null;
1282
1283     return [
1284       <GameInfo
1285         key="game-info"
1286         id={state.game_info.id}
1287         url={state.game_info.url}
1288       />,
1289       <PlayerInfo
1290         key="player-info"
1291         game={this}
1292         player={state.player_info}
1293         other_players={state.other_players}
1294       />,
1295       <p key="spacer"></p>,
1296       <CategoryRequest
1297         key="category-request"
1298       />,
1299       <PromptOptions
1300         key="prompts"
1301         prompts={state.prompts}
1302         player={state.player_info}
1303       />,
1304       <LetsPlay
1305         key="lets-play"
1306         num_players={1+state.other_players.length}
1307         prompts={state.prompts}
1308       />
1309     ];
1310   }
1311 }
1312
1313 ReactDOM.render(<Game
1314                   ref={(me) => window.game = me}
1315                 />, document.getElementById("empathy"));