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

   1 function undisplay(element) {
   2   element.style.display="none";
   3 }
   4
   5 function add_message(severity, message) {
   6   message = `<div class="message ${severity}" onclick="undisplay(this)">
   7 <span class="hide-button" onclick="undisplay(this.parentElement)">&times;</span>
   8 ${message}
   9 </div>`;
  10   const message_area = document.getElementById('message-area');
  11   message_area.insertAdjacentHTML('beforeend', message);
  12 }
  13
  14 /*********************************************************
  15  * Handling server-sent event stream                     *
  16  *********************************************************/
  17
  18 const events = new EventSource("events");
  19
  20 events.onerror = function(event) {
  21   if (event.target.readyState === EventSource.CLOSED) {
  22     setTimeout(() => {
  23       add_message("danger", "Connection to server lost.");
  24     }, 1000);
  25   }
  26 };
  27
  28 events.addEventListener("game-info", event => {
  29   const info = JSON.parse(event.data);
  30
  31   window.game.set_game_info(info);
  32 });
  33
  34 events.addEventListener("player-info", event => {
  35   const info = JSON.parse(event.data);
  36
  37   window.game.set_player_info(info);
  38 });
  39
  40 events.addEventListener("player-enter", event => {
  41   const info = JSON.parse(event.data);
  42
  43   window.game.set_other_player_info(info);
  44 });
  45
  46 events.addEventListener("player-update", event => {
  47   const info = JSON.parse(event.data);
  48
  49   if (info.id === window.game.state.player_info.id)
  50     window.game.set_player_info(info);
  51   else
  52     window.game.set_other_player_info(info);
  53 });
  54
  55 events.addEventListener("game-state", event => {
  56   const state = JSON.parse(event.data);
  57
  58   window.game.set_prompts(state.prompts);
  59
  60   window.game.set_active_prompt(state.active_prompt);
  61
  62   window.game.set_scores(state.scores);
  63 });
  64
  65 events.addEventListener("prompt", event => {
  66   const prompt = JSON.parse(event.data);
  67
  68   window.game.add_or_update_prompt(prompt);
  69 });
  70
  71 events.addEventListener("start", event => {
  72   const prompt = JSON.parse(event.data);
  73
  74   window.game.set_active_prompt(prompt);
  75 });
  76
  77 events.addEventListener("answered", event => {
  78   const players_answered = JSON.parse(event.data);
  79
  80   window.game.set_players_answered(players_answered);
  81 });
  82
  83 events.addEventListener("scores", event => {
  84   const scores = JSON.parse(event.data);
  85
  86   window.game.set_scores(scores);
  87 });
  88
  89 /*********************************************************
  90  * Game and supporting classes                           *
  91  *********************************************************/
  92
  93 function copy_to_clipboard(id)
  94 {
  95   const tmp = document.createElement("input");
  96   tmp.setAttribute("value", document.getElementById(id).innerHTML);
  97   document.body.appendChild(tmp);
  98   tmp.select();
  99   document.execCommand("copy");
 100   document.body.removeChild(tmp);
 101 }
 102
 103 const GameInfo = React.memo(props => {
 104   if (! props.id)
 105     return null;
 106
 107   return (
 108     <div className="game-info">
 109       <span className="game-id">{props.id}</span>
 110       {" "}
 111       Share this link to invite friends:{" "}
 112       <span id="game-share-url">{props.url}</span>
 113       {" "}
 114       <button
 115         className="inline"
 116         onClick={() => copy_to_clipboard('game-share-url')}
 117       >Copy Link</button>
 118     </div>
 119   );
 120 });
 121
 122 const PlayerInfo = React.memo(props => {
 123   if (! props.player.id)
 124     return null;
 125
 126   return (
 127     <div className="player-info">
 128       <span className="players-header">Players: </span>
 129       {props.player.name}
 130       {props.player.score > 0 ? ` (${props.player.score})` : ""}
 131       {props.other_players.map(other => (
 132         <span key={other.id}>
 133           {", "}
 134           {other.name}
 135           {other.score > 0 ? ` (${other.score})` : ""}
 136         </span>
 137       ))}
 138     </div>
 139   );
 140 });
 141
 142 function fetch_method_json(method, api = '', data = {}) {
 143   const response = fetch(api, {
 144     method: method,
 145     headers: {
 146       'Content-Type': 'application/json'
 147     },
 148     body: JSON.stringify(data)
 149   });
 150   return response;
 151 }
 152
 153 function fetch_post_json(api = '', data = {}) {
 154   return fetch_method_json('POST', api, data);
 155 }
 156
 157 async function fetch_put_json(api = '', data = {}) {
 158   return fetch_method_json('PUT', api, data);
 159 }
 160
 161 class CategoryRequest extends React.PureComponent {
 162   constructor(props) {
 163     super(props);
 164     this.category = React.createRef();
 165
 166     this.handle_change = this.handle_change.bind(this);
 167     this.handle_submit = this.handle_submit.bind(this);
 168   }
 169
 170   handle_change(event) {
 171     const category_input = this.category.current;
 172     const category = category_input.value;
 173
 174     if (/[0-9]/.test(category))
 175       category_input.setCustomValidity("");
 176   }
 177
 178   handle_submit(event) {
 179     const form = event.currentTarget;
 180     const category_input = this.category.current;
 181     const category = category_input.value;
 182
 183     /* Prevent the default page-changing form-submission behavior. */
 184     event.preventDefault();
 185
 186     const match = category.match(/[0-9]+/);
 187     if (match === null) {
 188       category_input.setCustomValidity("Category must include a number");
 189       form.reportValidity();
 190       return;
 191     }
 192
 193     fetch_post_json("prompts", {
 194       items: parseInt(match[0], 10),
 195       prompt: category
 196     });
 197
 198     form.reset();
 199   }
 200
 201   render() {
 202     return (
 203       <div className="category-request">
 204         <h2>Submit a Category</h2>
 205         <p>
 206           Suggest a category to play. Don't forget to include the
 207           number of items for each person to submit.
 208         </p>
 209
 210         <form onSubmit={this.handle_submit} >
 211           <div className="form-field large">
 212             <input
 213               type="text"
 214               id="category"
 215               placeholder="6 things at the beach"
 216               required
 217               autoComplete="off"
 218               onChange={this.handle_change}
 219               ref={this.category}
 220             />
 221           </div>
 222
 223           <div className="form-field large">
 224             <button type="submit">
 225               Send
 226             </button>
 227           </div>
 228
 229         </form>
 230       </div>
 231     );
 232   }
 233 }
 234
 235 const PromptOptions = React.memo(props => {
 236
 237   if (props.prompts.length === 0)
 238     return null;
 239
 240   return (
 241     <div className="prompt-options">
 242       <h2>Vote on Categories</h2>
 243       <p>
 244         Select any categories below that you'd like to play.
 245         You can choose as many as you'd like.
 246       </p>
 247       {props.prompts.map(p => {
 248         return (
 249           <button
 250             className="vote-button"
 251             key={p.id}
 252             onClick={() => fetch_post_json(`vote/${p.id}`) }
 253           >
 254             {p.prompt}
 255             <div className="vote-choices">
 256               {p.votes.map(v => {
 257                 return (
 258                   <div
 259                     key={v}
 260                     className="vote-choice"
 261                   >
 262                     {v}
 263                   </div>
 264                 );
 265               })}
 266             </div>
 267           </button>
 268         );
 269       })}
 270     </div>
 271   );
 272 });
 273
 274 const LetsPlay = React.memo(props => {
 275
 276   function handle_click(prompt_id) {
 277     fetch_post_json
 278   }
 279
 280   const quorum = Math.round((props.num_players + 1) / 2);
 281   const max_votes = props.prompts.reduce(
 282     (max_so_far, v) => Math.max(max_so_far, v.votes.length), 0);
 283
 284   if (max_votes < quorum)
 285     return null;
 286
 287   const candidates = props.prompts.filter(p => p.votes.length >= quorum);
 288   const index = Math.floor(Math.random() * candidates.length);
 289   const winner = candidates[index];
 290
 291   return (
 292     <div className="lets-play">
 293       <h2>Let's Play</h2>
 294       <p>
 295         That should be enough voting. If you're not waiting for any
 296         other players to join, then let's start.
 297       </p>
 298       <button
 299         className="lets-play"
 300         onClick={() => fetch_post_json(`start/${winner.id}`) }
 301       >
 302         Start Game
 303       </button>
 304     </div>
 305   );
 306 });
 307
 308 class ActivePrompt extends React.PureComponent {
 309
 310   constructor(props) {
 311     super(props);
 312     const items = props.prompt.items;
 313
 314     this.state = {
 315       submitted: false
 316     };
 317
 318     this.answers = [...Array(items)].map(() => React.createRef());
 319     this.handle_submit = this.handle_submit.bind(this);
 320   }
 321
 322   async handle_submit(event) {
 323     const form = event.currentTarget;
 324
 325     /* Prevent the default page-changing form-submission behavior. */
 326     event.preventDefault();
 327
 328     const response = await fetch_post_json(`answer/${this.props.prompt.id}`, {
 329       answers: this.answers.map(r => r.current.value)
 330     });
 331     if (response.status == 200) {
 332       const result = await response.json();
 333       if (! result.valid) {
 334         add_message("danger", result.message);
 335         return;
 336       }
 337     } else {
 338       add_message("danger", "An error occurred submitting your answers");
 339       return;
 340     }
 341
 342     /* Everything worked. Server is happy with our answers. */
 343     form.reset();
 344     this.setState({
 345         submitted: true
 346     });
 347   }
 348
 349   render() {
 350     if (this.state.submitted)
 351       return (
 352         <div className="please-wait">
 353           <h2>{this.props.players_answered}/
 354             {this.props.players_total} players have responded</h2>
 355           <p>
 356             Please wait for the rest of the players to submit their answers.
 357           </p>
 358         </div>
 359       );
 360
 361     return (
 362       <div className="active-prompt">
 363         <h2>The Game of Empathy</h2>
 364         <p>
 365           Remember, you're trying to match your answers with
 366           what the other players submit.
 367           Give {this.props.prompt.items} answers for the following prompt:
 368         </p>
 369         <h2>{this.props.prompt.prompt}</h2>
 370         <form onSubmit={this.handle_submit}>
 371           {[...Array(this.props.prompt.items)].map((whocares,i) => {
 372             return (
 373               <div
 374                 key={i}
 375                 className="form-field large">
 376                 <input
 377                   type="text"
 378                   name={`answer_${i}`}
 379                   required
 380                   autoComplete="off"
 381                   ref={this.answers[i]}
 382                 />
 383               </div>
 384             );
 385           })}
 386
 387           <div
 388             key="submit-button"
 389             className="form-field large">
 390             <button type="submit">
 391               Send
 392             </button>
 393           </div>
 394
 395         </form>
 396       </div>
 397     );
 398   }
 399 }
 400
 401 class Game extends React.PureComponent {
 402   constructor(props) {
 403     super(props);
 404     this.state = {
 405       game_info: {},
 406       player_info: {},
 407       other_players: [],
 408       prompts: [],
 409       active_prompt: null,
 410       players_answered: 0
 411     };
 412   }
 413
 414   set_game_info(info) {
 415     this.setState({
 416       game_info: info
 417     });
 418   }
 419
 420   set_player_info(info) {
 421     this.setState({
 422       player_info: info
 423     });
 424   }
 425
 426   set_other_player_info(info) {
 427     const other_players_copy = [...this.state.other_players];
 428     const idx = other_players_copy.findIndex(o => o.id === info.id);
 429     if (idx >= 0) {
 430       other_players_copy[idx] = info;
 431     } else {
 432       other_players_copy.push(info);
 433     }
 434     this.setState({
 435       other_players: other_players_copy
 436     });
 437   }
 438
 439   set_prompts(prompts) {
 440     this.setState({
 441       prompts: prompts
 442     });
 443   }
 444
 445   add_or_update_prompt(prompt) {
 446     const prompts_copy = [...this.state.prompts];
 447     const idx = prompts_copy.findIndex(p => p.id === prompt.id);
 448     if (idx >= 0) {
 449       prompts_copy[idx] = prompt;
 450     } else {
 451       prompts_copy.push(prompt);
 452     }
 453     this.setState({
 454       prompts: prompts_copy
 455     });
 456   }
 457
 458   set_active_prompt(prompt) {
 459     this.setState({
 460       active_prompt: prompt
 461     });
 462   }
 463
 464   set_players_answered(players_answered) {
 465     this.setState({
 466       players_answered: players_answered
 467     });
 468   }
 469
 470   set_scores(scores) {
 471     this.setState({
 472       scores: scores
 473     });
 474   }
 475
 476   render() {
 477     const state = this.state;
 478     const players_total = 1 + state.other_players.length;
 479
 480     if (state.scores) {
 481       return (
 482         <div className="scores">
 483           <h2>Scores</h2>
 484           <ul>
 485             {state.scores.scores.map(score => {
 486               return (
 487                 <li key={score.player}>
 488                   {score.player}: {score.score}
 489                 </li>
 490               );
 491             })}
 492           </ul>
 493           <h2>Words submitted</h2>
 494           <ul>
 495             {state.scores.words.map(word => {
 496               return (
 497                 <li key={word.word}>
 498                   {word.word}:
 499                   {word.players.map(p => {
 500                     return (
 501                       <span key={p}>{p}{" "}</span>
 502                     );
 503                   })}
 504                 </li>
 505               );
 506             })}
 507           </ul>
 508           <button
 509             className="new-game"
 510             onClick={() => fetch_post_json('reset') }
 511           >
 512             New Game
 513           </button>
 514         </div>
 515       );
 516     }
 517
 518     if (state.active_prompt) {
 519       return <ActivePrompt
 520                prompt={state.active_prompt}
 521                players_answered={state.players_answered}
 522                players_total={players_total}
 523              />;
 524     }
 525
 526     return [
 527       <GameInfo
 528         key="game-info"
 529         id={state.game_info.id}
 530         url={state.game_info.url}
 531       />,
 532       <PlayerInfo
 533         key="player-info"
 534         game={this}
 535         player={state.player_info}
 536         other_players={state.other_players}
 537       />,
 538       <p key="spacer"></p>,
 539       <CategoryRequest
 540         key="category-request"
 541       />,
 542       <PromptOptions
 543         key="prompts"
 544         prompts={state.prompts}
 545       />,
 546       <LetsPlay
 547         key="lets-play"
 548         num_players={1+state.other_players.length}
 549         prompts={state.prompts}
 550       />
 551     ];
 552   }
 553 }
 554
 555 ReactDOM.render(<Game
 556                   ref={(me) => window.game = me}
 557                 />, document.getElementById("empathy"));