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.other_players.map(other => (
 131         <span key={other.id}>
 132           {", "}
 133           {other.name}
 134         </span>
 135       ))}
 136     </div>
 137   );
 138 });
 139
 140 function fetch_method_json(method, api = '', data = {}) {
 141   const response = fetch(api, {
 142     method: method,
 143     headers: {
 144       'Content-Type': 'application/json'
 145     },
 146     body: JSON.stringify(data)
 147   });
 148   return response;
 149 }
 150
 151 function fetch_post_json(api = '', data = {}) {
 152   return fetch_method_json('POST', api, data);
 153 }
 154
 155 async function fetch_put_json(api = '', data = {}) {
 156   return fetch_method_json('PUT', api, data);
 157 }
 158
 159 class CategoryRequest extends React.PureComponent {
 160   constructor(props) {
 161     super(props);
 162     this.category = React.createRef();
 163
 164     this.handle_change = this.handle_change.bind(this);
 165     this.handle_submit = this.handle_submit.bind(this);
 166   }
 167
 168   handle_change(event) {
 169     const category_input = this.category.current;
 170     const category = category_input.value;
 171
 172     if (/[0-9]/.test(category))
 173       category_input.setCustomValidity("");
 174   }
 175
 176   handle_submit(event) {
 177     const form = event.currentTarget;
 178     const category_input = this.category.current;
 179     const category = category_input.value;
 180
 181     /* Prevent the default page-changing form-submission behavior. */
 182     event.preventDefault();
 183
 184     const match = category.match(/[0-9]+/);
 185     if (match === null) {
 186       category_input.setCustomValidity("Category must include a number");
 187       form.reportValidity();
 188       return;
 189     }
 190
 191     fetch_post_json("prompts", {
 192       items: parseInt(match[0], 10),
 193       prompt: category
 194     });
 195
 196     form.reset();
 197   }
 198
 199   render() {
 200     return (
 201       <div className="category-request">
 202         <h2>Submit a Category</h2>
 203         <p>
 204           Suggest a category to play. Don't forget to include the
 205           number of items for each person to submit.
 206         </p>
 207
 208         <form onSubmit={this.handle_submit} >
 209           <div className="form-field large">
 210             <input
 211               type="text"
 212               id="category"
 213               placeholder="6 things at the beach"
 214               required
 215               autoComplete="off"
 216               onChange={this.handle_change}
 217               ref={this.category}
 218             />
 219           </div>
 220
 221           <div className="form-field large">
 222             <button type="submit">
 223               Send
 224             </button>
 225           </div>
 226
 227         </form>
 228       </div>
 229     );
 230   }
 231 }
 232
 233 const PromptOptions = React.memo(props => {
 234
 235   if (props.prompts.length === 0)
 236     return null;
 237
 238   return (
 239     <div className="prompt-options">
 240       <h2>Vote on Categories</h2>
 241       <p>
 242         Select any categories below that you'd like to play.
 243         You can choose as many as you'd like.
 244       </p>
 245       {props.prompts.map(p => {
 246         return (
 247           <button
 248             className="vote-button"
 249             key={p.id}
 250             onClick={() => fetch_post_json(`vote/${p.id}`) }
 251           >
 252             {p.prompt}
 253             <div className="vote-choices">
 254               {p.votes.map(v => {
 255                 return (
 256                   <div
 257                     key={v}
 258                     className="vote-choice"
 259                   >
 260                     {v}
 261                   </div>
 262                 );
 263               })}
 264             </div>
 265           </button>
 266         );
 267       })}
 268     </div>
 269   );
 270 });
 271
 272 const LetsPlay = React.memo(props => {
 273
 274   function handle_click(prompt_id) {
 275     fetch_post_json
 276   }
 277
 278   const quorum = Math.round((props.num_players + 1) / 2);
 279   const max_votes = props.prompts.reduce(
 280     (max_so_far, v) => Math.max(max_so_far, v.votes.length), 0);
 281
 282   if (max_votes < quorum)
 283     return null;
 284
 285   const candidates = props.prompts.filter(p => p.votes.length >= quorum);
 286   const index = Math.floor(Math.random() * candidates.length);
 287   const winner = candidates[index];
 288
 289   return (
 290     <div className="lets-play">
 291       <h2>Let's Play</h2>
 292       <p>
 293         That should be enough voting. If you're not waiting for any
 294         other players to join, then let's start.
 295       </p>
 296       <button
 297         className="lets-play"
 298         onClick={() => fetch_post_json(`start/${winner.id}`) }
 299       >
 300         Start Game
 301       </button>
 302     </div>
 303   );
 304 });
 305
 306 class ActivePrompt extends React.PureComponent {
 307
 308   constructor(props) {
 309     super(props);
 310     const items = props.prompt.items;
 311
 312     this.state = {
 313       submitted: false
 314     };
 315
 316     this.answers = [...Array(items)].map(() => React.createRef());
 317     this.handle_submit = this.handle_submit.bind(this);
 318   }
 319
 320   async handle_submit(event) {
 321     const form = event.currentTarget;
 322
 323     /* Prevent the default page-changing form-submission behavior. */
 324     event.preventDefault();
 325
 326     const response = await fetch_post_json(`answer/${this.props.prompt.id}`, {
 327       answers: this.answers.map(r => r.current.value)
 328     });
 329     if (response.status == 200) {
 330       const result = await response.json();
 331       if (! result.valid) {
 332         add_message("danger", result.message);
 333         return;
 334       }
 335     } else {
 336       add_message("danger", "An error occurred submitting your answers");
 337       return;
 338     }
 339
 340     /* Everything worked. Server is happy with our answers. */
 341     form.reset();
 342     this.setState({
 343         submitted: true
 344     });
 345   }
 346
 347   render() {
 348     if (this.state.submitted)
 349       return (
 350         <div className="please-wait">
 351           <h2>{this.props.players_answered}/
 352             {this.props.players_total} players have responded</h2>
 353           <p>
 354             Please wait for the rest of the players to submit their answers.
 355           </p>
 356         </div>
 357       );
 358
 359     return (
 360       <div className="active-prompt">
 361         <h2>The Game of Empathy</h2>
 362         <p>
 363           Remember, you're trying to match your answers with
 364           what the other players submit.
 365           Give {this.props.prompt.items} answers for the following prompt:
 366         </p>
 367         <h2>{this.props.prompt.prompt}</h2>
 368         <form onSubmit={this.handle_submit}>
 369           {Array(this.props.prompt.items).fill(null).map((whocares,i) => {
 370             return (
 371               <div
 372                 key={i}
 373                 className="form-field large">
 374                 <input
 375                   type="text"
 376                   name={`answer_${i}`}
 377                   required
 378                   autoComplete="off"
 379                   ref={this.answers[i]}
 380                 />
 381               </div>
 382             );
 383           })}
 384
 385           <div
 386             key="submit-button"
 387             className="form-field large">
 388             <button type="submit">
 389               Send
 390             </button>
 391           </div>
 392
 393         </form>
 394       </div>
 395     );
 396   }
 397 }
 398
 399 class Game extends React.PureComponent {
 400   constructor(props) {
 401     super(props);
 402     this.state = {
 403       game_info: {},
 404       player_info: {},
 405       other_players: [],
 406       prompts: [],
 407       active_prompt: null,
 408       players_answered: 0
 409     };
 410   }
 411
 412   set_game_info(info) {
 413     this.setState({
 414       game_info: info
 415     });
 416   }
 417
 418   set_player_info(info) {
 419     this.setState({
 420       player_info: info
 421     });
 422   }
 423
 424   set_other_player_info(info) {
 425     const other_players_copy = [...this.state.other_players];
 426     const idx = other_players_copy.findIndex(o => o.id === info.id);
 427     if (idx >= 0) {
 428       other_players_copy[idx] = info;
 429     } else {
 430       other_players_copy.push(info);
 431     }
 432     this.setState({
 433       other_players: other_players_copy
 434     });
 435   }
 436
 437   set_prompts(prompts) {
 438     this.setState({
 439       prompts: prompts
 440     });
 441   }
 442
 443   add_or_update_prompt(prompt) {
 444     const prompts_copy = [...this.state.prompts];
 445     const idx = prompts_copy.findIndex(p => p.id === prompt.id);
 446     if (idx >= 0) {
 447       prompts_copy[idx] = prompt;
 448     } else {
 449       prompts_copy.push(prompt);
 450     }
 451     this.setState({
 452       prompts: prompts_copy
 453     });
 454   }
 455
 456   set_active_prompt(prompt) {
 457     this.setState({
 458       active_prompt: prompt
 459     });
 460   }
 461
 462   set_players_answered(players_answered) {
 463     this.setState({
 464       players_answered: players_answered
 465     });
 466   }
 467
 468   set_scores(scores) {
 469     this.setState({
 470       scores: scores
 471     });
 472   }
 473
 474   render() {
 475     const state = this.state;
 476     const players_total = 1 + state.other_players.length;
 477
 478     if (state.scores) {
 479       return (
 480         <div className="scores">
 481           <h2>Scores</h2>
 482           <ul>
 483             {state.scores.scores.map(score => {
 484               return (
 485                 <li key={score.player}>
 486                   {score.player}: {score.score}
 487                 </li>
 488               );
 489             })}
 490           </ul>
 491           <h2>Words submitted</h2>
 492           <ul>
 493             {state.scores.words.map(word => {
 494               return (
 495                 <li key={word.word}>
 496                   {word.word}:
 497                   {word.players.map(p => {
 498                     return (
 499                       <span key={p}>{p}{" "}</span>
 500                     );
 501                   })}
 502                 </li>
 503               );
 504             })}
 505           </ul>
 506           <button
 507             className="new-game"
 508             onClick={() => fetch_post_json('reset') }
 509           >
 510             New Game
 511           </button>
 512         </div>
 513       );
 514     }
 515
 516     if (state.active_prompt) {
 517       return <ActivePrompt
 518                prompt={state.active_prompt}
 519                players_answered={state.players_answered}
 520                players_total={players_total}
 521              />;
 522     }
 523
 524     return [
 525       <GameInfo
 526         key="game-info"
 527         id={state.game_info.id}
 528         url={state.game_info.url}
 529       />,
 530       <PlayerInfo
 531         key="player-info"
 532         game={this}
 533         player={state.player_info}
 534         other_players={state.other_players}
 535       />,
 536       <p key="spacer"></p>,
 537       <CategoryRequest
 538         key="category-request"
 539       />,
 540       <PromptOptions
 541         key="prompts"
 542         prompts={state.prompts}
 543       />,
 544       <LetsPlay
 545         key="lets-play"
 546         num_players={1+state.other_players.length}
 547         prompts={state.prompts}
 548       />
 549     ];
 550   }
 551 }
 552
 553 ReactDOM.render(<Game
 554                   ref={(me) => window.game = me}
 555                 />, document.getElementById("empathy"));