1 const MAX_PROMPT_ITEMS = 20;
3 function undisplay(element) {
4 element.style.display="none";
7 function add_message(severity, message) {
8 message = `<div class="message ${severity}" onclick="undisplay(this)">
9 <span class="hide-button" onclick="undisplay(this.parentElement)">×</span>
12 const message_area = document.getElementById('message-area');
13 message_area.insertAdjacentHTML('beforeend', message);
16 /*********************************************************
17 * Handling server-sent event stream *
18 *********************************************************/
20 const events = new EventSource("events");
22 events.onerror = function(event) {
23 if (event.target.readyState === EventSource.CLOSED) {
25 add_message("danger", "Connection to server lost.");
30 events.addEventListener("game-info", event => {
31 const info = JSON.parse(event.data);
33 window.game.set_game_info(info);
36 events.addEventListener("player-info", event => {
37 const info = JSON.parse(event.data);
39 window.game.set_player_info(info);
42 events.addEventListener("player-enter", event => {
43 const info = JSON.parse(event.data);
45 window.game.set_other_player_info(info);
48 events.addEventListener("player-exit", event => {
49 const info = JSON.parse(event.data);
51 window.game.remove_player(info);
54 events.addEventListener("player-update", event => {
55 const info = JSON.parse(event.data);
57 if (info.id === window.game.state.player_info.id)
58 window.game.set_player_info(info);
60 window.game.set_other_player_info(info);
63 events.addEventListener("game-state", event => {
64 const state = JSON.parse(event.data);
66 window.game.reset_game_state();
68 window.game.set_prompts(state.prompts);
70 window.game.set_active_prompt(state.active_prompt);
72 window.game.set_players_answered(state.players_answered);
74 window.game.set_players_answering(state.players_answering);
76 window.game.set_answering_idle(state.answering_idle);
78 window.game.set_end_answers(state.end_answers);
80 window.game.set_ambiguities(state.ambiguities);
82 window.game.set_players_judged(state.players_judged);
84 window.game.set_players_judging(state.players_judging);
86 window.game.set_judging_idle(state.judging_idle);
88 window.game.set_end_judging(state.end_judging);
90 window.game.set_scores(state.scores);
92 window.game.set_new_game_votes(state.new_game_votes);
94 window.game.state_ready();
97 events.addEventListener("prompt", event => {
98 const prompt = JSON.parse(event.data);
100 window.game.add_or_update_prompt(prompt);
103 events.addEventListener("start", event => {
104 const prompt = JSON.parse(event.data);
106 window.game.set_active_prompt(prompt);
109 events.addEventListener("player-answered", event => {
110 const player = JSON.parse(event.data);
112 window.game.set_player_answered(player);
115 events.addEventListener("player-answering", event => {
116 const player = JSON.parse(event.data);
118 window.game.set_player_answering(player);
121 events.addEventListener("answering-idle", event => {
122 const value = JSON.parse(event.data);
124 window.game.set_answering_idle(value);
127 events.addEventListener("vote-end-answers", event => {
128 const player = JSON.parse(event.data);
130 window.game.set_player_vote_end_answers(player);
133 events.addEventListener("unvote-end-answers", event => {
134 const player = JSON.parse(event.data);
136 window.game.set_player_unvote_end_answers(player);
139 events.addEventListener("ambiguities", event => {
140 const ambiguities = JSON.parse(event.data);
142 window.game.set_ambiguities(ambiguities);
145 events.addEventListener("player-judged", event => {
146 const player = JSON.parse(event.data);
148 window.game.set_player_judged(player);
151 events.addEventListener("player-judging", event => {
152 const player = JSON.parse(event.data);
154 window.game.set_player_judging(player);
157 events.addEventListener("judging-idle", event => {
158 const value = JSON.parse(event.data);
160 window.game.set_judging_idle(value);
163 events.addEventListener("vote-end-judging", event => {
164 const player = JSON.parse(event.data);
166 window.game.set_player_vote_end_judging(player);
169 events.addEventListener("unvote-end-judging", event => {
170 const player = JSON.parse(event.data);
172 window.game.set_player_unvote_end_judging(player);
175 events.addEventListener("scores", event => {
176 const scores = JSON.parse(event.data);
178 window.game.set_scores(scores);
181 events.addEventListener("vote-new-game", event => {
182 const player = JSON.parse(event.data);
184 window.game.set_player_vote_new_game(player);
187 events.addEventListener("unvote-new-game", event => {
188 const player = JSON.parse(event.data);
190 window.game.set_player_unvote_new_game(player);
193 /*********************************************************
194 * Game and supporting classes *
195 *********************************************************/
197 function copy_to_clipboard(id)
199 const tmp = document.createElement("input");
200 tmp.setAttribute("value", document.getElementById(id).innerHTML);
201 document.body.appendChild(tmp);
203 document.execCommand("copy");
204 document.body.removeChild(tmp);
207 const GameInfo = React.memo(props => {
212 <div className="game-info">
213 <span className="game-id">{props.id}</span>
215 Share this link to invite friends:{" "}
216 <span id="game-share-url">{props.url}</span>
220 onClick={() => copy_to_clipboard('game-share-url')}
226 const PlayerInfo = React.memo(props => {
227 if (! props.player.id)
230 const all_players = [props.player, ...props.other_players];
232 const sorted_players = all_players.sort((a,b) => {
233 return b.score - a.score;
236 const names_and_scores = sorted_players.map(player => {
238 return `${player.name} (${player.score})`;
244 <div className="player-info">
245 <span className="players-header">Players: </span>
246 <span>{names_and_scores}</span>
251 function fetch_method_json(method, api = '', data = {}) {
252 const response = fetch(api, {
255 'Content-Type': 'application/json'
257 body: JSON.stringify(data)
262 function fetch_post_json(api = '', data = {}) {
263 return fetch_method_json('POST', api, data);
266 async function fetch_put_json(api = '', data = {}) {
267 return fetch_method_json('PUT', api, data);
270 class CategoryRequest extends React.PureComponent {
273 this.category = React.createRef();
275 this.handle_change = this.handle_change.bind(this);
276 this.handle_submit = this.handle_submit.bind(this);
279 handle_change(event) {
280 const category_input = this.category.current;
281 const category = category_input.value;
283 const match = category.match(/[0-9]+/);
285 const num_items = parseInt(match[0], 10);
286 if (num_items <= MAX_PROMPT_ITEMS)
287 category_input.setCustomValidity("");
291 async handle_submit(event) {
292 const form = event.currentTarget;
293 const category_input = this.category.current;
294 const category = category_input.value;
296 /* Prevent the default page-changing form-submission behavior. */
297 event.preventDefault();
299 const match = category.match(/[0-9]+/);
300 if (match === null) {
301 category_input.setCustomValidity("Category must include a number");
302 form.reportValidity();
306 const num_items = parseInt(match[0], 10);
308 if (num_items > MAX_PROMPT_ITEMS) {
309 category_input.setCustomValidity(`Maximum number of items is ${MAX_PROMPT_ITEMS}`);
310 form.reportValidity();
314 const response = await fetch_post_json("prompts", {
319 if (response.status === 200) {
320 const result = await response.json();
321 if (! result.valid) {
322 add_message("danger", result.message);
326 add_message("danger", "An error occurred submitting your category");
334 <div className="category-request">
335 <h2>Submit a Category</h2>
337 Suggest a category to play. Don't forget to include the
338 number of items for each person to submit.
341 <form onSubmit={this.handle_submit} >
342 <div className="form-field large">
346 placeholder="6 things at the beach"
349 onChange={this.handle_change}
354 <div className="form-field large">
355 <button type="submit">
366 const PromptOption = React.memo(props => {
368 const prompt = props.prompt;
369 const [show_prompt, set_show_prompt] = React.useState(true);
374 if (prompt.votes_against.find(v => v === props.player.name))
379 className="vote-button"
381 onClick={() => fetch_post_json(`vote/${prompt.id}`) }
384 className="hide-button"
385 onClick={(event) => {
386 event.stopPropagation();
387 fetch_post_json(`vote_against/${prompt.id}`);
388 set_show_prompt(false);
394 <div className="vote-choices">
395 {prompt.votes.map(v => {
399 className="vote-choice"
410 const PromptOptions = React.memo(props => {
412 if (props.prompts.length === 0)
416 <div className="prompt-options">
417 <h2>Vote on Categories</h2>
419 Select any categories below that you'd like to play.
420 You can choose as many as you'd like.
422 {props.prompts.map(p => <PromptOption prompt={p} player={props.player} />)}
427 const LetsPlay = React.memo(props => {
429 const quorum = Math.round((props.num_players + 1) / 2);
430 const max_votes = props.prompts.reduce(
431 (max_so_far, v) => Math.max(max_so_far, v.votes.length), 0);
433 if (max_votes < quorum)
436 const candidates = props.prompts.filter(p => p.votes.length >= quorum);
437 const index = Math.floor(Math.random() * candidates.length);
438 const winner = candidates[index];
441 <div className="lets-play">
444 That should be enough voting. If you're not waiting for any
445 other players to join, then let's start.
448 className="lets-play"
449 onClick={() => fetch_post_json(`start/${winner.id}`) }
457 class Ambiguities extends React.PureComponent {
462 const word_sets = props.words.map(word => {
463 const set = new Set();
469 word_sets: word_sets,
473 this.submitted = false;
474 this.judging_sent_recently = false;
477 async handle_submit() {
479 /* Don't submit a second time. */
483 const response = await fetch_post_json(
484 `judged/${this.props.prompt.id}`,{
485 word_groups: this.state.word_sets.map(set => Array.from(set))
489 if (response.status === 200) {
490 const result = await response.json();
491 if (! result.valid) {
492 add_message("danger", result.message);
496 add_message("danger", "An error occurred submitting the results of your judging");
500 this.submitted = true;
505 /* Let the server know we are doing some judging, (but rate limit
506 * this so we don't send a "judging" notification more frquently
509 if (! this.judging_sent_recently) {
510 fetch_post_json(`judging/${this.props.prompt.id}`);
511 this.judging_sent_recently = true;
512 setTimeout(() => { this.judging_sent_recently = false; }, 1000);
515 if (this.state.selected == word) {
516 /* Second click on same word removes the word from the group. */
517 const idx = this.state.word_sets.findIndex(s => s.has(word));
518 const set = this.state.word_sets[idx];
519 if (set.size === 1) {
520 /* When the word is already alone, there's nothing to do but
521 * to un-select it. */
528 const new_set = new Set([...set].filter(w => w !== word));
531 word_sets: [...this.state.word_sets.slice(0, idx),
534 ...this.state.word_sets.slice(idx+1)]
536 } else if (this.state.selected) {
537 /* Click of a second word groups the two together. */
538 const idx1 = this.state.word_sets.findIndex(s => s.has(this.state.selected));
539 const idx2 = this.state.word_sets.findIndex(s => s.has(word));
540 const set1 = this.state.word_sets[idx1];
541 const set2 = this.state.word_sets[idx2];
542 const new_set = new Set([...set2, ...set1]);
546 word_sets: [...this.state.word_sets.slice(0, idx1),
547 ...this.state.word_sets.slice(idx1 + 1, idx2),
549 ...this.state.word_sets.slice(idx2 + 1)]
554 word_sets: [...this.state.word_sets.slice(0, idx2),
556 ...this.state.word_sets.slice(idx2 + 1, idx1),
557 ...this.state.word_sets.slice(idx1 + 1)]
561 /* First click of a word selects it. */
569 let move_on_button = null;
571 if (this.props.idle) {
574 className="vote-button"
575 onClick={() => fetch_post_json(`end-judging/${this.props.prompt.id}`) }
578 <div className="vote-choices">
579 {[...this.props.votes].map(v => {
583 className="vote-choice"
594 let still_waiting = null;
595 const judging_players = Object.keys(this.props.players_judging);
596 if (judging_players.length) {
600 Still waiting for the following player
601 {judging_players.length > 1 ? 's' : '' }
605 {judging_players.map(player => {
612 {this.props.players_judging[player].active ?
616 <span>{'.'}</span><span>{'.'}</span><span>{'.'}</span>
626 if (this.props.players_judged.has(this.props.player.name)) {
628 <div className="please-wait">
629 <h2>Submission received</h2>
631 The following players have completed judging:{' '}
632 {[...this.props.players_judged].join(', ')}
641 const btn_class = "ambiguity-button";
642 const btn_selected_class = btn_class + " selected";
645 <div className="ambiguities">
646 <h2>Judging Answers</h2>
648 Click on each pair of answers that should be scored as equivalent,
649 (and click any word twice to split it out from a group). Remember,
650 what goes around comes around, so it's best to be generous when
653 <h2>{this.props.prompt.prompt}</h2>
654 {this.state.word_sets.map(set => {
657 className="ambiguity-group"
658 key={Array.from(set)[0]}
660 {Array.from(set).map(word => {
663 className={this.state.selected === word ?
664 btn_selected_class : btn_class }
666 onClick={() => this.handle_click(word)}
676 Click here when done judging:<br/>
678 onClick={() => this.handle_submit()}
688 class ActivePrompt extends React.PureComponent {
692 const items = props.prompt.items;
694 this.submitted = false;
696 this.answers = [...Array(items)].map(() => React.createRef());
697 this.answering_sent_recently = false;
699 this.handle_submit = this.handle_submit.bind(this);
700 this.handle_change = this.handle_change.bind(this);
703 handle_change(event) {
704 /* We don't care (or even look) at what the player is typing at
705 * this point. We simply want to be informed that the player _is_
706 * typing so that we can tell the server (which will tell other
707 * players) that there is activity here.
710 /* Rate limit so that we don't send an "answering" notification
711 * more frequently than necessary.
713 if (! this.answering_sent_recently) {
714 fetch_post_json(`answering/${this.props.prompt.id}`);
715 this.answering_sent_recently = true;
716 setTimeout(() => { this.answering_sent_recently = false; }, 1000);
720 async handle_submit(event) {
721 const form = event.currentTarget;
723 /* Prevent the default page-changing form-submission behavior. */
724 event.preventDefault();
726 /* And don't submit a second time. */
730 const response = await fetch_post_json(`answer/${this.props.prompt.id}`, {
731 answers: this.answers.map(r => r.current.value)
733 if (response.status === 200) {
734 const result = await response.json();
735 if (! result.valid) {
736 add_message("danger", result.message);
740 add_message("danger", "An error occurred submitting your answers");
744 /* Everything worked. Server is happy with our answers. */
746 this.submitted = true;
750 let move_on_button = null;
751 if (this.props.idle) {
754 className="vote-button"
755 onClick={() => fetch_post_json(`end-answers/${this.props.prompt.id}`) }
758 <div className="vote-choices">
759 {[...this.props.votes].map(v => {
763 className="vote-choice"
774 let still_waiting = null;
775 const answering_players = Object.keys(this.props.players_answering);;
776 if (answering_players.length) {
780 Still waiting for the following player
781 {answering_players.length > 1 ? 's' : ''}
785 {answering_players.map(player => {
792 {this.props.players_answering[player].active ?
796 <span>{'.'}</span><span>{'.'}</span><span>{'.'}</span>
806 if (this.props.players_answered.has(this.props.player.name)) {
808 <div className="please-wait">
809 <h2>Submission received</h2>
811 The following players have submitted their answers:{' '}
812 {[...this.props.players_answered].join(', ')}
822 <div className="active-prompt">
823 <h2>The Game of Empathy</h2>
825 Remember, you're trying to match your answers with
826 what the other players submit.
827 Give {this.props.prompt.items} answer
828 {this.props.prompt.items > 1 ? 's' : ''} for the following prompt:
830 <h2>{this.props.prompt.prompt}</h2>
831 <form onSubmit={this.handle_submit}>
832 {[...Array(this.props.prompt.items)].map((whocares,i) => {
836 className="form-field large">
842 onChange={this.handle_change}
843 ref={this.answers[i]}
851 className="form-field large">
852 <button type="submit">
863 class Game extends React.PureComponent {
872 players_answered: new Set(),
873 players_answering: {},
874 answering_idle: false,
875 end_answers_votes: new Set(),
877 players_judged: new Set(),
880 end_judging_votes: new Set(),
882 new_game_votes: new Set(),
887 set_game_info(info) {
893 set_player_info(info) {
899 set_other_player_info(info) {
900 const other_players_copy = [...this.state.other_players];
901 const idx = other_players_copy.findIndex(o => o.id === info.id);
903 other_players_copy[idx] = info;
905 other_players_copy.push(info);
908 other_players: other_players_copy
912 remove_player(info) {
914 other_players: this.state.other_players.filter(o => o.id !== info.id)
922 players_answered: new Set(),
923 players_answering: {},
924 answering_idle: false,
925 end_answers_votes: new Set(),
927 players_judged: new Set(),
930 end_judging_votes: new Set(),
932 new_game_votes: new Set(),
937 set_prompts(prompts) {
943 add_or_update_prompt(prompt) {
944 const prompts_copy = [...this.state.prompts];
945 const idx = prompts_copy.findIndex(p => p.id === prompt.id);
947 prompts_copy[idx] = prompt;
949 prompts_copy.push(prompt);
952 prompts: prompts_copy
956 set_active_prompt(prompt) {
958 active_prompt: prompt
962 set_players_answered(players) {
964 players_answered: new Set(players)
968 set_player_answered(player) {
969 const new_players_answering = {...this.state.players_answering};
970 delete new_players_answering[player];
973 players_answered: new Set([...this.state.players_answered, player]),
974 players_answering: new_players_answering
978 set_players_answering(players) {
979 const players_answering = {};
980 for (let player of players) {
981 players_answering[player] = {active: false};
984 players_answering: players_answering
988 set_player_answering(player) {
989 /* Set the player as actively answering now. */
992 ...this.state.players_answering,
993 [player]: {active: true}
996 /* And arrange to have them marked idle very shortly.
998 * Note: This timeout is intentionally very, very short. We only
999 * need it long enough that the browser has latched onto the state
1000 * change to "active" above. We actually use a CSS transition
1001 * delay to control the user-perceptible length of time after
1002 * which an active player appears inactive.
1006 players_answering: {
1007 ...this.state.players_answering,
1008 [player]: {active: false}
1014 set_answering_idle(value) {
1016 answering_idle: value
1020 set_end_answers(players) {
1022 end_answers_votes: new Set(players)
1026 set_player_vote_end_answers(player) {
1028 end_answers_votes: new Set([...this.state.end_answers_votes, player])
1032 set_player_unvote_end_answers(player) {
1034 end_answers_votes: new Set([...this.state.end_answers_votes].filter(p => p !== player))
1038 set_ambiguities(ambiguities) {
1040 ambiguities: ambiguities
1044 set_players_judged(players) {
1046 players_judged: new Set(players)
1050 set_player_judged(player) {
1051 const new_players_judging = {...this.state.players_judging};
1052 delete new_players_judging[player];
1055 players_judged: new Set([...this.state.players_judged, player]),
1056 players_judging: new_players_judging
1060 set_players_judging(players) {
1061 const players_judging = {};
1062 for (let player of players) {
1063 players_judging[player] = {active: false};
1066 players_judging: players_judging
1070 set_player_judging(player) {
1071 /* Set the player as actively judging now. */
1074 ...this.state.players_judging,
1075 [player]: {active: true}
1078 /* And arrange to have them marked idle very shortly.
1080 * Note: This timeout is intentionally very, very short. We only
1081 * need it long enough that the browser has latched onto the state
1082 * change to "active" above. We actually use a CSS transition
1083 * delay to control the user-perceptible length of time after
1084 * which an active player appears inactive.
1089 ...this.state.players_judging,
1090 [player]: {active: false}
1097 set_judging_idle(value) {
1103 set_end_judging(players) {
1105 end_judging_votes: new Set(players)
1109 set_player_vote_end_judging(player) {
1111 end_judging_votes: new Set([...this.state.end_judging_votes, player])
1115 set_player_unvote_end_judging(player) {
1117 end_judging_votes: new Set([...this.state.end_judging_votes].filter(p => p !== player))
1121 set_scores(scores) {
1127 set_new_game_votes(players) {
1129 new_game_votes: new Set(players)
1133 set_player_vote_new_game(player) {
1135 new_game_votes: new Set([...this.state.new_game_votes, player])
1139 set_player_unvote_new_game(player) {
1141 new_game_votes: new Set([...this.state.new_game_votes].filter(p => p !== player))
1152 const state = this.state;
1153 const players_total = 1 + state.other_players.length;
1157 <div className="scores">
1158 <h2>{state.active_prompt.prompt}</h2>
1161 {state.scores.scores.map(score => {
1163 <li key={score.player}>
1164 {score.players.join("/")}: {score.score}
1169 <h2>Words submitted</h2>
1171 {state.scores.words.map(word => {
1173 <li key={word.word}>
1174 {word.word} ({word.players.length}): {word.players.join(', ')}
1180 className="vote-button"
1181 onClick={() => fetch_post_json(`new-game/${state.active_prompt.id}`) }
1184 <div className="vote-choices">
1185 {[...state.new_game_votes].map(v => {
1189 className="vote-choice"
1201 if (state.ambiguities){
1203 prompt={state.active_prompt}
1204 words={state.ambiguities}
1205 player={state.player_info}
1206 players_judged={state.players_judged}
1207 players_judging={state.players_judging}
1208 idle={state.judging_idle}
1209 votes={state.end_judging_votes}
1213 if (state.active_prompt) {
1214 return <ActivePrompt
1215 prompt={state.active_prompt}
1216 player={state.player_info}
1217 players_answered={state.players_answered}
1218 players_answering={state.players_answering}
1219 idle={state.answering_idle}
1220 votes={state.end_answers_votes}
1230 id={state.game_info.id}
1231 url={state.game_info.url}
1236 player={state.player_info}
1237 other_players={state.other_players}
1239 <p key="spacer"></p>,
1241 key="category-request"
1245 prompts={state.prompts}
1246 player={state.player_info}
1250 num_players={1+state.other_players.length}
1251 prompts={state.prompts}
1257 ReactDOM.render(<Game
1258 ref={(me) => window.game = me}
1259 />, document.getElementById("empathy"));