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-update", event => {
49 const info = JSON.parse(event.data);
51 if (info.id === window.game.state.player_info.id)
52 window.game.set_player_info(info);
54 window.game.set_other_player_info(info);
57 events.addEventListener("game-state", event => {
58 const state = JSON.parse(event.data);
60 window.game.reset_game_state();
62 window.game.set_prompts(state.prompts);
64 window.game.set_active_prompt(state.active_prompt);
66 window.game.set_scores(state.scores);
68 window.game.set_ambiguities(state.ambiguities);
71 events.addEventListener("prompt", event => {
72 const prompt = JSON.parse(event.data);
74 window.game.add_or_update_prompt(prompt);
77 events.addEventListener("start", event => {
78 const prompt = JSON.parse(event.data);
80 window.game.set_active_prompt(prompt);
83 events.addEventListener("player-answered", event => {
84 const player = JSON.parse(event.data);
86 window.game.set_player_answered(player);
89 events.addEventListener("player-answering", event => {
90 const player = JSON.parse(event.data);
92 window.game.set_player_answering(player);
95 events.addEventListener("vote-end-answers", event => {
96 const player = JSON.parse(event.data);
98 window.game.set_player_vote_end_answers(player);
101 events.addEventListener("unvote-end-answers", event => {
102 const player = JSON.parse(event.data);
104 window.game.set_player_unvote_end_answers(player);
107 events.addEventListener("ambiguities", event => {
108 const ambiguities = JSON.parse(event.data);
110 window.game.set_ambiguities(ambiguities);
113 events.addEventListener("player-judged", event => {
114 const player = JSON.parse(event.data);
116 window.game.set_player_judged(player);
119 events.addEventListener("player-judging", event => {
120 const player = JSON.parse(event.data);
122 window.game.set_player_judging(player);
125 events.addEventListener("vote-end-judging", event => {
126 const player = JSON.parse(event.data);
128 window.game.set_player_vote_end_judging(player);
131 events.addEventListener("unvote-end-judging", event => {
132 const player = JSON.parse(event.data);
134 window.game.set_player_unvote_end_judging(player);
137 events.addEventListener("scores", event => {
138 const scores = JSON.parse(event.data);
140 window.game.set_scores(scores);
143 /*********************************************************
144 * Game and supporting classes *
145 *********************************************************/
147 function copy_to_clipboard(id)
149 const tmp = document.createElement("input");
150 tmp.setAttribute("value", document.getElementById(id).innerHTML);
151 document.body.appendChild(tmp);
153 document.execCommand("copy");
154 document.body.removeChild(tmp);
157 const GameInfo = React.memo(props => {
162 <div className="game-info">
163 <span className="game-id">{props.id}</span>
165 Share this link to invite friends:{" "}
166 <span id="game-share-url">{props.url}</span>
170 onClick={() => copy_to_clipboard('game-share-url')}
176 const PlayerInfo = React.memo(props => {
177 if (! props.player.id)
181 <div className="player-info">
182 <span className="players-header">Players: </span>
184 {props.player.score > 0 ? ` (${props.player.score})` : ""}
185 {props.other_players.map(other => (
186 <span key={other.id}>
189 {other.score > 0 ? ` (${other.score})` : ""}
196 function fetch_method_json(method, api = '', data = {}) {
197 const response = fetch(api, {
200 'Content-Type': 'application/json'
202 body: JSON.stringify(data)
207 function fetch_post_json(api = '', data = {}) {
208 return fetch_method_json('POST', api, data);
211 async function fetch_put_json(api = '', data = {}) {
212 return fetch_method_json('PUT', api, data);
215 class CategoryRequest extends React.PureComponent {
218 this.category = React.createRef();
220 this.handle_change = this.handle_change.bind(this);
221 this.handle_submit = this.handle_submit.bind(this);
224 handle_change(event) {
225 const category_input = this.category.current;
226 const category = category_input.value;
228 const match = category.match(/[0-9]+/);
230 const num_items = parseInt(match[0], 10);
231 if (num_items <= MAX_PROMPT_ITEMS)
232 category_input.setCustomValidity("");
236 async handle_submit(event) {
237 const form = event.currentTarget;
238 const category_input = this.category.current;
239 const category = category_input.value;
241 /* Prevent the default page-changing form-submission behavior. */
242 event.preventDefault();
244 const match = category.match(/[0-9]+/);
245 if (match === null) {
246 category_input.setCustomValidity("Category must include a number");
247 form.reportValidity();
251 const num_items = parseInt(match[0], 10);
253 if (num_items > MAX_PROMPT_ITEMS) {
254 category_input.setCustomValidity(`Maximum number of items is ${MAX_PROMPT_ITEMS}`);
255 form.reportValidity();
259 const response = await fetch_post_json("prompts", {
264 if (response.status === 200) {
265 const result = await response.json();
266 if (! result.valid) {
267 add_message("danger", result.message);
271 add_message("danger", "An error occurred submitting your category");
279 <div className="category-request">
280 <h2>Submit a Category</h2>
282 Suggest a category to play. Don't forget to include the
283 number of items for each person to submit.
286 <form onSubmit={this.handle_submit} >
287 <div className="form-field large">
291 placeholder="6 things at the beach"
294 onChange={this.handle_change}
299 <div className="form-field large">
300 <button type="submit">
311 const PromptOptions = React.memo(props => {
313 if (props.prompts.length === 0)
317 <div className="prompt-options">
318 <h2>Vote on Categories</h2>
320 Select any categories below that you'd like to play.
321 You can choose as many as you'd like.
323 {props.prompts.map(p => {
326 className="vote-button"
328 onClick={() => fetch_post_json(`vote/${p.id}`) }
331 <div className="vote-choices">
336 className="vote-choice"
350 const LetsPlay = React.memo(props => {
352 const quorum = Math.round((props.num_players + 1) / 2);
353 const max_votes = props.prompts.reduce(
354 (max_so_far, v) => Math.max(max_so_far, v.votes.length), 0);
356 if (max_votes < quorum)
359 const candidates = props.prompts.filter(p => p.votes.length >= quorum);
360 const index = Math.floor(Math.random() * candidates.length);
361 const winner = candidates[index];
364 <div className="lets-play">
367 That should be enough voting. If you're not waiting for any
368 other players to join, then let's start.
371 className="lets-play"
372 onClick={() => fetch_post_json(`start/${winner.id}`) }
380 class Ambiguities extends React.PureComponent {
385 const word_sets = props.words.map(word => {
386 const set = new Set();
392 word_sets: word_sets,
397 this.judging_sent_recently = false;
400 async handle_submit() {
401 const response = await fetch_post_json(
402 `judged/${this.props.prompt.id}`,{
403 word_groups: this.state.word_sets.map(set => Array.from(set))
407 if (response.status === 200) {
408 const result = await response.json();
409 if (! result.valid) {
410 add_message("danger", result.message);
414 add_message("danger", "An error occurred submitting the results of your judging");
425 /* Let the server know we are doing some judging, (but rate limit
426 * this so we don't send a "judging" notification more frquently
429 if (! this.judging_sent_recently) {
430 fetch_post_json(`judging/${this.props.prompt.id}`);
431 this.judging_sent_recently = true;
432 setTimeout(() => { this.judging_sent_recently = false; }, 1000);
435 if (this.state.selected == word) {
436 /* Second click on same word removes the word from the group. */
437 const idx = this.state.word_sets.findIndex(s => s.has(word));
438 const set = this.state.word_sets[idx];
439 if (set.size === 1) {
440 /* When the word is already alone, there's nothing to do but
441 * to un-select it. */
448 const new_set = new Set([...set].filter(w => w !== word));
451 word_sets: [...this.state.word_sets.slice(0, idx),
454 ...this.state.word_sets.slice(idx+1)]
456 } else if (this.state.selected) {
457 /* Click of a second word groups the two together. */
458 const idx1 = this.state.word_sets.findIndex(s => s.has(this.state.selected));
459 const idx2 = this.state.word_sets.findIndex(s => s.has(word));
460 const set1 = this.state.word_sets[idx1];
461 const set2 = this.state.word_sets[idx2];
462 const new_set = new Set([...set2, ...set1]);
466 word_sets: [...this.state.word_sets.slice(0, idx1),
467 ...this.state.word_sets.slice(idx1 + 1, idx2),
469 ...this.state.word_sets.slice(idx2 + 1)]
474 word_sets: [...this.state.word_sets.slice(0, idx2),
476 ...this.state.word_sets.slice(idx2 + 1, idx1),
477 ...this.state.word_sets.slice(idx1 + 1)]
481 /* First click of a word selects it. */
489 if (this.state.submitted)
491 <div className="please-wait">
492 <h2>Submission received</h2>
494 The following players have completed judging:
495 {[...this.props.players_judged].join(', ')}
498 Still waiting for the following players:
501 {Object.keys(this.props.players_judging).map(player => {
507 {this.props.players_judging[player] ?
508 <span className="typing"/> : null }
514 className="vote-button"
515 onClick={() => fetch_post_json(`end-judging/${this.props.prompt.id}`) }
518 <div className="vote-choices">
519 {[...this.props.votes].map(v => {
523 className="vote-choice"
535 const btn_class = "ambiguity-button";
536 const btn_selected_class = btn_class + " selected";
539 <div className="ambiguities">
540 <h2>Judging Answers</h2>
542 Click on each pair of answers that should be scored as equivalent,
543 (and click any word twice to split it out from a group). Remember,
544 what goes around comes around, so it's best to be generous when
547 {this.state.word_sets.map(set => {
550 className="ambiguity-group"
551 key={Array.from(set)[0]}
553 {Array.from(set).map(word => {
556 className={this.state.selected === word ?
557 btn_selected_class : btn_class }
559 onClick={() => this.handle_click(word)}
569 Click here when done judging:<br/>
571 onClick={() => this.handle_submit()}
581 class ActivePrompt extends React.PureComponent {
585 const items = props.prompt.items;
591 this.answers = [...Array(items)].map(() => React.createRef());
592 this.answering_sent_recently = false;
594 this.handle_submit = this.handle_submit.bind(this);
595 this.handle_change = this.handle_change.bind(this);
598 handle_change(event) {
599 /* We don't care (or even look) at what the player is typing at
600 * this point. We simply want to be informed that the player _is_
601 * typing so that we can tell the server (which will tell other
602 * players) that there is activity here.
605 /* Rate limit so that we don't send an "answering" notification
606 * more frequently than necessary.
608 if (! this.answering_sent_recently) {
609 fetch_post_json(`answering/${this.props.prompt.id}`);
610 this.answering_sent_recently = true;
611 setTimeout(() => { this.answering_sent_recently = false; }, 1000);
615 async handle_submit(event) {
616 const form = event.currentTarget;
618 /* Prevent the default page-changing form-submission behavior. */
619 event.preventDefault();
621 const response = await fetch_post_json(`answer/${this.props.prompt.id}`, {
622 answers: this.answers.map(r => r.current.value)
624 if (response.status === 200) {
625 const result = await response.json();
626 if (! result.valid) {
627 add_message("danger", result.message);
631 add_message("danger", "An error occurred submitting your answers");
635 /* Everything worked. Server is happy with our answers. */
643 if (this.state.submitted)
645 <div className="please-wait">
646 <h2>Submission received</h2>
648 The following players have submitted their answers:
649 {[...this.props.players_answered].join(', ')}
652 Still waiting for the following players:
655 {Object.keys(this.props.players_answering).map(player => {
661 {this.props.players_answering[player] ?
662 <span className="typing"/> : null }
668 className="vote-button"
669 onClick={() => fetch_post_json(`end-answers/${this.props.prompt.id}`) }
672 <div className="vote-choices">
673 {[...this.props.votes].map(v => {
677 className="vote-choice"
690 <div className="active-prompt">
691 <h2>The Game of Empathy</h2>
693 Remember, you're trying to match your answers with
694 what the other players submit.
695 Give {this.props.prompt.items} answers for the following prompt:
697 <h2>{this.props.prompt.prompt}</h2>
698 <form onSubmit={this.handle_submit}>
699 {[...Array(this.props.prompt.items)].map((whocares,i) => {
703 className="form-field large">
709 onChange={this.handle_change}
710 ref={this.answers[i]}
718 className="form-field large">
719 <button type="submit">
730 class Game extends React.PureComponent {
739 players_answered: new Set(),
740 players_answering: {},
741 end_answers_votes: new Set(),
743 players_judged: new Set(),
745 end_judging_votes: new Set(),
750 set_game_info(info) {
756 set_player_info(info) {
762 set_other_player_info(info) {
763 const other_players_copy = [...this.state.other_players];
764 const idx = other_players_copy.findIndex(o => o.id === info.id);
766 other_players_copy[idx] = info;
768 other_players_copy.push(info);
771 other_players: other_players_copy
779 players_answered: new Set(),
780 players_answering: {},
781 end_answers_votes: new Set(),
783 players_judged: new Set(),
785 end_judging_votes: new Set(),
790 set_prompts(prompts) {
796 add_or_update_prompt(prompt) {
797 const prompts_copy = [...this.state.prompts];
798 const idx = prompts_copy.findIndex(p => p.id === prompt.id);
800 prompts_copy[idx] = prompt;
802 prompts_copy.push(prompt);
805 prompts: prompts_copy
809 set_active_prompt(prompt) {
811 active_prompt: prompt
815 set_player_answered(player) {
816 const new_players_answering = {...this.state.players_answering};
817 delete new_players_answering[player];
820 players_answered: new Set([...this.state.players_answered, player]),
821 players_answering: new_players_answering
825 set_player_answering(player) {
828 ...this.state.players_answering,
829 [player]: {active: true}
834 set_player_vote_end_answers(player) {
836 end_answers_votes: new Set([...this.state.end_answers_votes, player])
840 set_player_unvote_end_answers(player) {
842 end_answers_votes: new Set([...this.state.end_answers_votes].filter(p => p !== player))
846 set_ambiguities(ambiguities) {
848 ambiguities: ambiguities
852 set_player_judged(player) {
853 const new_players_judging = {...this.state.players_judging};
854 delete new_players_judging[player];
857 players_judged: new Set([...this.state.players_judged, player]),
858 players_judging: new_players_judging
862 set_player_judging(player) {
865 ...this.state.players_judging,
866 [player]: {active: true}
872 set_player_vote_end_judging(player) {
874 end_judging_votes: new Set([...this.state.end_judging_votes, player])
878 set_player_unvote_end_judging(player) {
880 end_judging_votes: new Set([...this.state.end_judging_votes].filter(p => p !== player))
891 const state = this.state;
892 const players_total = 1 + state.other_players.length;
896 <div className="scores">
899 {state.scores.scores.map(score => {
901 <li key={score.player}>
902 {score.player}: {score.score}
907 <h2>Words submitted</h2>
909 {state.scores.words.map(word => {
912 {`${word.word}: ${word.players.join(', ')}`}
919 onClick={() => fetch_post_json('reset') }
927 if (state.ambiguities){
929 prompt={state.active_prompt}
930 words={state.ambiguities}
931 players_judged={state.players_judged}
932 players_judging={state.players_judging}
933 votes={state.end_judging_votes}
937 if (state.active_prompt) {
939 prompt={state.active_prompt}
940 players_answered={state.players_answered}
941 players_answering={state.players_answering}
942 votes={state.end_answers_votes}
949 id={state.game_info.id}
950 url={state.game_info.url}
955 player={state.player_info}
956 other_players={state.other_players}
958 <p key="spacer"></p>,
960 key="category-request"
964 prompts={state.prompts}
968 num_players={1+state.other_players.length}
969 prompts={state.prompts}
975 ReactDOM.render(<Game
976 ref={(me) => window.game = me}
977 />, document.getElementById("empathy"));