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.state_ready();
95 events.addEventListener("prompt", event => {
96 const prompt = JSON.parse(event.data);
98 window.game.add_or_update_prompt(prompt);
101 events.addEventListener("start", event => {
102 const prompt = JSON.parse(event.data);
104 window.game.set_active_prompt(prompt);
107 events.addEventListener("player-answered", event => {
108 const player = JSON.parse(event.data);
110 window.game.set_player_answered(player);
113 events.addEventListener("player-answering", event => {
114 const player = JSON.parse(event.data);
116 window.game.set_player_answering(player);
119 events.addEventListener("answering-idle", event => {
120 const value = JSON.parse(event.data);
122 window.game.set_answering_idle(value);
125 events.addEventListener("vote-end-answers", event => {
126 const player = JSON.parse(event.data);
128 window.game.set_player_vote_end_answers(player);
131 events.addEventListener("unvote-end-answers", event => {
132 const player = JSON.parse(event.data);
134 window.game.set_player_unvote_end_answers(player);
137 events.addEventListener("ambiguities", event => {
138 const ambiguities = JSON.parse(event.data);
140 window.game.set_ambiguities(ambiguities);
143 events.addEventListener("player-judged", event => {
144 const player = JSON.parse(event.data);
146 window.game.set_player_judged(player);
149 events.addEventListener("player-judging", event => {
150 const player = JSON.parse(event.data);
152 window.game.set_player_judging(player);
155 events.addEventListener("judging-idle", event => {
156 const value = JSON.parse(event.data);
158 window.game.set_judging_idle(value);
161 events.addEventListener("vote-end-judging", event => {
162 const player = JSON.parse(event.data);
164 window.game.set_player_vote_end_judging(player);
167 events.addEventListener("unvote-end-judging", event => {
168 const player = JSON.parse(event.data);
170 window.game.set_player_unvote_end_judging(player);
173 events.addEventListener("scores", event => {
174 const scores = JSON.parse(event.data);
176 window.game.set_scores(scores);
179 /*********************************************************
180 * Game and supporting classes *
181 *********************************************************/
183 function copy_to_clipboard(id)
185 const tmp = document.createElement("input");
186 tmp.setAttribute("value", document.getElementById(id).innerHTML);
187 document.body.appendChild(tmp);
189 document.execCommand("copy");
190 document.body.removeChild(tmp);
193 const GameInfo = React.memo(props => {
198 <div className="game-info">
199 <span className="game-id">{props.id}</span>
201 Share this link to invite friends:{" "}
202 <span id="game-share-url">{props.url}</span>
206 onClick={() => copy_to_clipboard('game-share-url')}
212 const PlayerInfo = React.memo(props => {
213 if (! props.player.id)
216 const all_players = [props.player, ...props.other_players];
218 const sorted_players = all_players.sort((a,b) => {
219 return b.score - a.score;
222 const names_and_scores = sorted_players.map(player => {
224 return `${player.name} (${player.score})`;
230 <div className="player-info">
231 <span className="players-header">Players: </span>
232 <span>{names_and_scores}</span>
237 function fetch_method_json(method, api = '', data = {}) {
238 const response = fetch(api, {
241 'Content-Type': 'application/json'
243 body: JSON.stringify(data)
248 function fetch_post_json(api = '', data = {}) {
249 return fetch_method_json('POST', api, data);
252 async function fetch_put_json(api = '', data = {}) {
253 return fetch_method_json('PUT', api, data);
256 class CategoryRequest extends React.PureComponent {
259 this.category = React.createRef();
261 this.handle_change = this.handle_change.bind(this);
262 this.handle_submit = this.handle_submit.bind(this);
265 handle_change(event) {
266 const category_input = this.category.current;
267 const category = category_input.value;
269 const match = category.match(/[0-9]+/);
271 const num_items = parseInt(match[0], 10);
272 if (num_items <= MAX_PROMPT_ITEMS)
273 category_input.setCustomValidity("");
277 async handle_submit(event) {
278 const form = event.currentTarget;
279 const category_input = this.category.current;
280 const category = category_input.value;
282 /* Prevent the default page-changing form-submission behavior. */
283 event.preventDefault();
285 const match = category.match(/[0-9]+/);
286 if (match === null) {
287 category_input.setCustomValidity("Category must include a number");
288 form.reportValidity();
292 const num_items = parseInt(match[0], 10);
294 if (num_items > MAX_PROMPT_ITEMS) {
295 category_input.setCustomValidity(`Maximum number of items is ${MAX_PROMPT_ITEMS}`);
296 form.reportValidity();
300 const response = await fetch_post_json("prompts", {
305 if (response.status === 200) {
306 const result = await response.json();
307 if (! result.valid) {
308 add_message("danger", result.message);
312 add_message("danger", "An error occurred submitting your category");
320 <div className="category-request">
321 <h2>Submit a Category</h2>
323 Suggest a category to play. Don't forget to include the
324 number of items for each person to submit.
327 <form onSubmit={this.handle_submit} >
328 <div className="form-field large">
332 placeholder="6 things at the beach"
335 onChange={this.handle_change}
340 <div className="form-field large">
341 <button type="submit">
352 const PromptOptions = React.memo(props => {
354 if (props.prompts.length === 0)
358 <div className="prompt-options">
359 <h2>Vote on Categories</h2>
361 Select any categories below that you'd like to play.
362 You can choose as many as you'd like.
364 {props.prompts.map(p => {
367 className="vote-button"
369 onClick={() => fetch_post_json(`vote/${p.id}`) }
372 <div className="vote-choices">
377 className="vote-choice"
391 const LetsPlay = React.memo(props => {
393 const quorum = Math.round((props.num_players + 1) / 2);
394 const max_votes = props.prompts.reduce(
395 (max_so_far, v) => Math.max(max_so_far, v.votes.length), 0);
397 if (max_votes < quorum)
400 const candidates = props.prompts.filter(p => p.votes.length >= quorum);
401 const index = Math.floor(Math.random() * candidates.length);
402 const winner = candidates[index];
405 <div className="lets-play">
408 That should be enough voting. If you're not waiting for any
409 other players to join, then let's start.
412 className="lets-play"
413 onClick={() => fetch_post_json(`start/${winner.id}`) }
421 class Ambiguities extends React.PureComponent {
426 const word_sets = props.words.map(word => {
427 const set = new Set();
433 word_sets: word_sets,
437 this.submitted = false;
438 this.judging_sent_recently = false;
441 async handle_submit() {
443 /* Don't submit a second time. */
447 const response = await fetch_post_json(
448 `judged/${this.props.prompt.id}`,{
449 word_groups: this.state.word_sets.map(set => Array.from(set))
453 if (response.status === 200) {
454 const result = await response.json();
455 if (! result.valid) {
456 add_message("danger", result.message);
460 add_message("danger", "An error occurred submitting the results of your judging");
464 this.submitted = true;
469 /* Let the server know we are doing some judging, (but rate limit
470 * this so we don't send a "judging" notification more frquently
473 if (! this.judging_sent_recently) {
474 fetch_post_json(`judging/${this.props.prompt.id}`);
475 this.judging_sent_recently = true;
476 setTimeout(() => { this.judging_sent_recently = false; }, 1000);
479 if (this.state.selected == word) {
480 /* Second click on same word removes the word from the group. */
481 const idx = this.state.word_sets.findIndex(s => s.has(word));
482 const set = this.state.word_sets[idx];
483 if (set.size === 1) {
484 /* When the word is already alone, there's nothing to do but
485 * to un-select it. */
492 const new_set = new Set([...set].filter(w => w !== word));
495 word_sets: [...this.state.word_sets.slice(0, idx),
498 ...this.state.word_sets.slice(idx+1)]
500 } else if (this.state.selected) {
501 /* Click of a second word groups the two together. */
502 const idx1 = this.state.word_sets.findIndex(s => s.has(this.state.selected));
503 const idx2 = this.state.word_sets.findIndex(s => s.has(word));
504 const set1 = this.state.word_sets[idx1];
505 const set2 = this.state.word_sets[idx2];
506 const new_set = new Set([...set2, ...set1]);
510 word_sets: [...this.state.word_sets.slice(0, idx1),
511 ...this.state.word_sets.slice(idx1 + 1, idx2),
513 ...this.state.word_sets.slice(idx2 + 1)]
518 word_sets: [...this.state.word_sets.slice(0, idx2),
520 ...this.state.word_sets.slice(idx2 + 1, idx1),
521 ...this.state.word_sets.slice(idx1 + 1)]
525 /* First click of a word selects it. */
533 let move_on_button = null;
535 if (this.props.idle) {
538 className="vote-button"
539 onClick={() => fetch_post_json(`end-judging/${this.props.prompt.id}`) }
542 <div className="vote-choices">
543 {[...this.props.votes].map(v => {
547 className="vote-choice"
558 if (this.props.players_judged.has(this.props.player.name)) {
560 <div className="please-wait">
561 <h2>Submission received</h2>
563 The following players have completed judging:
564 {[...this.props.players_judged].join(', ')}
567 Still waiting for the following players:
570 {Object.keys(this.props.players_judging).map(player => {
576 {this.props.players_judging[player] ?
577 <span className="typing"/> : null }
588 const btn_class = "ambiguity-button";
589 const btn_selected_class = btn_class + " selected";
592 <div className="ambiguities">
593 <h2>Judging Answers</h2>
595 Click on each pair of answers that should be scored as equivalent,
596 (and click any word twice to split it out from a group). Remember,
597 what goes around comes around, so it's best to be generous when
600 {this.state.word_sets.map(set => {
603 className="ambiguity-group"
604 key={Array.from(set)[0]}
606 {Array.from(set).map(word => {
609 className={this.state.selected === word ?
610 btn_selected_class : btn_class }
612 onClick={() => this.handle_click(word)}
622 Click here when done judging:<br/>
624 onClick={() => this.handle_submit()}
634 class ActivePrompt extends React.PureComponent {
638 const items = props.prompt.items;
640 this.submitted = false;
642 this.answers = [...Array(items)].map(() => React.createRef());
643 this.answering_sent_recently = false;
645 this.handle_submit = this.handle_submit.bind(this);
646 this.handle_change = this.handle_change.bind(this);
649 handle_change(event) {
650 /* We don't care (or even look) at what the player is typing at
651 * this point. We simply want to be informed that the player _is_
652 * typing so that we can tell the server (which will tell other
653 * players) that there is activity here.
656 /* Rate limit so that we don't send an "answering" notification
657 * more frequently than necessary.
659 if (! this.answering_sent_recently) {
660 fetch_post_json(`answering/${this.props.prompt.id}`);
661 this.answering_sent_recently = true;
662 setTimeout(() => { this.answering_sent_recently = false; }, 1000);
666 async handle_submit(event) {
667 const form = event.currentTarget;
669 /* Prevent the default page-changing form-submission behavior. */
670 event.preventDefault();
672 /* And don't submit a second time. */
676 const response = await fetch_post_json(`answer/${this.props.prompt.id}`, {
677 answers: this.answers.map(r => r.current.value)
679 if (response.status === 200) {
680 const result = await response.json();
681 if (! result.valid) {
682 add_message("danger", result.message);
686 add_message("danger", "An error occurred submitting your answers");
690 /* Everything worked. Server is happy with our answers. */
692 this.submitted = true;
696 let move_on_button = null;
697 if (this.props.idle) {
700 className="vote-button"
701 onClick={() => fetch_post_json(`end-answers/${this.props.prompt.id}`) }
704 <div className="vote-choices">
705 {[...this.props.votes].map(v => {
709 className="vote-choice"
720 if (this.props.players_answered.has(this.props.player.name)) {
722 <div className="please-wait">
723 <h2>Submission received</h2>
725 The following players have submitted their answers:
726 {[...this.props.players_answered].join(', ')}
729 Still waiting for the following players:
732 {Object.keys(this.props.players_answering).map(player => {
738 {this.props.players_answering[player] ?
739 <span className="typing"/> : null }
751 <div className="active-prompt">
752 <h2>The Game of Empathy</h2>
754 Remember, you're trying to match your answers with
755 what the other players submit.
756 Give {this.props.prompt.items} answers for the following prompt:
758 <h2>{this.props.prompt.prompt}</h2>
759 <form onSubmit={this.handle_submit}>
760 {[...Array(this.props.prompt.items)].map((whocares,i) => {
764 className="form-field large">
770 onChange={this.handle_change}
771 ref={this.answers[i]}
779 className="form-field large">
780 <button type="submit">
791 class Game extends React.PureComponent {
800 players_answered: new Set(),
801 players_answering: {},
802 answering_idle: false,
803 end_answers_votes: new Set(),
805 players_judged: new Set(),
808 end_judging_votes: new Set(),
814 set_game_info(info) {
820 set_player_info(info) {
826 set_other_player_info(info) {
827 const other_players_copy = [...this.state.other_players];
828 const idx = other_players_copy.findIndex(o => o.id === info.id);
830 other_players_copy[idx] = info;
832 other_players_copy.push(info);
835 other_players: other_players_copy
839 remove_player(info) {
841 other_players: this.state.other_players.filter(o => o.id !== info.id)
849 players_answered: new Set(),
850 players_answering: {},
851 answering_idle: false,
852 end_answers_votes: new Set(),
854 players_judged: new Set(),
857 end_judging_votes: new Set(),
863 set_prompts(prompts) {
869 add_or_update_prompt(prompt) {
870 const prompts_copy = [...this.state.prompts];
871 const idx = prompts_copy.findIndex(p => p.id === prompt.id);
873 prompts_copy[idx] = prompt;
875 prompts_copy.push(prompt);
878 prompts: prompts_copy
882 set_active_prompt(prompt) {
884 active_prompt: prompt
888 set_players_answered(players) {
890 players_answered: new Set(players)
894 set_player_answered(player) {
895 const new_players_answering = {...this.state.players_answering};
896 delete new_players_answering[player];
899 players_answered: new Set([...this.state.players_answered, player]),
900 players_answering: new_players_answering
904 set_players_answering(players) {
905 const players_answering = {};
906 for (let player of players) {
907 players_answering[player] = {active: false};
910 players_answering: players_answering
914 set_player_answering(player) {
917 ...this.state.players_answering,
918 [player]: {active: true}
923 set_answering_idle(value) {
925 answering_idle: value
929 set_end_answers(players) {
931 end_answers_votes: new Set(players)
935 set_player_vote_end_answers(player) {
937 end_answers_votes: new Set([...this.state.end_answers_votes, player])
941 set_player_unvote_end_answers(player) {
943 end_answers_votes: new Set([...this.state.end_answers_votes].filter(p => p !== player))
947 set_ambiguities(ambiguities) {
949 ambiguities: ambiguities
953 set_players_judged(players) {
955 players_judged: new Set(players)
959 set_player_judged(player) {
960 const new_players_judging = {...this.state.players_judging};
961 delete new_players_judging[player];
964 players_judged: new Set([...this.state.players_judged, player]),
965 players_judging: new_players_judging
969 set_players_judging(players) {
970 const players_judging = {};
971 for (let player of players) {
972 players_judging[player] = {active: false};
975 players_judging: players_judging
979 set_player_judging(player) {
982 ...this.state.players_judging,
983 [player]: {active: true}
988 set_judging_idle(value) {
994 set_end_judging(players) {
996 end_judging_votes: new Set(players)
1000 set_player_vote_end_judging(player) {
1002 end_judging_votes: new Set([...this.state.end_judging_votes, player])
1006 set_player_unvote_end_judging(player) {
1008 end_judging_votes: new Set([...this.state.end_judging_votes].filter(p => p !== player))
1012 set_scores(scores) {
1025 const state = this.state;
1026 const players_total = 1 + state.other_players.length;
1030 <div className="scores">
1033 {state.scores.scores.map(score => {
1035 <li key={score.player}>
1036 {score.player}: {score.score}
1041 <h2>Words submitted</h2>
1043 {state.scores.words.map(word => {
1045 <li key={word.word}>
1046 {`${word.word}: ${word.players.join(', ')}`}
1052 className="new-game"
1053 onClick={() => fetch_post_json('reset') }
1061 if (state.ambiguities){
1063 prompt={state.active_prompt}
1064 words={state.ambiguities}
1065 player={state.player_info}
1066 players_judged={state.players_judged}
1067 players_judging={state.players_judging}
1068 idle={state.judging_idle}
1069 votes={state.end_judging_votes}
1073 if (state.active_prompt) {
1074 return <ActivePrompt
1075 prompt={state.active_prompt}
1076 player={state.player_info}
1077 players_answered={state.players_answered}
1078 players_answering={state.players_answering}
1079 idle={state.answering_idle}
1080 votes={state.end_answers_votes}
1090 id={state.game_info.id}
1091 url={state.game_info.url}
1096 player={state.player_info}
1097 other_players={state.other_players}
1099 <p key="spacer"></p>,
1101 key="category-request"
1105 prompts={state.prompts}
1109 num_players={1+state.other_players.length}
1110 prompts={state.prompts}
1116 ReactDOM.render(<Game
1117 ref={(me) => window.game = me}
1118 />, document.getElementById("empathy"));