function undisplay(element) {
element.style.display="none";
}
function add_message(severity, message) {
message = `
×
${message}
`;
const message_area = document.getElementById('message-area');
message_area.insertAdjacentHTML('beforeend', message);
}
/*********************************************************
* Handling server-sent event stream *
*********************************************************/
const events = new EventSource("events");
events.onerror = function(event) {
if (event.target.readyState === EventSource.CLOSED) {
setTimeout(() => {
add_message("danger", "Connection to server lost.");
}, 1000);
}
};
events.addEventListener("game-info", event => {
const info = JSON.parse(event.data);
window.game.set_game_info(info);
});
events.addEventListener("player-info", event => {
const info = JSON.parse(event.data);
window.game.set_player_info(info);
});
events.addEventListener("player-enter", event => {
const info = JSON.parse(event.data);
window.game.set_other_player_info(info);
});
events.addEventListener("player-update", event => {
const info = JSON.parse(event.data);
if (info.id === window.game.state.player_info.id)
window.game.set_player_info(info);
else
window.game.set_other_player_info(info);
});
events.addEventListener("game-state", event => {
const state = JSON.parse(event.data);
window.game.set_prompts(state.prompts);
window.game.set_active_prompt(state.active_prompt);
window.game.set_scores(state.scores);
});
events.addEventListener("prompt", event => {
const prompt = JSON.parse(event.data);
window.game.add_or_update_prompt(prompt);
});
events.addEventListener("start", event => {
const prompt = JSON.parse(event.data);
window.game.set_active_prompt(prompt);
});
events.addEventListener("answered", event => {
const players_answered = JSON.parse(event.data);
window.game.set_players_answered(players_answered);
});
events.addEventListener("scores", event => {
const scores = JSON.parse(event.data);
window.game.set_scores(scores);
});
/*********************************************************
* Game and supporting classes *
*********************************************************/
function copy_to_clipboard(id)
{
const tmp = document.createElement("input");
tmp.setAttribute("value", document.getElementById(id).innerHTML);
document.body.appendChild(tmp);
tmp.select();
document.execCommand("copy");
document.body.removeChild(tmp);
}
const GameInfo = React.memo(props => {
if (! props.id)
return null;
return (
{props.id}
{" "}
Share this link to invite friends:{" "}
{props.url}
{" "}
);
});
const PlayerInfo = React.memo(props => {
if (! props.player.id)
return null;
return (
Players:
{props.player.name}
{props.player.score > 0 ? ` (${props.player.score})` : ""}
{props.other_players.map(other => (
{", "}
{other.name}
{other.score > 0 ? ` (${other.score})` : ""}
))}
);
});
function fetch_method_json(method, api = '', data = {}) {
const response = fetch(api, {
method: method,
headers: {
'Content-Type': 'application/json'
},
body: JSON.stringify(data)
});
return response;
}
function fetch_post_json(api = '', data = {}) {
return fetch_method_json('POST', api, data);
}
async function fetch_put_json(api = '', data = {}) {
return fetch_method_json('PUT', api, data);
}
class CategoryRequest extends React.PureComponent {
constructor(props) {
super(props);
this.category = React.createRef();
this.handle_change = this.handle_change.bind(this);
this.handle_submit = this.handle_submit.bind(this);
}
handle_change(event) {
const category_input = this.category.current;
const category = category_input.value;
if (/[0-9]/.test(category))
category_input.setCustomValidity("");
}
handle_submit(event) {
const form = event.currentTarget;
const category_input = this.category.current;
const category = category_input.value;
/* Prevent the default page-changing form-submission behavior. */
event.preventDefault();
const match = category.match(/[0-9]+/);
if (match === null) {
category_input.setCustomValidity("Category must include a number");
form.reportValidity();
return;
}
fetch_post_json("prompts", {
items: parseInt(match[0], 10),
prompt: category
});
form.reset();
}
render() {
return (
Submit a Category
Suggest a category to play. Don't forget to include the
number of items for each person to submit.
);
}
}
const PromptOptions = React.memo(props => {
if (props.prompts.length === 0)
return null;
return (
Vote on Categories
Select any categories below that you'd like to play.
You can choose as many as you'd like.
{props.prompts.map(p => {
return (
);
})}
);
});
const LetsPlay = React.memo(props => {
function handle_click(prompt_id) {
fetch_post_json
}
const quorum = Math.round((props.num_players + 1) / 2);
const max_votes = props.prompts.reduce(
(max_so_far, v) => Math.max(max_so_far, v.votes.length), 0);
if (max_votes < quorum)
return null;
const candidates = props.prompts.filter(p => p.votes.length >= quorum);
const index = Math.floor(Math.random() * candidates.length);
const winner = candidates[index];
return (
Let's Play
That should be enough voting. If you're not waiting for any
other players to join, then let's start.
);
});
class ActivePrompt extends React.PureComponent {
constructor(props) {
super(props);
const items = props.prompt.items;
this.state = {
submitted: false
};
this.answers = [...Array(items)].map(() => React.createRef());
this.handle_submit = this.handle_submit.bind(this);
}
async handle_submit(event) {
const form = event.currentTarget;
/* Prevent the default page-changing form-submission behavior. */
event.preventDefault();
const response = await fetch_post_json(`answer/${this.props.prompt.id}`, {
answers: this.answers.map(r => r.current.value)
});
if (response.status == 200) {
const result = await response.json();
if (! result.valid) {
add_message("danger", result.message);
return;
}
} else {
add_message("danger", "An error occurred submitting your answers");
return;
}
/* Everything worked. Server is happy with our answers. */
form.reset();
this.setState({
submitted: true
});
}
render() {
if (this.state.submitted)
return (
{this.props.players_answered}/
{this.props.players_total} players have responded
Please wait for the rest of the players to submit their answers.
);
return (
The Game of Empathy
Remember, you're trying to match your answers with
what the other players submit.
Give {this.props.prompt.items} answers for the following prompt:
{this.props.prompt.prompt}
);
}
}
class Game extends React.PureComponent {
constructor(props) {
super(props);
this.state = {
game_info: {},
player_info: {},
other_players: [],
prompts: [],
active_prompt: null,
players_answered: 0
};
}
set_game_info(info) {
this.setState({
game_info: info
});
}
set_player_info(info) {
this.setState({
player_info: info
});
}
set_other_player_info(info) {
const other_players_copy = [...this.state.other_players];
const idx = other_players_copy.findIndex(o => o.id === info.id);
if (idx >= 0) {
other_players_copy[idx] = info;
} else {
other_players_copy.push(info);
}
this.setState({
other_players: other_players_copy
});
}
set_prompts(prompts) {
this.setState({
prompts: prompts
});
}
add_or_update_prompt(prompt) {
const prompts_copy = [...this.state.prompts];
const idx = prompts_copy.findIndex(p => p.id === prompt.id);
if (idx >= 0) {
prompts_copy[idx] = prompt;
} else {
prompts_copy.push(prompt);
}
this.setState({
prompts: prompts_copy
});
}
set_active_prompt(prompt) {
this.setState({
active_prompt: prompt
});
}
set_players_answered(players_answered) {
this.setState({
players_answered: players_answered
});
}
set_scores(scores) {
this.setState({
scores: scores
});
}
render() {
const state = this.state;
const players_total = 1 + state.other_players.length;
if (state.scores) {
return (
Scores
{state.scores.scores.map(score => {
return (
-
{score.player}: {score.score}
);
})}
Words submitted
{state.scores.words.map(word => {
return (
-
{word.word}:
{word.players.map(p => {
return (
{p}{" "}
);
})}
);
})}
);
}
if (state.active_prompt) {
return ;
}
return [
,
,
,
,
,
];
}
}
ReactDOM.render( window.game = me}
/>, document.getElementById("empathy"));