buzzers/room.js

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3.7 KiB
JavaScript
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const chars = require('./characters.json');
const rooms = {};
function shuffle(a) {
for (let i = a.length - 1; i > 0; i--) {
const j = Math.floor(Math.random() * (i + 1));
[a[i], a[j]] = [a[j], a[i]];
}
return a;
}
function getOrCreateRoom(roomId) {
let room = rooms[roomId];
if (!room) {
room = {
roomId: roomId,
participants: [],
audience: [],
characters: shuffle(chars),
canBuzz: true
};
rooms[roomId] = room;
}
return room;
}
function addParticipant(roomId, participantId, participantName) {
let room = getOrCreateRoom(roomId);
room.participants.push({
participantId,
participantName,
character: room.characters[room.participants.length],
active: true
});
rooms[roomId] = room;
}
function removeParticipant(roomId, participantId) {
let room = getOrCreateRoom(roomId);
let participant = room.participants.find(p => p.participantId === participantId);
if (participant) {
participant.active = false;
room.audience.forEach(ws => {
ws.send(JSON.stringify({
type: "participants",
participants: room.participants
}));
});
}
}
function addParticipantWS(roomId, participantId, ws) {
let room = getOrCreateRoom(roomId);
let participant = room.participants.find(p => p.participantId === participantId);
if (participant) {
participant.ws = ws;
room.audience.forEach(ws => {
ws.send(JSON.stringify({
type: "participants",
participants: room.participants
}));
});
}
}
function addAudienceWS(roomId, ws) {
let room = getOrCreateRoom(roomId);
room.audience.push(ws);
ws.send(JSON.stringify({
type: "participants",
participants: room.participants
}));
}
function buzz(roomId, participant) {
let room = getOrCreateRoom(roomId);
if (room.canBuzz) {
room.canBuzz = false;
participant = room.participants.find(p => p.participantId === participant.participantId);
if (participant) {
room.participants.forEach(p => {
if (p.ws && p.participantId !== participant.participantId) {
p.ws.send(JSON.stringify({
type: "buzz",
participant: participant.participantName,
msg: `<img src="${participant.character}"><div>${participant.participantName} buzzed!</div>`
}));
}
});
room.audience.forEach(ws => {
ws.send(JSON.stringify({
type: "buzz",
participant: participant
}));
});
}
}
}
function reset(roomId) {
let room = getOrCreateRoom(roomId);
room.canBuzz = true;
room.participants.forEach(p => {
p.ws.send(JSON.stringify({
type: "reset"
}));
});
}
function closeRoom(roomId) {
let room = getOrCreateRoom(roomId);
room.canBuzz = false;
room.participants.forEach(p => {
if (p.ws) {
p.ws.send(JSON.stringify({
type: "close"
}));
}
});
delete rooms[roomId];
}
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function updateScore(roomId, participantId, points) {
let room = getOrCreateRoom(roomId);
let participant = room.participants.find(p => p.participantId === participantId);
if (participant) {
if (!participant.score) participant.score = 0;
participant.score += points;
participant.ws.send(JSON.stringify({
type: "score",
score: participant.score,
}));
}
room.audience.forEach(ws => {
ws.send(JSON.stringify({
type: "participants",
participants: room.participants.map(p => { return {
participantId: p.participantId,
character: p.character,
participantName: p.participantName,
score: p.score,
active: p.active,
}})
}));
});
}
module.exports = {getOrCreateRoom, addParticipant, addParticipantWS, addAudienceWS, buzz, removeParticipant, reset, closeRoom, updateScore}