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index.js
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index.js
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const express = require("express");
const app = express();
const server = require("http").Server(app);
const io = require("socket.io")(server);
const bodyParser = require('body-parser');
const Database = require("@replit/database");
const db = new Database();
const session = require('express-session');
const f = require("./functions");
const users = {};
const characters = {};
const characterslist = ["Spiderman", "Pikachu", "Hercules", "Jedi", "Voldemort", "Thanos", "Medusa"];
app.engine('html', require('ejs').renderFile);
app.set('view engine', 'html');
app.use(express.static("public"));
app.use(bodyParser.urlencoded({extended: true}));
app.use(session({secret: process.env["secret"]}));
app.get("/", (req, res) => {
res.render("index.html", {loggedIn:f.loggedIn(req), user:f.getUser(req)});
});
app.get("/login", (req, res) => {
if(f.loggedIn(req)){
res.redirect("/");
return;
}
res.render("login.html", {loggedIn:false, error:false});
});
app.post("/login", async (req, res) => {
var username = req.body.username;
var password = req.body.password;
if((await db.list()).includes(username) && (await db.get(username)).p == password){
req.session.username = username;
res.redirect("/");
} else {
res.render("login.html", {error: "Invalid username and/or password.", loggedIn:false});
}
});
app.get("/signup", (req, res) => {
if(f.loggedIn(req)){
res.redirect("/");
return;
}
res.render("signup.html", {error:false, loggedIn:false})
});
app.post("/signup", (req, res) => {
var newusername = req.body.newusername;
var newpassword = req.body.newpassword;
var captcha_response = req.body["g-recaptcha-response"];
letters = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'];
cap_letters = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'];
numbers = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9'];
allchars = letters.concat(cap_letters, numbers, ['_']);
goodusername = true;
for(let i of newusername){
if(!allchars.includes(i)){
goodusername = false;
}
}
if(goodusername){
db.list().then(keys => {
if(keys.includes(newusername)){
res.render("signup.html", {error:"Username taken.", loggedIn:false});
} else if(newusername == "" || newpassword == ""){
res.render("signup.html", {error:"All fields are required.", loggedIn:false});
} else{
console.log(newusername);
f.is_human(captcha_response).then(resp => {
if(!resp){
console.log("not verified")
res.render("signup.html", {error:"No bots allowed!", loggedIn:false});
return;
}
db.set(newusername, {p:newpassword, c:"Spiderman"}).then(() => {
console.log("new account created");
req.session.username = newusername;
res.redirect("/");
});
});
}
});
} else{
res.render("signup.html", {error:"Username can only contain alphanumeric characters and underscores.", loggedIn:false});
}
});
app.get("/join", async (req, res) => {
if(!f.loggedIn(req)){
res.redirect("/login");
return;
}
let user = f.getUser(req);
let all = [...characterslist];
for(let i = 0; i < all.length; i++){
if(all[i] == (await f.getCharacter(user))){
let c = all[i];
all.splice(i, 1);
all = [c].concat(all);
break;
}
}
res.render("join.html", {loggedIn:true, user:user, characters:all});
});
app.get("/changecharacter", async (req, res) => {
let character = req.query.character;
if(!character){
res.send("No character provided.");
return;
}
if(!characterslist.includes(character)){
res.send("Invalid character provided.");
return;
}
await f.setCharacter(f.getUser(req), character);
res.send("Success");
console.log(f.getUser(req) + " changed their character to " + character);
});
app.get("/howtoplay", (req, res) => {
res.render("howtoplay.html", {loggedIn:f.loggedIn(req), user:f.getUser(req)});
});
app.get("/play", async (req, res) => {
if(!f.loggedIn(req)){
res.redirect("/login");
return;
}
res.render("playagainstcomputer.html", {user:f.getUser(req), loggedIn:true, character: (await f.getCharacter(f.getUser(req)))});
console.log(f.getUser(req) + " is playing against the computer with character " + (await f.getCharacter(f.getUser(req))));
});
app.get("/game/:room", async (req, res) => {
if(!f.loggedIn(req)){
res.redirect("/login");
return;
}
let room = req.params.room;
if(!Object.keys(users).includes(room)){
users[room] = {};
}
if(!Object.keys(characters).includes(room)){
characters[room] = {};
}
length = Object.keys(users[room]).length;
if(length < 2){
if(length == 0){
res.render("player1.html", {user:f.getUser(req), room:room, loggedIn:true, character: (await f.getCharacter(f.getUser(req)))});
} else {
let otheruser = Object.values(users[room])[0];
let othercharacter = Object.values(characters[room])[0];
res.render("player2.html", {user:f.getUser(req), room:room, otheruser:otheruser, othercharacter: othercharacter, character: (await f.getCharacter(f.getUser(req))), loggedIn:true});
}
} else {
res.render("error.html", {title:"Multiplayer Battle Game", content:`<h1 style="margin-top:50px;">Sorry, this room already has 2 players. Go join another.</h1>`, loggedIn:true, user:f.getUser(req)});
};
});
app.get("/game", (req, res) => {
res.redirect("/join");
});
app.get("/logout", (req, res) => {
req.session.destroy();
res.redirect("/");
});
app.get("/*", (req, res) => {
res.status(404).render("error.html", {loggedIn:f.loggedIn(req), user:f.getUser(req), title:"Page Not Found", content:`<h1>Error 404</h1><h2>Page Not Found</h2><img src="/img/robot.jpeg" style="width:400px" style="border:none"><br><br><a href="/" style="color:white; font-size:20px">Go to home</a>`});
});
io.on("connection", socket => {
socket.on("joined", (room, user, character) => {
if(!users[room]) users[room] = {};
users[room][socket.id] = user;
if(!characters[room]) characters[room] = {};
characters[room][socket.id] = character;
socket.join(room);
socket.broadcast.to(room).emit("joined", user, character);
console.log(`${user} joined the room ${room} with character ${character}`);
});
socket.on("disconnect", () => {
for(i of Object.keys(users)){
if(Object.keys(users[i]).includes(socket.id)){
let left = users[i][socket.id];
delete users[i][socket.id];
delete characters[i][socket.id];
io.to(i).emit("leave", left);
console.log(`${left} left the room ${i}`);
return;
}
}
});
socket.on("move", (room, data) => {
socket.broadcast.to(room).emit("move", data);
});
socket.on("chat message", (room, user, message) => {
socket.broadcast.to(room).emit("chat message", user, message);
});
socket.on("new invitation", invitation => {
io.emit("new invitation", invitation);
console.log(`${invitation.from} invited ${invitation.to} to the room ${invitation.room}`);
});
});
server.listen(3000, () => {
console.log("server started");
});