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server.js
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server.js
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const dgram = require("dgram");
const server = dgram.createSocket("udp4");
const Commands = require("./commands");
const Player = require("./player");
const Game = require("./game");
let maxPlayers = 4,
gameSize = 8,
players = [],
turn = 0,
game,
turnCount = 0;
const rl = require("readline").createInterface({
input: process.stdin,
output: process.stdout
});
const main = async () => {
let answer;
//wait for answer if Player is AI
do {
answer = await question("max players?(2-4)?");
if (!answer || parseInt(answer) < 2 || parseInt(answer) > 4) {
console.log("Wrong max players type secodn time:");
}
} while (!answer || parseInt(answer) < 2 || parseInt(answer) > 4);
//wait for Player name
maxPlayers = parseInt(answer);
do {
answer = await question("board size(4-8:)");
if (!answer || parseInt(answer) < 4 || parseInt(answer) > 8) {
console.log("Wrong board size type secodn time:");
continue;
}
} while (!answer || parseInt(answer) < 4 || parseInt(answer) > 8);
gameSize = parseInt(answer);
server.bind(41234);
};
main();
server.on("listening", () => {
const address = server.address();
console.log(`server listening ${address.address}:${address.port}`);
});
server.on("error", err => {
console.log(`server error:\n${err.stack}`);
//send to players if on server is any error
for (let player of players) {
server.send(
Buffer.from(Buffer.from(Commands.ERROR)),
player.port,
player.address,
err => {}
);
}
server.close();
});
server.on("message", (msg, rinfo) => {
console.log(`server got: ${msg} from ${rinfo.address}:${rinfo.port}`);
let command = msg.toString().split(" ");
switch (command[0]) {
//connect player
case "connect":
connectPlayer(rinfo, command[1]);
break;
//player made move
case Commands.MOVE:
turnResolve(command[1], parseInt(command[2]), parseInt(command[3]));
break;
}
});
// server listening 0.0.0.0:41234
function connectPlayer(rinfo, name) {
//if players is less than maximum
if (players.length < maxPlayers) {
//add new player to array
players.push(new Player(rinfo.address, rinfo.port, name));
//send info that player is in the game
server.send(
Buffer.from(Buffer.from(Commands.CONNECTED)),
rinfo.port,
rinfo.address,
err => {}
);
// if max players are in the game
if (players.length === maxPlayers) {
// create string with list of player name
let list = "";
for (let player of players) {
list += " " + player.name;
}
for (let player of players) {
//for each player send info about game, board size and player names
server.send(
Buffer.from(`${Commands.START} ${gameSize + list}`),
player.port,
player.address,
err => {}
);
game = new Game(gameSize);
let tempPlayers = [];
for (let player of players) {
tempPlayers.push(player.name);
}
//add players to game
game.addPlayers(tempPlayers);
}
// send info for player who have turn
sendTurn();
}
} else {
//send info that server is full
server.send(
Buffer.from(Commands.SERVERFULL),
rinfo.port,
rinfo.address,
err => {}
);
}
}
function turnResolve(name, x, y) {
for (let player of players) {
//for each player send info about move(player, x ,y)
server.send(
Buffer.from(`${Commands.MOVE} ${name} ${x} ${y}`),
player.port,
player.address,
err => {}
);
}
// add move to board
game.add(name, parseInt(x), parseInt(y));
turnCount++;
//show board
displayBoard();
// send to player who have turn info about that
sendTurn();
}
function removePlayer(i) {
server.send(
Buffer.from(Commands.DISCONNECTED),
players[i].port,
players[i].address,
err => {}
);
players.splice(i, 1);
}
function sendTurn() {
turn = turn >= players.length - 1 ? 0 : turn + 1;
let isOnBoard = game.playersOnBoard().indexOf(players[turn].name) >= 0;
let playersOnBoard = game.playersOnBoard().length;
if (playersOnBoard == 1 && isOnBoard) {
console.log("Player: " + players[turn].name + " WINS!");
server.send(
Buffer.from(Commands.WIN),
players[turn].port,
players[turn].address,
err => {
server.close();
process.exit();
}
);
removePlayer(turn);
} else if (!isOnBoard) {
server.send(
Buffer.from(Commands.LOSE),
players[turn].port,
players[turn].address,
err => {}
);
removePlayer(turn);
sendTurn();
} else
server.send(
Buffer.from(Commands.YOURTURN),
players[turn].port,
players[turn].address,
err => {}
);
}
function displayBoard() {
console.log(turnCount);
let yrows = "\x1b[47m\x1b[30m ";
for (let i = 0; i < game.map_.length; i++) yrows += i + " ";
yrows += "\x1b[0m";
console.log(yrows);
for (let y = 0; y < game.map_.length; y++) {
let row = "";
for (let x = 0; x < game.map_.length; x++) {
if (x == 0) row += "\x1b[47m\x1b[30m" + y + " \x1b[0m";
if (game.map_[y][x].playerName == null) {
row += "\x1b[37m" + game.map_[y][x].points;
} else if (
players[0] != undefined &&
game.map_[y][x].playerName == players[0].name
) {
row += "\x1b[32m" + game.map_[y][x].points;
} else if (
players[1] != undefined &&
game.map_[y][x].playerName == players[1].name
) {
row += "\x1b[33m" + game.map_[y][x].points;
} else if (
players[2] != undefined &&
game.map_[y][x].playerName == players[2].name
) {
row += "\x1b[34m" + game.map_[y][x].points;
} else if (
players[3] != undefined &&
game.map_[y][x].playerName == players[3].name
) {
row += "\x1b[35m" + game.map_[y][x].points;
}
row += " \x1b[0m";
}
console.log(row);
}
console.log();
}
function question(question) {
return new Promise((resolve, reject) => {
rl.question(question, answer => {
resolve(answer);
});
});
}