2021-08-10 00:40:30 +01:00
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const net = require('net');
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const port = 25565;
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2021-08-10 08:28:28 +01:00
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const { createGzip, deflateSync } = require("zlib");
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2021-08-10 00:40:30 +01:00
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const chunk = require("./chunk.js");
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const myman = require("./bufferStuff.js");
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2021-08-10 08:28:28 +01:00
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const users = [];
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function addUser(socket, username) {
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2021-08-10 23:21:44 +01:00
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const thething = [4 * users.length, socket, username, false, [-2890438704, -2345654261, -8972334789], [0, 0], null, false];
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users.push(thething);
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return thething;
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2021-08-10 08:28:28 +01:00
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}
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2021-08-10 00:40:30 +01:00
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const server = new net.Server();
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const protocolVersion = 14;
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server.listen(port, function() {
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console.log(`Server listening for connection requests on socket localhost:${port}`);
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});
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2021-08-10 23:21:44 +01:00
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setInterval(() => {
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// Server tick interval
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for (let tickUser of users) {
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if (!tickUser[7]) continue;
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if (tickUser[6] == null) {
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const writer = new myman.Writer();
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writer.writeByte(0x22);
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writer.writeInt(tickUser[0]);
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writer.writeInt(Math.floor(tickUser[4][0] * 32));
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writer.writeInt(Math.floor(tickUser[4][1] * 32));
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writer.writeInt(Math.floor(tickUser[4][2] * 32));
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writer.writeByte(Math.floor((tickUser[5][0] * 256) / 360));
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writer.writeByte(Math.floor((tickUser[5][1] * 256) / 360));
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for (let user of users) {
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if (user[0] == tickUser[0]) continue;
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user[1].write(writer.buffer);
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}
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tickUser[6] = [tickUser[4][0], tickUser[4][1], tickUser[4][2]];
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} else {
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if (Math.floor(tickUser[4][0]) != Math.floor(tickUser[6][0]) || Math.floor(tickUser[4][1]) != Math.floor(tickUser[6][1]) || Math.floor(tickUser[4][2]) != Math.floor(tickUser[6][2])) {
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const relX = Math.floor(((tickUser[4][0] - tickUser[6][0]) * 32));
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const relY = Math.floor(((tickUser[4][1] - tickUser[6][1]) * 32));
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const relZ = Math.floor(((tickUser[4][2] - tickUser[6][2]) * 32));
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const writer = new myman.Writer();
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if ((relX < -128 || relX >= 128 || relY < -128 || relY >= 128 || relZ < -128 || relZ >= 128 )) {
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writer.writeByte(0x22);
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writer.writeInt(tickUser[0]);
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writer.writeInt(Math.floor(tickUser[4][0] * 32));
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writer.writeInt(Math.floor(tickUser[4][1] * 32));
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writer.writeInt(Math.floor(tickUser[4][2] * 32));
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writer.writeByte(Math.floor((tickUser[5][0] * 256) / 360));
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writer.writeByte(Math.floor((tickUser[5][1] * 256) / 360));
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} else {
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writer.writeByte(0x1F);
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writer.writeInt(tickUser[0]);
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writer.writeByte(-relX);
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writer.writeByte(relY);
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writer.writeByte(-relZ);
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}
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for (let user of users) {
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if (user[0] == tickUser[0]) continue;
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user[1].write(writer.buffer);
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}
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tickUser[6][0] = tickUser[4][0];
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tickUser[6][1] = tickUser[4][1];
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tickUser[6][2] = tickUser[4][2];
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}
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}
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}
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}, 1000 / 20);
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2021-08-10 00:40:30 +01:00
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server.on('connection', function(socket) {
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console.log('A new connection has been established.');
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//socket.write('Hello, client.');
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2021-08-10 23:21:44 +01:00
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const me = addUser(socket, null);
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2021-08-10 00:40:30 +01:00
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socket.on('data', function(chunk) {
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//console.log(chunk);
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const reader = new myman.Reader(chunk);
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const id = reader.readByte();
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2021-08-10 23:21:44 +01:00
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//console.log(`ID: ${id}`);
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2021-08-10 00:40:30 +01:00
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switch (id) {
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case 0:
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keepAlive(socket);
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break;
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case 1:
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2021-08-10 23:21:44 +01:00
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loginRequest(socket, reader, me);
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2021-08-10 00:40:30 +01:00
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break;
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case 2:
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handshake(socket, reader);
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break;
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2021-08-10 08:28:28 +01:00
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case 3:
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2021-08-10 23:21:44 +01:00
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sendChat(reader, me);
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2021-08-10 08:28:28 +01:00
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break;
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2021-08-10 00:40:30 +01:00
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case 0x0B:
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2021-08-10 23:21:44 +01:00
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playerPos(reader, me);
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2021-08-10 00:40:30 +01:00
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break;
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}
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2021-08-10 23:21:44 +01:00
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//if (me[3]) teleportPlayer(me[1], 16 * me[0], 65 + 1.6200000047683716, 65, 0, -180 * (me[0] - 1), 0);
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2021-08-10 00:40:30 +01:00
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});
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socket.on('end', function() {
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console.log('Closing connection with the client');
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});
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socket.on('error', function(err) {
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console.log(`Error: ${err}`);
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});
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});
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2021-08-10 23:21:44 +01:00
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function keepAlive(socket, reader = new myman.Reader) {
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const thething = reader.readInt();
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2021-08-10 00:40:30 +01:00
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const writer = new myman.Writer();
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writer.writeByte(0x00);
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2021-08-10 23:21:44 +01:00
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writer.writeInt(thething);
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2021-08-10 00:40:30 +01:00
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socket.write(writer.buffer);
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}
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2021-08-10 23:21:44 +01:00
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function loginRequest(socket, reader = new myman.Reader, me = [0, null, ""]) {
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2021-08-10 00:40:30 +01:00
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const proto = reader.readInt();
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const username = reader.readString();
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const mapSeed = reader.readLong();
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const dimension = reader.readByte();
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console.log("Protocol Version: " + proto);
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console.log("Username: " + username);
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2021-08-10 23:21:44 +01:00
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me[2] = username;
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2021-08-10 00:40:30 +01:00
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const writer = new myman.Writer();
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writer.writeByte(0x01);
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writer.writeInt(1);
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writer.writeString("");
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writer.writeLong(971768181197178410);
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writer.writeByte(0);
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socket.write(writer.buffer);
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writer.buffer = Buffer.alloc(0);
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writer.writeByte(0x06);
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writer.writeInt(0);
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writer.writeInt(65);
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writer.writeInt(0);
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socket.write(writer.buffer);
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preChunk(socket, 0, 0, true);
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2021-08-10 08:28:28 +01:00
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//writeChunk(socket);
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writer.buffer = Buffer.alloc(0);
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writer.writeByte(0x0A);
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writer.writeBool(true);
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socket.write(writer.buffer);
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2021-08-10 23:21:44 +01:00
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sendMessage(`\u00A7e${username} has joined the game`);
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me[3] = true;
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// I couldn't figure out how to construct a chunk lmao
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// ima just send each block individually
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// TODO: yknow, figure out how to chunk.
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for (let x = 0; x < 16; x++) {
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for (let z = 0; z < 16; z++) {
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writer.reset();
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writer.writeByte(0x35);
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writer.writeInt(x);
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writer.writeByte(63); // 63 == 64 because the y byte has 1 subtracted from it
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writer.writeInt(z);
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writer.writeByte(1); // Block ID
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writer.writeByte(0); // Metadata
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socket.write(writer.buffer);
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}
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}
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writer.buffer = Buffer.alloc(0);
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// Spawn this player for other players
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writer.writeByte(0x14);
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writer.writeInt(me[0]);
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writer.writeString(me[2]);
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writer.writeInt(0);
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writer.writeInt(65 * 32);
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writer.writeInt(0);
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writer.writeByte(0);
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writer.writeByte(0);
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writer.writeShort(0);
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for (let user of users) {
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if (user[0] == me[0]) continue;
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user[1].write(writer.buffer);
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}
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// Send other players to this player
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for (let user of users) {
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if (user[0] == me[0]) continue;
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writer.reset();
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writer.writeByte(0x14);
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writer.writeInt(user[0]);
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writer.writeString(user[2]);
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writer.writeInt(0);
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writer.writeInt(65 * 32);
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writer.writeInt(0);
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writer.writeByte(0);
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writer.writeByte(0);
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writer.writeShort(0);
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socket.write(writer.buffer);
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}
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// spawned player equipment
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for (let i = 0; i < 5; i++) {
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writer.buffer = Buffer.alloc(0);
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writer.writeByte(0x05);
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writer.writeInt(me[0]);
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writer.writeShort(i);
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writer.writeShort(-1);
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writer.writeShort(0);
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for (let user of users) {
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if (user[0] == me[0]) continue;
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user[1].write(writer.buffer);
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}
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}
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2021-08-10 00:40:30 +01:00
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}
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function handshake(socket, reader = new myman.Reader) {
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const username = reader.readString();
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const writer = new myman.Writer();
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writer.writeByte(0x02);
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writer.writeString("-");
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socket.write(writer.buffer);
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}
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2021-08-10 23:21:44 +01:00
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function sendChat(reader = new myman.Reader, sender) {
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2021-08-10 08:28:28 +01:00
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const message = reader.readString();
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2021-08-10 23:21:44 +01:00
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if (message.length < 120) {
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const writer = new myman.Writer();
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writer.writeByte(0x03);
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if (sender != null) writer.writeString(`<${sender[2]}> ${message}`);
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for (let user of users) {
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user[1].write(writer.buffer);
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}
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}
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}
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function sendMessage(message = "") {
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2021-08-10 08:28:28 +01:00
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if (message.length < 120) {
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const writer = new myman.Writer();
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writer.writeByte(0x03);
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writer.writeString(message);
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2021-08-10 23:21:44 +01:00
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for (let user of users) {
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user[1].write(writer.buffer);
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}
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2021-08-10 08:28:28 +01:00
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}
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}
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2021-08-10 23:21:44 +01:00
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function playerPos(reader = new myman.Reader, me) {
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2021-08-10 00:40:30 +01:00
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const x = reader.readDouble();
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const y = reader.readDouble();
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const stance = reader.readDouble();
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const z = reader.readDouble();
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const onGround = reader.readBool();
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2021-08-10 23:21:44 +01:00
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/*console.log("X: " + );
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console.log("Y: " + );
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console.log("Z: " + );
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2021-08-10 00:40:30 +01:00
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console.log("Stance: " + stance);
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console.log("On Ground: " + onGround);*/
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2021-08-10 23:21:44 +01:00
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/*const writer = new myman.Writer();
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const shouldTeleport = (Math.abs(Math.floor(x * 32)) >= 8 || Math.abs(Math.floor(y * 32)) >= 8 || Math.abs(Math.floor(z * 32)) >= 8);
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const relX = Math.floor(((x - me[4][0]) * 32));
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const relY = Math.floor(((y - me[4][1]) * 32));
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const relZ = Math.floor(((z - me[4][2]) * 32));*/
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/*if ((relX < -128 || relX >= 128 || relY < -128 || relY >= 128 || relZ < -128 || relZ >= 128 )) {
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writer.writeByte(0x22);
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writer.writeInt(me[0]);
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writer.writeInt(Math.floor(x * 32));
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writer.writeInt(Math.floor(y * 32));
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writer.writeInt(Math.floor(z * 32));
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writer.writeByte(Math.floor((me[5][0] * 256) / 360));
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writer.writeByte(Math.floor((me[5][1] * 256) / 360));
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} else {
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writer.writeByte(0x1F);
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writer.writeInt(me[0]);
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writer.writeByte(-relX);
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writer.writeByte(relY);
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writer.writeByte(-relZ);
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}*/
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/*for (let user of users) {
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if (user[0] == me[0]) continue;
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user[1].write(writer.buffer);
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}*/
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me[7] = true;
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me[4][0] = x;
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me[4][1] = y;
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me[4][2] = z;
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|
|
|
}
|
|
|
|
|
|
|
|
function playerLook(reader = new myman.Reader, me) {
|
|
|
|
const yaw = reader.readFloat();
|
|
|
|
const pitch = reader.readFloat();
|
2021-08-10 00:40:30 +01:00
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|
|
}
|
|
|
|
|
|
|
|
// Write
|
|
|
|
|
|
|
|
function preChunk(socket, x, y, load = false) {
|
|
|
|
const writer = new myman.Writer();
|
|
|
|
|
|
|
|
writer.writeByte(0x32);
|
|
|
|
writer.writeInt(x);
|
|
|
|
writer.writeInt(y);
|
|
|
|
writer.writeBool(load);
|
|
|
|
|
|
|
|
socket.write(writer.buffer);
|
|
|
|
}
|
|
|
|
|
2021-08-10 08:28:28 +01:00
|
|
|
function writeChunk(socket) {
|
2021-08-10 00:40:30 +01:00
|
|
|
const writer = new myman.Writer();
|
|
|
|
|
|
|
|
writer.writeByte(0x33); // ID
|
2021-08-10 08:28:28 +01:00
|
|
|
|
|
|
|
const chank = new chunk(0, 0);
|
|
|
|
|
|
|
|
const buf = Buffer.alloc((15 * 127 * 15 * 5) / 2);
|
|
|
|
|
|
|
|
const defl = deflateSync(chank.getChunkData(0, 0, 0, 15, 127, 15), {level:-1});
|
|
|
|
|
2021-08-10 00:40:30 +01:00
|
|
|
writer.writeInt(0); // Chunk X
|
|
|
|
writer.writeShort(0); // Chunk Y
|
2021-08-10 08:28:28 +01:00
|
|
|
writer.writeInt(0); // Chunk Z
|
|
|
|
writer.writeByte(15); // Chunk Size X
|
|
|
|
writer.writeByte(127); // Chunk Size Y
|
|
|
|
writer.writeByte(15); // Chunk Size Z
|
|
|
|
writer.writeInt(defl.length); // Compressed size
|
|
|
|
console.log(defl.length);
|
|
|
|
console.log(defl.toString());
|
|
|
|
for (let i = 0; i < defl.length; i++) {
|
|
|
|
writer.writeByte(defl[i] - 128); // Compressed data
|
|
|
|
}
|
|
|
|
|
2021-08-10 23:21:44 +01:00
|
|
|
socket.write(writer.buffer);
|
|
|
|
}
|
|
|
|
|
|
|
|
function teleportPlayer(socket, x = 0.0, y = 1.6200000047683716, stance = 0.0, z = 0.0, yaw = 0.0, pitch = 0.0) {
|
|
|
|
const writer = new myman.Writer();
|
|
|
|
|
|
|
|
writer.writeByte(0x0D); // Player pos and view direction
|
|
|
|
|
|
|
|
writer.writeDouble(x);
|
|
|
|
writer.writeDouble(stance);
|
|
|
|
writer.writeDouble(y);
|
|
|
|
writer.writeDouble(z);
|
|
|
|
writer.writeFloat(yaw);
|
|
|
|
writer.writeFloat(pitch);
|
|
|
|
writer.writeBool(false);
|
|
|
|
|
2021-08-10 08:28:28 +01:00
|
|
|
socket.write(writer.buffer);
|
2021-08-10 00:40:30 +01:00
|
|
|
}
|