Nodecraft

Node.JS Minecraft server

Start demo server

start server

npm run server

start explosion routine

npm run explosion

Simple server without magic

Draw simple world based on banner file

const fs = require('fs');
const Game = require('../index.js');
 
const game = new Game();
const land = game.getLand();
const server = game.getServer();
 
// initialize chunks
land.forEachChunk(chunk => {
    for (let x = 0; x < 16; x++)
        for (let z = 0; z < 16; z++) {
            chunk.setType(x, 0, z, 'grass');
            chunk.setBiome(x, z, 'desert');
            for (let y = 0; y < 255; y++) {
                chunk.setLightSky(x, y, z, 15);
            }
        }
});
 
//  init banner
const banner = fs.readFileSync(__dirname + '/banner.txt').toString().split('\n').filter(Boolean);
for (let x = 0; x < banner.length; x++) {
    for (let z = 0; z < banner[x].length; z++) {
        if (banner[x][z] === '#') {
            land.setType(x, 1, z, 'brick_block');
            land.setLightBlock(x, 1, z, 15);
            land.setLightBlock(x, 2, z, 15);
        }
    }
}
 
server.on('packet:handshake', clientID => {
        server
            .login(clientID, {
                eid: 0,
                level_type: 'flat',
                game_mode: 1,
                dimension: 0,
                difficalty: 0,
                magic: 0,
                max_player: 25
            })
            .spawn_position(clientID, {
                x: 0,
                y: 30,
                z: 0
            })
            .player_position_and_look(clientID, {
                x: 0,
                stance: 94.62,
                y: 30,
                z: 0,
                yaw: 0,
                pitch: 0,
                on_ground: 1
            });
    })
    .start(25565);

Explosion routine

Routine for create explosion effect

const v8 = require('v8');
const WebSocket = require('ws');
 
const URL = 'ws://localhost:25566';
 
function connect(url) {
    return new Promise(resolve => {
        const ws = new WebSocket(url);
        ws
            .on('open', _ => resolve(ws))
            .on('error', _ => setTimeout(_ => connect(url), 1000));
    });
}
 
connect(URL)
    .then(ws => {
        ws.on('message', message => {
            const {clientID,packet,direction} = v8.deserialize(message);
            if (packet.name === 'keepalive') {
                ws.send(
                    v8.serialize({
                        clientID,
                        packet: {
                            pid: 60,
                            name: 'explosion',
                            x: 0,
                            y: 20,
                            z: 0,
                            radius: 3,
                            records: [
                                [-1, -1, -1],
                                [0, 0, 0],
                                [1, 1, 1]
                            ],
                            player_motion_x: 0,
                            player_motion_y: 0,
                            player_motion_z: 0
                        }
                    })
                );
            }
        });
    });