Reddit Builds a House (flying-squid pseudo code)

redditbuilds.js

module.exports = {
  player: playerInject,
  server: serverInject,
  disable: disable
}

function playerInject(serv, player, self) {
  var pData = player.plugin(self); // Player Data

  pData.blocklist = [];
  pData.brokenlist = [];
  pData.placed = false;
  player.world = self.redditworld;

  player.on('login', () => { // Say hey to the user!
    player.chat('Welcome to "Reddit Builds a House"!');
    player.chat('Place and destroy blocks as you need to (it will not affect the world)!');
    player.chat('Use /ready when you\'re ready or /reset if you want to, well... reset.');
    player.chat('Use /info for more crazy info about how this server was made (Not Bukkit or Spigot!)');
  });

  player.on('place_block_cancel', async ({id, damage, block, position, reference, cancel}) => {
    if (player.world != self.redditworld) return; // Only in reddit world
    cancel(); // Don't do default action of sending to all users and saving to world
    var list = pData.blocklist; // List of loally placed blocks
    list.push({ id: id, damage: damage, position: position}); // Add block to list
    if (pData.ready) { // Unready if readied
      pData.ready = false;
      player.chat('Unready!');
    }
    if (list.length > 5) { // Remove the 6th oldest block (only 5 shown to user at a time)
      var remove = list.splice(0, 1);
      var id = await self.redditworld.getBlockType(position);
      var data = await self.redditworld.getBlockData(position);
      player.sendBlock(position, id, data);
    }
  }

  player.on('block_dig_cancel', async ({position,status,cancel}) => {
    if (player.world != self.redditworld) return;
    if (status == 0 && player.gameMode == 1) { // Everybody is in creative so this immediately digs
      cancel();
      var list = pData.brokenlist; // List of locally destroyed blocks
      list.push(position);
    }
  });

  player.on('disconnect', () => {
    if (pData.placed) {
      player.ban('Thanks for stopping by! Check out the house on /r/Mineraft soon!');
    }
  });
  
  player.commands.add({ // Resets all block so that player is in sync with the server (brokenlist and blocklist)
    base: 'reset',
    info: 'Reset all blocks',
    usage: '/reset',
    async action() {
      var resetlist = pData.blocklist.map((b) => b.position)
                        .concat(pData.brokenlist);
      for (var r in resetlist) {
        var id = await self.redditworld.getBlockType(resetlist[r]);
        var data = await self.redditworld.getBlockData(resetlist[r]);
        player.sendBlock(resetlist[r], id, data);
      }
      pData.blocklist = [];
      player.chat('Cleared blocks!');
      if (pData.ready) {
        player.chat('Unready!');
        pData.ready = false;
      }
    }
  });
  
  player.commands.add({ // Removes all local-blocks except the latest block
    base: 'ready',
    info: 'Complete block placement',
    usage: '/ready',
    async action() {
      if (!pData.blocklist || !pData.blocklist.length) {
        player.chat('You must place a block in order to complete!');
        return;
      }
      var resetlist = pData.blocklist.map((b) => b.position).filter((a, index) => index != pData.blocklist.length - 1)
                        .concat(pData.brokenlist); // Get everything EXCEPT the one block they're going to place
      for (var r in resetlist) {
        var id = await self.redditworld.getBlockType(resetlist[r]);
        var data = await self.redditworld.getBlockData(resetlist[r]);
        player.sendBlock(resetlist[r], id, data);
      }
      var list = pData.blocklist;
      if (list.length > 1) list.splice(0, list.length - 2);
      pData.breaklist = [];
      pData.ready = true;
      var choose = list[0];
      player.chat('Are you use you want to place your block ' + choose.id + ':' + choose.data + ' at ' + choose.position.toString() + '?');
      player.chat('Type "/confirm" to confirm.');
      plaer.chat('Place another block if you would like to switch your choice');
    }
  });
  
  player.commands.add({ // Confirms the latest block, places it
    base: 'confirm',
    info: 'Confirm your block placement',
    usage: '/confirm',
    action() {
      if (!pData.ready) {
        player.chat('First use "/ready" to check your block.');
        return;
      }
      var choose = pData.blocklist[0];
      serv.setBlock(self.redditworld, choose.position, choose.id, choose.data);
      player.chat('Your block has been placed! You will be banned in 60 seconds or when you leave');
      pData.placed = true;
      setTimeout(() => {
        if (!player.connected) return;
        else player.ban('Thanks for stopping by! Check out the house on /r/Mineraft soon!');
      });
    }
  }

  player.commands.add({ // Info about this amazing server/plugin!
    base: 'info',
    info: 'Get info about this server',
    usage: '/info',
    action() {
      player.chat('This server was made in node.js (a form of server-side javascript).');
      player.chat('Everything is built from the packets up, meaning if runs faster and more efficiently than java servers.');
      player.chat('You can easily make your own plugins or contribute to the project at:');
      player.chat('https://github.com/mhsjlw/flying-squid');
    }
  });
}

function serverInject(serv, self) { // Add world and pregen a bit
  self.redditworld = new World(someSuperflatGeneration({}));
  serv.pregenWorld(self.redditworld);
}

function disable(self) { // player.self(plugin) gets removed as well as all listeners automagically
  serv.playersInWorld(self.redditworld).forEach((p) => p.changeWorld(serv.overworld));
  delete self.redditworld;
}