Begin implementing login (play)

lib/servers/configuration.ex

@@ -255,6 +255,11 @@ defmodule Amethyst.Server.Configuration do
   end
   # Acknowledge Finish Configuration https://wiki.vg/Protocol#Acknowledge_Finish_Configuration
   def handle({:acknowledge_finish_configuration}, client, state) do
+    # TODO: All of this stuff should obviously not be hardcoded here
+    Amethyst.Server.Play.transmit({:login,
+      0, false, ["minecraft:overworld"], 0, 16, 16, false, true, true, 0,
+      "minecraft:overworld", <<0::64>>, :spectator, nil, false, true, nil, 0, false
+    }, client)
     Amethyst.Server.Play.serve(client, state)
   end
   # Serverbound Plugin Message https://wiki.vg/Protocol#Serverbound_Plugin_Message_(configuration)

lib/servers/play.ex

@@ -45,6 +45,7 @@ defmodule Amethyst.Server.Play do
     dim_type, dim_name, hashed_seed, gamemode, prev_gm,
     is_debug, is_flat, death_loc, portal_cooldown, enforce_chat}) do
       # TODO: this singlehandedly made me regret not making the write API better, please rework :(
+      Write.varint(0x2B) <>
       <<eid::big-signed-32>> <> if(hardcore, do: <<1::big-8>>, else: <<0::big-8>>) <>
       Write.varint(length(dimensions)) <> Enum.reduce(dimensions, "", fn dim, acc -> acc <> Write.string(dim) end) <>
       Write.varint(max_players) <> Write.varint(view_distance) <> Write.varint(simulation_distance) <> if(reduce_debug, do: <<1::big-8>>, else: <<0::big-8>>) <>