Kodi Craft
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91 lines
2.9 KiB
Elixir
91 lines
2.9 KiB
Elixir
# Amethyst - An experimental Minecraft server written in Elixir.
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# Copyright (C) 2024 KodiCraft
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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defmodule Amethyst.Server.Play do
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@moduledoc """
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This module contains the logic for the Play stage of the server.
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"""
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require Logger
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use Amethyst.Server
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alias Amethyst.Minecraft.Read
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alias Amethyst.Minecraft.Write
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@impl true
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def init(state) do
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state
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end
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## DESERIALIZATION
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@impl true
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def deserialize(type, _) do
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raise RuntimeError, "Got unknown packet type #{type}!"
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end
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## SERIALIZATION
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@impl true
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# Login https://wiki.vg/Protocol#Login_(play)
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def serialize({:login, eid, hardcore, dimensions,
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max_players, view_distance, simulation_distance,
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reduce_debug, enable_respawn_screen, limited_crafting,
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dim_type, dim_name, hashed_seed, gamemode, prev_gm,
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is_debug, is_flat, death_loc, portal_cooldown, enforce_chat}) when byte_size(hashed_seed) == 8 do
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# TODO: This is a big unreadable slab of serialization which makes bugs really hard to catch, it needs a proper rework at some point
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Write.varint(0x2B) <>
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Write.int(eid) <>
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Write.bool(hardcore) <>
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Write.varint(length(dimensions)) <>
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Write.list(dimensions, &Write.string/1) <>
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Write.varint(max_players) <>
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Write.varint(view_distance) <>
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Write.varint(simulation_distance) <>
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Write.bool(reduce_debug) <>
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Write.bool(enable_respawn_screen) <>
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Write.bool(limited_crafting) <>
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Write.varint(dim_type) <>
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Write.string(dim_name) <>
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hashed_seed <>
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Write.ubyte(gamemode_id(gamemode)) <>
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Write.byte(gamemode_id(prev_gm)) <>
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Write.bool(is_debug) <>
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Write.bool(is_flat) <>
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if(death_loc == nil, do: Write.bool(false), else: Write.bool(true) <> Write.string(elem(death_loc, 0)) <> Write.position(elem(death_loc, 1))) <>
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Write.varint(portal_cooldown) <>
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Write.bool(enforce_chat)
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end
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def serialize(packet) do
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raise ArgumentError, "Tried serializing unknown packet #{inspect(packet)}"
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end
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## HANDLING
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@impl true
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def handle(tuple, _, state) do
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Logger.error("Unhandled but known packet #{elem(tuple, 0)}")
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{:unhandled, state}
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end
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defp gamemode_id(gm) do
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case gm do
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nil -> -1
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:survival -> 0
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:creative -> 1
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:adventure -> 2
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:spectator -> 3
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end
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end
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end
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