294 lines
7.8 KiB
Elixir
294 lines
7.8 KiB
Elixir
defmodule Odinsea.Channel.Client do
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@moduledoc """
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Client connection handler for game channel servers.
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Manages the game session state.
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"""
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use GenServer, restart: :temporary
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require Logger
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alias Odinsea.Net.Packet.In
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alias Odinsea.Net.Opcodes
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alias Odinsea.Channel.Handler
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defstruct [:socket, :ip, :channel_id, :state, :character_id]
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def start_link({socket, channel_id}) do
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GenServer.start_link(__MODULE__, {socket, channel_id})
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end
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@impl true
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def init({socket, channel_id}) do
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{:ok, {ip, _port}} = :inet.peername(socket)
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ip_string = format_ip(ip)
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Logger.info("Channel #{channel_id} client connected from #{ip_string}")
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state = %__MODULE__{
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socket: socket,
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ip: ip_string,
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channel_id: channel_id,
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state: :connected,
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character_id: nil
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}
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send(self(), :receive)
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{:ok, state}
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end
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@impl true
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def handle_info(:receive, %{socket: socket} = state) do
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case :gen_tcp.recv(socket, 0, 30_000) do
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{:ok, data} ->
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new_state = handle_packet(data, state)
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send(self(), :receive)
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{:noreply, new_state}
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{:error, :closed} ->
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Logger.info("Channel #{state.channel_id} client disconnected: #{state.ip}")
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{:stop, :normal, state}
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{:error, reason} ->
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Logger.warning("Channel client error: #{inspect(reason)}")
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{:stop, :normal, state}
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end
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end
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@impl true
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def terminate(_reason, state) do
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if state.socket do
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:gen_tcp.close(state.socket)
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end
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:ok
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end
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defp handle_packet(data, state) do
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packet = In.new(data)
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case In.decode_short(packet) do
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{opcode, packet} ->
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Logger.debug("Channel #{state.channel_id} packet: opcode=0x#{Integer.to_string(opcode, 16)}")
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dispatch_packet(opcode, packet, state)
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:error ->
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Logger.warning("Failed to read packet opcode")
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state
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end
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end
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defp dispatch_packet(opcode, packet, state) do
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# Define opcodes for matching
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cp_general_chat = Opcodes.cp_general_chat()
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cp_party_chat = Opcodes.cp_party_chat()
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cp_whisper = Opcodes.cp_whisper()
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cp_move_player = Opcodes.cp_move_player()
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cp_change_map = Opcodes.cp_change_map()
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cp_change_keymap = Opcodes.cp_change_keymap()
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cp_skill_macro = Opcodes.cp_skill_macro()
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cp_close_range_attack = Opcodes.cp_close_range_attack()
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cp_ranged_attack = Opcodes.cp_ranged_attack()
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cp_magic_attack = Opcodes.cp_magic_attack()
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cp_take_damage = Opcodes.cp_take_damage()
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# Inventory opcodes
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cp_item_move = Opcodes.cp_item_move()
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cp_item_sort = Opcodes.cp_item_sort()
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cp_item_gather = Opcodes.cp_item_gather()
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cp_use_item = Opcodes.cp_use_item()
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cp_use_return_scroll = Opcodes.cp_use_return_scroll()
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cp_use_scroll = Opcodes.cp_use_upgrade_scroll()
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cp_use_cash_item = Opcodes.cp_use_cash_item()
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# NPC opcodes
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cp_npc_move = Opcodes.cp_npc_move()
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cp_npc_talk = Opcodes.cp_npc_talk()
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cp_npc_talk_more = Opcodes.cp_npc_talk_more()
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cp_npc_shop = Opcodes.cp_npc_shop()
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cp_storage = Opcodes.cp_storage()
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cp_quest_action = Opcodes.cp_quest_action()
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cp_repair = Opcodes.cp_repair()
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cp_repair_all = Opcodes.cp_repair_all()
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cp_update_quest = Opcodes.cp_update_quest()
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cp_use_item_quest = Opcodes.cp_use_item_quest()
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cp_public_npc = Opcodes.cp_public_npc()
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cp_use_scripted_npc_item = Opcodes.cp_use_scripted_npc_item()
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case opcode do
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# Chat handlers
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^cp_general_chat ->
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case Handler.Chat.handle_general_chat(packet, state) do
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{:ok, new_state} -> new_state
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_ -> state
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end
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^cp_party_chat ->
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case Handler.Chat.handle_party_chat(packet, state) do
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{:ok, new_state} -> new_state
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_ -> state
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end
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^cp_whisper ->
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case Handler.Chat.handle_whisper(packet, state) do
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{:ok, new_state} -> new_state
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_ -> state
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end
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# Player movement and actions
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^cp_move_player ->
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case Handler.Player.handle_move_player(packet, state) do
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{:ok, new_state} -> new_state
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_ -> state
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end
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^cp_change_map ->
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case Handler.Player.handle_change_map(packet, state) do
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{:ok, new_state} -> new_state
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_ -> state
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end
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^cp_change_keymap ->
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case Handler.Player.handle_change_keymap(packet, state) do
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{:ok, new_state} -> new_state
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_ -> state
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end
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^cp_skill_macro ->
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case Handler.Player.handle_change_skill_macro(packet, state) do
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{:ok, new_state} -> new_state
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_ -> state
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end
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# Combat handlers (stubs for now)
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^cp_close_range_attack ->
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case Handler.Player.handle_close_range_attack(packet, state) do
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{:ok, new_state} -> new_state
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_ -> state
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end
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^cp_ranged_attack ->
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case Handler.Player.handle_ranged_attack(packet, state) do
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{:ok, new_state} -> new_state
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_ -> state
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end
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^cp_magic_attack ->
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case Handler.Player.handle_magic_attack(packet, state) do
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{:ok, new_state} -> new_state
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_ -> state
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end
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^cp_take_damage ->
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case Handler.Player.handle_take_damage(packet, state) do
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{:ok, new_state} -> new_state
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_ -> state
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end
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# Inventory handlers
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^cp_item_move ->
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case Handler.Inventory.handle_item_move(packet, state) do
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{:ok, new_state} -> new_state
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_ -> state
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end
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^cp_item_sort ->
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case Handler.Inventory.handle_item_sort(packet, state) do
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{:ok, new_state} -> new_state
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_ -> state
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end
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^cp_item_gather ->
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case Handler.Inventory.handle_item_gather(packet, state) do
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{:ok, new_state} -> new_state
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_ -> state
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end
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^cp_use_item ->
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case Handler.Inventory.handle_use_item(packet, state) do
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{:ok, new_state} -> new_state
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_ -> state
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end
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^cp_use_return_scroll ->
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case Handler.Inventory.handle_use_return_scroll(packet, state) do
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{:ok, new_state} -> new_state
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_ -> state
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end
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^cp_use_scroll ->
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case Handler.Inventory.handle_use_scroll(packet, state) do
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{:ok, new_state} -> new_state
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_ -> state
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end
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^cp_use_cash_item ->
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case Handler.Inventory.handle_use_cash_item(packet, state) do
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{:ok, new_state} -> new_state
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_ -> state
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end
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# NPC handlers
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^cp_npc_move ->
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Handler.NPC.handle_npc_move(packet, self())
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state
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^cp_npc_talk ->
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Handler.NPC.handle_npc_talk(packet, self())
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state
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^cp_npc_talk_more ->
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Handler.NPC.handle_npc_more_talk(packet, self())
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state
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^cp_npc_shop ->
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Handler.NPC.handle_npc_shop(packet, self())
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state
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^cp_storage ->
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Handler.NPC.handle_storage(packet, self())
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state
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^cp_quest_action ->
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Handler.NPC.handle_quest_action(packet, self())
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state
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^cp_repair ->
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Handler.NPC.handle_repair(packet, self())
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state
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^cp_repair_all ->
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Handler.NPC.handle_repair_all(self())
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state
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^cp_update_quest ->
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Handler.NPC.handle_update_quest(packet, self())
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state
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^cp_use_item_quest ->
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Handler.NPC.handle_use_item_quest(packet, self())
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state
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^cp_public_npc ->
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Handler.NPC.handle_public_npc(packet, self())
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state
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^cp_use_scripted_npc_item ->
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Handler.NPC.handle_use_scripted_npc_item(packet, self())
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state
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_ ->
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Logger.debug("Unhandled channel opcode: 0x#{Integer.to_string(opcode, 16)}")
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state
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end
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end
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defp format_ip({a, b, c, d}) do
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"#{a}.#{b}.#{c}.#{d}"
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end
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defp format_ip({a, b, c, d, e, f, g, h}) do
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"#{a}:#{b}:#{c}:#{d}:#{e}:#{f}:#{g}:#{h}"
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end
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end
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