Start repo, claude & kimi still vibing tho
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301
lib/odinsea/channel/packets.ex
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301
lib/odinsea/channel/packets.ex
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defmodule Odinsea.Channel.Packets do
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@moduledoc """
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Channel server packet builders.
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Ported from Java tools.packet.MaplePacketCreator (relevant parts)
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"""
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alias Odinsea.Net.Packet.Out
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alias Odinsea.Net.Opcodes
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@doc """
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Sends character information on login.
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"""
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def get_char_info(character, restored_buffs \\ []) do
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# TODO: Full character encoding
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# For now, send minimal info
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Out.new(Opcodes.lp_set_field())
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|> Out.encode_int(character.id)
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|> Out.encode_byte(0) # Channel
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|> Out.encode_byte(1) # Admin byte
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|> Out.encode_byte(1) # Enabled
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|> Out.encode_int(character.map)
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|> Out.encode_byte(character.spawnpoint)
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|> Out.encode_int(character.hp)
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|> Out.to_data()
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end
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@doc """
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Enables cash shop access.
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"""
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def enable_cash_shop do
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Out.new(Opcodes.lp_set_cash_shop_opened())
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|> Out.encode_byte(1)
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|> Out.to_data()
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end
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@doc """
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Server blocked message.
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"""
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def server_blocked(reason) do
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Out.new(Opcodes.lp_server_blocked())
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|> Out.encode_byte(reason)
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|> Out.to_data()
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end
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@doc """
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Enable client actions.
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"""
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def enable_actions do
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Out.new(Opcodes.lp_enable_action())
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|> Out.encode_byte(0)
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|> Out.to_data()
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end
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@doc """
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Channel change command.
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"""
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def get_channel_change(ip, port, character_id) do
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ip_parts = parse_ip(ip)
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Out.new(Opcodes.lp_migrate_command())
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|> Out.encode_short(0) # Not cash shop
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|> encode_ip(ip_parts)
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|> Out.encode_short(port)
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|> Out.encode_int(character_id)
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|> Out.encode_bytes(<<0, 0>>)
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|> Out.to_data()
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end
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defp parse_ip(host) when is_binary(host) do
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case String.split(host, ".") do
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[a, b, c, d] ->
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{
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String.to_integer(a),
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String.to_integer(b),
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String.to_integer(c),
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String.to_integer(d)
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}
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_ ->
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{127, 0, 0, 1}
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end
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end
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defp encode_ip(packet, {a, b, c, d}) do
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packet
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|> Out.encode_byte(a)
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|> Out.encode_byte(b)
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|> Out.encode_byte(c)
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|> Out.encode_byte(d)
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end
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@doc """
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Spawns a player on the map.
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Minimal implementation - will expand with equipment, buffs, etc.
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"""
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def spawn_player(oid, character_state) do
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# Reference: MaplePacketCreator.spawnPlayerMapobject()
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# This is a minimal implementation - full version needs equipment, buffs, etc.
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Out.new(Opcodes.lp_spawn_player())
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|> Out.encode_int(oid)
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# Damage skin (custom client feature)
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# |> Out.encode_int(0)
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|> Out.encode_byte(character_state.level)
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|> Out.encode_string(character_state.name)
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# Ultimate Explorer name (empty for now)
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|> Out.encode_string("")
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# Guild info (no guild for now)
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|> Out.encode_int(0)
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|> Out.encode_int(0)
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# Buff mask (no buffs for now - TODO: implement buffs)
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# For now, send minimal buff data
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|> encode_buff_mask()
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# Foreign buff end
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|> Out.encode_short(0)
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# ITEM_EFFECT
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|> Out.encode_int(0)
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# CHAIR
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|> Out.encode_int(0)
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# Position
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|> Out.encode_short(character_state.position.x)
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|> Out.encode_short(character_state.position.y)
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|> Out.encode_byte(character_state.position.stance)
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# Foothold
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|> Out.encode_short(character_state.position.foothold)
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# Appearance (gender, skin, face, hair)
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|> Out.encode_byte(character_state.gender)
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|> Out.encode_byte(character_state.skin_color)
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|> Out.encode_int(character_state.face)
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# Mega - shown in rankings
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|> Out.encode_byte(0)
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# Equipment (TODO: implement proper equipment encoding)
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|> encode_appearance_minimal(character_state)
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# Driver ID / passenger ID (for mounts)
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|> Out.encode_int(0)
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# Chalkboard text
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|> Out.encode_string("")
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# Ring info (3 ring slots)
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|> Out.encode_int(0)
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|> Out.encode_int(0)
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|> Out.encode_int(0)
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# Marriage ring
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|> Out.encode_int(0)
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# Mount info (no mount for now)
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|> encode_mount_minimal()
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# Player shop (none for now)
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|> Out.encode_byte(0)
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# Admin byte
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|> Out.encode_byte(0)
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# Pet info (no pets for now)
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|> encode_pets_minimal()
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# Taming mob (none)
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|> Out.encode_int(0)
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# Mini game info
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|> Out.encode_byte(0)
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# Chalkboard
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|> Out.encode_byte(0)
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# New year cards
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|> Out.encode_byte(0)
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# Berserk
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|> Out.encode_byte(0)
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|> Out.to_data()
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end
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@doc """
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Removes a player from the map.
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"""
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def remove_player(oid) do
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Out.new(Opcodes.lp_remove_player_from_map())
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|> Out.encode_int(oid)
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|> Out.to_data()
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end
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# ============================================================================
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# Helper Functions for Spawn Encoding
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# ============================================================================
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defp encode_buff_mask(packet) do
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# Buff mask is an array of integers representing active buffs
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# For GMS v342, this is typically 14-16 integers (56-64 bytes)
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# For now, send all zeros (no buffs)
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packet
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|> Out.encode_bytes(<<0::size(14 * 32)-little>>)
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end
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defp encode_appearance_minimal(packet, character) do
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# Equipment encoding:
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# Map of slot -> item_id
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# For minimal implementation, just show hair
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packet
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# Equipped items map (empty for now)
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|> Out.encode_byte(0)
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# Masked items map (empty for now)
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|> Out.encode_byte(0)
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# Weapon (cash weapon)
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|> Out.encode_int(0)
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# Hair
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|> Out.encode_int(character.hair)
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# Ears (12 bit encoding for multiple items)
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|> Out.encode_int(0)
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end
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defp encode_mount_minimal(packet) do
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packet
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|> Out.encode_byte(0)
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# Mount level
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|> Out.encode_byte(1)
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# Mount exp
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|> Out.encode_int(0)
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# Mount fatigue
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|> Out.encode_int(0)
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end
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defp encode_pets_minimal(packet) do
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# 3 pet slots
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packet
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|> Out.encode_byte(0)
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|> Out.encode_byte(0)
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|> Out.encode_byte(0)
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end
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# ============================================================================
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# Chat Packets
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# ============================================================================
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@doc """
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User chat packet.
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Ported from LocalePacket.UserChat()
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Reference: src/tools/packet/LocalePacket.java
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"""
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def user_chat(character_id, message, is_admin \\ false, only_balloon \\ false) do
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Out.new(Opcodes.lp_chattext())
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|> Out.encode_int(character_id)
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|> Out.encode_byte(if is_admin, do: 1, else: 0)
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|> Out.encode_string(message)
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|> Out.encode_byte(if only_balloon, do: 1, else: 0)
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|> Out.to_data()
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end
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@doc """
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Whisper chat packet (received whisper).
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Ported from LocalePacket.WhisperChat()
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"""
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def whisper_received(sender_name, channel, message) do
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Out.new(Opcodes.lp_whisper())
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|> Out.encode_byte(0x12)
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|> Out.encode_string(sender_name)
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|> Out.encode_short(channel - 1)
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|> Out.encode_string(message)
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|> Out.to_data()
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end
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@doc """
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Whisper reply packet (sent whisper status).
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Mode: 1 = success, 0 = failure
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"""
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def whisper_reply(recipient_name, mode) do
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Out.new(Opcodes.lp_whisper())
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|> Out.encode_byte(0x0A)
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|> Out.encode_string(recipient_name)
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|> Out.encode_byte(mode)
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|> Out.to_data()
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end
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@doc """
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Find player reply (player found on channel).
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"""
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def find_player_reply(target_name, channel, is_buddy \\ false) do
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Out.new(Opcodes.lp_whisper())
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|> Out.encode_byte(0x09)
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|> Out.encode_string(target_name)
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|> Out.encode_byte(if is_buddy, do: 0x48, else: 0x01)
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|> Out.encode_byte(channel)
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|> Out.to_data()
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end
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@doc """
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Find player reply with map (player found on same channel).
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"""
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def find_player_with_map(target_name, map_id, is_buddy \\ false) do
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Out.new(Opcodes.lp_whisper())
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|> Out.encode_byte(0x09)
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|> Out.encode_string(target_name)
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|> Out.encode_byte(if is_buddy, do: 0x48, else: 0x01)
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|> Out.encode_int(map_id)
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|> Out.encode_bytes(<<0, 0, 0>>)
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|> Out.to_data()
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end
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@doc """
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Party chat packet.
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Type: 0 = buddy, 1 = party, 2 = guild, 3 = alliance, 4 = expedition
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"""
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def multi_chat(sender_name, message, chat_type) do
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Out.new(Opcodes.lp_multi_chat())
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|> Out.encode_byte(chat_type)
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|> Out.encode_string(sender_name)
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|> Out.encode_string(message)
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|> Out.to_data()
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end
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end
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