Start repo, claude & kimi still vibing tho

lib/odinsea/constants/game.ex

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+defmodule Odinsea.Constants.Game do
+  @moduledoc """
+  Game constants ported from Java GameConstants.
+  These define gameplay mechanics, limits, and rates.
+  """
+
+  # Character limits
+  @max_level 250
+  @max_ap 999
+  @max_hp_mp 999_999
+  @base_max_hp 50
+  @base_max_mp 50
+
+  # Inventory limits
+  @max_inventory_slots 128
+  @equip_slots 96
+  @use_slots 96
+  @setup_slots 96
+  @etc_slots 96
+  @cash_slots 96
+
+  # Meso limits
+  @max_meso 9_999_999_999
+  @max_storage_meso 9_999_999_999
+
+  # Guild limits
+  @max_guild_name_length 12
+  @max_guild_members 100
+
+  # Party limits
+  @max_party_members 6
+  @max_expedition_members 30
+
+  # GMS specific flag
+  @gms true
+
+  @doc """
+  Returns the maximum character level.
+  """
+  def max_level, do: @max_level
+
+  @doc """
+  Returns the maximum AP.
+  """
+  def max_ap, do: @max_ap
+
+  @doc """
+  Returns the maximum HP/MP.
+  """
+  def max_hp_mp, do: @max_hp_mp
+
+  @doc """
+  Returns the base max HP for new characters.
+  """
+  def base_max_hp, do: @base_max_hp
+
+  @doc """
+  Returns the base max MP for new characters.
+  """
+  def base_max_mp, do: @base_max_mp
+
+  @doc """
+  Returns the max inventory slots per type.
+  """
+  def max_inventory_slots, do: @max_inventory_slots
+
+  def equip_slots, do: @equip_slots
+  def use_slots, do: @use_slots
+  def setup_slots, do: @setup_slots
+  def etc_slots, do: @etc_slots
+  def cash_slots, do: @cash_slots
+
+  @doc """
+  Returns the max meso a character can hold.
+  """
+  def max_meso, do: @max_meso
+
+  @doc """
+  Returns the max meso in storage.
+  """
+  def max_storage_meso, do: @max_storage_meso
+
+  @doc """
+  Returns true if this is a GMS server.
+  """
+  def gms?, do: @gms
+
+  @doc """
+  Returns the rates from configuration.
+  """
+  def rates do
+    Application.get_env(:odinsea, :rates, [])
+  end
+
+  @doc """
+  Returns the EXP rate.
+  """
+  def exp_rate do
+    rates()[:exp] || 1
+  end
+
+  @doc """
+  Returns the meso rate.
+  """
+  def meso_rate do
+    rates()[:meso] || 1
+  end
+
+  @doc """
+  Returns the drop rate.
+  """
+  def drop_rate do
+    rates()[:drop] || 1
+  end
+
+  # Job classification helpers
+
+  @doc """
+  Returns true if the job is a beginner job.
+  """
+  def beginner?(job), do: div(job, 1000) == 0 && rem(job, 100) == 0
+
+  @doc """
+  Returns true if the job is a warrior class.
+  """
+  def warrior?(job), do: div(job, 100) == 1
+
+  @doc """
+  Returns true if the job is a magician class.
+  """
+  def magician?(job), do: div(job, 100) == 2
+
+  @doc """
+  Returns true if the job is a bowman class.
+  """
+  def bowman?(job), do: div(job, 100) == 3
+
+  @doc """
+  Returns true if the job is a thief class.
+  """
+  def thief?(job), do: div(job, 100) == 4
+
+  @doc """
+  Returns true if the job is a pirate class.
+  """
+  def pirate?(job), do: div(job, 100) == 5 || div(job, 100) == 51 || div(job, 100) == 52
+
+  @doc """
+  Returns true if the job is a resistance class.
+  """
+  def resistance?(job), do: div(job, 1000) == 3
+
+  @doc """
+  Returns true if the job is a cygnus class.
+  """
+  def cygnus?(job), do: div(job, 1000) == 1
+
+  @doc """
+  Returns true if the job is an aran.
+  """
+  def aran?(job), do: div(job, 100) == 21
+
+  @doc """
+  Returns true if the job is an evan.
+  """
+  def evan?(job), do: div(job, 100) == 22 || job == 2001
+
+  @doc """
+  Returns the job name for a given job ID.
+  """
+  def job_name(job) do
+    case job do
+      0 -> "Beginner"
+      100 -> "Warrior"
+      110 -> "Fighter"
+      120 -> "Page"
+      130 -> "Spearman"
+      111 -> "Crusader"
+      121 -> "Knight"
+      131 -> "Dragon Knight"
+      112 -> "Hero"
+      122 -> "Paladin"
+      132 -> "Dark Knight"
+      200 -> "Magician"
+      210 -> "Wizard (F/P)"
+      220 -> "Wizard (I/L)"
+      230 -> "Cleric"
+      211 -> "Mage (F/P)"
+      221 -> "Mage (I/L)"
+      231 -> "Bishop"
+      212 -> "Arch Mage (F/P)"
+      222 -> "Arch Mage (I/L)"
+      232 -> "Arch Mage"
+      300 -> "Bowman"
+      310 -> "Hunter"
+      320 -> "Crossbowman"
+      311 -> "Ranger"
+      321 -> "Sniper"
+      312 -> "Bowmaster"
+      322 -> "Marksman"
+      400 -> "Thief"
+      410 -> "Assassin"
+      420 -> "Bandit"
+      411 -> "Hermit"
+      421 -> "Chief Bandit"
+      412 -> "Night Lord"
+      422 -> "Shadower"
+      500 -> "Pirate"
+      510 -> "Brawler"
+      520 -> "Gunslinger"
+      511 -> "Marauder"
+      521 -> "Outlaw"
+      512 -> "Buccaneer"
+      522 -> "Corsair"
+      1000 -> "Noblesse"
+      1100 -> "Dawn Warrior"
+      1200 -> "Blaze Wizard"
+      1300 -> "Wind Archer"
+      1400 -> "Night Walker"
+      1500 -> "Thunder Breaker"
+      2000 -> "Legend"
+      2100 -> "Aran"
+      2001 -> "Evan"
+      2002 -> "Mercedes"
+      _ -> "Unknown"
+    end
+  end
+end

lib/odinsea/constants/server.ex

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+defmodule Odinsea.Constants.Server do
+  @moduledoc """
+  Server constants ported from Java ServerConstants.
+  These define the MapleStory client version and protocol details.
+  """
+
+  # MapleStory Client Version (GMS v342)
+  @maple_version 342
+  @maple_patch "1"
+  @client_version 99
+
+  # Protocol constants
+  @packet_header_size 4
+  @aes_key_size 32
+  @block_size 1460
+
+  # RSA Keys (from ServerConstants.java)
+  @pub_key ""
+  @maplogin_default "default"
+  @maplogin_custom "custom"
+
+  # Packet sequence constants
+  @iv_length 4
+  @short_size 2
+  @int_size 4
+  @long_size 8
+
+  @doc """
+  Returns the MapleStory client version.
+  """
+  def maple_version, do: @maple_version
+
+  @doc """
+  Returns the MapleStory patch version.
+  """
+  def maple_patch, do: @maple_patch
+
+  @doc """
+  Returns the full client version string.
+  """
+  def client_version, do: @client_version
+
+  @doc """
+  Returns the packet header size in bytes.
+  """
+  def packet_header_size, do: @packet_header_size
+
+  @doc """
+  Returns the AES key size in bytes.
+  """
+  def aes_key_size, do: @aes_key_size
+
+  @doc """
+  Returns the network block size.
+  """
+  def block_size, do: @block_size
+
+  @doc """
+  Returns the RSA public key.
+  """
+  def pub_key do
+    Application.get_env(:odinsea, :rsa_pub_key, @pub_key)
+  end
+
+  @doc """
+  Returns the default login background.
+  """
+  def maplogin_default, do: @maplogin_default
+
+  @doc """
+  Returns the custom login background.
+  """
+  def maplogin_custom, do: @maplogin_custom
+
+  @doc """
+  Returns the IV (initialization vector) length.
+  """
+  def iv_length, do: @iv_length
+
+  @doc """
+  Returns the size of a short in bytes.
+  """
+  def short_size, do: @short_size
+
+  @doc """
+  Returns the size of an int in bytes.
+  """
+  def int_size, do: @int_size
+
+  @doc """
+  Returns the size of a long in bytes.
+  """
+  def long_size, do: @long_size
+
+  @doc """
+  Returns server info from configuration.
+  """
+  def server_info do
+    Application.get_env(:odinsea, :server, [])
+  end
+
+  @doc """
+  Returns the server name.
+  """
+  def server_name do
+    server_info()[:name] || "Luna"
+  end
+
+  @doc """
+  Returns the server host.
+  """
+  def server_host do
+    server_info()[:host] || "127.0.0.1"
+  end
+
+  @doc """
+  Returns the server revision.
+  """
+  def server_revision do
+    server_info()[:revision] || 1
+  end
+end