kimi gone wild

lib/odinsea/channel/handler/summon.ex

@@ -0,0 +1,263 @@
+defmodule Odinsea.Channel.Handler.Summon do
+  @moduledoc """
+  Handles summon-related packets (puppet, dragon, summons).
+
+  Ported from: src/handling/channel/handler/SummonHandler.java
+
+  ## Main Handlers
+  - handle_move_dragon/2 - Dragon movement
+  - handle_move_summon/2 - Summon movement  
+  - handle_damage_summon/2 - Summon taking damage
+  - handle_summon_attack/2 - Summon attacking
+  - handle_remove_summon/2 - Remove summon
+  - handle_sub_summon/2 - Summon sub-skill (healing, etc.)
+  - handle_pvp_summon/2 - PVP summon attack
+  """
+
+  require Logger
+
+  alias Odinsea.Net.Packet.In
+  alias Odinsea.Game.{Character, Map}
+
+  # ============================================================================
+  # Dragon Handlers
+  # ============================================================================
+
+  @doc """
+  Handles dragon movement (CP_MOVE_DRAGON / 0xE7).
+
+  Reference: SummonHandler.MoveDragon()
+  """
+  def handle_move_dragon(packet, client_pid) do
+    # Skip 8 bytes (position data)
+    _ = In.decode_long(packet)
+    
+    # Parse movement data
+    # TODO: Implement full movement parsing
+    
+    case Character.get_state_by_client(client_pid) do
+      {:ok, character_id, char_state} ->
+        # TODO: Validate dragon exists for character
+        # TODO: Update dragon position
+        # TODO: Broadcast movement to other players
+        
+        Logger.debug("Dragon move: character #{character_id}")
+        :ok
+
+      {:error, reason} ->
+        Logger.warn("Failed to handle dragon move: #{inspect(reason)}")
+    end
+  end
+
+  # ============================================================================
+  # Summon Handlers
+  # ============================================================================
+
+  @doc """
+  Handles summon movement (CP_MOVE_SUMMON / 0xDF).
+
+  Reference: SummonHandler.MoveSummon()
+  """
+  def handle_move_summon(packet, client_pid) do
+    summon_oid = In.decode_int(packet)
+    
+    # Skip 8 bytes (start position)
+    _ = In.decode_long(packet)
+    
+    # Parse movement data
+    # TODO: Implement movement parsing
+    
+    case Character.get_state_by_client(client_pid) do
+      {:ok, character_id, char_state} ->
+        # TODO: Validate summon exists and belongs to character
+        # TODO: Check summon movement type (skip if STATIONARY)
+        # TODO: Update summon position
+        # TODO: Broadcast movement to other players
+        
+        Logger.debug("Summon move: OID #{summon_oid}, character #{character_id}")
+        :ok
+
+      {:error, reason} ->
+        Logger.warn("Failed to handle summon move: #{inspect(reason)}")
+    end
+  end
+
+  @doc """
+  Handles summon taking damage (CP_DAMAGE_SUMMON / 0xE1).
+
+  Puppet summons can take damage and be destroyed.
+
+  Reference: SummonHandler.DamageSummon()
+  """
+  def handle_damage_summon(packet, client_pid) do
+    unk_byte = In.decode_byte(packet)
+    damage = In.decode_int(packet)
+    monster_id_from = In.decode_int(packet)
+    
+    case Character.get_state_by_client(client_pid) do
+      {:ok, character_id, char_state} ->
+        # TODO: Find puppet summon for character
+        # TODO: Apply damage to summon HP
+        # TODO: Broadcast damage packet
+        # TODO: Remove summon if HP <= 0
+        
+        Logger.debug("Summon damage: #{damage} from mob #{monster_id_from}, unk #{unk_byte}, character #{character_id}")
+        :ok
+
+      {:error, reason} ->
+        Logger.warn("Failed to handle summon damage: #{inspect(reason)}")
+    end
+  end
+
+  @doc """
+  Handles summon attack (CP_SUMMON_ATTACK / 0xE0).
+
+  Summons attack monsters with their skills.
+
+  Reference: SummonHandler.SummonAttack()
+  """
+  def handle_summon_attack(packet, client_pid) do
+    summon_oid = In.decode_int(packet)
+    
+    # Skip bytes based on game version
+    _ = In.decode_long(packet)  # tick or unknown
+    
+    tick = In.decode_int(packet)
+    _ = In.decode_long(packet)  # skip
+    
+    animation = In.decode_byte(packet)
+    _ = In.decode_long(packet)  # CRC32 skip
+    
+    mob_count = In.decode_byte(packet)
+    
+    # Parse attack targets
+    targets = parse_summon_targets(packet, mob_count)
+    
+    case Character.get_state_by_client(client_pid) do
+      {:ok, character_id, char_state} ->
+        # TODO: Validate summon exists and belongs to character
+        # TODO: Check attack frequency (anti-cheat)
+        # TODO: Calculate damage for each target
+        # TODO: Apply damage to monsters
+        # TODO: Broadcast attack packet
+        # TODO: Remove summon if not multi-attack
+        
+        Logger.debug("Summon attack: OID #{summon_oid}, tick #{tick}, anim #{animation}, targets #{length(targets)}, character #{character_id}")
+        :ok
+
+      {:error, reason} ->
+        Logger.warn("Failed to handle summon attack: #{inspect(reason)}")
+    end
+  end
+
+  @doc """
+  Handles summon removal (CP_REMOVE_SUMMON / 0xE3).
+
+  Player manually removes their summon.
+
+  Reference: SummonHandler.RemoveSummon()
+  """
+  def handle_remove_summon(packet, client_pid) do
+    summon_oid = In.decode_int(packet)
+    
+    case Character.get_state_by_client(client_pid) do
+      {:ok, character_id, char_state} ->
+        # TODO: Validate summon exists and belongs to character
+        # TODO: Check if summon can be removed (not rock/shock)
+        # TODO: Remove summon from map
+        # TODO: Broadcast removal packet
+        # TODO: Cancel summon buff
+        
+        Logger.debug("Remove summon: OID #{summon_oid}, character #{character_id}")
+        :ok
+
+      {:error, reason} ->
+        Logger.warn("Failed to handle remove summon: #{inspect(reason)}")
+    end
+  end
+
+  @doc """
+  Handles summon sub-skill (CP_SUB_SUMMON / 0xE2).
+
+  Special summon abilities like:
+  - 35121009: Mech summon extension (spawn additional summons)
+  - 35111011: Healing
+  - 1321007: Beholder (heal/buff)
+
+  Reference: SummonHandler.SubSummon()
+  """
+  def handle_sub_summon(packet, client_pid) do
+    summon_oid = In.decode_int(packet)
+    
+    case Character.get_state_by_client(client_pid) do
+      {:ok, character_id, char_state} ->
+        # TODO: Get summon by OID
+        # TODO: Check summon cooldown
+        # TODO: Execute sub-skill based on summon skill ID
+        # TODO: Apply effects (heal, spawn, buff)
+        # TODO: Broadcast skill effect
+        
+        Logger.debug("Sub summon: OID #{summon_oid}, character #{character_id}")
+        :ok
+
+      {:error, reason} ->
+        Logger.warn("Failed to handle sub summon: #{inspect(reason)}")
+    end
+  end
+
+  @doc """
+  Handles PVP summon attack (CP_PVP_SUMMON / 0xE4).
+
+  Summon attacks in PVP mode.
+
+  Reference: SummonHandler.SummonPVP()
+  """
+  def handle_pvp_summon(packet, client_pid) do
+    summon_oid = In.decode_int(packet)
+    
+    # Parse attack data based on packet length
+    tick = if byte_size(packet.data) >= 27 do
+      packet
+      |> skip_bytes(23)
+      |> In.decode_int()
+    else
+      -1
+    end
+    
+    case Character.get_state_by_client(client_pid) do
+      {:ok, character_id, char_state} ->
+        # TODO: Validate player is in PVP
+        # TODO: Validate summon belongs to character
+        # TODO: Calculate PVP damage
+        # TODO: Apply damage to targets
+        # TODO: Update PVP score
+        # TODO: Broadcast attack packet
+        
+        Logger.debug("PVP summon attack: OID #{summon_oid}, tick #{tick}, character #{character_id}")
+        :ok
+
+      {:error, reason} ->
+        Logger.warn("Failed to handle PVP summon: #{inspect(reason)}")
+    end
+  end
+
+  # ============================================================================
+  # Helper Functions
+  # ============================================================================
+
+  defp parse_summon_targets(packet, count) do
+    Enum.reduce(1..count, [], fn _, acc ->
+      mob_oid = In.decode_int(packet)
+      _ = In.decode_bytes(packet, 18)  # skip unknown
+      damage = In.decode_int(packet)
+      
+      [{mob_oid, damage} | acc]
+    end)
+    |> Enum.reverse()
+  end
+
+  defp skip_bytes(packet, count) do
+    In.decode_bytes(packet, count)
+    packet
+  end
+end