port over some more

lib/odinsea/game/inventory_manipulator.ex

@@ -0,0 +1,120 @@
+defmodule Odinsea.Game.InventoryManipulator do
+  @moduledoc """
+  High-level inventory operations for adding/removing items.
+  Ported from Java server.MapleInventoryManipulator
+  
+  This module provides convenient functions for:
+  - Adding items from drops
+  - Adding items by ID
+  - Removing items
+  - Checking inventory space
+  """
+
+  require Logger
+
+  alias Odinsea.Game.Character
+
+  @doc """
+  Adds an item to the character's inventory from a drop.
+  Returns {:ok, item} on success, {:error, reason} on failure.
+  
+  Ported from MapleInventoryManipulator.addFromDrop()
+  """
+  def add_from_drop(character_pid, item) when is_pid(character_pid) do
+    Character.add_item_from_drop(character_pid, item)
+  end
+
+  def add_from_drop(character_id, item) when is_integer(character_id) do
+    case Registry.lookup(Odinsea.CharacterRegistry, character_id) do
+      [{pid, _}] -> add_from_drop(pid, item)
+      [] -> {:error, :character_not_found}
+    end
+  end
+
+  @doc """
+  Adds an item to the character's inventory by item ID and quantity.
+  Creates a new item instance with default properties.
+  
+  Ported from MapleInventoryManipulator.addById()
+  """
+  def add_by_id(character_pid, item_id, quantity \\ 1, gm_log \\ "") do
+    # Create a basic item
+    item = %{
+      item_id: item_id,
+      quantity: quantity,
+      owner: "",
+      flag: 0,
+      gm_log: gm_log
+    }
+    
+    add_from_drop(character_pid, item)
+  end
+
+  @doc """
+  Adds an item to the character's inventory with full item details.
+  
+  Ported from MapleInventoryManipulator.addbyItem()
+  """
+  def add_by_item(character_pid, item) do
+    add_from_drop(character_pid, item)
+  end
+
+  @doc """
+  Removes an item from a specific inventory slot.
+  
+  Ported from MapleInventoryManipulator.removeFromSlot()
+  """
+  def remove_from_slot(character_pid, inv_type, slot, quantity \\ 1, _from_drop \\ false, _wedding \\ false) do
+    Character.drop_item(character_pid, inv_type, slot, quantity)
+  end
+
+  @doc """
+  Removes items by item ID from the inventory.
+  
+  Ported from MapleInventoryManipulator.removeById()
+  """
+  def remove_by_id(_character_pid, _inv_type, _item_id, _quantity, _delete \\ false, _wedding \\ false) do
+    # TODO: Implement remove by ID (search for item, then remove)
+    {:ok, 0}
+  end
+
+  @doc """
+  Checks if the character has space for an item.
+  
+  Ported from MapleInventoryManipulator.checkSpace()
+  """
+  def check_space(character_pid, item_id, quantity \\ 1, _owner \\ "") do
+    inv_type = get_inventory_type(item_id)
+    
+    case Character.check_inventory_space(character_pid, inv_type, quantity) do
+      {:ok, _slot} -> true
+      {:error, _} -> false
+    end
+  end
+
+  @doc """
+  Checks if the character's inventory is full.
+  """
+  def inventory_full?(character_pid, inv_type) do
+    case Character.check_inventory_space(character_pid, inv_type, 1) do
+      {:ok, _} -> false
+      {:error, :inventory_full} -> true
+    end
+  end
+
+  @doc """
+  Gets the inventory type from an item ID.
+  """
+  def get_inventory_type(item_id) do
+    type_prefix = div(item_id, 1_000_000)
+    
+    case type_prefix do
+      1 -> :equip
+      2 -> :use
+      3 -> :setup
+      4 -> :etc
+      5 -> :cash
+      _ -> :etc
+    end
+  end
+end