Robloxインベントリアーキテクチャ: グリッドスロット・重量・サーバー権限スタック

-- サーバー権限インベントリマネージャー
local InventoryManager = {}
InventoryManager.__index = InventoryManager
local ItemDatabase = require(game.ReplicatedStorage.ItemDatabase)

function InventoryManager.new(player, maxSlots, maxWeight)
    local self = setmetatable({}, InventoryManager)
    self.Player = player
    self.MaxSlots = maxSlots or 30
    self.MaxWeight = maxWeight or 100
    self.Slots = table.create(self.MaxSlots, false)
    self.CurrentWeight = 0
    self.IsLocked = false
    return self
end

function InventoryManager:AddItem(itemId, amount)
    if self.IsLocked then return false, "INVENTORY_LOCKED" end
    local itemData = ItemDatabase[itemId]
    if not itemData then return false, "INVALID_ITEM" end
    local addedWeight = itemData.Weight * amount
    if self.CurrentWeight + addedWeight > self.MaxWeight then
        return false, "OVER_ENCUMBERED"
    end
    for slotIndex = 1, self.MaxSlots do
        local slot = self.Slots[slotIndex]
        if slot and slot.Id == itemId and slot.Count < itemData.MaxStack then
            local space = itemData.MaxStack - slot.Count
            local toAdd = math.min(space, amount)
            slot.Count = slot.Count + toAdd
            amount = amount - toAdd
            self.CurrentWeight = self.CurrentWeight + (itemData.Weight * toAdd)
            if amount <= 0 then return true end
        end
    end
    for slotIndex = 1, self.MaxSlots do
        if not self.Slots[slotIndex] then
            self.Slots[slotIndex] = {
                UUID = game:GetService("HttpService"):GenerateGUID(false),
                Id = itemId,
                Count = amount,
                Durability = itemData.MaxDurability
            }
            self.CurrentWeight = self.CurrentWeight + (itemData.Weight * amount)
            return true
        end
    end
    return false, "INVENTORY_FULL"
end

return InventoryManager