Item gives bonus capacity (Canary tested)

[Joriku]

Hi,
here's a script that gives the player 10% capacity. It can be changed to give whatever upon item usage.

It's currently set to 2920 id, torch. You can change it to your likings.

I used the old codebase found here
Thanks for the script base @Xikini

-Added checks to prevent bonus happening if item is equiped on login or death + login.
This script may not be perfect, but it works as intended without any known possible exploits ways upon testing.

-- Configuration for items that have temporary effects when equipped
--[[
    Configuration options since 2021 (thanks Xikini for the old script base) 
    "head"
    "necklace"
    "backpack"
    "armor"
    "hand" -- is a shield/weapon
    "legs"
    "feet"
    "ring"
    "ammo"
--]]

local config = {
    [2920] = { -- item id
        slot = "ammo",
        equipEffect = 23,
        deEquipEffect = 24,
    },
}

-- Function to manage capacity bonus
function manageCapacityBonus(player, item, apply)
    if not item then return end  -- Ensure item is valid, adjust logic as needed for logout and death
    local itemId = item:getId()
    local itemConfig = config[itemId]
    if not itemConfig then return end

    local currentBonus = player:getStorageValue(BONUS_STORAGE_KEY)
    local currentCapacity = player:getCapacity()
    local bonusCapacity = math.floor(currentCapacity * 0.10)  -- Calculate 10% of current capacity

    if apply and currentBonus == 0 then
        player:setCapacity(currentCapacity + bonusCapacity)
        player:setStorageValue(BONUS_STORAGE_KEY, bonusCapacity)  -- Mark the bonus as applied
        player:getPosition():sendMagicEffect(itemConfig.equipEffect)
    elseif not apply and currentBonus > 0 then
        player:setCapacity(currentCapacity - currentBonus)
        player:setStorageValue(BONUS_STORAGE_KEY, 0)  -- Reset the bonus mark
        player:getPosition():sendMagicEffect(itemConfig.deEquipEffect)
    end
end

-- Registering the event for equipping and unequipping items
for itemId, itemConfig in pairs(config) do
    local moveeventEquip = MoveEvent()
    moveeventEquip:type("equip")
    moveeventEquip:id(itemId)  -- Assigning the item ID
    moveeventEquip.onEquip = function(player, item, slot, isCheck)
        if not isCheck then
            manageCapacityBonus(player, item, true)
        end
        return true
    end
    moveeventEquip:register()

    local moveeventDeEquip = MoveEvent()
    moveeventDeEquip:type("deEquip")
    moveeventDeEquip:id(itemId)  -- Assigning the item ID
    moveeventDeEquip.onDeEquip = function(player, item, slot, isCheck)
        if not isCheck then
            manageCapacityBonus(player, item, false)
        end
        return true
    end
    moveeventDeEquip:register()
end

-- Login, Logout, and Death handlers
local loginEvent = CreatureEvent("LoginHandler")
loginEvent.onLogin = function(player)
    for itemId, itemConfig in pairs(config) do
        local item = player:getSlotItem(itemConfig.slot)
        if item and config[item:getId()] then
            manageCapacityBonus(player, item, true)
        end
    end
    return true
end
loginEvent:register()

local logoutEvent = CreatureEvent("LogoutHandler")
logoutEvent.onLogout = function(player)
    for itemId, itemConfig in pairs(config) do
        local item = player:getSlotItem(itemConfig.slot)
        if item then
            manageCapacityBonus(player, item, false)
        end
    end
    return true
end
logoutEvent:register()

local deathEvent = CreatureEvent("DeathHandler")
deathEvent.onDeath = function(player)
    for itemId, itemConfig in pairs(config) do
        local item = player:getSlotItem(itemConfig.slot)
        if item then
            manageCapacityBonus(player, item, false)
        end
    end
    return true
end
deathEvent:register()