Inventory - Events

Inventory-related events for item operations and state changes

Inventory events fire when items are added, removed, used, or when inventory state changes, allowing other resources to react to inventory operations.

Server Events

All inventory events fire on the server-side.

Item Operations

Added, Removed, Moved, Swapped

Item Usage

Used, Equipped, Dropped

Inventory State

Created, Deleted, Updated

Validation

Pre-operation validation hooks

---

Item Operation Events

mythic-inventory:server:ItemAdded

Fired when an item is successfully added to an inventory.

AddEventHandler('mythic-inventory:server:ItemAdded', function(characterId, itemName, count, slot, metadata)
    -- Handler code
end)

Parameters:

characterId · number

Character SID who received the item

itemName · string

Item identifier (e.g., ‘water’, ‘weapon_pistol’)

count · number

Quantity added

slot · number

Slot number where item was added

metadata · table

Item metadata (can be empty table)

Examples:

-- Log item additions
AddEventHandler('mythic-inventory:server:ItemAdded', function(characterId, itemName, count, slot, metadata)
    Logger:Info('Inventory', 'Item added', {
        console = true,
        file = true
    }, {
        character = characterId,
        item = itemName,
        count = count,
        slot = slot
    })
end)

-- Track weapon distribution
AddEventHandler('mythic-inventory:server:ItemAdded', function(characterId, itemName, count, slot, metadata)
    if string.match(itemName, '^weapon_') then
        -- Log weapon given
        Database.Game:insertOne({
            collection = 'weapon_logs',
            document = {
                character = characterId,
                weapon = itemName,
                serial = metadata.serial,
                action = 'added',
                timestamp = os.time()
            }
        })

        -- Notify admins
        Logger:Info('Weapons', 'Weapon distributed', {
            console = true,
            file = true,
            discord = true
        }, {
            character = characterId,
            weapon = itemName,
            serial = metadata.serial
        })
    end
end)

-- Update client inventory UI
AddEventHandler('mythic-inventory:server:ItemAdded', function(characterId, itemName, count, slot, metadata)
    local player = Fetch:SID(characterId)

    if player then
        local source = player:GetData('Source')
        local inventory = Inventory.Items:GetCounts(characterId, 1)
        TriggerClientEvent('mythic-inventory:client:SetInventory', source, inventory)

        -- Show notification
        local itemData = Items:Get(itemName)
        TriggerClientEvent('mythic-notifications:client:Send', source, {
            message = 'Received ' .. count .. 'x ' .. itemData.label,
            type = 'success'
        })
    end
end)

-- Achievement tracking
AddEventHandler('mythic-inventory:server:ItemAdded', function(characterId, itemName, count, slot, metadata)
    if itemName == 'rare_diamond' then
        Achievements:Unlock(characterId, 'found_diamond')
    end
end)

---

mythic-inventory:server:ItemRemoved

Fired when an item is removed from an inventory.

AddEventHandler('mythic-inventory:server:ItemRemoved', function(characterId, itemName, count, slot)
    -- Handler code
end)

Parameters:

characterId · number

Character SID

itemName · string

Item identifier

count · number

Quantity removed

slot · number

Slot number item was removed from

Examples:

-- Log item removals
AddEventHandler('mythic-inventory:server:ItemRemoved', function(characterId, itemName, count, slot)
    Logger:Info('Inventory', 'Item removed', {
        console = true,
        file = true
    }, {
        character = characterId,
        item = itemName,
        count = count,
        slot = slot
    })
end)

-- Track consumable usage
AddEventHandler('mythic-inventory:server:ItemRemoved', function(characterId, itemName, count, slot)
    local consumables = { 'water', 'sandwich', 'burger', 'cola' }

    if table.contains(consumables, itemName) then
        -- Update consumption stats
        Characters:UpdateCharacter(characterId, {
            ['metadata.stats.consumed'] = (char.metadata.stats.consumed or 0) + count
        })
    end
end)

-- Notify on weapon removal
AddEventHandler('mythic-inventory:server:ItemRemoved', function(characterId, itemName, count, slot)
    if string.match(itemName, '^weapon_') then
        local player = Fetch:SID(characterId)

        if player then
            local source = player:GetData('Source')
            TriggerClientEvent('mythic-weapons:client:RemoveWeapon', source, itemName)
        end
    end
end)

---

mythic-inventory:server:ItemUsed

Fired when a player uses an item.

AddEventHandler('mythic-inventory:server:ItemUsed', function(source, characterId, itemName, slot, metadata)
    -- Handler code
end)

Parameters:

source · number

Player server ID who used the item

characterId · number

Character SID

itemName · string

Item identifier

slot · number

Slot the item was used from

metadata · table

Item metadata

Examples:

-- Handle item usage
AddEventHandler('mythic-inventory:server:ItemUsed', function(source, characterId, itemName, slot, metadata)
    if itemName == 'water' then
        -- Restore thirst
        Characters:UpdateCharacter(characterId, {
            ['metadata.needs.thirst'] = 100
        })

        -- Remove item
        Inventory.Items:Remove(characterId, 1, itemName, 1)

        -- Notify
        TriggerClientEvent('mythic-notifications:client:Send', source, {
            message = 'You drank water',
            type = 'success'
        })

    elseif itemName == 'medkit' then
        -- Heal player
        TriggerClientEvent('mythic-medical:client:Heal', source, 100)

        -- Remove item
        Inventory.Items:Remove(characterId, 1, itemName, 1)

    elseif itemName == 'lockpick' then
        -- Start lockpicking minigame
        TriggerClientEvent('mythic-lockpick:client:Start', source, function(success)
            if not success then
                -- Break lockpick on failure
                Inventory.Items:Remove(characterId, 1, itemName, 1)
            end
        end)
    end
end)

-- Log usage
AddEventHandler('mythic-inventory:server:ItemUsed', function(source, characterId, itemName, slot, metadata)
    Logger:Info('Items', 'Item used', {
        console = true,
        file = true
    }, {
        player = source,
        character = characterId,
        item = itemName
    })
end)

-- Track drug usage
AddEventHandler('mythic-inventory:server:ItemUsed', function(source, characterId, itemName, slot, metadata)
    local drugs = { 'weed_joint', 'cocaine', 'meth' }

    if table.contains(drugs, itemName) then
        -- Track in character metadata
        Characters:UpdateCharacter(characterId, {
            ['metadata.stats.drugsUsed'] = (char.metadata.stats.drugsUsed or 0) + 1
        })

        -- Police can detect
        TriggerEvent('mythic-police:server:DrugActivityDetected', source, itemName)
    end
end)

---

mythic-inventory:server:ItemMoved

Fired when an item is moved from one slot to another.

AddEventHandler('mythic-inventory:server:ItemMoved', function(characterId, fromSlot, toSlot, itemName, count)
    -- Handler code
end)

Parameters:

characterId · number

Character SID

fromSlot · number

Source slot number

toSlot · number

Destination slot number

itemName · string

Item identifier

count · number

Quantity moved

Examples:

-- Update client on move
AddEventHandler('mythic-inventory:server:ItemMoved', function(characterId, fromSlot, toSlot, itemName, count)
    local player = Fetch:SID(characterId)

    if player then
        local source = player:GetData('Source')
        local inventory = Inventory.Items:GetCounts(characterId, 1)
        TriggerClientEvent('mythic-inventory:client:SetInventory', source, inventory)
    end
end)

-- Log suspicious rapid movements (anti-cheat)
local moveTracking = {}

AddEventHandler('mythic-inventory:server:ItemMoved', function(characterId, fromSlot, toSlot, itemName, count)
    moveTracking[characterId] = moveTracking[characterId] or { count = 0, lastMove = 0 }

    local now = os.time()

    if now - moveTracking[characterId].lastMove < 1 then
        moveTracking[characterId].count = moveTracking[characterId].count + 1

        if moveTracking[characterId].count > 10 then
            -- Suspicious activity
            Logger:Warn('AntiCheat', 'Rapid inventory movements', {
                console = true,
                file = true,
                discord = true
            }, {
                character = characterId,
                moves = moveTracking[characterId].count
            })
        end
    else
        moveTracking[characterId].count = 0
    end

    moveTracking[characterId].lastMove = now
end)

---

Item Transfer Events

mythic-inventory:server:ItemGiven

Fired when an item is given from one player to another.

AddEventHandler('mythic-inventory:server:ItemGiven', function(fromCharacterId, toCharacterId, itemName, count)
    -- Handler code
end)

Parameters:

fromCharacterId · number

Character SID of giver

toCharacterId · number

Character SID of receiver

itemName · string

Item identifier

count · number

Quantity given

Examples:

-- Log trades between players
AddEventHandler('mythic-inventory:server:ItemGiven', function(fromCharacterId, toCharacterId, itemName, count)
    Logger:Info('Trading', 'Item given', {
        console = true,
        file = true
    }, {
        from = fromCharacterId,
        to = toCharacterId,
        item = itemName,
        count = count
    })

    -- Insert trade log
    Database.Game:insertOne({
        collection = 'trades',
        document = {
            from = fromCharacterId,
            to = toCharacterId,
            item = itemName,
            count = count,
            timestamp = os.time()
        }
    })
end)

-- Prevent weapon trading
AddEventHandler('mythic-inventory:server:ItemGiven', function(fromCharacterId, toCharacterId, itemName, count)
    if string.match(itemName, '^weapon_') then
        local fromPlayer = Fetch:SID(fromCharacterId)

        -- Block weapon trades
        Logger:Warn('Trading', 'Attempted weapon trade', {
            console = true,
            file = true
        }, {
            from = fromCharacterId,
            to = toCharacterId,
            weapon = itemName
        })

        if fromPlayer then
            local fromSource = fromPlayer:GetData('Source')
            TriggerClientEvent('mythic-notifications:client:Send', fromSource, {
                message = 'Weapons cannot be traded',
                type = 'error'
            })
        end

        -- Cancel the trade
        return false
    end
end)

-- Track drug distribution
AddEventHandler('mythic-inventory:server:ItemGiven', function(fromCharacterId, toCharacterId, itemName, count)
    local drugs = { 'weed', 'cocaine', 'meth' }

    if table.contains(drugs, itemName) then
        -- Track dealer activity
        Characters:UpdateCharacter(fromCharacterId, {
            ['metadata.stats.drugsDealt'] = (char.metadata.stats.drugsDealt or 0) + count
        })

        -- Police can track distribution networks
        TriggerEvent('mythic-police:server:DrugDistributionDetected', fromCharacterId, toCharacterId, itemName, count)
    end
end)

---

mythic-inventory:server:ItemDropped

Fired when a player drops an item on the ground.

AddEventHandler('mythic-inventory:server:ItemDropped', function(source, characterId, itemName, count, coords)
    -- Handler code
end)

Parameters:

source · number

Player server ID

characterId · number

Character SID

itemName · string

Item identifier

count · number

Quantity dropped

coords · table

Drop location {x, y, z}

Examples:

-- Create world item
AddEventHandler('mythic-inventory:server:ItemDropped', function(source, characterId, itemName, count, coords)
    -- Create pickup in the world
    local pickup = WorldItems:Create(itemName, count, coords)

    -- Notify nearby players
    TriggerClientEvent('mythic-inventory:client:ItemDropped', -1, {
        item = itemName,
        count = count,
        coords = coords,
        pickupId = pickup.id
    })

    -- Auto-delete after 5 minutes
    SetTimeout(300000, function()
        WorldItems:Delete(pickup.id)
    end)
end)

-- Log weapon drops
AddEventHandler('mythic-inventory:server:ItemDropped', function(source, characterId, itemName, count, coords)
    if string.match(itemName, '^weapon_') then
        Logger:Info('Weapons', 'Weapon dropped', {
            console = true,
            file = true
        }, {
            character = characterId,
            weapon = itemName,
            location = coords
        })
    end
end)

-- Prevent dropping certain items
AddEventHandler('mythic-inventory:server:ItemDropped', function(source, characterId, itemName, count, coords)
    local noDropItems = { 'id_card', 'driver_license', 'phone' }

    if table.contains(noDropItems, itemName) then
        TriggerClientEvent('mythic-notifications:client:Send', source, {
            message = 'You cannot drop this item',
            type = 'error'
        })

        -- Cancel drop
        return false
    end
end)

---

Inventory State Events

mythic-inventory:server:InventoryCreated

Fired when a new inventory is created.

AddEventHandler('mythic-inventory:server:InventoryCreated', function(characterId, inventory)
    -- Handler code
end)

Examples:

AddEventHandler('mythic-inventory:server:InventoryCreated', function(characterId, inventory)
    Logger:Info('Inventory', 'Inventory created', {
        console = true,
        file = true
    }, {
        character = characterId,
        maxSlots = inventory.maxSlots,
        maxWeight = inventory.maxWeight
    })
end)

---

mythic-inventory:server:InventoryOpened

Fired when a player opens their inventory UI.

AddEventHandler('mythic-inventory:server:InventoryOpened', function(source, characterId)
    -- Handler code
end)

Examples:

-- Send fresh inventory data
AddEventHandler('mythic-inventory:server:InventoryOpened', function(source, characterId)
    local inventory = Inventory.Items:GetCounts(characterId, 1)
    TriggerClientEvent('mythic-inventory:client:SetInventory', source, inventory)
end)

-- Track inventory usage
AddEventHandler('mythic-inventory:server:InventoryOpened', function(source, characterId)
    Characters:UpdateCharacter(characterId, {
        ['metadata.stats.inventoryOpened'] = (char.metadata.stats.inventoryOpened or 0) + 1
    })
end)

---

Client Events

mythic-inventory:client:UpdateInventory

Sent from server to update client inventory UI.

AddEventHandler('mythic-inventory:client:UpdateInventory', function(inventory)
    -- Handler code
end)

Examples:

-- Update React UI
AddEventHandler('mythic-inventory:client:UpdateInventory', function(inventory)
    SendNUIMessage({
        type = 'SET_INVENTORY',
        inventory = inventory
    })
end)

---

mythic-inventory:client:ItemUsed

Sent to client when an item is used (for client-side effects).

AddEventHandler('mythic-inventory:client:ItemUsed', function(itemName, metadata)
    -- Handler code
end)

Examples:

-- Play animations/effects
AddEventHandler('mythic-inventory:client:ItemUsed', function(itemName, metadata)
    local ped = PlayerPedId()

    if itemName == 'water' then
        -- Play drinking animation
        TaskStartScenarioInPlace(ped, 'WORLD_HUMAN_DRINKING', 0, true)
        Wait(3000)
        ClearPedTasks(ped)

    elseif itemName == 'sandwich' then
        -- Play eating animation
        TaskStartScenarioInPlace(ped, 'WORLD_HUMAN_SEAT_WALL_EATING', 0, true)
        Wait(5000)
        ClearPedTasks(ped)

    elseif itemName == 'phone' then
        -- Open phone UI
        TriggerEvent('mythic-phone:client:Open')
    end
end)

---

Using Events for Custom Logic

Custom Item Effects

-- Server: Handle custom consumable
AddEventHandler('mythic-inventory:server:ItemUsed', function(source, characterId, itemName, slot, metadata)
    if itemName == 'energy_drink' then
        -- Restore energy
        Characters:UpdateCharacter(characterId, {
            ['metadata.needs.energy'] = 100
        })

        -- Give temporary speed boost
        TriggerClientEvent('mythic-effects:client:SpeedBoost', source, 30000)  -- 30 seconds

        -- Remove item
        Inventory.Items:Remove(characterId, 1, itemName, 1)

        -- Notify
        TriggerClientEvent('mythic-notifications:client:Send', source, {
            message = 'You feel energized!',
            type = 'success'
        })
    end
end)

-- Client: Apply speed boost
AddEventHandler('mythic-effects:client:SpeedBoost', function(duration)
    local ped = PlayerPedId()

    SetPedMoveRateOverride(ped, 1.3)  -- 30% faster

    SetTimeout(duration, function()
        SetPedMoveRateOverride(ped, 1.0)  -- Back to normal
    end)
end)

Inventory Logging System

-- Comprehensive inventory audit log
local function LogInventoryAction(action, characterId, details)
    Database.Game:insertOne({
        collection = 'inventory_logs',
        document = {
            action = action,
            character = characterId,
            details = details,
            timestamp = os.time()
        }
    })
end

AddEventHandler('mythic-inventory:server:ItemAdded', function(characterId, itemName, count, slot, metadata)
    LogInventoryAction('item_added', characterId, {
        item = itemName,
        count = count,
        slot = slot
    })
end)

AddEventHandler('mythic-inventory:server:ItemRemoved', function(characterId, itemName, count, slot)
    LogInventoryAction('item_removed', characterId, {
        item = itemName,
        count = count,
        slot = slot
    })
end)

AddEventHandler('mythic-inventory:server:ItemGiven', function(fromCharacterId, toCharacterId, itemName, count)
    LogInventoryAction('item_given', fromCharacterId, {
        to = toCharacterId,
        item = itemName,
        count = count
    })
end)

Anti-Cheat Integration

-- Track suspicious inventory operations
local suspiciousActivity = {}

AddEventHandler('mythic-inventory:server:ItemAdded', function(characterId, itemName, count, slot, metadata)
    -- Flag large item additions
    if count > 100 then
        local player = Fetch:SID(characterId)

        Logger:Warn('AntiCheat', 'Large item addition', {
            console = true,
            file = true,
            discord = true
        }, {
            character = characterId,
            item = itemName,
            count = count
        })

        suspiciousActivity[characterId] = (suspiciousActivity[characterId] or 0) + 1

        if suspiciousActivity[characterId] > 3 and player then
            -- Automatic kick/ban
            local source = player:GetData('Source')
            Punishment:Ban(source, 'Inventory manipulation', 7)  -- 7 day ban
        end
    end
end)

---

Best Practices

Validate Event Data

AddEventHandler('mythic-inventory:server:ItemUsed', function(source, characterId, itemName, slot, metadata)
    -- Validate character
    local player = Fetch:SID(characterId)
    if not player then
        return
    end
    local char = player:GetData('Character')
    if not char then
        return
    end

    -- Validate item exists
    local item = Items:Get(itemName)
    if not item then
        Logger:Warn('Inventory', 'Invalid item used', {
            console = true,
            file = true
        }, {
            character = characterId,
            item = itemName
        })
        return
    end

    -- Validate slot
    local slotItem = Inventory:GetItemInSlot(characterId, slot)
    if not slotItem or slotItem.name ~= itemName then
        return
    end

    -- Process usage
end)

Update Client After Changes

AddEventHandler('mythic-inventory:server:ItemAdded', function(characterId, itemName, count, slot, metadata)
    local player = Fetch:SID(characterId)

    if player then
        local source = player:GetData('Source')
        local inventory = Inventory.Items:GetCounts(characterId, 1)
        TriggerClientEvent('mythic-inventory:client:UpdateInventory', source, inventory)
    end
end)

Clean Up Tracking Data

local eventTracking = {}

AddEventHandler('playerDropped', function()
    local player = Fetch:Source(source)
    if player then
        local char = player:GetData('Character')
        if char then
            eventTracking[char:GetData('SID')] = nil
        end
    end
end)

---

Next Steps

Inventory - Exports

Inventory management methods

Inventory - Item Definition

Item data structure

Characters Events

Character-related events

Event System

Understanding events

Event Order: Inventory events fire in a specific sequence. For example, when an item is used, ItemUsed fires first, then if the item is consumed, ItemRemoved fires. Use this to your advantage when chaining logic.