如何检测Roblox玩家是否手持工具？现有脚本问题求助

Issues in the Original Script #

• Redundant duplicate declaration of the lock variable
• Only checks the player's Backpack for the SilverKey, not their Character (where held tools are stored)
• No protection against repeated Touched event triggers (which can cause unintended multiple executions)
• Minimal key information printed

Corrected Script #

local Players = game:GetService("Players")
local lock = script.Parent
local isLockActivated = false -- Flag to prevent repeated triggers

-- Helper function to check if a player has the SilverKey
local function playerHasSilverKey(player)
    -- Check Backpack for stored key
    local backpackKey = player.Backpack:FindFirstChild("SilverKey")
    if backpackKey then
        return backpackKey
    end
    -- Check Character for held key
    local characterKey = player.Character:FindFirstChild("SilverKey")
    if characterKey then
        return characterKey
    end
    return nil
end

local function onTouched(hit)
    -- Exit immediately if lock is already activated
    if isLockActivated then
        return
    end

    -- Get the player associated with the touched character
    local player = Players:GetPlayerFromCharacter(hit.Parent)
    if not player then
        return
    end

    -- Verify player has the SilverKey
    local silverKey = playerHasSilverKey(player)
    if silverKey then
        -- Print detailed key information for debugging
        print("SilverKey detected for player:", player.Name)
        print("Key location:", silverKey.Parent.Name)
        print("Key object details:", silverKey:GetFullName())

        -- Update lock properties
        lock.CanCollide = false
        lock.Anchored = false
        isLockActivated = true -- Mark lock as processed to avoid repeats
    end
end

-- Connect the touch event handler to the lock part
lock.Touched:Connect(onTouched)

Key Improvements Explained #

• Dual Key Detection: Checks both the player's Backpack (stored key) and Character (held key) to cover all scenarios.
• Prevent Repeat Triggers: The isLockActivated flag ensures the lock is modified only once, even if the Touched event fires multiple times.
• Clear Debug Output: Prints specific details about the key and player to help troubleshoot issues during testing.
• Clean Variable Management: Removed redundant declarations and used consistent references for the lock part.

Setup Instructions #

1. Insert this script directly into your Lock part in Roblox Studio.
2. Ensure your key item is named exactly SilverKey (case-sensitive).
3. Test by having a player hold the key or keep it in their backpack, then touch the Lock part.

内容的提问来源于stack exchange，提问作者Boostgb