Help detecting player instance inside a player

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#1

So, I’ve made this server script that should check inside a player’s inventory and character if the player has any tool, but it keeps returning ServerScriptService.Server.Detector:16: attempt to index nil with 'Backpack'

For some reason, it seems the script even fails to find the character in the first place. Anyone knows how can I fix this?

local Players = game:GetService("Players")
local Workspace = game:GetService("Workspace")
local folder = Workspace.Detector

for i, v in pairs(folder:GetChildren()) do
    local colorpart = v.COLORPART
    colorpart.Touched:Connect(function(part)
        print(part)
        local char = part
        local player = Players:GetPlayerFromCharacter(char)
        local backpack = player.Backpack
        if not IsOn then
            if char:FindFirstChild("IsWeapon") or backpack:FindFirstChild("IsWeapon") then
               print("PLAYER HAS WEAPON")
            end
        else
            return
        end
    end)
end
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#2

If the person that touched it is a character, usually part.Parent will give the character, Though this will still not work because if anything else touches it’ll error, so make sure to check if player isn’t nil before trying to get the backpack

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#3

That works, but for some reason, the game still outputs ServerScriptService.Server.Detector:16: attempt to index nil with 'Backpack'

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#4

Character models hold BaseParts inside of them. What you’re really looking for is part:FindFirstAncestorOfClass("Model")

This line will not always return a character object which could also be one of the reasons your script is erroring.

Fixed Code:

local Players = game:GetService("Players")
local Workspace = game:GetService("Workspace")
local folder = Workspace.Detector

for i, v in pairs(folder:GetChildren()) do
    local colorpart = v.COLORPART
    colorpart.Touched:Connect(function(part)
        print(part);

        local char = part:FindFirstAncestorOfClass("Model");
        local player = Players:GetPlayerFromCharacter(char);
        if (not player) then return; end

        local backpack = player.Backpack

        if (not IsOn) then
            if (char:FindFirstChild("IsWeapon", true)) or (backpack:FindFirstChild("IsWeapon", true)) then
               print("PLAYER HAS WEAPON")
            end
        end
    end)
end
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