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Can someone tell me what this error means?

Asked by
kingalpha1 15
10 years ago 
local enabled = true
Player = script.Parent.Parent
character = Player.CharacterAdded:wait();
mouse = Player:GetMouse()
run = game:GetService("RunService")
Torso = Player.Character.Torso

function onKeyDown(key)
    key = key:lower()
    if key == "e" then
        f = Instance.new("Fire")
        f.Color = Color3.new(0, 85, 255)
        f.SecondaryColor = Color3.new(0, 170, 255)
        f.Size = 15
        f.Heat = 25
        f.Parent = Torso
        weld = Instance.new("Weld")
        weld.Part0 = f
        --weld.C0 = f.CFrame:inverse()
        weld.Part1 = Torso
        weld.Parent = Torso
        y = Instance.new("BodyVelocity")
        y.maxForce = Vector3.new(5, 5, 5)
        y.velocity = Player.Character.Torso.CFrame.lookVector*80
        y.Parent = Torso
        game.Debris:AddItem(f,weld,4)
    end
end

mouse.KeyDown:connect(onKeyDown)

21:23:49.410 - bad cast 21:23:49.410 - Script 'Players.kingalpha1.Backpack.Test', Line 18 21:23:49.411 - Stack End 21:23:49.411 - Disconnected event because of exception 21:25:06.524 - Auto-Saving...

this is a localscript btw.

0
You can't set a weld's Part to a fire. Weld's Part0 and Part1 properties have to be, well, parts. Hence their names. If you want a fire to be in a part, just parent it to the part you want it to be in. Tkdriverx 514 — 10y

1 answer

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Answered by
BlueTaslem 18071 Moderation Voter Administrator Community Moderator Super Administrator
10 years ago

A cast is a change of a value from one type to another.

A simple example in Lua is with strings and numbers through arithmetic; "8" * 1 turns "8" into 8 and then performs the multiplication.

"Bad cast" is referring to the fact that it wasn't able to turn the value into the type it wanted.

Namely, that it can't turn Fire into a BasePart when you set Part0.

Fire objects aren't welded to parts. They are just parented to them.

As to the remainder of the error, "disconnected due to exception":

"exception" is another name for error; when a function connected to an event errors, ROBLOX stops firing the event for that function; this message indicates that behavior.

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