✓ ANSWER ACCEPTED

Why does my script index a nil value from Humanoid.Health?

Asked Apr 17, 2020458 views3 answers

local Humanoid = script.Parent:FindFirstChild("Humanoid")

function findHostile()
	local hostile = Humanoid:FindFirstChild("creator")
	if hostile ~= nil then
		if hostile.Value ~= nil then
			local hostileHumanoid = hostile.Value:FindFirstChild("Humanoid")
			while hostileHumanoid.Health >= 0 do
				Humanoid:MoveTo(hostile.Position,hostile)
			end
		end
	end
end

Humanoid.HealthChanged:Connect(findHostile)

It said that 'while hostileHumanoid.Health >= 0 do' tried to index a nil value with Health. Could anyone help me? This is a script under an NPC, and I'm trying to make it so that once you damage it, it follows you instantly.

AnonymousApr 17, 2020

3 answers

✓ Accepted answer

Normally the Value of creator is a UserData (Instance). So you need to find the Character.

local Humanoid = script.Parent:WaitForChild("Humanoid")

Humanoid.HealthChanged:Connect(function()
    local creator = Humanoid:WaitForChild("creator")
    if creator ~= nil then
		local hostile = creator.Value
		print(hostile.Name, type(hostile), typeof(hostile))
        if hostile ~= nil and hostile.Character then
			local hosCharacter = hostile.Character
            local hosHumanoid = hosCharacter:WaitForChild("Humanoid")
            local hosHPart = hosCharacter:WaitForChild("HumanoidRootPart")
            repeat wait()
                Humanoid:MoveTo(hosHPart.Position, hosHPart)
            until hosHumanoid.Health >= 0 or hosCharacter == nil
        end
    end
end)

AnonymousApr 17, 2020Edited Apr 17, 2020Permalink

1 comment

Thanks!

AnonymousApr 17, 2020#

Try changing

while hostileHumanoid.Health >= 0 do

while hostileHumanoid and hostileHumanoid.Health >= 0 do

Since you do :FindFirstChild'Humanoid' you need to check if it didnt return nil first.

AnonymousApr 17, 2020Permalink

2 comments

Sorry doesnt work

AnonymousApr 17, 2020#

It seems hostileHumanoid is nil itself

AnonymousApr 17, 2020#

I'm assuming that 'hostile' is an ObjectValue.

Try this:

local Humanoid = script.Parent:FindFirstChild("Humanoid")

function findHostile()
    local hostile = Humanoid:FindFirstChild("creator")
    if hostile ~= nil then
        if hostile.Value ~= nil then
            local hostileHumanoid = hostile.Value
            while hostileHumanoid.Health >= 0 do
                Humanoid:MoveTo(hostile.Position,hostile)
            end
        end
    end
end

Humanoid.HealthChanged:Connect(findHostile)

AnonymousApr 17, 2020Permalink

4 comments

Remeber that health is not a child of a Player

AnonymousApr 17, 2020#

Im gonna edit this, wait

AnonymousApr 17, 2020#

What is the hostileHumanoid's value?

AnonymousApr 17, 2020#

its supposed to be the humanoid of the player that attacked the NPC

AnonymousApr 17, 2020#

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