Invalid Argument #2 to ‘new’ Vector 3 Expected got Nil? [SOLVED]

Help and Feedback Scripting Support
#1

i’m trying to make a knockback script on a tool but that error appears

Server Script Code:

local tool = script.Parent

local remote = game.ReplicatedStorage:WaitForChild("Hitted")

remote.OnServerEvent:Connect(function(plr, target)
	if target then
		local mouse = plr:GetMouse()
		if target.Parent:FindFirstChild("Humanoid") then
			local root = target.Parent.HumanoidRootPart
			local velocity = Instance.new("BodyVelocity")
			velocity.MaxForce = Vector3.new(9999999,9999999,9999999)
			velocity.Velocity = CFrame.new(plr.Character.HumanoidRootPart.Position, Vector3, mouse).lookVector * 5
			velocity.Parent = root
			wait(0.5)
			velocity:Destroy()
		end
	end
end)

Local Script:

local tool = script.Parent

local remote = game.ReplicatedStorage:WaitForChild("Hitted")

local plr = game.Players.LocalPlayer

local mouse = plr:GetMouse()

tool.Activated:Connect(function()
	remote:FireServer(mouse.Target, true, "Part Equipped")
end)

Error Message Is

Vector3 Expected Got Nil

Any Help Will Work And Post With The Script

#2

What line is the error on?

(too little characters)

#3

Try using mouse.Hit.Position instead of mouse.Target

1 Like
#4

Doesn’t work

(Too Little Characters)

#5

line 13

(too little characters)

#6

The second argument in your CFrame.new() constructor being Vector3, is Vector3 a variable you have or is it supposed to be Vector3.new()?

#7

It Was A Mistake In The Coding

(too little characters)

#8

Player:GetMouse() can only be called from a LocalScript and the server is unable to get the object itself, so you will need to replace your code like this:

Local Script:

local tool = script.Parent

local remote = game.ReplicatedStorage:WaitForChild("Hitted")

local plr = game.Players.LocalPlayer

local mouse = plr:GetMouse()

tool.Activated:Connect(function()
	remote:FireServer(mouse.Target, mouse.Hit)
end)

Server Script:

local remote = game.ReplicatedStorage:WaitForChild("Hitted")

remote.OnServerEvent:Connect(function(plr, target, mouseCFrame)
	if target then
		if target.Parent:FindFirstChild("Humanoid") then
			local lookVector = mouseCFrame.LookVector --Gets mouse CFrame
			
			if mouseCFrame.LookVector.Y < 0 then 
				lookVector = mouseCFrame.LookVector * Vector3.new(1,-1,1) --This is only to make player knockback upwards, and not downwards. You can remove this if you want.
			end
						
			local root = target.Parent.HumanoidRootPart
			local velocity = Instance.new("BodyVelocity")
			
			velocity.MaxForce = Vector3.new(math.huge, math.huge, math.huge)
			velocity.P = 1500
			velocity.Velocity = lookVector * 5 * Vector3.new(1, 2, 1) --Get mouse direction and increases it, you can mess around with this values until you find a good one
			velocity.Parent = root
			wait(0.5)
			velocity:Destroy()
		end
	end
end)
#9

it works

local script code:

local tool = script.Parent

local remote = game.ReplicatedStorage:WaitForChild("Hitted")

local plr = game.Players.LocalPlayer

local mouse = plr:GetMouse()

tool.Activated:Connect(function()
	remote:FireServer(mouse.Target, mouse.Hit)
end)

Solution Server script code:

local remote = game.ReplicatedStorage:WaitForChild("Hitted")

remote.OnServerEvent:Connect(function(plr, target, mouseCFrame)
	if target then
		if target.Parent:FindFirstChild("Humanoid") then
			local lookVector = mouseCFrame.LookVector --Gets mouse CFrame

			if mouseCFrame.LookVector.Y < 0 then 
				lookVector = mouseCFrame.LookVector * Vector3.new(1,-1,1) --This is only to make player knockback upwards, and not downwards. You can remove this if you want.
			end

			local root = target.Parent.HumanoidRootPart
			local velocity = Instance.new("BodyVelocity")

			velocity.MaxForce = Vector3.new(math.huge, math.huge, math.huge)
			velocity.P = 1500
			velocity.Velocity = lookVector * 5 * Vector3.new(5, 5, 5) --Get mouse direction and increases it, you can mess around with this values until you find a good one
			velocity.Parent = root
			wait(0.5)
			velocity:Destroy()
		end
	end
end)

Thanks To SirPotato_a