Resize Handles not working right

[NoobdyDev]

1. What do you want to achieve?
   I want to make a part resizing system using handles. This is my first time working with handles.

2. What is the issue?
   The resizing handles resize in the wrong directions for some parts with different orientations
   The resizing handles resize on both directions instead of just one

Here’s the script:
(it’s a local script placed into a ScreenGui in the StarterGui, inside there’s also a ObjectValue named “Part” which I used for testing. Also the parts need to have a BoolValue inside called “CanMove” for them to work with the system)

local plr = game.Players.LocalPlayer
local m = plr:GetMouse()

m.Button1Down:Connect(function()

	if m.Target:FindFirstChild("CanMove") then  ----- can only use parts with a boolvalue inside called "CanMove"
		script.Parent.Part.Value = m.Target
		
		if script.Parent:FindFirstChild("handle") then
			script.Parent.handle:Destroy()
		end
		
			local handle = Instance.new("Handles")
			handle.Parent = script.Parent
			handle.Style = "Resize"
			handle.Name = "handle"
			handle.Adornee = m.Target 
			local lastCFrame = nil

			script.Parent.handle.MouseDrag:Connect(function(face,distance)
				local Direction = Vector3.FromNormalId(face)
				script.Parent.Part.Value.Size = lastCFrame + (Direction * distance)
				print(distance)
			end)

			script.Parent.handle.MouseButton1Down:Connect(function()
				lastCFrame =script.Parent.Part.Value.Size
			end)
	end
end)

[NotkulekGames (BestCatPlayz)]

Hey, NoobdyDev!
I solved the problem and optimized the script, and it now works perfectly fine.

What I fixed;
The biggest problem was that the script only changed the size of the part.
When you only use “Handles” to change the size of a Roblox part, it changes size from the center.

You have to do two things at the same time to make it look like you’re pulling one face outwards;

1. Increase the size.
2. Adjust the CFrame by half the size of the size increase.

local plr = game.Players.LocalPlayer
local m = plr:GetMouse()

m.Button1Down:Connect(function()
	if not m.Target or not m.Target:IsA("BasePart") or not m.Target:FindFirstChild("CanMove") then -- can only use 'parts' with a 'boolvalue' inside called "CanMove"
		return
	end

	script.Parent.Part.Value = m.Target

	if script.Parent:FindFirstChild("handle") then
		script.Parent.handle:Destroy()
	end

	local handle = Instance.new("Handles")
	handle.Adornee = m.Target
	handle.Style = Enum.HandlesStyle.Resize
	handle.Name = "handle"
	handle.Parent = script.Parent

	local lastCFrame = nil
	local lastSize = nil

	handle.MouseButton1Down:Connect(function()
		lastCFrame = script.Parent.Part.Value.CFrame
		lastSize = script.Parent.Part.Value.Size
	end)

	handle.MouseDrag:Connect(function(face, distance)
		if not lastCFrame or not lastSize then return end

		local direction = Vector3.fromNormalId(face)

		local sizeChange = Vector3.new(
			math.abs(direction.X) * distance,
			math.abs(direction.Y) * distance,
			math.abs(direction.Z) * distance
		)

		local newSize = lastSize + sizeChange

		newSize = Vector3.new(
			math.max(0.2, newSize.X),
			math.max(0.2, newSize.Y),
			math.max(0.2, newSize.Z)
		)

		local actualSizeChange = newSize - lastSize
		local positionOffset = direction * (actualSizeChange.X + actualSizeChange.Y + actualSizeChange.Z) / 2

		script.Parent.Part.Value.Size = newSize
		script.Parent.Part.Value.CFrame = lastCFrame * CFrame.new(positionOffset)
	end)

	handle.MouseButton1Up:Connect(function()
		lastCFrame = nil
		lastSize = nil
	end)
end)

[NoobdyDev]

Thanks! The script works great now