Block Duplicates When Placed

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#1

This is my script for making a building system and when I place the first block it works normally but when I create a second it duplicates…

I thought the debounce would work, but it didn’t. I created a second debounce and it still didn’t work!

These two are the only scripts, one locally and one server sided

local ReplicatedStorage = game:GetService("ReplicatedStorage")

local buildings = ReplicatedStorage:WaitForChild("Buildings")
local remotes = ReplicatedStorage:WaitForChild("Remotes")
local placeBlockEvent = remotes:WaitForChild("placeBlockEvent")

local tempBlocks = workspace.tempBlocks

local player = game.Players.LocalPlayer
local mouse = player:GetMouse()

local camera = workspace.CurrentCamera
local length = 100

local frame = script.Parent.Frame


local placingBlock = false
local debounce = false

local function placeBlockfunc(blockType)
	frame.Visible = false

	placingBlock = true
	local goodToPlace = false

	local block = buildings:FindFirstChild(blockType):Clone()
	block.Parent = tempBlocks



	game:GetService("RunService").RenderStepped:Connect(function()
		local unitRay = camera:ScreenPointToRay(mouse.X, mouse.Y)
		local raycastParams = RaycastParams.new()
		raycastParams.FilterDescendantsInstances = {player.Character, block}
		raycastParams.FilterType = Enum.RaycastFilterType.Blacklist
		local raycastResult = workspace:Raycast(unitRay.Origin, unitRay.Direction * length, raycastParams)

		if raycastResult then
			block.Position = raycastResult.Position
			goodToPlace = true
		end

		game:GetService("UserInputService").InputBegan:Connect(function(input)
			if input.UserInputType == Enum.UserInputType.MouseButton1 then

				if placingBlock == true then

					if debounce == false then
						debounce = true
						if goodToPlace == true then
							local position1 = block.position
							placingBlock = placeBlockEvent:InvokeServer(blockType, position1)
							if placingBlock == true then
								placingBlock = false
								frame.Visible = true
								debounce = false
								block:Destroy()
							end
						end
					end
				end
			end 
		end) 
	end) 
end

script.Parent.Frame.BigBlockButton.MouseButton1Click:Connect(function()
	local blockType = "BigBlock"
	placeBlockfunc(blockType)
end)

script.Parent.Frame.SmallBlockButton.MouseButton1Click:Connect(function()
	local blockType = "SmallBlock"
	placeBlockfunc(blockType)
end)

This is the code for the server script

local ReplicatedStorage = game:GetService("ReplicatedStorage")

local buildings = ReplicatedStorage:WaitForChild("Buildings")
local remotes = ReplicatedStorage:WaitForChild("Remotes")
local placeBlockEvent = remotes:WaitForChild("placeBlockEvent")

placeBlockEvent.OnServerInvoke = (function(player, blockType, position1)
	local crafted
	local realStructure = buildings:FindFirstChild(blockType):Clone()
	
	if realStructure then
		realStructure.Position = position1
		realStructure.Parent = workspace
		crafted = true
	else
		crafted = false
	end
	
	return crafted
end)
#2

Make sure to disconnect the event once the button has been clicked or cancelled like:

Or else you will have two events and hence two blocks duplicating.

local event

Event:Connect(function()
If event the 
event:Disconnect()
event = nil
end)

I’m on mobile sorry for the formatting.

#3

How would I implement this into my code? And can you send a link explaining to disconnecting on the documentation because I cant seem to find anything about it. Thank you.