Need help with building system

[prosterfire911 (ian)]

Hello, I have been trying to code a placement system. It works, however I do not like how it works if that makes sense. My Preview placement part keeps going inside other blocks, and I just want to to be a nice smooth placement, similar to games like Minecraft or The Chosen One - Roblox

My Script:

local Tool = script.Parent
local TweenService = game:GetService("TweenService")
local Players = game:GetService("Players")
local Workspace = game:GetService("Workspace")
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local SoundService = game:GetService("SoundService")
local mouse = Players.LocalPlayer:GetMouse()

local gridSize = 4
local partSize = Vector3.new(gridSize, gridSize, gridSize)
local previewUnion
local folder = Workspace:FindFirstChild("CurrentBlocks")
local toolEquipped = false
local remoteEvent = ReplicatedStorage:FindFirstChild("BlockPlacerRemote")
local soundId = 8265653733  -- ID of the sound to play

if not folder then
	folder = Instance.new("Folder")
	folder.Name = "CurrentBlocks"
	folder.Parent = Workspace
end

-- Function to snap positions to the grid
local function snapToGrid(position)
	return Vector3.new(
		math.round(position.X / gridSize) * gridSize,
		math.round(position.Y / gridSize) * gridSize,
		math.round(position.Z / gridSize) * gridSize
	)
end

-- Function to create and position the preview union
local function createPreviewUnion()
	if previewUnion then
		previewUnion:Destroy()
	end

	-- Clone the union from ReplicatedStorage
	local previewTemplate = ReplicatedStorage:FindFirstChild("Preview")
	if not previewTemplate then
		warn("Preview union not found in ReplicatedStorage")
		return
	end

	previewUnion = previewTemplate:Clone()
	previewUnion.Size = partSize
	previewUnion.CanCollide = false
	previewUnion.Anchored = true
	previewUnion.Parent = Workspace

	-- Position the previewUnion so its center aligns with the grid
	previewUnion.Position = snapToGrid(mouse.Hit.Position) + Vector3.new(0, partSize.Y / 2, 0) -- Centered above ground
end

-- Function to update the position of the preview union
local function updateUnionPosition()
	local targetPosition = snapToGrid(mouse.Hit.Position) + Vector3.new(0, partSize.Y / 2, 0) -- Center of the previewUnion
	local tweenInfo = TweenInfo.new(0, Enum.EasingStyle.Linear, Enum.EasingDirection.InOut) -- 0 seconds duration
	local goal = { Position = targetPosition }
	local tween = TweenService:Create(previewUnion, tweenInfo, goal)
	tween:Play()

	-- Check if a block can be placed
	local canPlace = true
	for _, part in ipairs(Workspace:FindFirstChild("CurrentBlocks"):GetChildren()) do
		if part:IsA("Part") then
			if (part.Position - previewUnion.Position).magnitude < (partSize.X / 2 + partSize.X / 2) then
				canPlace = false
				break
			end
		end
	end

	-- Change color based on whether placement is possible
	if canPlace then
		previewUnion.BrickColor = BrickColor.new("Bright green")
	else
		previewUnion.BrickColor = BrickColor.new("Bright red")
	end
end

-- Function to play the sound effect
local function playSound()
	local sound = Instance.new("Sound")
	sound.SoundId = "rbxassetid://" .. soundId
	sound.Parent = SoundService
	sound:Play()
	-- Clean up the sound after it finishes playing
	sound.Ended:Connect(function()
		sound:Destroy()
	end)
end

Tool.Equipped:Connect(function()
	toolEquipped = true
	createPreviewUnion()
	while Tool.Parent do
		updateUnionPosition()
		wait(0.1)  -- Adjust the wait time to control the update frequency
	end
end)

Tool.Unequipped:Connect(function()
	toolEquipped = false
	if previewUnion then
		previewUnion:Destroy()
	end
end)

mouse.Button1Down:Connect(function()
	if toolEquipped and previewUnion and remoteEvent then
		-- Determine if placement is valid
		local canPlace = previewUnion.BrickColor == BrickColor.new("Bright green")
		local previewOrigin = previewUnion.Position - previewUnion.Size / 2 -- Origin of the previewUnion
		local position = previewOrigin + Vector3.new(partSize.X / 2, partSize.Y / 2, partSize.Z / 2) -- Center the block

		-- Apply a random easing style for tweening
		local easingStyles = Enum.EasingStyle:GetEnumItems()
		local randomEasingStyle = easingStyles[math.random(1, #easingStyles)]
		local tweenInfo = TweenInfo.new(0, randomEasingStyle, Enum.EasingDirection.InOut)
		local goal = { Position = position }
		local tween = TweenService:Create(previewUnion, tweenInfo, goal)
		tween:Play()

		-- Send a request to the server to place the block
		remoteEvent:FireServer(position, canPlace)

		-- Play the sound effect
		playSound()
	end
end)

[prosterfire911 (ian)]

figured it out after realizing someone on this forum also had this problem!