Help With placement system

[Noskur2]

https://gyazo.com/e9562e8769693b4cdefa1010ffc86363

local brick = Instance.new("Part",workspace)
brick.Anchored = true
SNAP = 2
local M = game.Players.LocalPlayer:GetMouse()
M.TargetFilter = brick
M.Move:Connect(function()
	local CF = CFrame.new(math.floor(M.Hit.X / SNAP + 0.5)* SNAP,math.floor(M.Hit.Y / SNAP + 0.5)* SNAP,math.floor(M.Hit.Z / SNAP + 0.5)* SNAP)
    --print(game.Players.LocalPlayer:GetMouse().Target.Name)
    brick.CFrame = CF
end)
M.Button1Down:Connect(function()
    brick:Clone().Parent = workspace
end)'

Having trouble with math here.
I am a advanced scripter but I am really bad at math
I Don’t know why it keeps phasing into the ground
I have tried changing the 0.5 but that makes it wrose and changes the offset of the brick So please help

[FlammableSnowman]

Creating A Furniture Placement System

This guide was originally written for scriptinghelpers . The original can be found here . One of the most common requests I get for blog post topics are for a decoration placement system that saves. I’ve shied away from this topic in the past as there is no singular “correct” way to do it. That being said, I think it’s a good exercise for all game devs to go through and will potentially place a role in a future blog post I plan to write. In addition to change things up, I’ll also take the ti…

[Locard]

The origin of your part is at its center, so if you want it to not phase through the bottom you have to shift it up by half its height after the initial CF placement.

CF = CF * CFrame.new(0,part.Size.y*.5,0)

[Noskur2]

ok, I’ll check it out thanks. Hope it helps

[Noskur2]

It works great but the Y offset is still a bit off

https://gyazo.com/ffce09cad1a826ceb1bff030c5b0fd18

[Locard]

It looks like your part is bigger than the increment you want. If you switch to a part with a size 2x1x4 then you shouldn’t be seeing that.

I tried your code and the size was 1.2 on the Y for the part created, not 1.

[Noskur2]

Oh yes thanks you I did not see that