How do I place a part directly in front of another part? (Parts of different sizes)

[officialethanrb (ETHAN)]

I am trying to make a rainbow platform composed of many different parts with different sizes.

The issue is that I am unsure of how to calculate the sizes/positions of the parts to position the next part to be in front of the last part. I tried the following code, but it only works if the parts are of the same size:

local Part = game.Workspace.Worlds.Overworld.ImportantParts.StudParts["Start"]

local Start = game.Workspace.Worlds.Overworld.ImportantParts.StudStart

Part.Position = Start.Position - Vector3.new(0,0,Part.Size.X/2)

I have searched 25+ dev forum posts and even tried the Roblox Assistant, but I have not found any luck with these resources. I may be overlooking it, but any guidance on this issue of mine is greatly appreciated.

[Vreadix]

You should calculate the offset based on the size of each part and subtract it from the position of the previous part to position the next part in front

Edit: try making a variable where you want to stack the parts (you use z axys)

local Part = game.Workspace.Worlds.Overworld.ImportantParts.StudParts["Start"]
local Start = game.Workspace.Worlds.Overworld.ImportantParts.StudStart

local offset = Vector3.new(0, 0, Part.Size.X / 2) -- here you stack the parts along the z-axis
local newPosition = Start.Position - offset

Part.Position = newPosition

This is just an example based on yours

[officialethanrb (ETHAN)]

I have attempted this all day, do you mind sending me a code example?

[officialethanrb (ETHAN)]

I tried your example, and it does not work as I need. Part1 should not overlap with part2. It seems it is positioning the parts based on the pivot point. (Which is not what I need)

[Vreadix]

Then adjust the positioning accordingly.

Instead of this

local offset = Vector3.new(0, 0, Part.Size.X / 2) -- here you stack the parts along the z-axis

Replace it in this variable so they dont overlap, here you check widths of both parts

local offset = Vector3.new(0, 0, Part1.Size.X / 2 + Part2.Size.X / 2) -- offset by the combined widths of both parts

Edit: forget to tell you about making a variable for the other part

[officialethanrb (ETHAN)]

That worked! Thank you for your help with my issue, as I am not the best at calculating positions. Have a blessed day!