Grid snapping system not working for rotated rectangles

[calvin_coco (where)]

After a painful 5 hours of searching, I decided to just replace the code with this:

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…

It may not be the best, but at least it works.

local function calculateGridCFrame(model:Model, position:Vector3, normal:Vector3)
	local plot = workspace.Plots:FindFirstChild(client:GetAttribute('plot'))
	local cf, size = getBoundingBox({plot:FindFirstChild('Base')})
	
	local bounds, m_size = getBoundingBox({model.PrimaryPart})
	
	local lpos = cf:PointToObjectSpace(position) + normal * m_size / 2
	local size2 = (size - m_size) / 2
	
	local x = math.clamp(lpos.X, -size2.X, size2.X)
	local y = math.clamp(lpos.Y, 0, cf.Y + 100) - 1
	local z = math.clamp(lpos.Z, -size2.Z, size2.Z)
	
	local abs_x, abs_y, abs_z = math.abs(x), math.abs(y), math.abs(z)
	local sign_x, sign_y, sign_z = math.sign(x), math.sign(y), math.sign(z)
	
	x = sign_x * (math.round(abs_x) + (size2.X % 1))
	y = sign_y * (math.round(abs_y) + (size2.Y % 1))
	z = sign_z * (math.round(abs_z) + (size2.Z % 1))
	
	return cf * CFrame.new(x, y, z) * orientation
end

...

			while is_placing do
				local dt = task.wait()
				
				local mouse = UserInputService:GetMouseLocation()
				local ray = camera:ViewportPointToRay(mouse.X, mouse.Y)
				
				local params = RaycastParams.new()
				params.FilterType = Enum.RaycastFilterType.Include
				params.FilterDescendantsInstances = {plot}
				
				local result = workspace:Raycast(ray.Origin, ray.Direction.Unit * 1024, params)
				if result then
					bounds:PivotTo(orientation)
					place_cf = calculateGridCFrame(bounds, result.Position, result.Normal)
					
					local cf = pivot:Lerp(place_cf, dt * 15)
					preview:PivotTo(cf)
					
					if (place_cf.Position - cf.Position).Magnitude > 50 then
						cf = place_cf
						preview:PivotTo(place_cf)
					end
					
					pivot = cf
				end
			end