Model orientation is lost on part placement function

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#1

I got a function that moves a model that the player is placing when the mouse moves, however the model orientation is lost whenever the model is moved, how could this be fixed?

mouse.Move:Connect(function()
			if placingblock then
				local ignoreList = {toplace, plr.Character}
				local mouseRay = mouse.UnitRay
				local newRay = Ray.new(mouseRay.Origin, mouseRay.Direction.unit * 35)
				target, pos, norm = workspace:FindPartOnRayWithIgnoreList(newRay, ignoreList)
				local RX, RY, RZ = toplace.PrimaryPart.CFrame:ToOrientation()
				local endpos = Vector3.new(math.floor(pos.X),math.floor(pos.Y),math.floor(pos.Z)) + (norm * toplace.PrimaryPart.Size * .5)
				toplace:SetPrimaryPartCFrame(CFrame.new(endpos))
		end
end)

Thanks!

1 Like
#2

CFrames have two arguments, positional and rotational. You’re only setting the positional, so the rotation is set back to default (negative Z axis, I believe).

Get the PrimaryPart’s rotation with local lookVector = toplace.PrimaryPart.CFrame.LookVector, and then set the CFrame as toplace:SetPrimaryPartCFrame(CFrame.new(endpos, lookVector))

#3

I assume that would work if I just used SetPrimaryPartCFrame with the mouse.Hit, however my method of positioning the model seems to break your method and i cannot figure out why exactly…

GIF:
robloxapp-20200606-1257032

1 Like
#4

After struggling with this issue for 2 weeks, i finally came up with a simple good solution

local rotX,rotY,rotZ =  toplace.PrimaryPart.CFrame:ToEulerAnglesXYZ()
toplace:SetPrimaryPartCFrame(CFrame.new(endpos) * CFrame.fromEulerAnglesXYZ(rotX,rotY,rotZ))

This just shows how bad I am with CFrames X(