Y coordinate randomly decreasing across functions?

Help and Feedback Scripting Support
#1

This may be a little hard for me to describe, but I’ll try my best!

Basically, I’m working on a placement system for an item using the following code:

local PlacePhone = function()
    if workspace:FindFirstChild(Player.Name.."Phone") == nil then
        local Arrow = game.ReplicatedStorage.Arrow
        local NewArrow= Arrow:Clone()
        NewArrow.Parent = workspace
        NewArrow.Name = Player.Name.."Phone"
    else
        local NewArrow = workspace:FindFirstChild(Player.Name.."Phone")
        if (mouse.Hit.Position-Player.Character:WaitForChild("HumanoidRootPart").Position).Magnitude < 15 then
            NewArrow.Color = Color3.new(0, 1, 0)                
            NewArrow.CFrame = mouse.Hit
            Bad = false
            print(NewArrow.Position)
        else

            NewArrow.Color = Color3.new(1, 0.00784314, 0.0235294)
            NewArrow.CFrame = mouse.Hit
            print("AHHHHHHH")
            Bad = true
        end
    end
end

Where the variable “Bad” determines if it can be placed there or not.

When it is an acceptable spot, it prints the position of the phone.

This is connected via a function that binds it to a renderstep function when they click a UI button:

Player.PlayerGui.RoTokInterface.DanceChoice.Option.Options.Solo.MouseButton1Click:Connect(function()
    RunService:BindToRenderStep("Phone Placement",1,PlacePhone)
    Player.PlayerGui.RoTokInterface.DanceChoice.Option.Visible = false
end)

This all works the way it should. it’s the next function that acts a bit weird; the actual placement of the phone:

UIS.InputBegan:Connect(function(input, _gameProcessed)
    if input.UserInputType == Enum.UserInputType.MouseButton1 and Bad == false then
        Bad = true
        RunService:UnbindFromRenderStep("Phone Placement")
        if workspace:FindFirstChild(Player.Name.."Phone") then
            local position = workspace:FindFirstChild(Player.Name.."Phone").Position
            print(position)
            AngleCheck(position)
            workspace:FindFirstChild(Player.Name.."Phone"):Destroy()
        end
        
    elseif  input.UserInputType == Enum.UserInputType.MouseButton1 and Bad == true then
        Notification("This location is too far away!",Color3.fromRGB(255,0,0))
    end
end)

UIS being UserInputService. Ignore AngleCheck() and Notification().

When I get the position of the phone, it prints something around 27 studs (only on the Y coordinate ) below where it should be (See image, where print “1” is the print from the PlacePhone function and print “2” is from the UIS function)

image
image870×39 5.26 KB

any huge reason for this? I’m so confused lol, there are no other functions that connect or intercept with these 3.

#2

Can you measure the error continuously as you move the phone around / try placing it on different points on a plane? Is it always the same amount of error then?

#3

The error is continuous, though it spawns at random Y coordinates each time below where it should be

#4

Is it possible that there is some small period of time where the part is falling before it is placed / anchored?

#5

I thought about that as well, however the part is both anchored and has collision, if it were to fall, it would land on the baseplate