How can i only change the first 3 values in cframe without changing the orientation of a part?

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#1

Hey Devs, is there a way to change the only the first 3 arguments in cframe? I assume its by doing substractions,

1 Like
#2

Using CFrame - CFrame.P will allow you to get only orientational value

For example,

Object.CFrame = CFrame.new(#, #, #) * (Object.CFrame - Object.CFrame.Position)
#3

I dont want to change the angles tho i just want to change the item’s coordination x, y, z

#4

cause i’m getting the cframe of a part

#5

This keeps the Angle of the object as is, and only changes positional value

#6

one way is by getting the orientation, and making a new cframe with it, like this:

local xr, yr, zr = cf:ToEulerAnglesYXZ()
local newCF = CFrame.new(newpos)*CFrame.Angles(xr,yr,zr)

Though the answer above by william is probably a better solution, a explanation of it is that you make a new CFrame with the new position, then apply the orientation of the previous cframe to it.

#7

Honestly I’d use @WilliamAlezandro method. since none of the numbers in the orientation are being changed, it’ll stay the same before and after your movement.

#8

Tween.TweenModel(Dummy, (Target.CFrame + Vector3.new(0, Dummy.PrimaryPart.Size.Y / 2, 0) * CFrame.Angles()), TweenInfo.new(SPEED, Enum.EasingStyle.Linear, Enum.EasingDirection.InOut))

Here’s my script i’m not putting arguments into angles so its erroring.

#9 
Tween.TweenModel(Dummy, (CFrame.new(Target.CFrame.Position) * CFrame.new(0, Dummy.PrimaryPart.Size.Y / 2, 0) * (Target.CFrame - Target.CFrame.Position)), TweenInfo.new(SPEED, Enum.EasingStyle.Linear, Enum.EasingDirection.InOut))
1 Like
#10

Still Argument #3 is missing error

#11

It’d be helpful if you post the whole script here, and indicate where the error is coming from

#12 
local ReplicatedStorage = game.ReplicatedStorage
local UserInputService = game:GetService("UserInputService")
local ContextActionService = game.ContextActionService
local Players = game.Players

local Framework = ReplicatedStorage.Framework

local Maid = require(Framework.Main.Maid)
local Tween = require(Framework.Util.Tween)
local PrimaryPart = require(Framework.Util.PrimaryPart)

local Player = Players.LocalPlayer

local GRID_SIZE = 4
local SPEED = 0.05
local DUMMY_TRANSPARENCY = 0.5

local Placement = {}

local PlacementMaid = Maid.new()

function Placement.StartPlacement(Studio, Item)
    local Mouse = Player:GetMouse()
    
    local Dummy = Item:Clone()
    PlacementMaid:GiveTask(Dummy)
    
    PrimaryPart:CreatePrimaryPart(Dummy, GRID_SIZE)
    
    for index, instance in pairs(Dummy:GetDescendants()) do
        if instance:IsA("BasePart") and instance ~= Dummy.PrimaryPart then
            instance.Transparency = DUMMY_TRANSPARENCY
            instance.CanCollide = false
        elseif instance:IsA("Script") or instance:IsA("LocalScript") then
            instance.Disabled = true
        end
    end
    
    local CURRENT_ROTATION = 0
    
    local function Rotate(_, InputState, InputObject)
        if InputState == Enum.UserInputState.Begin then
            CURRENT_ROTATION = CURRENT_ROTATION + 90
            Dummy:SetPrimaryPartCFrame(Dummy.PrimaryPart.CFrame * CFrame.Angles(0, math.rad(CURRENT_ROTATION), 0))
        end
    end
    
    Mouse.Move:Connect(function()
        local Target = Mouse.Target
        local LastTarget
        if Target and Target.Parent and Target.Parent.Name == "FloorGrids" and LastTarget ~= Target then
            LastTarget = Target
            Mouse.TargetFilter = Dummy
            Dummy.Parent = Target
            Tween.TweenModel(Dummy, (CFrame.new(Target.CFrame.Position) * CFrame.new(0, Dummy.PrimaryPart.Size.Y / 2, 0) * CFrame.Angles()), TweenInfo.new(SPEED, Enum.EasingStyle.Linear, Enum.EasingDirection.InOut))
        end 
    end)
 
    ContextActionService:BindAction("Rotate", Rotate, false, Enum.KeyCode.R)
end

function Placement.StopPlacement()
    PlacementMaid:DoCleaning()
end

return Placement

Error coming from Line 55 when i added an empty CFrame.Angles it started erroring

#13

My bad, you have to subtract Position from CFrame itself to retrieve Angles.

local ReplicatedStorage = game.ReplicatedStorage
local UserInputService = game:GetService("UserInputService")
local ContextActionService = game.ContextActionService
local Players = game.Players

local Framework = ReplicatedStorage.Framework

local Maid = require(Framework.Main.Maid)
local Tween = require(Framework.Util.Tween)
local PrimaryPart = require(Framework.Util.PrimaryPart)

local Player = Players.LocalPlayer

local GRID_SIZE = 4
local SPEED = 0.05
local DUMMY_TRANSPARENCY = 0.5

local Placement = {}

local PlacementMaid = Maid.new()

function Placement.StartPlacement(Studio, Item)
    local Mouse = Player:GetMouse()
    
    local Dummy = Item:Clone()
    PlacementMaid:GiveTask(Dummy)
    
    PrimaryPart:CreatePrimaryPart(Dummy, GRID_SIZE)
    
    for index, instance in pairs(Dummy:GetDescendants()) do
        if instance:IsA("BasePart") and instance ~= Dummy.PrimaryPart then
            instance.Transparency = DUMMY_TRANSPARENCY
            instance.CanCollide = false
        elseif instance:IsA("Script") or instance:IsA("LocalScript") then
            instance.Disabled = true
        end
    end
    
    local CURRENT_ROTATION = 0
    
    local function Rotate(_, InputState, InputObject)
        if InputState == Enum.UserInputState.Begin then
            CURRENT_ROTATION = CURRENT_ROTATION + 90
            Dummy:SetPrimaryPartCFrame(Dummy.PrimaryPart.CFrame * CFrame.Angles(0, math.rad(CURRENT_ROTATION), 0))
        end
    end
    
    Mouse.Move:Connect(function()
        local Target = Mouse.Target
        local LastTarget
        if Target and Target.Parent and Target.Parent.Name == "FloorGrids" and LastTarget ~= Target then
            LastTarget = Target
            Mouse.TargetFilter = Dummy
            Dummy.Parent = Target
            Tween.TweenModel(Dummy, (CFrame.new(Target.CFrame.Position) * CFrame.new(0, Dummy.PrimaryPart.Size.Y / 2, 0) * (Target.CFrame - Target.CFrame.Position), TweenInfo.new(SPEED, Enum.EasingStyle.Linear, Enum.EasingDirection.InOut))
        end 
    end)
 
    ContextActionService:BindAction("Rotate", Rotate, false, Enum.KeyCode.R)
end

function Placement.StopPlacement()
    PlacementMaid:DoCleaning()
end

return Placement
1 Like
#14

Yeah but this returns the angle still

#15

Never mind it works! Thank you so much.