How to make arm rotate as mouse does

[iSyriux (Oneironaut)]

Hello,

What I have here is that it follows the mouse but here are two things i want to fix

1. The arm to rotate relative to the shoulder instead of just the position of the arm
2. The arm to rotate like the velocity of the mouse
   If the mouse goes diagonally left down, then the arm should orient right down

Like this insteaed of just going down without taking into account the velocity of the mouse hit

Also basically I want the arm to go the orientation ofthe look of the mouse which it goes around like a hollow sphere so when there are new objects it doesn’t just update like a very weirdly and stuff

So like a sphere and stuff and so it ignored the parts so it doesnt just go to the part because it appeared and stuff so basically just ignore everything for mouse hit is that possible can i do it pleas eplease please

Hello,
Here’s my script BTW.

local Players = game:GetService("Players")

local RunService = game:GetService("RunService")

local plr = Players.LocalPlayer

local char = plr.Character

local mouse = plr:GetMouse()

local armOffset = char.Torso.CFrame:Inverse() * char["Right Arm"].CFrame

local armWeld = Instance.new("Weld")

armWeld.Part0 = char.Torso

armWeld.Part1 = char["Right Arm"]

armWeld.Parent = char

local camera = game.Workspace.CurrentCamera

local mouseRaycastParams = RaycastParams.new() --workspace

local function getMouseHit(mousepos)

local unitRay = camera:ViewportPointToRay(mousepos.X, mousepos.Y)

return workspace:Raycast(unitRay.Origin, unitRay.Direction * 250, mouseRaycastParams)

end

RunService.RenderStepped:Connect(function()

local cframe = CFrame.new(char.Torso.Position, mouse.Hit.Position) * CFrame.Angles(math.pi/2, 0, 0)

armWeld.C0 = armOffset * char.Torso.CFrame:toObjectSpace(cframe)

end)

It’s late and I don’t know what I’m doing. Explain to me how I can make this work?
Hello,

So this is a diagram
Hello,
This is my other post explaining further in depth how this works BTW.

How to make arm follow mouse and rotating relative to the shoulder position and rotate Y axis locally based on movement of mouse

Hello, I want the arm to move like any normal human arm would. I used your script and modified it for R6 (Here’s my thread) And the arm rotates itself based on the local Y axis and that’s not how a normal human arm would move when pointing side to side. The local Y axis itself doesn’t move unless you want to turn a knob or something. I encountered another issue while making the script R6. The arm rotates relative to its original position instead of the shoulder joint. I basically…

Thought you guys should check it out to be able to help me more, pretty stuck right now.TheInfo I’ve gathered since this post is that it should actually go around in a sphere formation, an infinite amount of circle paths in every orientation basically, yeah, based on the movement of the mouse in the workspace allthewhile ignoring everything in workspace so there are no sudden moves. Gotchya.
Hello,
I tested your script and it does not work.

wait(2)
local Players = game:GetService("Players")
local RunService = game:GetService("RunService")

local plr = Players.LocalPlayer
local char = plr.Character
local mouse = plr:GetMouse()
mouse.TargetFilter = workspace
local armOffset = char.Torso.CFrame:Inverse() * char["Right Arm"].CFrame

local armWeld = Instance.new("Weld")
armWeld.Part0 = char.Torso
armWeld.Part1 = char["Right Arm"]
armWeld.Parent = char
local lastmou
game:GetService("RunService").Heartbeat:Connect(function()
    if char and char:FindFirstChild("Torso") then
        local RightShoulder = char.Torso:WaitForChild("Right Shoulder")
        local X = -(math.asin((mouse.Origin.p - mouse.Hit.p).unit.y))
        local _, Y, Z = RightShoulder.C0:ToEulerAnglesXYZ()
        RightShoulder.C0 = CFrame.new(RightShoulder.C0.Position) * CFrame.Angles(X, Y, Z)
    end
end)

My arm goes inside my torso.
Hello,
I did some math and it seems like I got it with UpVector and RightVector but for some reason setting the c0 of the armweld would make my arm float and it’s very weird because when I rotate my character and make it fall the arm just moves back and it stays there

wait(2)
local Players = game:GetService("Players")
local RunService = game:GetService("RunService")

local plr = Players.LocalPlayer
local char = plr.Character
local mouse = plr:GetMouse()
mouse.TargetFilter = workspace
local armOffset = char.Torso.CFrame:Inverse() * char["Right Arm"].CFrame

local armWeld = Instance.new("Weld")
armWeld.Part0 = char.Torso
armWeld.Part1 = char["Right Arm"]
armWeld.Parent = char
local lastmou
RunService.RenderStepped:Connect(function()
    
    lastmou = mouse.Hit.p
    local e = Instance.new("Part",workspace)
    e.CFrame = CFrame.new(char.Torso.Position+char.Torso.CFrame.RightVector+char.Torso.CFrame.UpVector, mouse.Hit.Position)
    e.Anchored = true
    e.CanCollide = false
    e.Size = Vector3.new(1,1,1)
    game:GetService("Debris"):AddItem(e,.05)
    local cframe = CFrame.new(char.Torso.Position+char.Torso.CFrame.RightVector+char.Torso.CFrame.UpVector, mouse.Hit.Position)
    armWeld.C0 = cframe * CFrame.Angles(math.pi/2, 0, 0)
end)

Very weird indeed
Hello,
Is this what you are talking about when arm pointing upwards have issue?

wait(2)
local Players = game:GetService("Players")
local RunService = game:GetService("RunService")

local plr = Players.LocalPlayer
local char = plr.Character
local mouse = plr:GetMouse()
mouse.TargetFilter = workspace
local armOffset = char.Torso.CFrame:Inverse() * char["Right Arm"].CFrame

local armWeld = Instance.new("Weld")
armWeld.Part0 = char.Torso
armWeld.Part1 = char["Right Arm"]
armWeld.Parent = char
local lastmou
RunService.RenderStepped:Connect(function()
    
    lastmou = mouse.Hit.p
    local e = Instance.new("Part",workspace)
    e.CFrame = CFrame.new(char.Torso.Position, mouse.Hit.Position)
    e.Anchored = true
    e.CanCollide = false
    e.Size = Vector3.new(1,1,1)
    game:GetService("Debris"):AddItem(e,.05)
    local cframe = CFrame.new(char.Torso.Position, mouse.Hit.Position) * CFrame.Angles(math.pi/2, 0, 0)
    armWeld.C0 = armOffset * char.Torso.CFrame:toObjectSpace(cframe)
end)

I have no idea how to fix it and if you could please help me that would be fine
- Br, iSyriux

[iSyriux (Oneironaut)]

Hello,
Anyone there? Why is no one helping me?

[Icey_CD (Icey)]

Instead of changing the Right Arm’s rotation try the Right Shoulder Motor6D rotation.

[iSyriux (Oneironaut)]

Hello,
How would I do that? How would I be able to calculate what to set the Motor6D rotation?
All hard questions in life

[PhAnToMjose4605 (mayday)]

One simpler way of doing that would be using weld constraints and cloned parts.

So one of my theoretical ideas is using renderstepped to set the position of an ‘origin’ part. So what we would do is, make a new cframe and set the cframe’s position to right upper arm’s position + rightupper arm’s size/2 in height (which would be the right shoulder)

So when I click a point using the mouse I’ll make the cframe look at the point and its position be as stated above. So after this you’ll be disabling the right arm’s motor6D and weldconstrainting it to the ‘origin’ part.

I’ll send you a working script when I get home.