Server Sided Arm Pointing

Help and Feedback Scripting Support
#1

Hi everyone,

I want the player’s arm to follow their mouse, which I have written a script for. However, the movement is client-side, not server-side, like I’d prefer. I tried modifying the script to use a Remote Event to transfer information, but nothing happens on the server.

Local:

local RunService = game:GetService("RunService")
local Players = game:GetService("Players")
local event = game:GetService("ReplicatedStorage"):WaitForChild("UpdateArmWeld")

local YAW_MIN = math.rad(-70) 
local YAW_MAX = math.rad(70)
local PITCH_MIN = math.rad(-30)
local PITCH_MAX = math.rad(30)

local plr = Players.LocalPlayer
local char = plr.Character or plr.CharacterAdded:Wait()
local mouse = plr:GetMouse()

local tool = script.Parent

wait(2)


local function rotateArm()
	local hrp = char:WaitForChild("HumanoidRootPart")
	local rShoulder = char:WaitForChild("Torso"):WaitForChild("Right Shoulder")

	local jointWorld = rShoulder.Part0.CFrame * rShoulder.C0

	local dirLocal = jointWorld:PointToObjectSpace(mouse.Hit.Position)

	local yaw = math.atan2(-dirLocal.Z, dirLocal.X) 
	local pitch = math.asin(dirLocal.Unit.Y) 

	local yawClamped = math.clamp(yaw, YAW_MIN, YAW_MAX)
	local pitchClamped = math.clamp(pitch, PITCH_MIN, PITCH_MAX)
	rShoulder.Transform = CFrame.fromOrientation(0, yawClamped, pitchClamped + math.pi/2)
	
	event:FireServer(rShoulder, yawClamped, pitchClamped)
	
	print("Fired, info:", rShoulder.Name, yawClamped, pitchClamped)
end

local steppedConn
tool.Equipped:Connect(function()
	steppedConn = RunService.Stepped:Connect(function()
		rotateArm(char)
	end)
end)

tool.Unequipped:Connect(function()
	steppedConn:Disconnect()
end)

Server:

local updateArmWeldEvent = game:GetService("ReplicatedStorage").UpdateArmWeld

wait(2)

updateArmWeldEvent.OnServerEvent:Connect(function(player, rShoulder, yawClamped, pitchClamped)
	rShoulder.Transform = CFrame.fromOrientation(0, yawClamped, pitchClamped + math.pi/2)
	print("Received, info:", player.Name, rShoulder.Name, yawClamped, pitchClamped)
end)

The print debugs work, the info is fired and received, but the server does nothing with it. Can someone help?

Anything is appreciated!

#2

Why are you doing it on the server though? Changes on the client should automatically replicate

1 Like
#3

I thought it was a local script, so it shouldn’t replicate to all clients?

#4

Changes on client dont automatically replicate, its the other way around where anything that happens on the server replicates. @Falcon_Aviator Why do you need it to be on the server?

#5

That way, all players can see the player’s arm rotating.

1 Like
#6

So the print on the serverside, is it recieving and info? Is it the right info?

#7

Yes, and yes.

I can send you the place file to test if you’d like.

#8

Im good for now, thanks! What is rShoulder.Transform? rShoulder is an instance right? I didn’t think there was a property called transform.

#9

I am not sure, to be honest, the script was cobbled together from many dev forum posts. Do you think I should switch to changing C0?

#10

Im not very good with Joints and movement, so im not sure. I want to learn how to use it, is there a name for that kind of thing so i can look it up?

#11

It should just be welds and Motor6Ds

1 Like
#12

event.OnServerEvent:Connect(function(rShoulder, yawClamped, pitchClamped)
print(“Received, info:”, rShoulder.Name, yawClamped, pitchClamped)
rShoulder.Transform = CFrame.fromOrientation(0, yawClamped, pitchClamped + math.pi/2)

event.OnServerEvent:Connect(function(player, rShoulder, yawClamped, pitchClamped)
print(“Received info:”, rShoulder.Name, yawClamped, pitchClamped)
end)

You can only fire a remote event on the client, because the server does not have a mouse.
So you need to make a remote function, and call it on the client with the information from the mouse.
Then the server can apply the changes.