How can I make an Over-The-Shoulder System?

Help and Feedback Scripting Support
#1

Hello! I am trying to make my fourth Gunkit. This one will feature an Over-The-Shoulder (OTS) camera system. I got the whole OTS part down, but I want the humanoid to rotate with the camera movement. So far, I have found a partial solution, however, it also rotates upwards and downwards, not only horizontally. I was wondering if there was a way to ignore the axis that is causing it to move up and down?

Here is my code:

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

local Camera = workspace.CurrentCamera
local LocalPlayer = Players.LocalPlayer

local Conn = RunService.RenderStepped:Connect(function()	
	LocalPlayer.Character.HumanoidRootPart.CFrame = ((Camera.CFrame - Camera.CFrame.p) + LocalPlayer.Character.HumanoidRootPart.CFrame.p)
end)

You can see that it works so that the HumanoidRootPart’s CFrame will rotate on all axises, but I just can’t figure out how to ignore a single axis. Any help would be appreciated!

#2

Some weeks ago I made this same script open-sourced with Orientation and EulerAngles, I’ll leave it here in case it can work with your system (The script is located in StarterCharacterScripts):

local Services = {
	["RunService"] = game:GetService("RunService");
    ["UserInputService"] = game:GetService("UserInputService")
}

local Cam = workspace.CurrentCamera
local Humanoid = script.Parent:WaitForChild("Humanoid")
local HRT = script.Parent:WaitForChild("HumanoidRootPart")

local Main = function()
	local X, Y, Z = Cam.CFrame:ToEulerAnglesXYZ()
	
	HRT.Orientation = Vector3.new(HRT.Orientation.X, Y, HRT.Orientation.Z)
	Services.UserInputService.MouseBehavior = Enum.MouseBehavior.LockCenter
end

Services.RunService:BindToRenderStep("Main", Enum.RenderPriority.Camera.Value, Main)
#3

Hmm. It seems that when I move my cursor, I fly into the air.

#4

This shouldn’t happen if you modify the Orientation of the HumanoidRootPart, not the CFrame

If you edit the CFrame it will also take the CFrame’s position of the camera.

#5

I was not using CFrame, I made a new LocalScript and put it into StarterCharacterScripts with the exact code. I have a video if you want.

#6

You just want the Y axis to rotate.

Imagine a Y axis pole coming down from the sky through the entire world. You want your part to rotate about that axis.

local Conn = RunService.RenderStepped:Connect(function()
	local targetPoint = Camera.CFrame * CFrame.new(0,0,-1000)
	local rootPart = LocalPlayer.Character.HumanoidRootPart
	rootPart.CFrame = CFrame.lookAt(
		rootPart.Position,
		Vector3.new(targetPoint.Position.X, rootPart.Position.Y, targetPoint.Position.Z)
	)
end)
#7

The rotation aspect of it does seem to be working, but, when I try to walk, it seems very bumpy and has weird rigid movements.

#8

Most probably because you’re recomposing the CFrame each render frame. A common work-around is a non-replicating BodyGyro.

local rootPart = LocalPlayer.Character.HumanoidRootPart
local gyro = Instance.new("BodyGyro")
gyro.MaxTorque = Vector3.new(0,4e5,0)
gyro.Parent = rootPart

local Conn = RunService.RenderStepped:Connect(function()
	local targetPoint = Camera.CFrame * CFrame.new(0,0,-1000)
	gyro.CFrame = CFrame.lookAt(
		rootPart.Position,
		Vector3.new(targetPoint.Position.X, rootPart.Position.Y, targetPoint.Position.Z)
	)
end)
2 Likes
#9

Thank you! That was very helpful. All I needed to do was decrease D, increase P, and increase the MaxTorque so that it would move instantly.

local Gyro = Instance.new("BodyGyro")
Gyro.MaxTorque = Vector3.new(0,4e8,0)
Gyro.P = 1000000
Gyro.D = 0
Gyro.Parent = HumanoidRootPart

RunService.RenderStepped:Connect(function()
local targetPoint = Camera.CFrame * CFrame.new(0,0,-1000)
Gyro.CFrame = CFrame.lookAt(
	HumanoidRootPart.Position,
	Vector3.new(targetPoint.Position.X, HumanoidRootPart.Position.Y, targetPoint.Position.Z)
)
end)
#10

Thank you all for your help. I have been updating my game and created a new gunkit with a different camera technology. Even though the previous BodyGyro system worked fine, it is a bit better for me to not use legacy movers.

Leaving this here in hopes that it helps anyone else trying to make an Over-The-Shoulder system.

local GameSettings = UserSettings():GetService("UserGameSettings")

local WasInFirst = false
	while Aiming and HasGun == lastGun do -- make sure person is still aiming (rmb down) and they didnt switch weapons
		RunService.RenderStepped:Wait() -- avoid script execution timeout
		
		UserInputService.MouseBehavior = Enum.MouseBehavior.LockCenter -- makes the mouse stay in center while aiming
		GameSettings.RotationType = Enum.RotationType.CameraRelative -- moves character with camera
		
		if Character.Head.LocalTransparencyModifier >= 1 then -- check if in first person
			if not WasInFirst then -- debounce
				WasInFirst = true
				TweenService:Create(Humanoid, TweenInfo.new(0.1, Enum.EasingStyle.Quad, Enum.EasingDirection.InOut, 0, false), {CameraOffset = Vector3.new(0, 0.5)}):Play()
			end
		else
			if WasInFirst then
				WasInFirst = false
				TweenService:Create(Humanoid, TweenInfo.new(0.1, Enum.EasingStyle.Quad, Enum.EasingDirection.InOut, 0, false), {CameraOffset = Vector3.new(CameraSide, 0.5)}):Play()
			end
		end
	end

-- anything after this will happen when no longer aiming