[Need Help] 3rd Person Camera System

Help and Feedback Scripting Support
,
#1

What do you want to achieve?
I’m trying to make a 3rd Person camera system similar to the one that this game has:
Stars Align Engine Demo

What is the issue?
I’m not sure that my code is well optimized and I want to add camera collision so it prevents from going through walls or other obstacles, And I don’t know how to do that…

What solutions have you tried so far?
I’ve been searching on Devforum, YouTube, Reddit… And couldn’t find anything related to my issue.

This is my Code so far:

--|| SERVICES ||--
local RunService = game:GetService("RunService")
local UserInputService = game:GetService("UserInputService")
local Players = game:GetService("Players")

--|| VARIABLES ||--
local Camera = workspace.Camera
local Player = Players.LocalPlayer
local Character = Player.Character or Player.CharacterAdded:Wait()
local HumanoidRootPart = Character:WaitForChild("HumanoidRootPart")
local CameraAngleX, CameraAngleY = 0, 0
local CameraCFrame, CameraFocus, StartCFrame
local CameraOffset = Vector3.new(0, .25, 20)
local Movement = Enum.UserInputType.MouseMovement
local isCursorEnabled = false -- Track cursor visibility state
local mouse = Player:GetMouse()

--|| INITIAL CAMERA SETUP ||--
Camera.CameraType = Enum.CameraType.Scriptable -- Start with the camera in scriptable mode
UserInputService.MouseBehavior = Enum.MouseBehavior.LockCenter -- Lock the cursor in the center
UserInputService.MouseIconEnabled = false

--|| CAMERA UPDATES ||--
RunService.RenderStepped:Connect(function()
	if Camera.CameraType ~= Enum.CameraType.Scriptable then
		Camera.CameraType = Enum.CameraType.Scriptable
	end
	StartCFrame = CFrame.new(HumanoidRootPart.Position) * CFrame.Angles(0, math.rad(CameraAngleX), 0) * CFrame.Angles(math.rad(CameraAngleY), 0, 0)
	CameraCFrame = StartCFrame:ToWorldSpace(CFrame.new(CameraOffset.X, CameraOffset.Y, CameraOffset.Z))
	CameraFocus = StartCFrame:ToWorldSpace(CFrame.new(CameraOffset.X, CameraOffset.Y, -10000))
	Camera.CFrame = CFrame.new(CameraCFrame.Position, CameraFocus.Position)
end)

--|| TOGGLE MOUSE VISIBILITY ||--
UserInputService.InputBegan:Connect(function(InputObject)
	if InputObject.UserInputType == Enum.UserInputType.MouseButton2 then -- Right Mouse Button
		isCursorEnabled = not isCursorEnabled -- Toggle cursor state
		if isCursorEnabled then
			UserInputService.MouseBehavior = Enum.MouseBehavior.Default -- Free cursor
			UserInputService.MouseIconEnabled = true
			--mouse.Icon = "rbxasset://textures/Cursor.png" -- Show cursor icon
		else
			UserInputService.MouseBehavior = Enum.MouseBehavior.LockCenter -- Lock cursor
			UserInputService.MouseIconEnabled = false
			--mouse.Icon = "" -- Hide cursor icon
		end
	end
end)

--|| MOUSE MOVEMENT FOR CAMERA ||--
UserInputService.InputChanged:Connect(function(InputObject)
	if InputObject.UserInputType == Movement and not isCursorEnabled then
		local Delta = InputObject.Delta
		CameraAngleX = CameraAngleX - Delta.X
		CameraAngleY = math.clamp(CameraAngleY - Delta.Y, -75, 75)
	end
end)

Thanks in advance if someone feels kinda to help me out!

#2

there isn’t much to optimize anything, you should remove

and about collision, you need to use raycast. You fire raycast from HumanoidRootPart position into calculated position. That raycast have same distance as camera zoom and if that raycast doesnt hit anything, you set camera position to calculated one, but if did then set position to raycast hit position

#3

Oh, I see, then I will delete those lines.
By the way, would you be so kind to help me with the Raycast? I don’t understand very well how the Raycast works, sorry about that…

#4

raycast is really easy to learn, i recommend watching a short video about it and youll understand it in no time

#5