Certain Distance Free Cam can go

Help and Feedback Scripting Support
#1

Using the default roblox freecam. I want it to have a certain distance limit it can go away from the player, like if the certain distance if 50 studs. Then if the camera is 50 studs far, it couldn’t go anymore and will just be trapped by something unless it decides to go back.

------------------------------------------------------------------------
-- Freecam
-- Cinematic free camera for spectating and video production.
------------------------------------------------------------------------

local pi    = math.pi
local abs   = math.abs
local clamp = math.clamp
local exp   = math.exp
local rad   = math.rad
local sign  = math.sign
local sqrt  = math.sqrt
local tan   = math.tan

local ContextActionService = game:GetService("ContextActionService")
local Players = game:GetService("Players")
local RunService = game:GetService("RunService")
local StarterGui = game:GetService("StarterGui")
local UserInputService = game:GetService("UserInputService")
local Workspace = game:GetService("Workspace")

local LocalPlayer = Players.LocalPlayer
if not LocalPlayer then
	Players:GetPropertyChangedSignal("LocalPlayer"):Wait()
	LocalPlayer = Players.LocalPlayer
end

local Camera = Workspace.CurrentCamera
Workspace:GetPropertyChangedSignal("CurrentCamera"):Connect(function()
	local newCamera = Workspace.CurrentCamera
	if newCamera then
		Camera = newCamera
	end
end)

------------------------------------------------------------------------

local TOGGLE_INPUT_PRIORITY = Enum.ContextActionPriority.Low.Value
local INPUT_PRIORITY = Enum.ContextActionPriority.High.Value
local FREECAM_MACRO_KB = {Enum.KeyCode.LeftShift, Enum.KeyCode.P}

local NAV_GAIN = Vector3.new(1, 1, 1)*64
local PAN_GAIN = Vector2.new(0.75, 1)*8
local FOV_GAIN = 300

local PITCH_LIMIT = rad(90)

local VEL_STIFFNESS = 1.5
local PAN_STIFFNESS = 1.0
local FOV_STIFFNESS = 4.0

------------------------------------------------------------------------

local Spring = {} do
	Spring.__index = Spring

	function Spring.new(freq, pos)
		local self = setmetatable({}, Spring)
		self.f = freq
		self.p = pos
		self.v = pos*0
		return self
	end

	function Spring:Update(dt, goal)
		local f = self.f*2*pi
		local p0 = self.p
		local v0 = self.v

		local offset = goal - p0
		local decay = exp(-f*dt)

		local p1 = goal + (v0*dt - offset*(f*dt + 1))*decay
		local v1 = (f*dt*(offset*f - v0) + v0)*decay

		self.p = p1
		self.v = v1

		return p1
	end

	function Spring:Reset(pos)
		self.p = pos
		self.v = pos*0
	end
end

------------------------------------------------------------------------

local cameraPos = Vector3.new()
local cameraRot = Vector2.new()
local cameraFov = 0

local velSpring = Spring.new(VEL_STIFFNESS, Vector3.new())
local panSpring = Spring.new(PAN_STIFFNESS, Vector2.new())
local fovSpring = Spring.new(FOV_STIFFNESS, 0)

------------------------------------------------------------------------

local Input = {} do
	local thumbstickCurve do
		local K_CURVATURE = 2.0
		local K_DEADZONE = 0.15

		local function fCurve(x)
			return (exp(K_CURVATURE*x) - 1)/(exp(K_CURVATURE) - 1)
		end

		local function fDeadzone(x)
			return fCurve((x - K_DEADZONE)/(1 - K_DEADZONE))
		end

		function thumbstickCurve(x)
			return sign(x)*clamp(fDeadzone(abs(x)), 0, 1)
		end
	end

	local gamepad = {
		ButtonX = 0,
		ButtonY = 0,
		DPadDown = 0,
		DPadUp = 0,
		ButtonL2 = 0,
		ButtonR2 = 0,
		Thumbstick1 = Vector2.new(),
		Thumbstick2 = Vector2.new(),
	}

	local keyboard = {
		W = 0,
		A = 0,
		S = 0,
		D = 0,
		E = 0,
		Q = 0,
		U = 0,
		H = 0,
		J = 0,
		K = 0,
		I = 0,
		Y = 0,
		Up = 0,
		Down = 0,
		LeftShift = 0,
		RightShift = 0,
	}

	local mouse = {
		Delta = Vector2.new(),
		MouseWheel = 0,
	}

	local NAV_GAMEPAD_SPEED  = Vector3.new(1, 1, 1)
	local NAV_KEYBOARD_SPEED = Vector3.new(1, 1, 1)
	local PAN_MOUSE_SPEED    = Vector2.new(1, 1)*(pi/64)
	local PAN_GAMEPAD_SPEED  = Vector2.new(1, 1)*(pi/8)
	local FOV_WHEEL_SPEED    = 1.0
	local FOV_GAMEPAD_SPEED  = 0.25
	local NAV_ADJ_SPEED      = 0.75
	local NAV_SHIFT_MUL      = 0.25

	local navSpeed = 1

	function Input.Vel(dt)
		navSpeed = clamp(navSpeed + dt*(keyboard.Up - keyboard.Down)*NAV_ADJ_SPEED, 0.01, 4)

		local kGamepad = Vector3.new(
			thumbstickCurve(gamepad.Thumbstick1.X),
			thumbstickCurve(gamepad.ButtonR2) - thumbstickCurve(gamepad.ButtonL2),
			thumbstickCurve(-gamepad.Thumbstick1.Y)
		)*NAV_GAMEPAD_SPEED

		local kKeyboard = Vector3.new(
			keyboard.D - keyboard.A + keyboard.K - keyboard.H,
			keyboard.E - keyboard.Q + keyboard.I - keyboard.Y,
			keyboard.S - keyboard.W + keyboard.J - keyboard.U
		)*NAV_KEYBOARD_SPEED

		local shift = UserInputService:IsKeyDown(Enum.KeyCode.LeftShift) or UserInputService:IsKeyDown(Enum.KeyCode.RightShift)

		return (kGamepad + kKeyboard)*(navSpeed*(shift and NAV_SHIFT_MUL or 1))
	end

	function Input.Pan(dt)
		local kGamepad = Vector2.new(
			thumbstickCurve(gamepad.Thumbstick2.Y),
			thumbstickCurve(-gamepad.Thumbstick2.X)
		)*PAN_GAMEPAD_SPEED
		local kMouse = mouse.Delta*PAN_MOUSE_SPEED
		mouse.Delta = Vector2.new()
		return kGamepad + kMouse
	end

	function Input.Fov(dt)
		local kGamepad = (gamepad.ButtonX - gamepad.ButtonY)*FOV_GAMEPAD_SPEED
		local kMouse = mouse.MouseWheel*FOV_WHEEL_SPEED
		mouse.MouseWheel = 0
		return kGamepad + kMouse
	end

	do
		local function Keypress(action, state, input)
			keyboard[input.KeyCode.Name] = state == Enum.UserInputState.Begin and 1 or 0
			return Enum.ContextActionResult.Sink
		end

		local function GpButton(action, state, input)
			gamepad[input.KeyCode.Name] = state == Enum.UserInputState.Begin and 1 or 0
			return Enum.ContextActionResult.Sink
		end

		local function MousePan(action, state, input)
			local delta = input.Delta
			mouse.Delta = Vector2.new(-delta.y, -delta.x)
			return Enum.ContextActionResult.Sink
		end

		local function Thumb(action, state, input)
			gamepad[input.KeyCode.Name] = input.Position
			return Enum.ContextActionResult.Sink
		end

		local function Trigger(action, state, input)
			gamepad[input.KeyCode.Name] = input.Position.z
			return Enum.ContextActionResult.Sink
		end

		local function MouseWheel(action, state, input)
			mouse[input.UserInputType.Name] = -input.Position.z
			return Enum.ContextActionResult.Sink
		end

		local function Zero(t)
			for k, v in pairs(t) do
				t[k] = v*0
			end
		end

		function Input.StartCapture()
			ContextActionService:BindActionAtPriority("FreecamKeyboard", Keypress, false, INPUT_PRIORITY,
				Enum.KeyCode.W, Enum.KeyCode.U,
				Enum.KeyCode.A, Enum.KeyCode.H,
				Enum.KeyCode.S, Enum.KeyCode.J,
				Enum.KeyCode.D, Enum.KeyCode.K,
				Enum.KeyCode.E, Enum.KeyCode.I,
				Enum.KeyCode.Q, Enum.KeyCode.Y,
				Enum.KeyCode.Up, Enum.KeyCode.Down
			)
			ContextActionService:BindActionAtPriority("FreecamMousePan",          MousePan,   false, INPUT_PRIORITY, Enum.UserInputType.MouseMovement)
			ContextActionService:BindActionAtPriority("FreecamMouseWheel",        MouseWheel, false, INPUT_PRIORITY, Enum.UserInputType.MouseWheel)
			ContextActionService:BindActionAtPriority("FreecamGamepadButton",     GpButton,   false, INPUT_PRIORITY, Enum.KeyCode.ButtonX, Enum.KeyCode.ButtonY)
			ContextActionService:BindActionAtPriority("FreecamGamepadTrigger",    Trigger,    false, INPUT_PRIORITY, Enum.KeyCode.ButtonR2, Enum.KeyCode.ButtonL2)
			ContextActionService:BindActionAtPriority("FreecamGamepadThumbstick", Thumb,      false, INPUT_PRIORITY, Enum.KeyCode.Thumbstick1, Enum.KeyCode.Thumbstick2)
		end

		function Input.StopCapture()
			navSpeed = 1
			Zero(gamepad)
			Zero(keyboard)
			Zero(mouse)
			ContextActionService:UnbindAction("FreecamKeyboard")
			ContextActionService:UnbindAction("FreecamMousePan")
			ContextActionService:UnbindAction("FreecamMouseWheel")
			ContextActionService:UnbindAction("FreecamGamepadButton")
			ContextActionService:UnbindAction("FreecamGamepadTrigger")
			ContextActionService:UnbindAction("FreecamGamepadThumbstick")
		end
	end
end

local function GetFocusDistance(cameraFrame)
	local znear = 0.1
	local viewport = Camera.ViewportSize
	local projy = 2*tan(cameraFov/2)
	local projx = viewport.x/viewport.y*projy
	local fx = cameraFrame.rightVector
	local fy = cameraFrame.upVector
	local fz = cameraFrame.lookVector

	local minVect = Vector3.new()
	local minDist = 512

	for x = 0, 1, 0.5 do
		for y = 0, 1, 0.5 do
			local cx = (x - 0.5)*projx
			local cy = (y - 0.5)*projy
			local offset = fx*cx - fy*cy + fz
			local origin = cameraFrame.p + offset*znear
			local _, hit = Workspace:FindPartOnRay(Ray.new(origin, offset.unit*minDist))
			local dist = (hit - origin).magnitude
			if minDist > dist then
				minDist = dist
				minVect = offset.unit
			end
		end
	end

	return fz:Dot(minVect)*minDist
end

------------------------------------------------------------------------

local function StepFreecam(dt)
	local vel = velSpring:Update(dt, Input.Vel(dt))
	local pan = panSpring:Update(dt, Input.Pan(dt))
	local fov = fovSpring:Update(dt, Input.Fov(dt))

	local zoomFactor = sqrt(tan(rad(70/2))/tan(rad(cameraFov/2)))

	cameraFov = clamp(cameraFov + fov*FOV_GAIN*(dt/zoomFactor), 1, 120)
	cameraRot = cameraRot + pan*PAN_GAIN*(dt/zoomFactor)
	cameraRot = Vector2.new(clamp(cameraRot.x, -PITCH_LIMIT, PITCH_LIMIT), cameraRot.y%(2*pi))

	local cameraCFrame = CFrame.new(cameraPos)*CFrame.fromOrientation(cameraRot.x, cameraRot.y, 0)*CFrame.new(vel*NAV_GAIN*dt)
	cameraPos = cameraCFrame.p

	Camera.CFrame = cameraCFrame
	Camera.Focus = cameraCFrame*CFrame.new(0, 0, -GetFocusDistance(cameraCFrame))
	Camera.FieldOfView = cameraFov
end

------------------------------------------------------------------------

local PlayerState = {} do
	local mouseBehavior
	local mouseIconEnabled
	local cameraType
	local cameraFocus
	local cameraCFrame
	local cameraFieldOfView
	local screenGuis = {}
	local coreGuis = {
		Backpack = true,
		Chat = true,
		Health = true,
		PlayerList = true,
	}
	local setCores = {
		BadgesNotificationsActive = true,
		PointsNotificationsActive = true,
	}

	-- Save state and set up for freecam
	function PlayerState.Push()
		for name in pairs(coreGuis) do
			coreGuis[name] = StarterGui:GetCoreGuiEnabled(Enum.CoreGuiType[name])
			StarterGui:SetCoreGuiEnabled(Enum.CoreGuiType[name], false)
		end
		for name in pairs(setCores) do
			setCores[name] = StarterGui:GetCore(name)
			StarterGui:SetCore(name, false)
		end
		local playergui = LocalPlayer:FindFirstChildOfClass("PlayerGui")
		if playergui then
			for _, gui in pairs(playergui:GetChildren()) do
				if gui:IsA("ScreenGui") and gui.Enabled then
					screenGuis[#screenGuis + 1] = gui
					gui.Enabled = false
				end
			end
		end

		cameraFieldOfView = Camera.FieldOfView
		Camera.FieldOfView = 70

		cameraType = Camera.CameraType
		Camera.CameraType = Enum.CameraType.Custom

		cameraCFrame = Camera.CFrame
		cameraFocus = Camera.Focus

		mouseIconEnabled = UserInputService.MouseIconEnabled
		UserInputService.MouseIconEnabled = false

		mouseBehavior = UserInputService.MouseBehavior
		UserInputService.MouseBehavior = Enum.MouseBehavior.Default
	end

	-- Restore state
	function PlayerState.Pop()
		for name, isEnabled in pairs(coreGuis) do
			StarterGui:SetCoreGuiEnabled(Enum.CoreGuiType[name], isEnabled)
		end
		for name, isEnabled in pairs(setCores) do
			StarterGui:SetCore(name, isEnabled)
		end
		for _, gui in pairs(screenGuis) do
			if gui.Parent then
				gui.Enabled = true
			end
		end

		Camera.FieldOfView = cameraFieldOfView
		cameraFieldOfView = nil

		Camera.CameraType = cameraType
		cameraType = nil

		Camera.CFrame = cameraCFrame
		cameraCFrame = nil

		Camera.Focus = cameraFocus
		cameraFocus = nil

		UserInputService.MouseIconEnabled = mouseIconEnabled
		mouseIconEnabled = nil

		UserInputService.MouseBehavior = mouseBehavior
		mouseBehavior = nil
	end
end

local function StartFreecam()
	local cameraCFrame = Camera.CFrame
	cameraRot = Vector2.new(cameraCFrame:toEulerAnglesYXZ())
	cameraPos = cameraCFrame.p
	cameraFov = Camera.FieldOfView

	velSpring:Reset(Vector3.new())
	panSpring:Reset(Vector2.new())
	fovSpring:Reset(0)

	PlayerState.Push()
	RunService:BindToRenderStep("Freecam", Enum.RenderPriority.Camera.Value, StepFreecam)
	Input.StartCapture()
end

local function StopFreecam()
	Input.StopCapture()
	RunService:UnbindFromRenderStep("Freecam")
	PlayerState.Pop()
end

------------------------------------------------------------------------

do
	local enabled = false

	local function ToggleFreecam()
		if enabled then
			StopFreecam()
		else
			StartFreecam()
		end
		enabled = not enabled
	end

	local function CheckMacro(macro)
		for i = 1, #macro - 1 do
			if not UserInputService:IsKeyDown(macro[i]) then
				return
			end
		end
		ToggleFreecam()
	end

	local function HandleActivationInput(action, state, input)
		if state == Enum.UserInputState.Begin then
			if input.KeyCode == FREECAM_MACRO_KB[#FREECAM_MACRO_KB] then
				CheckMacro(FREECAM_MACRO_KB)
			end
		end
		return Enum.ContextActionResult.Pass
	end

	ContextActionService:BindActionAtPriority("FreecamToggle", HandleActivationInput, false, TOGGLE_INPUT_PRIORITY, FREECAM_MACRO_KB[#FREECAM_MACRO_KB])
end
#2

Are you wanting the freecam to restrict itself from moving?

#3

I don’t know how your script works but you can enable the “freecam” while (camera.cframe.p - player.character.primarypart.position).magnitude <= 50

#4

You don’t need to modify the default camera to achieve this. You just need to set the player’s “CameraMinZoomDistance”.

local players = game:GetService("Players")
local player = players.LocalPlayer
player.CameraMaxZoomDistance = 50

Local script inside StarterPlayerScripts.

1 Like
#5

Are you sure you want Free Cam to have a certain distance limit? Or do you want the default camera to have a certain distance limit? Free Cam is a different type of camera (you press Shift + P to enable it), and it would be difficult to modify it.

#6

No, I want FREE CAM to have a certain distance. Free Cam as in Shift + P for game owners.

#7

No, Free Cam only activates when Shift + P is pressed. and evertime its toggled off the camera is back to normal, I just want to give it a certain distance free cam can go.

#8

You can find the default free cam script when you test the game and go to GUI. and look for “FreeCam” screengui, the script is in there

1 Like
#9

Sorry to bump after 4 months, but if you still need this, and for everyone else looking to make this in the future, Ive managed to achieve this by adding few lines of code to StepFreecam function:

local function StepFreecam(dt)
	local vel = velSpring:Update(dt, Input.Vel(dt))
	local pan = panSpring:Update(dt, Input.Pan(dt))
	local fov = fovSpring:Update(dt, Input.Fov(dt))

	local zoomFactor = sqrt(tan(rad(70/2))/tan(rad(cameraFov/2)))

	cameraFov = clamp(cameraFov + fov*FOV_GAIN*(dt/zoomFactor), 1, 120)
	cameraRot = cameraRot + pan*PAN_GAIN*(dt/zoomFactor)
	cameraRot = Vector2.new(clamp(cameraRot.x, -PITCH_LIMIT, PITCH_LIMIT), cameraRot.y%(2*pi))

	local cameraCFrame = CFrame.new(cameraPos)*CFrame.fromOrientation(cameraRot.x, cameraRot.y, 0)*CFrame.new(vel*NAV_GAIN*dt)
	
	local dir = (cameraCFrame.p - LocalPlayer.Character.HumanoidRootPart.Position)
	
	cameraCFrame = (cameraCFrame-cameraCFrame.p)+LocalPlayer.Character.HumanoidRootPart.Position+dir.Unit*math.min(dir.Magnitude,50)
	cameraPos = cameraCFrame.p

	Camera.CFrame = cameraCFrame
	Camera.Focus = cameraCFrame*CFrame.new(0, 0, -GetFocusDistance(cameraCFrame))
	Camera.FieldOfView = cameraFov
end
1 Like
#10

I’ll test this out later. I’m kinda busy right now

#11

Ok so I forgot about this for like a while because I was working on something. But yeah this works and to change the distance I just change the 50 inside. Thank you so much for this

#12

Hey, I know this probably wont get a reply but, what’s the GetFocusDistance function?

#13

It simply returns the distance from camera to the point in space we are looking at.
By default camera.Focus is set to the player’s character, but when we change into freecam we want the focus to be at what camera is looking at, so we have to set it every frame. GetFocusDistace gives us that distance so we just use it to set the focus to whatever we are looking at.

In the newer FreecamScript they seem to have removed that function though, so you can just set the Camera.Focus to the same thing as Camera.CFrame.

#14

I wasn’t expecting a super quick reply, but thank you very much!