Making it so i cant move or zoom?

Im making a GUI only game, but u can still move around in the game, and zoom in and out. How can I make it so i cant move or zoom at all

change the number 25 to the zoom distance you want

game.StarterPlayer.CameraMaxZoomDistance = 25

this should work, i have used it before

To stop the zoom, I'd set the CameraMaxZoomDistance to be the same number as the CameraMinZoomDistance, this is easily done in the 'StarterPlayer' service. For stopping player movement, I'd just anchor the player's torso (Head is best since r15 has different names and stuff like that), that should do it.

-- for r6
game:GetService("Players").PlayerAdded:connect(function(player)
	player.CharacterAdded:connect(function(character)
		local torso
		repeat
			torso = character:FindFirstChild("Torso")
			wait(0.1)
		until torso ~= nil
		torso.Anchored = true
	end)
end)

-- for r15
game:GetService("Players").PlayerAdded:connect(function(player)
	player.CharacterAdded:connect(function(character)
		local head
		repeat
			torso = character:FindFirstChild("Head")
			wait(0.1)
		until head ~= nil
		head.Anchored = true
	end)
end)

And if you're also wanting to know how to stop the movement of the camera, gimme a comment and I'll try and figure out a solution for ya.