"ball that can be cloned from replicated storage and be controlled with W A S D with player camera attached"

-- local script

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local ball = ReplicatedStorage.ball
local player = game.Players.LocalPlayer
local camera = workspace.CurrentCamera

local function onKeyDown(key)
	if key == "w" then
		ball.Velocity = Vector3.new(0,0,10)
	elseif key == "a" then
		ball.Velocity = Vector3.new(-10,0,0)
	elseif key == "s" then
		ball.Velocity = Vector3.new(0,0,-10)
	elseif key == "d" then
		ball.Velocity = Vector3.new(10,0,0)
	end
end

local function onKeyUp(key)
	if key == "w" or key == "a" or key == "s" or key == "d" then
		ball.Velocity = Vector3.new(0,0,0)
	end
end

player.CharacterAdded:Connect(function(char)
	char.ChildAdded:Connect(function(child)
		if child:IsA("Tool") then
			local clone = ball:Clone()
			clone.Parent = workspace
			clone.Position = child.Handle.Position
			camera.CameraSubject = clone
			
			game:GetService("UserInputService").InputBegan:Connect(onKeyDown)
			game:GetService("UserInputService").InputEnded:Connect(onKeyUp)
		end
	end)
end)