Trying to make a custom "engine" of my own

Help and Feedback Scripting Support
#1

I’m currently making an engine where the movement, gravity, basically most things in the player and parts. The player currently moves like it’s ice, but with a nice amount of speed, and some jump power as the gravity is set to 35.07. I’m wondering how to make a flashlight come out the players head, as in surface light. Here’s my script.

local Density = 0.035
local Friction = 0
local Elasticity = 0
local FrictionWeight = 0
local ElasticityWeight = 0

function addNeccesities(char,hum)
	script.flashlight_use:Clone().Parent = char.Torso
	local SurfaceLight = Instance.new("SurfaceLight",char.Torso)
	SurfaceLight.Brightness = 1
end

game.Players.PlayerAdded:Connect(function(plr)
	if plr then
		plr.CharacterAdded:Connect(function()
			for _,v in pairs(workspace:WaitForChild(plr.Name):GetChildren()) do
				local char = workspace:WaitForChild(plr.Name)
				local hum = char.Humanoid
				hum.WalkSpeed = 23
				hum.JumpPower = 25
				hum.MaxSlopeAngle = 70
				addNeccesities(char,hum)
				if v:IsA("Part") then
                    v.CustomPhysicalProperties = PhysicalProperties.new(Density, Friction, Elasticity, FrictionWeight, ElasticityWeight)
				end
			end
		end)
	end
end)

script.RemoteEventPlayer.OnServerEvent:Connect(function(Player,Arg1,Arg2,Arg3)
	if Arg2 == "Flashlight" then
		if Arg3 == true then
			Player.Character.Torso.SurfaceLight.Enabled = true
		elseif Arg3 == false then
			Player.Character.Torso.SurfaceLight.Enabled = false
		end
	end
end)
``` Server

```lua
local uis = game:GetService("UserInputService")
local enabled = false
local plr = game.Players.LocalPlayer

uis.InputBegan:Connect(function(input)
	if input == Enum.KeyCode.F and enabled == false then
		print("KeyPressed", true)
		enabled = true
		workspace.Engine.RemoteEventPlayer:FireServer("Flashlight",true)
	elseif enabled == true then
		enabled = false
		workspace.Engine.RemoteEventPlayer:FireServer("Flashlight",false)
		print("KeyPressed", false)
	end
end)
``` Client
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