universal silent aim for games with raycasting

local Players = game:GetService("Players")
local LocalPlayer = Players.LocalPlayer
local mouse = LocalPlayer:GetMouse()
local Camera = workspace.CurrentCamera
local Debris = game:GetService("Debris")
local UserInputService = game:GetService("UserInputService")
local target = false
local RunService = game:GetService("RunService")


getfenv().lock = "Random" -- Head or Hitbox or Random

fov = 500;

function createcircle()
    local a=Drawing.new('Circle');a.Transparency=1;a.Thickness=1.5;a.Visible=true;a.Color=Color3.fromRGB(0,255,149);a.Filled=false;a.Radius=fov;
    return a;
end;
local fovc = createcircle();
spawn(function()
    RunService:BindToRenderStep("FovCircle",1,function()
        fovc.Position = Vector2.new(mouse.X,mouse.Y)
    end);
end);
function getnearest()
	local nearestmagnitude = math.huge
	local nearestenemy = nil
	local vector = nil
	for i,v in next, Players:GetChildren() do
		if v ~= Players.LocalPlayer then
			if v.Character and  v.Character:FindFirstChild("HumanoidRootPart") and v.Character:FindFirstChild("Humanoid") and v.Character.Humanoid.Health > 0 then
				local vector, onScreen = Camera:WorldToScreenPoint(v.Character["HumanoidRootPart"].Position)
				if onScreen then
					local ray = Ray.new(
					Camera.CFrame.p,
					(v.Character["Head"].Position-Camera.CFrame.p).unit*500
					)
					local ignore = {
					LocalPlayer.Character,
					}
					local hit,position,normal=workspace:FindPartOnRayWithIgnoreList(ray,ignore)
					if hit and hit:FindFirstAncestorOfClass("Model") and Players:FindFirstChild(hit:FindFirstAncestorOfClass("Model").Name)then
						local magnitude = (Vector2.new(mouse.X, mouse.Y) - Vector2.new(vector.X, vector.Y)).magnitude
						if magnitude < nearestmagnitude and magnitude <= fov then
							nearestenemy = v
							nearestmagnitude = magnitude
						end
					end
				end
			end
		end
	end
	return nearestenemy
end


local meta = getrawmetatable(game)
setreadonly(meta, false)
local oldNamecall = meta.__namecall
meta.__namecall = newcclosure(function(...)

	local method = getnamecallmethod()
	local args = {...}
	if string.find(method,'Ray') then
		if target then
		    if args[1].Name ~= "Workspace" then
   		        print(args[1])
   		    end;
			args[2] = Ray.new(workspace.CurrentCamera.CFrame.Position, (target.Position + Vector3.new(0,(workspace.CurrentCamera.CFrame.Position-target.Position).Magnitude/500,0) - workspace.CurrentCamera.CFrame.Position).unit * 5000)
		end
	end
	return oldNamecall(unpack(args))
end)


RunService:BindToRenderStep("SilentAim",1,function()
	if UserInputService:IsMouseButtonPressed(0) and Players.LocalPlayer.Character and Players.LocalPlayer.Character:FindFirstChild("Humanoid") and Players.LocalPlayer.Character.Humanoid.Health > 0 then
		local enemy = getnearest()
		if enemy and enemy.Character and enemy.Character:FindFirstChild("Humanoid") and enemy.Character.Humanoid.Health > 0 then
			local vector, onScreen = Camera:WorldToScreenPoint(enemy.Character["Head"].Position)
			local head = (Vector2.new(mouse.X, mouse.Y) - Vector2.new(vector.X, vector.Y)).magnitude
			local vector, onScreen = Camera:WorldToScreenPoint(enemy.Character["HumanoidRootPart"].Position)
			local hitbox = (Vector2.new(mouse.X, mouse.Y) - Vector2.new(vector.X, vector.Y)).magnitude
			if head <= hitbox then
				magnitude = head
			else
				magnitude = hitbox;
			end;
			if getfenv().lock == "Head" then
				target = workspace[enemy.Name]["Head"]
			else
				if getfenv().lock == "Random" then
					if magnitude == hitbox then
						target = workspace[enemy.Name]["HumanoidRootPart"];
					else
						target = workspace[enemy.Name]["Head"]
					end;
				else
					target = workspace[enemy.Name]["HumanoidRootPart"];
				end;

			end;
		else
			target = nil
		end
	end
end)