local Players = game:GetService("Players")
local UserInputService = game:GetService("UserInputService")
local RunService = game:GetService("RunService")
local Camera = workspace.CurrentCamera
local LocalPlayer = Players.LocalPlayer

local FOVRadius = 200
local AimSpeed = 2 -- lower = faster

local circle
if Drawing then
	circle = Drawing.new("Circle")
	circle.Visible = true
	circle.Color = Color3.fromRGB(255, 0, 0)
	circle.Thickness = 2
	circle.Filled = false
	circle.Radius = FOVRadius
end

local function hasLineOfSight(origin, targetPart)
	local rayParams = RaycastParams.new()
	rayParams.FilterDescendantsInstances = {LocalPlayer.Character, targetPart.Parent}
	rayParams.FilterType = Enum.RaycastFilterType.Blacklist

	local direction = (targetPart.Position - origin)
	local result = workspace:Raycast(origin, direction, rayParams)
	if result and result.Instance then
		if not targetPart:IsDescendantOf(result.Instance) then
			return false
		end
	end
	return true
end

local function getClosestPlayer()
	local mousePos = Camera.ViewportSize / 2
	local closestPlayer, closestDist = nil, math.huge

	for _, player in ipairs(Players:GetPlayers()) do
		if player ~= LocalPlayer and player.Character and player.Character:FindFirstChild("Head") then
			local head = player.Character.Head
			local screenPos, onScreen = Camera:WorldToViewportPoint(head.Position)

			if onScreen then
				local dist = (Vector2.new(screenPos.X, screenPos.Y) - mousePos).Magnitude

				if dist < FOVRadius then
					if hasLineOfSight(Camera.CFrame.Position, head) then
						if dist < closestDist then
							closestDist = dist
							closestPlayer = player
						end
					end
				end
			end
		end
	end

	return closestPlayer
end

local holdingRMB = false

UserInputService.InputBegan:Connect(function(input, gp)
	if gp then return end
	if input.UserInputType == Enum.UserInputType.MouseButton2 then
		holdingRMB = true
	end
end)

UserInputService.InputEnded:Connect(function(input, gp)
	if input.UserInputType == Enum.UserInputType.MouseButton2 then
		holdingRMB = false
	end
end)

local function aimAt(targetPos)
	local mousePos = Camera.ViewportSize / 2
	local screenPos, onScreen = Camera:WorldToViewportPoint(targetPos)
	if not onScreen then return end

	local delta = Vector2.new(screenPos.X, screenPos.Y) - mousePos
	local moveX = delta.X / AimSpeed
	local moveY = delta.Y / AimSpeed

	mousemoverel(moveX, moveY)
end

RunService.RenderStepped:Connect(function()
	local mousePos = Camera.ViewportSize / 2 --dont want to actually get mouse pos yk and most shooters are first person

	if circle then
		circle.Position = Vector2.new(mousePos.X, mousePos.Y)
	end

	if holdingRMB then
		local target = getClosestPlayer()
		if target and target.Character and target.Character:FindFirstChild("Head") then
			aimAt(target.Character.Head.Position)
		end
	end
end)