local Config = {
	Enabled = true,
	InstantBullet = true,
	FOVCircleEnabled = true,
	FOVSize = 90,
	FOVColor = Color3.fromRGB(255, 255, 255),
	VisibleCheck = false,
	HitPart = "Head", -- Head, Torso, Left Arm, Right Arm, Left Leg, Right Leg
}

local BodyParts = {
	Head = "Head",
	Torso = "Torso",
	LeftArm = "Left Arm",
	RightArm = "Right Arm",
	LeftLeg = "Left Leg",
	RightLeg = "Right Leg",
}

local Players = game:GetService("Players")
local UserInputService = game:GetService("UserInputService")
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local RunService = game:GetService("RunService")

local LocalPlayer = Players.LocalPlayer
local Camera = workspace.CurrentCamera

local FOVCircle = Drawing.new("Circle")
FOVCircle.Visible = Config.FOVCircleEnabled
FOVCircle.Color = Config.FOVColor
FOVCircle.Radius = Config.FOVSize
FOVCircle.Transparency = 1
FOVCircle.Filled = false
FOVCircle.NumSides = 64
FOVCircle.Position = UserInputService:GetMouseLocation()

RunService.PostSimulation:Connect(function()
	FOVCircle.Position = UserInputService:GetMouseLocation()
end)

local function GetClosestTarget()
	local PartName = BodyParts[Config.HitPart] or "Head"
	local MousePos = UserInputService:GetMouseLocation()
	local BestDistance = Config.FOVSize
	local ClosestEntity
	local TargetPart

	local Entities = {}

	for _, Entity in workspace.Spawned.Enemies:GetChildren() do
		if Entity:IsA("Model") then
			Entities[#Entities + 1] = Entity
		end
	end

	for _, Player in Players:GetPlayers() do
		if Player ~= LocalPlayer then
			local Character = Player.Character
			if Character then
				Entities[#Entities + 1] = Character
			end
		end
	end

	for _, Entity in Entities do
		local Part = Entity:FindFirstChild(PartName)
		if not Part then continue end

		local ScreenPos, OnScreen = Camera:WorldToScreenPoint(Part.Position)
		if not OnScreen or ScreenPos.Z <= 0 then continue end

		if Config.VisibleCheck then
			local RayParams = RaycastParams.new()
			RayParams.FilterDescendantsInstances = { workspace.Spawned, LocalPlayer.Character }
			RayParams.FilterType = Enum.RaycastFilterType.Exclude
			local RayResult = workspace:Raycast(Camera.CFrame.Position, Part.Position - Camera.CFrame.Position, RayParams)
			if RayResult and RayResult.Instance ~= Part then continue end
		end

		local ScreenDistance = (Vector2.new(ScreenPos.X, ScreenPos.Y) - MousePos).Magnitude

		if ScreenDistance < BestDistance then
			BestDistance = ScreenDistance
			ClosestEntity = Entity
			TargetPart = Part
		end
	end

	return ClosestEntity, TargetPart
end

if not LocalPlayer:GetAttribute("Loaded") then 
	LocalPlayer:GetAttributeChangedSignal("Loaded"):Wait()
end

local RayenModules = ReplicatedStorage.RayenModules
local RayMouse = require(RayenModules.Shared.RayMouse)
local Projectile = require(RayenModules.Client.Behaviours.BehaviourGunClient.ProjectileEnvConstructors.Projectile)

local CommunicateGun = ReplicatedStorage.RayenEvents.EventsReplication.CommunicateGun

local OldGetMousePos; OldGetMousePos = hookfunction(RayMouse.GetMousePosition, newcclosure(function(...)
	if not Config.Enabled then
		return OldGetMousePos(...)
	end

	local Source = debug.traceback()
	if Source and Source:find("BehaviourGunClient") then
		local _, Part = GetClosestTarget()
		if Part then
			return Part.Position
		end
	end

	return OldGetMousePos(...)
end))

local function HookFireTable(Table)
	local OldFire; OldFire = hookfunction(Table.Fire, newcclosure(function(Rotation, Spread, FiremodeEnv)
		if not Config.Enabled then
			return OldFire(Rotation, Spread, FiremodeEnv)
		end

		local _, Part = GetClosestTarget()

		if Part then
			if Config.InstantBullet then
				CommunicateGun:FireServer("Hit", Part, Part.Position)
				return
			end
			return OldFire(0, 0, FiremodeEnv)
		end

		return OldFire(Rotation, Spread, FiremodeEnv)
	end))
end

local OldProjectile; OldProjectile = hookfunction(Projectile, newcclosure(function(...)
	local Table = OldProjectile(...)
	HookFireTable(Table)
	return Table
end))

local FireModules = filtergc("table", { Keys = { "Fire", "Cleanup" } })
for _, Table in FireModules do
	HookFireTable(Table)
end