local Players = game:GetService("Players")
local RunService = game:GetService("RunService")
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local WorkspaceService = game:GetService("Workspace")
local LocalPlayer = Players.LocalPlayer
local ProcessRemote = ReplicatedStorage:WaitForChild("ACS_Engine"):WaitForChild("Events"):WaitForChild("Process")
local GameSystem = ReplicatedStorage:WaitForChild("GameSystem")

local SilentAimEnabled = true
local HeadChance = 10
local HitChance = 100
local FOVRadius = 180
local NonHeadParts = {"UpperTorso", "LowerTorso", "LeftUpperArm", "RightUpperArm", "LeftLowerArm", "RightLowerArm", "LeftUpperLeg", "RightUpperLeg", "LeftLowerLeg", "RightLowerLeg"}

local FOVCircle = Drawing.new("Circle")
FOVCircle.Thickness = 1
FOVCircle.NumSides = 64
FOVCircle.Filled = false
FOVCircle.Transparency = 0.8
FOVCircle.Color = Color3.fromRGB(240, 60, 60)
FOVCircle.Radius = FOVRadius
FOVCircle.Visible = true

local TargetDot = Drawing.new("Circle")
TargetDot.Thickness = 1
TargetDot.NumSides = 16
TargetDot.Filled = true
TargetDot.Radius = 4
TargetDot.Color = Color3.fromRGB(240, 60, 60)
TargetDot.Visible = false

local function IsEnemy(TargetPlayer)
    if TargetPlayer == LocalPlayer then
        return false
    end
    if GameSystem:GetAttribute("FreeForAll") then
        return true
    end
    if LocalPlayer.Team and TargetPlayer.Team then
        return LocalPlayer.Team ~= TargetPlayer.Team
    end
    return true
end

local function GetAllTargets()
    local Targets = {}
    for _, Player in Players:GetPlayers() do
        if IsEnemy(Player) then
            local Character = Player.Character
            if Character then
                local Humanoid = Character:FindFirstChildOfClass("Humanoid")
                if Humanoid and Humanoid.Health > 0 then
                    if Character:FindFirstChild("Head") then
                        table.insert(Targets, Character)
                    end
                end
            end
        end
    end
    return Targets
end

local function GetTargetPart(Character)
    if math.random(1, 100) <= HeadChance then
        local Head = Character:FindFirstChild("Head")
        if Head then
            return Head
        end
    end
    local Shuffled = table.clone(NonHeadParts)
    for I = #Shuffled, 2, -1 do
        local J = math.random(1, I)
        Shuffled[I], Shuffled[J] = Shuffled[J], Shuffled[I]
    end
    for _, Name in Shuffled do
        local Part = Character:FindFirstChild(Name)
        if Part then
            return Part
        end
    end
    return Character:FindFirstChild("Head")
end

local function GetNearestTarget()
    local Camera = WorkspaceService.CurrentCamera
    if not Camera then
        return nil, nil
    end
    local ViewportSize = Camera.ViewportSize
    local ScreenCenter = Vector2.new(ViewportSize.X / 2, ViewportSize.Y / 2)
    local BestDistance = math.huge
    local BestPart = nil
    local BestModel = nil

    for _, TargetModel in GetAllTargets() do
        local Head = TargetModel:FindFirstChild("Head")
        if Head then
            local ScreenPos, OnScreen = Camera:WorldToViewportPoint(Head.Position)
            if OnScreen then
                local ScreenDist = (Vector2.new(ScreenPos.X, ScreenPos.Y) - ScreenCenter).Magnitude
                if ScreenDist < FOVRadius and ScreenDist < BestDistance then
                    BestDistance = ScreenDist
                    BestModel = TargetModel
                    BestPart = GetTargetPart(TargetModel)
                end
            end
        end
    end

    return BestModel, BestPart
end

local OldNamecall
OldNamecall = hookmetamethod(game, "__namecall", newcclosure(function(Self, ...)
    local Method = getnamecallmethod()

    if SilentAimEnabled and Method == "FireServer" and Self == ProcessRemote and math.random(1, 100) <= HitChance then
        local Tool, RayResult, ShotID = ...
        if typeof(RayResult) == "table" then
            local TargetModel, TargetPart = GetNearestTarget()
            if TargetModel and TargetPart then
                local Humanoid = TargetModel:FindFirstChildOfClass("Humanoid")
                if Humanoid and Humanoid.Health > 0 then
                    local NewRayResult = {
                        ["Instance"] = TargetPart,
                        ["Position"] = TargetPart.Position,
                        ["Material"] = Enum.Material.Plastic,
                        ["Normal"] = Vector3.new(0, 1, 0),
                        ["Distance"] = RayResult.Distance or 10
                    }
                    setnamecallmethod(Method)
                    return OldNamecall(Self, Tool, NewRayResult, ShotID)
                end
            end
        end
    end

    setnamecallmethod(Method)
    return OldNamecall(Self, ...)
end))

RunService.RenderStepped:Connect(function()
    local Camera = WorkspaceService.CurrentCamera
    if not Camera then
        FOVCircle.Visible = false
        TargetDot.Visible = false
        return
    end
    local ViewportSize = Camera.ViewportSize
    local ScreenCenter = Vector2.new(ViewportSize.X / 2, ViewportSize.Y / 2)
    FOVCircle.Position = ScreenCenter
    FOVCircle.Radius = FOVRadius
    FOVCircle.Visible = SilentAimEnabled
    if not SilentAimEnabled then
        TargetDot.Visible = false
        return
    end
    local _, Part = GetNearestTarget()
    if Part then
        local ScreenPos, OnScreen = Camera:WorldToViewportPoint(Part.Position)
        if OnScreen then
            TargetDot.Position = Vector2.new(ScreenPos.X, ScreenPos.Y)
            TargetDot.Visible = true
            return
        end
    end
    TargetDot.Visible = false
end)