local plrs = game:GetService("Players")
local runSvc = game:GetService("RunService")
local inputSvc = game:GetService("UserInputService")
local repStorage = game:GetService("ReplicatedStorage")
local plr = plrs.LocalPlayer
local cam = workspace.CurrentCamera
local enabled = true
local targetHead = true
local visCheck = false
local fov = 200
local toggleKey = Enum.KeyCode.X

local function getNearestEnemy()
    local char = plr.Character
    if not char or not char:FindFirstChild("HumanoidRootPart") then
        return nil
    end
    local mousePos = inputSvc:GetMouseLocation()
    local currentCam = workspace.CurrentCamera
    if not currentCam then return nil end
    local bestPos = nil
    local bestDist = math.huge
    for _, otherPlr in ipairs(plrs:GetPlayers()) do
        if otherPlr ~= plr then
            local enemyChar = otherPlr.Character
            if enemyChar then
                local hum = enemyChar:FindFirstChildOfClass("Humanoid")
                if hum and hum.Health > 0 then
                    local part = targetHead and enemyChar:FindFirstChild("Head") or enemyChar:FindFirstChild("HumanoidRootPart")
                    if part then
                        local pos = part.Position
                        local screenPos, onScreen = currentCam:WorldToScreenPoint(pos)
                        if onScreen and screenPos.Z > 0 then
                            local dist = (Vector2.new(screenPos.X, screenPos.Y) - mousePos).Magnitude
                            if fov == 0 or dist <= fov then
                                if visCheck then
                                    local root = char.HumanoidRootPart
                                    local origin = root.Position
                                    local rayParams = RaycastParams.new()
                                    rayParams.FilterType = Enum.RaycastFilterType.Exclude
                                    rayParams.FilterDescendantsInstances = {char, cam}
                                    local ray = workspace:Raycast(origin, (pos - origin).Unit * 1000, rayParams)
                                    if not ray or ray.Instance:IsDescendantOf(enemyChar) then
                                        if dist < bestDist then
                                            bestDist = dist
                                            bestPos = pos
                                        end
                                    end
                                else
                                    if dist < bestDist then
                                        bestDist = dist
                                        bestPos = pos
                                    end
                                end
                            end
                        end
                    end
                end
            end
        end
    end
    return bestPos
end

local hooked = setmetatable({}, {__mode = "k"})
local function hookCrosshair(handler)
    if not handler then return end
    if hooked[handler] then return end
    if not handler._oldGetPos then
        handler._oldGetPos = handler.GetPosition
    end
    handler.GetPosition = function(self, ...)
        if enabled then
            local pos = getNearestEnemy()
            if pos then
                return pos, nil
            end
        end
        return handler._oldGetPos(self, ...)
    end
    hooked[handler] = true
end
local function hookAllGuns()
    local gunKit = require(repStorage.Modules.GunKit.GunLocal)
    if gunKit and gunKit.Registry then
        for _, gun in ipairs(gunKit.Registry) do
            if gun.CrosshairHandler then
                hookCrosshair(gun.CrosshairHandler)
            end
        end
    end
end

runSvc.RenderStepped:Connect(function()
    hookAllGuns()
end)
local function onCharAdded()
    task.wait(0.5)
    hookAllGuns()
end
plr.CharacterAdded:Connect(onCharAdded)
if plr.Character then
    onCharAdded()
end
inputSvc.InputBegan:Connect(function(input, gp)
    if gp then return end
    if input.KeyCode == toggleKey then
        enabled = not enabled
        print("silent aim: " .. (enabled and "on" or "off"))
    end
end)