local ws = cloneref(game:GetService("Workspace"))
local plrs = cloneref(game:GetService("Players"))
local rs = cloneref(game:GetService("RunService"))
local lp = plrs.LocalPlayer

local playerCache = {}
local chams = {}

local function addToCache(obj)
    if not obj:IsA("Model") then return end
    local root = obj:FindFirstChild("HumanoidRootPart") or obj:FindFirstChild("LowerTorso")
    if root and obj.Name ~= lp.Name then
        table.insert(playerCache, obj)
    end
end

local function removeFromCache(obj)
    for i = #playerCache, 1, -1 do
        if playerCache[i] == obj then
            table.remove(playerCache, i)
        end
    end
end

local function makeChams(model)
    if chams[model] then return end
    local hl = Instance.new("Highlight")
    hl.FillColor           = Color3.fromRGB(0, 191, 255)
    hl.FillTransparency    = 0.5
    hl.OutlineTransparency = 1
    hl.DepthMode           = Enum.HighlightDepthMode.AlwaysOnTop
    hl.Enabled             = false
    hl.Parent              = model
    chams[model]           = hl
end

local function removeChams(model)
    if chams[model] then
        chams[model]:Destroy()
        chams[model] = nil
    end
end

for _, v in ipairs(ws:GetChildren()) do
    addToCache(v)
end

ws.ChildAdded:Connect(function(obj)
    addToCache(obj)
end)

ws.ChildRemoved:Connect(function(obj)
    removeFromCache(obj)
    removeChams(obj)
end)

rs.RenderStepped:Connect(function()
    for _, model in ipairs(playerCache) do
        local root = model:FindFirstChild("LowerTorso") or model:FindFirstChild("HumanoidRootPart")
        if root then
            if not chams[model] then makeChams(model) end
            chams[model].Enabled = true
        end
    end
end)