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

local ESP = {}

-- SETTINGS
local TEAM_CHECK = true
local MAX_STUCK_TIME = 1.5
local TOGGLE_KEY = Enum.KeyCode.RightAlt

local ESP_ENABLED = true

----------------------------------------------------
-- Drawing Helper
----------------------------------------------------

local function newDrawing(type, props)
	local obj = Drawing.new(type)
	for k,v in pairs(props) do
		obj[k] = v
	end
	return obj
end

local function hide(ui)
	ui.Box.Visible = false
	ui.Tracer.Visible = false
	ui.Health.Visible = false
	ui.Name.Visible = false
end

local function hideAll()
	for _,ui in pairs(ESP) do
		hide(ui)
	end
end

----------------------------------------------------
-- Toggle Keybind
----------------------------------------------------

UserInputService.InputBegan:Connect(function(input, gameProcessed)
	if gameProcessed then return end
	
	if input.KeyCode == TOGGLE_KEY then
		ESP_ENABLED = not ESP_ENABLED
		
		if not ESP_ENABLED then
			hideAll()
			print("ESP Disabled")
		else
			print("ESP Enabled")
		end
	end
end)

----------------------------------------------------
-- Create ESP
----------------------------------------------------

local function createESP(player)
	if player == LocalPlayer then return end
	if ESP[player] then return end
	
	ESP[player] = {
		Player = player,
		
		Box = newDrawing("Square", {
			Thickness = 1,
			Filled = false,
			Color = Color3.new(1,1,1),
			Visible = false
		}),
		
		Tracer = newDrawing("Line", {
			Thickness = 1,
			Color = Color3.new(1,1,1),
			Visible = false
		}),
		
		Health = newDrawing("Line", {
			Thickness = 3,
			Visible = false
		}),
		
		Name = newDrawing("Text", {
			Size = 13,
			Center = true,
			Outline = true,
			Font = 2,
			Visible = false
		}),
		
		LastPosition = nil,
		StuckTime = 0
	}
end

for _,player in ipairs(Players:GetPlayers()) do
	createESP(player)
end

Players.PlayerAdded:Connect(createESP)

----------------------------------------------------
-- Workspace Finder
----------------------------------------------------

local function findCharacter(player)
	for _,model in ipairs(workspace:GetChildren()) do
		if model:IsA("Model") and model.Name == player.Name then
			local hum = model:FindFirstChildOfClass("Humanoid")
			local root = model:FindFirstChild("HumanoidRootPart")
			if hum and root then
				return model, hum, root
			end
		end
	end
	return nil
end

----------------------------------------------------
-- Bounding Box
----------------------------------------------------

local function getBox(character)
	local cf, size = character:GetBoundingBox()
	local top = cf.Position + Vector3.new(0, size.Y/2, 0)
	local bottom = cf.Position - Vector3.new(0, size.Y/2, 0)

	local topPos, vis1 = Camera:WorldToViewportPoint(top)
	local bottomPos, vis2 = Camera:WorldToViewportPoint(bottom)

	if not vis1 or not vis2 then
		return nil
	end

	local height = math.abs(topPos.Y - bottomPos.Y)
	local width = height / 2
	
	return Vector2.new(topPos.X - width/2, topPos.Y), width, height
end

----------------------------------------------------
-- Main Loop
----------------------------------------------------

RunService.RenderStepped:Connect(function(dt)
	if not ESP_ENABLED then return end
	
	for player,ui in pairs(ESP) do
		
		if TEAM_CHECK and player.Team == LocalPlayer.Team then
			hide(ui)
			continue
		end
		
		local character, humanoid, root = findCharacter(player)
		
		if not character or not humanoid or humanoid.Health <= 0 then
			hide(ui)
			ui.LastPosition = nil
			ui.StuckTime = 0
			continue
		end
		
		local pos, width, height = getBox(character)
		if not pos then
			hide(ui)
			ui.LastPosition = nil
			ui.StuckTime = 0
			continue
		end
		
		-- Anti-stuck
		if ui.LastPosition then
			if (ui.LastPosition - pos).Magnitude < 1 then
				ui.StuckTime += dt
			else
				ui.StuckTime = 0
			end
			
			if ui.StuckTime >= MAX_STUCK_TIME then
				hide(ui)
				ui.LastPosition = nil
				ui.StuckTime = 0
				continue
			end
		end
		
		ui.LastPosition = pos
		
		-- BOX
		ui.Box.Size = Vector2.new(width, height)
		ui.Box.Position = pos
		ui.Box.Visible = true
		
		-- HEALTH
		local hp = humanoid.Health / humanoid.MaxHealth
		local healthHeight = height * hp
		
		ui.Health.From = Vector2.new(pos.X - 5, pos.Y + height)
		ui.Health.To = Vector2.new(pos.X - 5, pos.Y + height - healthHeight)
		ui.Health.Color = Color3.fromRGB(
			255 - (255*hp),
			255*hp,
			0
		)
		ui.Health.Visible = true
		
		-- TRACER
		ui.Tracer.From = Vector2.new(Camera.ViewportSize.X/2, Camera.ViewportSize.Y)
		ui.Tracer.To = Vector2.new(pos.X + width/2, pos.Y)
		ui.Tracer.Visible = true
		
		-- NAME + DISTANCE
		local myRoot = LocalPlayer.Character and LocalPlayer.Character:FindFirstChild("HumanoidRootPart")
		if myRoot then
			local dist = (myRoot.Position - root.Position).Magnitude
			ui.Name.Text = player.Name .. " [" .. math.floor(dist) .. "m]"
		else
			ui.Name.Text = player.Name
		end
		
		ui.Name.Position = Vector2.new(pos.X + width/2, pos.Y - 15)
		ui.Name.Visible = true
	end
end)