-- Instant Camera Lock-On Script (No Prediction, No Lerp)
-- Press E to toggle lock-on to the closest enemy's Head near your mouse

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

local LOCAL_PLAYER = Players.LocalPlayer
local CAMERA = Workspace.CurrentCamera

-- === CONFIG ===
local TOGGLE_KEY = Enum.KeyCode.E
local MAX_CURSOR_DISTANCE = 150 -- pixels
-- ==============

local lockOn = false
local target = nil
local renderConn = nil

-- === Helper Functions ===

local function isEnemy(player)
	if not player.Team or not LOCAL_PLAYER.Team then
		return true
	end
	return player.Team ~= LOCAL_PLAYER.Team
end

local function isAlive(player)
	local char = player.Character
	local hum = char and char:FindFirstChildOfClass("Humanoid")
	return hum and hum.Health > 0
end

local function getClosestEnemyHead()
	local mousePos = UserInputService:GetMouseLocation()
	local closest = nil
	local closestDistSq = MAX_CURSOR_DISTANCE * MAX_CURSOR_DISTANCE

	for _, plr in ipairs(Players:GetPlayers()) do
		if plr ~= LOCAL_PLAYER and isEnemy(plr) and isAlive(plr) then
			local char = plr.Character
			local head = char and char:FindFirstChild("Head")
			if head then
				local screenPos, onScreen = CAMERA:WorldToViewportPoint(head.Position)
				if onScreen and screenPos.Z > 0 then
					local dx = mousePos.X - screenPos.X
					local dy = mousePos.Y - screenPos.Y
					local distSq = dx * dx + dy * dy
					if distSq < closestDistSq then
						closestDistSq = distSq
						closest = plr
					end
				end
			end
		end
	end

	return closest
end

local function clearLock()
	lockOn = false
	target = nil
	if renderConn then
		renderConn:Disconnect()
		renderConn = nil
	end
end

local function rotateCameraToTarget()
	if not target or not target.Character then return end
	local head = target.Character:FindFirstChild("Head")
	if not head then return end

	local camPos = CAMERA.CFrame.Position
	CAMERA.CFrame = CFrame.new(camPos, head.Position)
end

local function startLock()
	if renderConn then renderConn:Disconnect() end
	renderConn = RunService.RenderStepped:Connect(function()
		if not target or not isAlive(target) or not isEnemy(target) then
			clearLock()
			return
		end
		rotateCameraToTarget()
	end)
end

local function toggleLock()
	if lockOn then
		clearLock()
	else
		local enemy = getClosestEnemyHead()
		if enemy then
			lockOn = true
			target = enemy
			startLock()
		else
			-- No enemy found
		end
	end
end

-- === Input Bindings ===

UserInputService.InputBegan:Connect(function(input, gp)
	if gp then return end
	if input.KeyCode == TOGGLE_KEY then
		toggleLock()
	end
end)

Players.PlayerRemoving:Connect(function(plr)
	if plr == target then
		clearLock()
	end
end)

LOCAL_PLAYER.CharacterAdded:Connect(clearLock)