-- BACKROOMS INFINITE MAZE LOADER SCRIPT (V4 - REAL FALL GRAVITY)
-- Sistem pembersihan ultra pantas, pemadaman Baseplate, dan jatuhan graviti rawak supaya pemain tidak bertindih di atas kepala.

local Players = game:GetService("Players")
local Lighting = game:GetService("Lighting")

-- KONFIGURASI BACKROOMS
local CHUNK_SIZE = 40 
local WALL_HEIGHT = 12
local WALL_THICKNESS = 1
local RENDER_DISTANCE = 3 

local generatedChunks = {} 
local backroomsFolder

-- 1. PEMBERSIHAN MAP LAMA & BASEPLATE
local function clearMap()
    debug.profilebegin("FastMapClear")
    local children = workspace:GetChildren()
    for i = 1, #children do
        local obj = children[i]
        if not obj:IsA("Camera") and not obj:IsA("Terrain") then
            if not Players:GetPlayerFromCharacter(obj) then
                obj:Destroy()
            end
        end
    end
    debug.profileend()
    print("✓ Map lama dan Baseplate dipadamkan!")
end

-- Fungsi Matematik Deterministik Maze
local function getDeterministicWall(chunkX, chunkZ, wallType)
    local seed = math.sin(chunkX * 12.9898 + chunkZ * 78.233) * 43758.5453
    local pseudoRandom = seed - math.floor(seed)
    if wallType == "North" then return pseudoRandom > 0.45 end
    if wallType == "West" then return pseudoRandom > 0.45 end
    if wallType == "CenterH" then return pseudoRandom > 0.55 end
    if wallType == "CenterV" then return pseudoRandom > 0.55 end
    return false
end

-- 2. PENJANAAN CHUNK
local function generateChunk(chunkX, chunkZ)
    local chunkKey = chunkX .. "," .. chunkZ
    if generatedChunks[chunkKey] then return end 
    generatedChunks[chunkKey] = true

    local chunkModel = Instance.new("Model")
    chunkModel.Name = "Chunk_" .. chunkKey
    chunkModel.Parent = backroomsFolder

    local worldX = chunkX * CHUNK_SIZE
    local worldZ = chunkZ * CHUNK_SIZE

    -- Lantai Karpet Kuning Lembap
    local floor = Instance.new("Part")
    floor.Size = Vector3.new(CHUNK_SIZE, 1, CHUNK_SIZE)
    floor.Position = Vector3.new(worldX, -0.5, worldZ)
    floor.Color = Color3.fromRGB(185, 170, 115) 
    floor.Material = Enum.Material.Fabric
    floor.Anchored = true
    floor.Parent = chunkModel

    -- Siling Beton
    local ceiling = Instance.new("Part")
    ceiling.Size = Vector3.new(CHUNK_SIZE, 1, CHUNK_SIZE)
    ceiling.Position = Vector3.new(worldX, WALL_HEIGHT + 0.5, worldZ)
    ceiling.Color = Color3.fromRGB(200, 195, 180)
    ceiling.Material = Enum.Material.Concrete
    ceiling.Anchored = true
    ceiling.Parent = chunkModel

    -- Fungsi Dinding
    local function createWall(size, position)
        local wall = Instance.new("Part")
        wall.Size = size
        wall.Position = position
        wall.Color = Color3.fromRGB(215, 200, 130) 
        wall.Material = Enum.Material.SmoothPlastic
        wall.Anchored = true
        wall.Parent = chunkModel
    end

    if getDeterministicWall(chunkX, chunkZ, "North") then
        createWall(Vector3.new(CHUNK_SIZE, WALL_HEIGHT, WALL_THICKNESS), Vector3.new(worldX, WALL_HEIGHT/2, worldZ - CHUNK_SIZE/2))
    end
    if getDeterministicWall(chunkX, chunkZ, "West") then
        createWall(Vector3.new(WALL_THICKNESS, WALL_HEIGHT, CHUNK_SIZE), Vector3.new(worldX - CHUNK_SIZE/2, WALL_HEIGHT/2, worldZ))
    end
    if getDeterministicWall(chunkX, chunkZ, "CenterH") then
        createWall(Vector3.new(CHUNK_SIZE/2, WALL_HEIGHT, WALL_THICKNESS), Vector3.new(worldX - CHUNK_SIZE/4, WALL_HEIGHT/2, worldZ))
    end
    if getDeterministicWall(chunkX, chunkZ, "CenterV") then
        createWall(Vector3.new(WALL_THICKNESS, WALL_HEIGHT, CHUNK_SIZE/2), Vector3.new(worldX, WALL_HEIGHT/2, worldZ + CHUNK_SIZE/4))
    end

    -- Lampu Neon
    local lightPart = Instance.new("Part")
    lightPart.Size = Vector3.new(4, 0.2, 2)
    lightPart.Position = Vector3.new(worldX, WALL_HEIGHT - 0.1, worldZ)
    lightPart.Color = Color3.fromRGB(255, 255, 230)
    lightPart.Material = Enum.Material.Neon
    lightPart.Anchored = true
    lightPart.Parent = chunkModel

    local pointLight = Instance.new("PointLight")
    pointLight.Brightness = 2
    pointLight.Range = 30
    pointLight.Color = Color3.fromRGB(255, 255, 200)
    pointLight.Parent = lightPart

    if math.random() > 0.7 then
        task.spawn(function()
            while task.wait(math.random(3, 10)) do
                if not lightPart or not lightPart.Parent then break end
                pointLight.Enabled = false
                lightPart.Material = Enum.Material.SmoothPlastic
                task.wait(math.random(0.1, 0.4))
                pointLight.Enabled = true
                lightPart.Material = Enum.Material.Neon
            end
        end)
    end
end

-- 3. LOAD MAP BACKROOM UTAMA
local function createBackroomsMap()
    backroomsFolder = Instance.new("Model")
    backroomsFolder.Name = "Backrooms_Infinite"
    backroomsFolder.Parent = workspace
    
    local spawnPart = Instance.new("SpawnLocation")
    spawnPart.Name = "MainSpawn"
    spawnPart.Size = Vector3.new(15, 1, 15)
    spawnPart.Position = Vector3.new(0, 0.5, 0)
    spawnPart.Color = Color3.fromRGB(150, 140, 100)
    spawnPart.Material = Enum.Material.Fabric
    spawnPart.Anchored = true
    spawnPart.CanCollide = true
    spawnPart.Parent = backroomsFolder

    for x = -2, 2 do
        for z = -2, 2 do
            generateChunk(x, z)
        end
    end
    
    Lighting.Brightness = 0.8
    Lighting.Ambient = Color3.fromRGB(80, 75, 60)
    Lighting.OutdoorAmbient = Color3.fromRGB(50, 50, 50)
    Lighting.ClockTime = 12
    Lighting.GlobalShadows = true
    
    local ambientSound = Instance.new("Sound")
    ambientSound.Name = "FluorescentHum"
    ambientSound.SoundId = "rbxassetid://9069509268" 
    ambientSound.Volume = 0.4
    ambientSound.Looped = true
    ambientSound.Parent = workspace
    ambientSound:Play()
    
    print("✓ Backrooms Map Yuklendi!")
end

-- 4. TELEPORTASI DAN JATUH DENGAN GRAVITI REALISTIK (Anti-Bertindih)
local function teleportPlayerWithGravity(character)
    local rootPart = character:WaitForChild("HumanoidRootPart", 5)
    local humanoid = character:WaitForChild("Humanoid", 5)
    
    if rootPart and humanoid then
        -- MENGALIS RENTIK: Membuat kedudukan X dan Z rawak (jejari 4 stud) di kawasan spawn
        -- Ketinggian (Y = 10.5) ditetapkan ngam di bawah siling supaya mereka jatuh bebas secara realistik
        local offsetX = math.random(-4, 4)
        local offsetZ = math.random(-4, 4)
        local targetPosition = Vector3.new(offsetX, 10.5, offsetZ)
        
        -- Pindahkan watak dengan PivotTo ke udara
        character:PivotTo(CFrame.new(targetPosition))
        
        -- Memaksa fizik Roblox mengemas kini jatuhan momentum dengan serta-merta
        task.defer(function()
            if rootPart then
                rootPart.AssemblyLinearVelocity = Vector3.new(0, -25, 0) -- Momentum awal jatuhan laju ke bawah karpet
            end
        end)
    end
end

-- Teleport untuk semua pemain sedia ada
local function respawnPlayers()
    for _, player in pairs(Players:GetPlayers()) do
        if player.Character then
            teleportPlayerWithGravity(player.Character)
        end
    end
end

-- 5. RESPON KEMATIAN DENGAN GRAVITI RAWAK
local function setupDeathRespawn()
    local function onCharacterAdded(character)
        task.wait(0.1) -- Tunggu watak dimuatkan sepenuhnya oleh enjin game
        teleportPlayerWithGravity(character)
    end

    local function onPlayerAdded(player)
        player.CharacterAdded:Connect(onCharacterAdded)
    end

    Players.PlayerAdded:Connect(onPlayerAdded)
    
    for _, player in pairs(Players:GetPlayers()) do
        player.CharacterAdded:Connect(onCharacterAdded)
    end
end

-- 6. SISTEM AUTO-GENERATE PANTAS (Semasa Berjalan)
task.spawn(function()
    while task.wait(0.5) do 
        local playersList = Players:GetPlayers()
        for i = 1, #playersList do
            local player = playersList[i]
            if player.Character and player.Character:FindFirstChild("HumanoidRootPart") then
                local hrp = player.Character.HumanoidRootPart
                local currentChunkX = math.floor((hrp.Position.X + CHUNK_SIZE/2) / CHUNK_SIZE)
                local currentChunkZ = math.floor((hrp.Position.Z + CHUNK_SIZE/2) / CHUNK_SIZE)

                for x = -RENDER_DISTANCE, RENDER_DISTANCE do
                    for z = -RENDER_DISTANCE, RENDER_DISTANCE do
                        generateChunk(currentChunkX + x, currentChunkZ + z)
                    end
                end
            end
        end
    end
end)

-- EKSEKUSI UTAMA
print("==========================================")
-- Memulakan sistem muat turun Backrooms
print("==========================================")

clearMap()            
createBackroomsMap()  
respawnPlayers()      
setupDeathRespawn()   

print("==========================================")
print("SISTEM REAL GRAVITY JATUH AKTIF!")
print("==========================================")