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

local player = Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local rootPart = character:WaitForChild("HumanoidRootPart")

-- ==== Earth ====
local earth = Instance.new("Part")
earth.Shape = Enum.PartType.Ball
earth.Anchored = true
earth.CanCollide = false
earth.CastShadow = false
earth.Size = Vector3.new(5000, 5000, 5000)
earth.Position = Vector3.new(0, 0, 0)
earth.Material = Enum.Material.SmoothPlastic
earth.Parent = workspace
for _, face in ipairs(Enum.NormalId:GetEnumItems()) do
    local d = Instance.new("Decal")
    d.Texture = "rbxassetid://453515908"
    d.Face = face
    d.Parent = earth
end

-- ==== Moon ====
local moon = Instance.new("Part")
moon.Shape = Enum.PartType.Ball
moon.Anchored = true
moon.CanCollide = false
moon.CastShadow = false
moon.Size = Vector3.new(1200, 1200, 1200)
moon.Position = Vector3.new(-9000, 0, 0)
moon.Material = Enum.Material.Slate
moon.Parent = workspace
for _, face in ipairs(Enum.NormalId:GetEnumItems()) do
    local d = Instance.new("Decal")
    d.Texture = "rbxassetid://8159103611"
    d.Face = face
    d.Parent = moon
end
local moonFloor = Instance.new("Part")
moonFloor.Size = Vector3.new(1200, 10, 1200)
moonFloor.Anchored = true
moonFloor.Position = moon.Position - Vector3.new(0, 595, 0)
moonFloor.Transparency = 1
moonFloor.CanCollide = false
moonFloor.Color = moon.Color
moonFloor.Parent = workspace

-- ==== Mars ====
local mars = Instance.new("Part")
mars.Shape = Enum.PartType.Ball
mars.Anchored = true
mars.CanCollide = false
mars.CastShadow = false
mars.Size = Vector3.new(2000, 2000, 2000)
mars.Position = earth.Position + Vector3.new(-5000, 800, -20000)
mars.Material = Enum.Material.Slate
mars.Color = Color3.fromRGB(255,165,0)
mars.Parent = workspace
for _, face in ipairs(Enum.NormalId:GetEnumItems()) do
    local d = Instance.new("Decal")
    d.Texture = "rbxassetid://147706174"
    d.Face = face
    d.Parent = mars
end
local marsFloor = Instance.new("Part")
marsFloor.Size = Vector3.new(2000, 10, 2000)
marsFloor.Anchored = true
marsFloor.Position = mars.Position - Vector3.new(0, 1000, 0)
marsFloor.Transparency = 1
marsFloor.CanCollide = false
marsFloor.Color = mars.Color
marsFloor.Parent = workspace

-- ==== Sun ====
local sun = Instance.new("Part")
sun.Shape = Enum.PartType.Ball
sun.Anchored = true
sun.CanCollide = false
sun.CastShadow = false
sun.Size = Vector3.new(20000000, 20000000, 20000000)
sun.Position = Vector3.new(0, 0, 30000)
sun.Material = Enum.Material.Neon
sun.Color = Color3.fromRGB(255,255,0)
sun.Parent = workspace
local sunLight = Instance.new("PointLight")
sunLight.Brightness = 20
sunLight.Range = 2_000_000
sunLight.Parent = sun

-- ==== Mercury ====
local mercury = Instance.new("Part")
mercury.Shape = Enum.PartType.Ball
mercury.Anchored = true
mercury.CanCollide = false
mercury.CastShadow = false
mercury.Size = Vector3.new(800,800,800)
mercury.Position = sun.Position - Vector3.new(20000,0,0)
mercury.Material = Enum.Material.Slate
mercury.Color = Color3.fromRGB(128,128,128)
mercury.Parent = workspace
for _, face in ipairs(Enum.NormalId:GetEnumItems()) do
    local d = Instance.new("Decal")
    d.Texture = "rbxassetid://9228278194"
    d.Face = face
    d.Parent = mercury
end
local mercuryFloor = Instance.new("Part")
mercuryFloor.Size = Vector3.new(800,10,800)
mercuryFloor.Anchored = true
mercuryFloor.Position = mercury.Position - Vector3.new(0,395,0)
mercuryFloor.Transparency = 1
mercuryFloor.CanCollide = false
mercuryFloor.Color = mercury.Color
mercuryFloor.Parent = workspace

-- ==== Venus ====
local venus = Instance.new("Part")
venus.Shape = Enum.PartType.Ball
venus.Anchored = true
venus.CanCollide = false
venus.CastShadow = false
venus.Size = Vector3.new(950, 950, 950)
venus.Position = sun.Position + Vector3.new(35000, 0, 0)
venus.Material = Enum.Material.Slate
venus.Color = Color3.fromRGB(227, 207, 87)
venus.Parent = workspace
for _, face in ipairs(Enum.NormalId:GetEnumItems()) do
    local d = Instance.new("Decal")
    d.Texture = "rbxassetid://137774450"
    d.Face = face
    d.Parent = venus
end
local venusFloor = Instance.new("Part")
venusFloor.Size = Vector3.new(950,10,950)
venusFloor.Anchored = true
venusFloor.Position = venus.Position - Vector3.new(0,475,0)
venusFloor.Transparency = 1
venusFloor.CanCollide = false
venusFloor.Color = venus.Color
venusFloor.Parent = workspace

-- ==== Neptune ====
local neptune = Instance.new("Part")
neptune.Shape = Enum.PartType.Ball
neptune.Anchored = true
neptune.CanCollide = true
neptune.CastShadow = false
neptune.Size = Vector3.new(4000, 4000, 4000)
neptune.Position = earth.Position + Vector3.new(0, 0, -30000)
neptune.Material = Enum.Material.Slate
neptune.Color = Color3.fromRGB(72, 61, 139)
neptune.Parent = workspace
for _, face in ipairs(Enum.NormalId:GetEnumItems()) do
    local d = Instance.new("Decal")
    d.Texture = "rbxassetid://136126670"
    d.Face = face
    d.Parent = neptune
end
local neptuneFloor = Instance.new("Part")
neptuneFloor.Size = Vector3.new(4000, 10, 4000)
neptuneFloor.Anchored = true
neptuneFloor.Position = neptune.Position - Vector3.new(0, 2000, 0)
neptuneFloor.Transparency = 1
neptuneFloor.CanCollide = true
neptuneFloor.Color = neptune.Color
neptuneFloor.Parent = workspace

-- ==== Saturn ====
local saturn = Instance.new("Part")
saturn.Shape = Enum.PartType.Ball
saturn.Anchored = true
saturn.CanCollide = true
saturn.CastShadow = false
saturn.Size = Vector3.new(7000, 7000, 7000)
saturn.Position = neptune.Position + Vector3.new(8000, 0, 0)
saturn.Material = Enum.Material.Sand
saturn.Color = Color3.fromRGB(255, 215, 0)
saturn.Parent = workspace
for _, face in ipairs(Enum.NormalId:GetEnumItems()) do
    local d = Instance.new("Decal")
    d.Texture = "rbxassetid://136126670"
    d.Face = face
    d.Parent = saturn
end
local saturnFloor = Instance.new("Part")
saturnFloor.Size = Vector3.new(7000, 10, 7000)
saturnFloor.Anchored = true
saturnFloor.Position = saturn.Position - Vector3.new(0, 3500, 0)
saturnFloor.Transparency = 1
saturnFloor.CanCollide = false
saturnFloor.Color = saturn.Color
saturnFloor.Parent = workspace

-- ==== Saturn Smoke Ring ====
local smokeCount = 60
local ringRadius = 9500 -- Slightly bigger to match new mesh
local ringHeight = 0
local saturnSmokeParts = {}

for i = 1, smokeCount do
    local angle = (2 * math.pi / smokeCount) * i
    local x = math.cos(angle) * ringRadius
    local z = math.sin(angle) * ringRadius

    local part = Instance.new("Part")
    part.Size = Vector3.new(1,1,1)
    part.Anchored = true
    part.CanCollide = false
    part.Transparency = 1
    part.CFrame = saturn.CFrame * CFrame.new(x, ringHeight, z)
    part.Parent = workspace

    local smoke = Instance.new("Smoke")
    smoke.RiseVelocity = 0
    smoke.Size = 15
    smoke.Opacity = 0.7
    smoke.Color = Color3.fromRGB(255, 215, 0)
    smoke.Parent = part

    table.insert(saturnSmokeParts, part)
end

-- ==== Saturn Ring Mesh (torus) ====
local saturnRing = Instance.new("Part")
saturnRing.Anchored = true
saturnRing.CanCollide = false
saturnRing.CastShadow = false
saturnRing.Position = saturn.Position
saturnRing.Size = Vector3.new(1,1,1)
saturnRing.Transparency = 0.3
saturnRing.Material = Enum.Material.SmoothPlastic
saturnRing.Color = Color3.fromRGB(255, 215, 0) -- Gold yellowish
saturnRing.Parent = workspace

local ringMesh = Instance.new("SpecialMesh")
ringMesh.MeshType = Enum.MeshType.FileMesh
ringMesh.MeshId = "rbxassetid://166706306"
ringMesh.TextureId = "" -- plain color
ringMesh.Scale = Vector3.new(25, 2, 25) -- Bigger to fully surround Saturn
ringMesh.Parent = saturnRing

-- ==== Planet rotations ====
local earthRot = 2
local marsRot = 1
local mercuryRot = 1.5
local venusRot = 1.2
local neptuneRot = 0.8
local saturnRot = 0.7

-- ==== Map hide ====
local hideDistance = 1100
local mapParts = {}

for _, p in ipairs(workspace:GetDescendants()) do
    if p:IsA("BasePart")
    and not p:IsDescendantOf(character)
    and p ~= earth and p ~= moon and p ~= mars and p ~= sun and p ~= mercury and p ~= venus and p ~= neptune and p ~= saturn
    and p ~= moonFloor and p ~= marsFloor and p ~= mercuryFloor and p ~= venusFloor and p ~= neptuneFloor and p ~= saturnFloor and p ~= saturnRing then
        table.insert(mapParts, p)
    end
end

-- ==== Lighting backup ====
local oAmb = Lighting.Ambient
local oOut = Lighting.OutdoorAmbient
local oTime = Lighting.ClockTime

-- ==== Inside checks ====
local function inside(part)
    return (rootPart.Position - part.Position).Magnitude <= part.Size.X/2
end

-- ==== Gas planet warning ====
local function showWarning(text)
    local gui = Instance.new("BillboardGui")
    gui.Adornee = rootPart
    gui.Size = UDim2.new(0, 200, 0, 50)
    gui.StudsOffset = Vector3.new(0, 5, 0)
    gui.AlwaysOnTop = true

    local label = Instance.new("TextLabel")
    label.Size = UDim2.new(1,0,1,0)
    label.BackgroundTransparency = 1
    label.TextColor3 = Color3.fromRGB(255,0,0)
    label.TextStrokeTransparency = 0
    label.TextScaled = true
    label.Text = text
    label.Parent = gui

    gui.Parent = player:WaitForChild("PlayerGui")

    delay(2, function()
        gui:Destroy()
    end)
end

local function onTouched(part, planetName)
    if part == rootPart then
        showWarning("You can't get inside " .. planetName .. " since it's a gas planet.")
    end
end

neptune.Touched:Connect(function(hit) onTouched(hit, "Neptune") end)
saturn.Touched:Connect(function(hit) onTouched(hit, "Saturn") end)

-- ==== Main loop ====
RunService.RenderStepped:Connect(function(dt)
    -- Rotate planets
    earth.CFrame = earth.CFrame * CFrame.Angles(0, math.rad(earthRot*dt), 0)
    mars.CFrame = mars.CFrame * CFrame.Angles(0, math.rad(marsRot*dt), 0)
    mercury.CFrame = mercury.CFrame * CFrame.Angles(0, math.rad(mercuryRot*dt), 0)
    venus.CFrame = venus.CFrame * CFrame.Angles(0, math.rad(venusRot*dt), 0)
    neptune.CFrame = neptune.CFrame * CFrame.Angles(0, math.rad(neptuneRot*dt), 0)
    saturn.CFrame = saturn.CFrame * CFrame.Angles(0, math.rad(saturnRot*dt), 0)
    saturnRing.CFrame = saturn.CFrame

    -- Update smoke ring positions to follow Saturn
    for i, part in ipairs(saturnSmokeParts) do
        local angle = (2 * math.pi / smokeCount) * i
        local x = math.cos(angle) * ringRadius
        local z = math.sin(angle) * ringRadius
        part.CFrame = saturn.CFrame * CFrame.new(x, ringHeight, z)
    end

    -- Distance & inside checks
    local distEarth = (rootPart.Position - earth.Position).Magnitude
    local inEarth = inside(earth)
    local inMoon = inside(moon)
    local inMars = inside(mars)
    local inMercury = inside(mercury)
    local inVenus = inside(venus)
    local inNeptune = inside(neptune)
    local inSaturn = inside(saturn)

    -- Hide planets if inside Earth
    mars.Transparency = inEarth and 1 or 0
    mercury.Transparency = inEarth and 1 or 0
    venus.Transparency = inEarth and 1 or 0
    neptune.Transparency = inEarth and 1 or 0
    saturn.Transparency = inEarth and 1 or 0
    saturnRing.Transparency = inEarth and 0.3 or 0.3
    for _, part in ipairs(saturnSmokeParts) do
        part.Transparency = inEarth and 1 or 0
    end

    -- Hide map parts if far
    if distEarth >= hideDistance then
        for _, p in ipairs(mapParts) do
            p.Transparency = 1
            p.CanCollide = false
        end

        venus.Transparency = 0
        workspace.Gravity = 0

        -- Floors and gravity
        moonFloor.Transparency = inMoon and 0 or 1
        moonFloor.CanCollide = inMoon
        marsFloor.Transparency = inMars and 0 or 1
        marsFloor.CanCollide = inMars
        mercuryFloor.Transparency = inMercury and 0 or 1
        mercuryFloor.CanCollide = inMercury
        venusFloor.Transparency = inVenus and 0 or 1
        venusFloor.CanCollide = inVenus
        neptuneFloor.Transparency = inNeptune and 0 or 1
        neptuneFloor.CanCollide = inNeptune
        saturnFloor.Transparency = inSaturn and 0 or 1
        saturnFloor.CanCollide = inSaturn

        workspace.Gravity = inMoon and 196.2*(1.62/9.81)
                        or inMars and 196.2*0.378
                        or inMercury and 196.2*0.38
                        or inVenus and 196.2*0.904
                        or inNeptune and 196.2*1.14
                        or inSaturn and 196.2*1.06
                        or 0

        Lighting.ClockTime = 0
        Lighting.Ambient = Color3.fromRGB(30,30,40)
        Lighting.OutdoorAmbient = Color3.fromRGB(20,20,30)
    else
        -- Near Earth: show everything
        for _, p in ipairs(mapParts) do
            p.Transparency = 0
            p.CanCollide = true
        end

        moonFloor.Transparency = 1
        marsFloor.Transparency = 1
        mercuryFloor.Transparency = 1
        venusFloor.Transparency = 1
        neptuneFloor.Transparency = 1
        saturnFloor.Transparency = 1

        workspace.Gravity = 196.2

        Lighting.ClockTime = oTime
        Lighting.Ambient = oAmb
        Lighting.OutdoorAmbient = oOut
    end
end)