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

local player = Players.LocalPlayer
local camera = workspace.CurrentCamera

local FOV = 120
local LOOK_SPEED = 0.010
local SMOOTHING = 0.25

-- Jitter / Screen Shake Configuration
local JITTER_INTENSITY = 0.02 
local JITTER_SPEED = 25       

local yaw = 0
local pitch = 0
local smoothYaw = 0
local smoothPitch = 0
local lastYaw = 0
local lastPitch = 0

local bob = 0
local rotatingTouch = nil
local renderConnection

local lastMoveState = false
local isDead = false
local deathCamCFrame = nil

-- Post-Processing Setup
local blurEffect = Lighting:FindFirstChild("CameraBlur") or Instance.new("BlurEffect")
blurEffect.Name = "CameraBlur"
blurEffect.Size = 0
blurEffect.Parent = Lighting

local bloomEffect = Lighting:FindFirstChild("CameraBloom") or Instance.new("BloomEffect")
bloomEffect.Name = "CameraBloom"
bloomEffect.Intensity = 1.2
bloomEffect.Size = 24
bloomEffect.Threshold = 0.8
bloomEffect.Parent = Lighting

local colorCorrection = Lighting:FindFirstChild("CameraColor") or Instance.new("ColorCorrectionEffect")
colorCorrection.Name = "CameraColor"
colorCorrection.Saturation = 0
colorCorrection.Parent = Lighting

local function createRealisticGameOverUI()
	local pGui = player:WaitForChild("PlayerGui")
	
	local oldUI = pGui:FindFirstChild("GameOverGui")
	if oldUI then oldUI:Destroy() end
	
	local screenGui = Instance.new("ScreenGui")
	screenGui.Name = "GameOverGui"
	screenGui.ResetOnSpawn = false
	
	-- Dark Vignette/Overlay background
	local background = Instance.new("Frame")
	background.Size = UDim2.new(1, 0, 1, 0)
	background.BackgroundColor3 = Color3.new(0, 0, 0)
	background.BackgroundTransparency = 1
	background.Parent = screenGui
	
	-- Heavy Vignette texture if you have one, otherwise a solid dark fade suffices
	local uigradient = Instance.new("UIGradient")
	uigradient.Color = ColorSequence.new(Color3.new(0,0,0))
	uigradient.Transparency = NumberSequence.new({
		NumberSequenceKeypoint.new(0, 0),
		NumberSequenceKeypoint.new(1, 1)
	})
	
	local textLabel = Instance.new("TextLabel")
	textLabel.Size = UDim2.new(1, 0, 1, 0)
	textLabel.BackgroundTransparency = 1
	textLabel.Text = "GAME OVER"
	textLabel.TextColor3 = Color3.new(0.5, 0, 0) -- Muted crimson red
	textLabel.Font = Enum.Font.SpecialElite or Enum.Font.SourceSansBold
	textLabel.TextSize = 72
	textLabel.TextTransparency = 1
	textLabel.Parent = screenGui
	
	screenGui.Parent = pGui
	return screenGui, background, textLabel
end

local function setupCharacter(character)
	task.wait(2)
	
	isDead = false
	deathCamCFrame = nil
	colorCorrection.Saturation = 0 -- Reset to normal colors

	if inputBeganConnection then inputBeganConnection:Disconnect() end
	if inputChangedConnection then inputChangedConnection:Disconnect() end
	if inputEndedConnection then inputEndedConnection:Disconnect() end
	if diedConnection then diedConnection:Disconnect() end

	local humanoid = character:WaitForChild("Humanoid")
	local root = character:WaitForChild("HumanoidRootPart")
	local head = character:WaitForChild("Head")

	local repairing = false

	task.delay(2, function()
		if character.Parent and not isDead then
			player.CameraMode = Enum.CameraMode.LockFirstPerson
			camera.CameraType = Enum.CameraType.Scriptable
			camera.FieldOfView = FOV
		end
	end)

	camera:GetPropertyChangedSignal("CameraType"):Connect(function()
		if repairing or isDead then return end
		if camera.CameraType ~= Enum.CameraType.Scriptable then
			repairing = true
			task.delay(2, function()
				if character.Parent and not isDead then
					player.CameraMode = Enum.CameraMode.LockFirstPerson
					camera.CameraType = Enum.CameraType.Scriptable
					camera.FieldOfView = FOV
				end
				repairing = false
			end)
		end
	end)

	player.CameraMode = Enum.CameraMode.LockFirstPerson
	camera.CameraType = Enum.CameraType.Scriptable
	camera.FieldOfView = FOV
	humanoid.AutoRotate = false

	-- Realistic Game Over Sequence
	diedConnection = humanoid.Died:Connect(function()
		isDead = true
		
		-- Freeze the camera's rotation context in world space right where they fell
		local lastCamCFrame = camera.CFrame
		-- Drop the height to simulate hitting the deck, tilt it sideways slightly
		deathCamCFrame = CFrame.new(lastCamCFrame.Position - Vector3.new(0, 3.5, 0)) * CFrame.Angles(0, 0, math.rad(45))
		
		local ui, bg, label = createRealisticGameOverUI()
		
		-- Dramatic Post-Processing and UI Fade In
		TweenService:Create(colorCorrection, TweenInfo.new(2, Enum.EasingStyle.Quad, Enum.EasingDirection.Out), {Saturation = -1}):Play() -- Desaturate entirely
		TweenService:Create(blurEffect, TweenInfo.new(3), {Size = 20}):Play() -- Heavy blur eye strain
		TweenService:Create(bg, TweenInfo.new(2), {BackgroundTransparency = 0.2}):Play() -- Fade to near pitch black
		TweenService:Create(label, TweenInfo.new(3, Enum.EasingStyle.Sine, Enum.EasingDirection.In), {TextTransparency = 0}):Play()
		
		local respawnConn
		respawnConn = player.CharacterAdded:Connect(function()
			-- Smoothly clean up and restore vision settings upon respawn
			TweenService:Create(colorCorrection, TweenInfo.new(1), {Saturation = 0}):Play()
			TweenService:Create(blurEffect, TweenInfo.new(1), {Size = 0}):Play()
			TweenService:Create(bg, TweenInfo.new(0.5), {BackgroundTransparency = 1}):Play()
			TweenService:Create(label, TweenInfo.new(0.5), {TextTransparency = 1}):Play()
			
			task.delay(0.5, function() ui:Destroy() end)
			respawnConn:Disconnect()
		end)
	end)

	-- Input System
	inputBeganConnection = UserInputService.InputBegan:Connect(function(input, processed)
		if isDead then return end
		if input.UserInputType == Enum.UserInputType.Touch and not processed then
			if input.Position.X > camera.ViewportSize.X * 0.5 then
				rotatingTouch = input
			end
		end
	end)

	inputChangedConnection = UserInputService.InputChanged:Connect(function(input)
		if isDead then return end
		local delta = Vector2.new(input.Delta.X, input.Delta.Y)

		if input.UserInputType == Enum.UserInputType.MouseMovement then
			yaw -= delta.X * LOOK_SPEED
			pitch -= delta.Y * LOOK_SPEED
		elseif input.UserInputType == Enum.UserInputType.Touch then
			if input == rotatingTouch then
				yaw -= delta.X * LOOK_SPEED
				pitch -= delta.Y * LOOK_SPEED
			end
		end
		pitch = math.clamp(pitch, -1.4, 1.4)
	end)

	inputEndedConnection = UserInputService.InputEnded:Connect(function(input)
		if input == rotatingTouch then
			rotatingTouch = nil
		end
	end)

	-- Visibility Updates
	local function updateVisibility()
		for _, obj in ipairs(character:GetDescendants()) do
			local isInTool = obj:FindFirstAncestorOfClass("Tool") ~= nil

			if obj:IsA("BasePart") then
				local n = obj.Name
				local visible =
					n == "Left Arm" or n == "Right Arm" or
					n == "Left Leg" or n == "Right Leg" or
					n == "LeftHand" or n == "RightHand" or
					n == "LeftLowerArm" or n == "RightLowerArm" or
					n == "LeftUpperArm" or n == "RightUpperArm" or
					n == "LeftFoot" or n == "RightFoot" or
					n == "LeftLowerLeg" or n == "RightLowerLeg" or
					n == "LeftUpperLeg" or n == "RightUpperLeg" or
					n == "Torso" or n == "UpperTorso" or n == "LowerTorso"

				obj.LocalTransparencyModifier = (isInTool or visible) and 0 or 1
			end

			if obj:IsA("ParticleEmitter") or obj:IsA("Beam") or obj:IsA("Trail") then
				local parentPart = obj.Parent

				if parentPart and parentPart:IsA("BasePart") then
					local keepEffect =
						isInTool or 
						parentPart.Name == "Left Arm" or parentPart.Name == "Right Arm" or
						parentPart.Name == "LeftHand" or parentPart.Name == "RightHand" or
						parentPart.Name == "LeftLowerArm" or parentPart.Name == "RightLowerArm" or
						parentPart.Name == "LeftUpperArm" or parentPart.Name == "RightUpperArm" or
						parentPart.Name == "Left Leg" or parentPart.Name == "Right Leg" or
						parentPart.Name == "LeftFoot" or parentPart.Name == "RightFoot" or
						parentPart.Name == "LeftLowerLeg" or parentPart.Name == "RightLowerLeg" or
						parentPart.Name == "LeftUpperLeg" or parentPart.Name == "RightUpperLeg" or
						parentPart.Name == "Torso" or parentPart.Name == "UpperTorso" or parentPart.Name == "LowerTorso"

					obj.Enabled = keepEffect
				end
			end
		end

		for _, acc in ipairs(character:GetChildren()) do
			if acc:IsA("Accessory") then
				local accType = acc.AccessoryType
				local shouldHide =
					accType == Enum.AccessoryType.Hair
					or accType == Enum.AccessoryType.Hat
					or accType == Enum.AccessoryType.Face
					or accType == Enum.AccessoryType.Neck

				for _, obj in ipairs(acc:GetDescendants()) do
					if obj:IsA("BasePart") then
						obj.LocalTransparencyModifier = shouldHide and 1 or 0
					end
				end
			end
		end

		head.LocalTransparencyModifier = 1
		if head:FindFirstChild("FaceFrontAttachment") then
			for _, face in ipairs(head:GetChildren()) do
				if face:IsA("Decal") then face.Transparency = 1 end
			end
		end
	end

	if renderConnection then
		renderConnection:Disconnect()
	end

	renderConnection = RunService.RenderStepped:Connect(function(dt)
		if not character.Parent then return end

		updateVisibility()

		-- Handle the camera if dead
		if isDead and deathCamCFrame then
			camera.CFrame = camera.CFrame:Lerp(deathCamCFrame, dt * 4)
			camera.FieldOfView = FOV
			return
		end

		local isMoving = humanoid.MoveDirection.Magnitude > 0.05

		if isMoving ~= lastMoveState then
			lastMoveState = isMoving
			if isMoving then
				UserInputService.MouseBehavior = Enum.MouseBehavior.LockCenter
			else
				UserInputService.MouseBehavior = Enum.MouseBehavior.Default
			end
		end

		if isMoving then
			local _, cameraYaw, _ = camera.CFrame:ToOrientation()
			root.CFrame = CFrame.new(root.Position) * CFrame.Angles(0, cameraYaw, 0)
			bob += dt * 12
		else
			bob = 0
		end

		local bobOffset = math.sin(bob) * 0.08

		smoothYaw = smoothYaw + (yaw - smoothYaw) * SMOOTHING
		smoothPitch = smoothPitch + (pitch - smoothPitch) * SMOOTHING

		-- Calculate Motion Blur
		local yawDelta = math.abs(smoothYaw - lastYaw)
		local pitchDelta = math.abs(smoothPitch - lastPitch)
		local totalDelta = (yawDelta + pitchDelta) / dt
		blurEffect.Size = math.clamp(totalDelta * 0.5, 0, 24)
		
		lastYaw = smoothYaw
		lastPitch = smoothPitch

		-- Calculate Camera Jitter
		local currentTime = os.clock() * JITTER_SPEED
		local jitterX = math.noise(currentTime, 0, 0) * JITTER_INTENSITY
		local jitterY = math.noise(0, currentTime, 0) * JITTER_INTENSITY
		local jitterZ = math.noise(0, 0, currentTime) * JITTER_INTENSITY
		local jitterCFrame = CFrame.new(jitterX, jitterY, jitterZ)

		local camPos = head.CFrame.Position + Vector3.new(0, bobOffset, 0)
		local camRot = CFrame.Angles(0, smoothYaw, 0) * CFrame.Angles(smoothPitch, 0, 0)

		camera.CFrame = CFrame.new(camPos) * camRot * jitterCFrame
		camera.FieldOfView = FOV
	end)
end

if player.Character then
	setupCharacter(player.Character)
end

player.CharacterAdded:Connect(setupCharacter)