local Players = game:GetService("Players")
local RunService = game:GetService("RunService")
local Debris = game:GetService("Debris")
local UIS = game:GetService("UserInputService")

local player = Players.LocalPlayer
local bootsOn = false
local sneaking = false
local iceCooldown = 0
local lastHealth = nil
local damageCooldown = 1.5
local lastDamageTime = 0

-- TOOL
local tool = Instance.new("Tool")
tool.Name = "FrostWalkerBoots"
tool.TextureId = "rbxassetid://97625418048677"
tool.RequiresHandle = true
tool.CanBeDropped = true

local handle = Instance.new("Part")
handle.Name = "Handle"
handle.Size = Vector3.new(1,1,1)
handle.Transparency = 0.5
handle.Material = Enum.Material.Neon
handle.Color = Color3.fromRGB(0,255,255)
handle.Parent = tool
tool.Parent = player:WaitForChild("Backpack")

-- STUD TEXTURE
local function addStudTexture(part)
	for _,face in ipairs({Enum.NormalId.Top, Enum.NormalId.Bottom}) do
		local t = Instance.new("Texture")
		t.Texture = "rbxassetid://1095708"
		t.Face = face
		t.StudsPerTileU = 4
		t.StudsPerTileV = 4
		t.Parent = part
	end
end

-- STORAGE
local bootParts = {}

local function weld(a,b)
	local w = Instance.new("WeldConstraint")
	w.Part0 = a
	w.Part1 = b
	w.Parent = a
end

-- CREATE BOOT ON LIMB (R15)
local function createBootOnLimb(limb)
	if not limb then return end

	local boot = Instance.new("Part")
	boot.Size = limb.Size + Vector3.new(0.15,0.15,0.15)
	boot.Material = Enum.Material.Plastic
	boot.Color = Color3.fromRGB(50,150,255)
	boot.CanCollide = false
	boot.CFrame = limb.CFrame * CFrame.new(0,-0.1,0)
	addStudTexture(boot)
	boot.Parent = limb.Parent
	weld(boot, limb)
	table.insert(bootParts, boot)

	local glint = Instance.new("Part")
	glint.Size = boot.Size + Vector3.new(0.02,0.02,0.02)
	glint.Material = Enum.Material.ForceField
	glint.Transparency = 0.3
	glint.Color = Color3.fromRGB(160,0,255)
	glint.CanCollide = false
	glint.CFrame = boot.CFrame
	glint.Parent = limb.Parent
	weld(glint, boot)
	table.insert(bootParts, glint)
end

-- CREATE BOOTS
local function createBoots(character)
	local humanoid = character:FindFirstChildOfClass("Humanoid")
	if not humanoid then return end

	-- R6
	if humanoid.RigType == Enum.HumanoidRigType.R6 then
		for _,name in ipairs({"Left Leg","Right Leg"}) do
			local leg = character:FindFirstChild(name)
			if leg then
				createBootOnLimb(leg)
			end
		end
	-- R15
	else
		for _,name in ipairs({
			"LeftLowerLeg","LeftFoot",
			"RightLowerLeg","RightFoot"
		}) do
			createBootOnLimb(character:FindFirstChild(name))
		end
	end
end

local function removeBoots()
	for _,p in ipairs(bootParts) do
		if p then p:Destroy() end
	end
	table.clear(bootParts)
end

-- HEALTH BOOST
local function addHealthBoost(h)
	h.MaxHealth += 40
	h.Health += 40
end
local function removeHealthBoost(h)
	h.MaxHealth -= 40
	if h.Health > h.MaxHealth then
		h.Health = h.MaxHealth
	end
end

-- TOOL TOGGLE
tool.Activated:Connect(function()
	local char = player.Character
	local hum = char and char:FindFirstChildOfClass("Humanoid")
	bootsOn = not bootsOn

	if bootsOn then
		createBoots(char)
		if hum then addHealthBoost(hum) end
	else
		removeBoots()
		if hum then removeHealthBoost(hum) end
	end
end)

-- ICE WALK
RunService.Heartbeat:Connect(function(dt)
	if not bootsOn then return end
	iceCooldown -= dt
	if iceCooldown > 0 then return end

	local char = player.Character
	local root = char and char:FindFirstChild("HumanoidRootPart")
	if not root then return end

	local params = RaycastParams.new()
	params.FilterDescendantsInstances = {char}
	params.FilterType = Enum.RaycastFilterType.Blacklist

	local ray = workspace:Raycast(root.Position, Vector3.new(0,-6,0), params)
	if ray and ray.Instance and not ray.Instance.CanCollide then
		local gx = math.floor(root.Position.X/3)*3
		local gz = math.floor(root.Position.Z/3)*3

		local ice = Instance.new("Part")
		ice.Size = Vector3.new(3,3,3)
		ice.Position = Vector3.new(gx+1.5, ray.Position.Y+1.5, gz+1.5)
		ice.Anchored = true
		ice.CanCollide = true
		ice.Material = Enum.Material.Plastic
		ice.Color = Color3.fromRGB(160,230,255)
		ice.Reflectance = 0.4
		addStudTexture(ice)
		ice.Parent = workspace

		Debris:AddItem(ice,4)
		iceCooldown = 0.2
	end
end)

-- DAMAGE FEEDBACK
RunService.Heartbeat:Connect(function()
	local char = player.Character
	local hum = char and char:FindFirstChildOfClass("Humanoid")
	if not hum then return end

	if not lastHealth then
		lastHealth = hum.Health
		return
	end

	if hum.Health < lastHealth and tick()-lastDamageTime > damageCooldown then
		lastDamageTime = tick()

		local h = Instance.new("Highlight")
		h.FillColor = Color3.new(1,0,0)
		h.FillTransparency = 0.5
		h.OutlineTransparency = 1
		h.Parent = char

		local s = Instance.new("Sound")
		s.SoundId = "rbxassetid://102904154168830"
		s.Volume = 1
		s.Parent = char:FindFirstChild("HumanoidRootPart")
		s:Play()

		Debris:AddItem(h,0.3)
		Debris:AddItem(s,2)
	end

	lastHealth = hum.Health
end)

-- DEATH DROP
player.CharacterAdded:Connect(function(char)
	bootsOn = false
	removeBoots()

	char:WaitForChild("Humanoid").Died:Connect(function()
		tool.Parent = workspace
		handle.CFrame = char.HumanoidRootPart.CFrame
		handle.CanCollide = true

		local spin = Instance.new("BodyAngularVelocity")
		spin.AngularVelocity = Vector3.new(0,6,0)
		spin.MaxTorque = Vector3.new(0,math.huge,0)
		spin.Parent = handle
	end)
end)