-- Services
local Players = game:GetService("Players")
local RunService = game:GetService("RunService")

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

-- Attachment & LinearVelocity
local attachment = Instance.new("Attachment", root)

local velocity = Instance.new("LinearVelocity")
velocity.Attachment0 = attachment
velocity.RelativeTo = Enum.ActuatorRelativeTo.World
velocity.MaxForce = math.huge
velocity.VectorVelocity = Vector3.zero
velocity.Parent = root

-- 設定値
local speedMultiplier = 0
local verticalSpeed = 0
local verticalInput = 0 -- -1 ～ 1

-- GUI
local gui = Instance.new("ScreenGui", player.PlayerGui)
gui.ResetOnSpawn = false

local frame = Instance.new("Frame", gui)
frame.Size = UDim2.new(0, 240, 0, 200)
frame.Position = UDim2.new(0.5, -120, 0.6, 0)
frame.BackgroundColor3 = Color3.fromRGB(0, 0, 0)
frame.Active = true
frame.Draggable = true

Instance.new("UICorner", frame).CornerRadius = UDim.new(0, 12)

local title = Instance.new("TextLabel", frame)
title.Size = UDim2.new(1, 0, 0, 30)
title.BackgroundTransparency = 1
title.Text = "Speed / Fly Control"
title.TextColor3 = Color3.new(1,1,1)
title.TextScaled = true
title.Font = Enum.Font.SourceSansBold

-- 横移動速度入力
local box = Instance.new("TextBox", frame)
box.Size = UDim2.new(1, -20, 0, 40)
box.Position = UDim2.new(0, 10, 0, 40)
box.BackgroundColor3 = Color3.fromRGB(20, 20, 20)
box.TextColor3 = Color3.new(1,1,1)
box.PlaceholderText = "横移動加速量 (例: 10)"
box.TextScaled = true
box.Font = Enum.Font.SourceSans
Instance.new("UICorner", box).CornerRadius = UDim.new(0, 8)

box.FocusLost:Connect(function()
	speedMultiplier = tonumber(box.Text) or 0
end)

-- 上昇ボタン
local up = Instance.new("TextButton", frame)
up.Size = UDim2.new(0.45, 0, 0, 40)
up.Position = UDim2.new(0.05, 0, 0, 100)
up.Text = "▲"
up.TextScaled = true
up.BackgroundColor3 = Color3.fromRGB(30,30,30)
up.TextColor3 = Color3.new(1,1,1)
Instance.new("UICorner", up)

-- 下降ボタン
local down = Instance.new("TextButton", frame)
down.Size = UDim2.new(0.45, 0, 0, 40)
down.Position = UDim2.new(0.5, 0, 0, 100)
down.Text = "▼"
down.TextScaled = true
down.BackgroundColor3 = Color3.fromRGB(30,30,30)
down.TextColor3 = Color3.new(1,1,1)
Instance.new("UICorner", down)

verticalSpeed = 20

-- 押しっぱなし対応
up.MouseButton1Down:Connect(function()
	verticalInput = 1
end)
up.MouseButton1Up:Connect(function()
	verticalInput = 0
end)

down.MouseButton1Down:Connect(function()
	verticalInput = -1
end)
down.MouseButton1Up:Connect(function()
	verticalInput = 0
end)

-- 移動処理
RunService.RenderStepped:Connect(function()
	local horizontal = humanoid.MoveDirection * speedMultiplier
	local vertical = Vector3.new(0, verticalInput * verticalSpeed, 0)

	velocity.VectorVelocity = horizontal + vertical
end)