-- Universal Rainbow Dash - Toggle Mode (2026 Edition)
-- Press E or click button to START/STOP Dash
-- Limited to ~10 studs TOTAL distance
-- Leaves rainbow trail (~1.8s duration)
-- Works on all executors

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

local player = Players.LocalPlayer
local DASH_MAX_DISTANCE = 10      -- Total max distance in studs
local DASH_SPEED = 120            -- Speed (studs/sec)
local TRAIL_DURATION = 1.8

local isDashing = false
local totalTraveled = 0
local startPos = nil
local linVel = nil
local dashConnection = nil

-- Rainbow colors
local rainbowColors = {
    Color3.fromRGB(255, 0, 0),
    Color3.fromRGB(255, 127, 0),
    Color3.fromRGB(255, 255, 0),
    Color3.fromRGB(0, 255, 0),
    Color3.fromRGB(0, 0, 255),
    Color3.fromRGB(75, 0, 130),
    Color3.fromRGB(148, 0, 211)
}

-- ────────────────────────────────────────────────
--                GUI Setup
-- ────────────────────────────────────────────────

local ScreenGui = Instance.new("ScreenGui")
ScreenGui.Name = "RainbowDashGUI"
ScreenGui.ResetOnSpawn = false
ScreenGui.Parent = player:WaitForChild("PlayerGui")

local MainFrame = Instance.new("Frame")
MainFrame.Name = "MainFrame"
MainFrame.Parent = ScreenGui
MainFrame.BackgroundColor3 = Color3.fromRGB(35, 35, 45)
MainFrame.BorderSizePixel = 0
MainFrame.Position = UDim2.new(0.02, 0, 0.3, 0)
MainFrame.Size = UDim2.new(0, 200, 0, 120)
MainFrame.Active = true
MainFrame.Draggable = true

local UICorner = Instance.new("UICorner")
UICorner.CornerRadius = UDim.new(0, 12)
UICorner.Parent = MainFrame

local UIStroke = Instance.new("UIStroke")
UIStroke.Color = Color3.fromRGB(100, 100, 255)
UIStroke.Thickness = 2
UIStroke.Parent = MainFrame

local TitleLabel = Instance.new("TextLabel")
TitleLabel.Parent = MainFrame
TitleLabel.BackgroundTransparency = 1
TitleLabel.Size = UDim2.new(1, 0, 0, 30)
TitleLabel.Font = Enum.Font.GothamBold
TitleLabel.Text = "🌈 Rainbow Dash"
TitleLabel.TextColor3 = Color3.fromRGB(255, 255, 255)
TitleLabel.TextScaled = true
TitleLabel.Position = UDim2.new(0, 0, 0, 5)

local DashButton = Instance.new("TextButton")
DashButton.Parent = MainFrame
DashButton.BackgroundColor3 = Color3.fromRGB(100, 150, 255)
DashButton.BorderSizePixel = 0
DashButton.Position = UDim2.new(0.1, 0, 0.35, 0)
DashButton.Size = UDim2.new(0.8, 0, 0, 45)
DashButton.Font = Enum.Font.GothamBold
DashButton.Text = "START DASH (E)"
DashButton.TextColor3 = Color3.fromRGB(255, 255, 255)
DashButton.TextScaled = true

local ButtonCorner = Instance.new("UICorner")
ButtonCorner.CornerRadius = UDim.new(0, 10)
ButtonCorner.Parent = DashButton

local DistanceLabel = Instance.new("TextLabel")
DistanceLabel.Parent = MainFrame
DistanceLabel.BackgroundTransparency = 1
DistanceLabel.Position = UDim2.new(0, 0, 0.75, 0)
DistanceLabel.Size = UDim2.new(1, 0, 0.25, 0)
DistanceLabel.Font = Enum.Font.GothamBold
DistanceLabel.Text = "Distance: 0/10 studs"
DistanceLabel.TextColor3 = Color3.fromRGB(0, 255, 0)
DistanceLabel.TextScaled = true

-- ────────────────────────────────────────────────
--                  DASH FUNCTIONS
-- ────────────────────────────────────────────────

local function createRainbowTrail(part)
    local trail = Instance.new("Trail")
    trail.Color = ColorSequence.new(rainbowColors)
    trail.Lifetime = TRAIL_DURATION
    trail.MinLength = 0.08
    trail.WidthScale = NumberSequence.new({NumberSequenceKeypoint.new(0, 1.3), NumberSequenceKeypoint.new(1, 0)})
    trail.Transparency = NumberSequence.new({NumberSequenceKeypoint.new(0, 0.15), NumberSequenceKeypoint.new(1, 1)})
    trail.LightEmission = 0.35
    trail.LightInfluence = 0
    trail.FaceCamera = true
    trail.Enabled = true

    local a0 = Instance.new("Attachment", part)
    a0.Position = Vector3.new(0, -1.4, 0)
    local a1 = Instance.new("Attachment", part)
    a1.Position = Vector3.new(0, -2.6, 0)

    trail.Attachment0 = a0
    trail.Attachment1 = a1
    trail.Parent = part

    task.delay(TRAIL_DURATION + 0.6, function()
        if trail then trail:Destroy() end
        if a0 then a0:Destroy() end
        if a1 then a1:Destroy() end
    end)
end

local function stopDash()
    isDashing = false
    totalTraveled = 0
    
    if linVel then 
        linVel:Destroy() 
        linVel = nil 
    end
    
    if dashConnection then
        dashConnection:Disconnect()
        dashConnection = nil
    end
    
    -- Reset GUI
    DashButton.Text = "START DASH (E)"
    DashButton.BackgroundColor3 = Color3.fromRGB(100, 150, 255)
    DistanceLabel.Text = "Distance: 0/10 studs"
    DistanceLabel.TextColor3 = Color3.fromRGB(0, 255, 0)
end

local function toggleDash()
    local char = player.Character
    if not char then return end
    
    local hrp = char:FindFirstChild("HumanoidRootPart") or char:FindFirstChildWhichIsA("BasePart", true)
    if not hrp then return end
    
    local humanoid = char:FindFirstChildOfClass("Humanoid")
    if not humanoid or humanoid.Health <= 0 then return end
    
    if isDashing then
        -- STOP DASH
        stopDash()
        print("🌈 Dash stopped!")
    else
        -- START DASH
        isDashing = true
        totalTraveled = 0
        startPos = hrp.Position
        
        local lookVector = workspace.CurrentCamera.CFrame.LookVector * Vector3.new(1, 0, 1)
        if lookVector.Magnitude < 0.01 then 
            lookVector = hrp.CFrame.LookVector * Vector3.new(1, 0, 1) 
        end
        lookVector = lookVector.Unit
        
        -- Apply velocity
        linVel = Instance.new("LinearVelocity")
        linVel.Attachment0 = hrp:FindFirstChild("RootAttachment") or Instance.new("Attachment", hrp)
        linVel.VectorVelocity = lookVector * DASH_SPEED
        linVel.MaxForce = math.huge
        linVel.Parent = hrp
        
        -- Create trails
        local parts = {hrp}
        if char:FindFirstChild("LowerTorso") then table.insert(parts, char.LowerTorso) end
        if char:FindFirstChild("UpperTorso") then table.insert(parts, char.UpperTorso) end
        
        for _, p in ipairs(parts) do
            createRainbowTrail(p)
        end
        
        -- Update GUI
        DashButton.Text = "STOP DASH (E)"
        DashButton.BackgroundColor3 = Color3.fromRGB(255, 100, 100)
        DistanceLabel.TextColor3 = Color3.fromRGB(255, 255, 0)
        
        -- Distance tracking
        dashConnection = RunService.Heartbeat:Connect(function()
            if not isDashing or not hrp.Parent then 
                stopDash()
                return 
            end
            
            local currentPos = hrp.Position
            totalTraveled = (currentPos - startPos).Magnitude
            
            DistanceLabel.Text = string.format("Distance: %.1f/10 studs", totalTraveled)
            
            -- Auto-stop at 10 studs
            if totalTraveled >= DASH_MAX_DISTANCE then
                stopDash()
                print("🌈 Max distance reached!")
            end
        end)
        
        print("🌈 Dash started!")
    end
end

-- ────────────────────────────────────────────────
--                  EVENT BINDINGS
-- ────────────────────────────────────────────────

DashButton.MouseButton1Click:Connect(toggleDash)

UserInputService.InputBegan:Connect(function(input, gp)
    if gp then return end
    if input.KeyCode == Enum.KeyCode.E then
        toggleDash()
    end
end)

-- Clean up on death/respawn
Players.PlayerRemoving:Connect(function(plr)
    if plr == player then stopDash() end
end)

player.CharacterRemoving:Connect(stopDash)

print("🌈 Rainbow Dash TOGGLE loaded! Press E or click to START/STOP")
print("Auto-stops at 10 studs distance")