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

local LASER_COLOR = Color3.new(1, 0, 0) -- Red color for the laser
local LASER_LENGTH = 10 -- Length of the laser in studs

local function onInputBegan(input, gameProcessedEvent)
    if input.KeyCode == Enum.KeyCode.E then
        local player = Players.LocalPlayer
        local character = player.Character
        local humanoid = character and character:FindFirstChildOfClass("Humanoid")
        if humanoid and humanoid.Health > 0 then
            local origin = character.Head.Position
            local direction = character.Head.CFrame.LookVector
            local ray = Ray.new(origin, direction * LASER_LENGTH)
            local part = Instance.new("Part")
            part.Anchored = true
            part.CanCollide = false
            part.Size = Vector3.new(0.2, 0.2, ray.Direction.Magnitude)
            part.CFrame = CFrame.new(origin, origin + direction * LASER_LENGTH / 2)
            part.Color = LASER_COLOR
            part.Parent = workspace
            local trail = Instance.new("Trail")
            trail.Attachment0 = part
            trail.Lifetime = 1
            trail.TextureMode = Enum.TextureMode.Decal
            trail.Transparency = NumberSequence.new({NumberSequenceKeypoint.new(0, 0), NumberSequenceKeypoint.new(1, 1)})
            trail.Color = ColorSequence.new(LASER_COLOR)
            trail.Parent = part
        end
    end
end

UserInputService.InputBegan:Connect(onInputBegan)