Input

Synthesise keyboard and mouse input — press, release, click, scroll, and cursor motion — without needing the real input device.

Overview

Synthetic input, delivered at the OS level rather than through Roblox's input system. That is the important distinction: these produce events indistinguishable from a real device, but they go to whichever window has focus.

Walking forward and clicking

-- Only send input when Roblox actually has focus.
if isrbxactive() then
    keypress(0x57)          -- W down
    task.wait(0.5)
    keyrelease(0x57)        -- W up

    mousemoverel(100, 0)    -- nudge the camera
    mouse1click()
end

Check focus first

Input goes to the focused window. Without an isrbxactive() guard, a loop that presses W types into whatever you alt-tabbed to.

Keyboard

Mouse buttons

Mouse motion & scroll

Focus

Three related but different questions: is the window active at all, is it the Roblox window, and is the game itself accepting input.