level editor — paint a room, copy the code, hand it over.
left-click / drag to paint · only one @ allowed. Right-click = wiring: right-click an activator (button, wire post, puzzle piece) to arm it, then right-click each target (gate / spike / drop / eye / piston) to link it — a blue arrow shows the link. Right-click the armed activator again (or empty floor) to stop. A linked activator fires only its links; an un-linked one still fires everything. Right-click a drop (nothing armed) to change its payload. Wire posts: in-game, space by one to drag a wire, space by another to join — while joined they power their links.