Vanilla conveyor

A vanilla conveyor is a level design trick that allows a level designer to create a functional voodoo script in vanilla Doom.

A vanilla conveyor functions by placing a voodoo doll on the edge of a ledge overhanging a mikoportal, with a barrel placed such that when a strategically placed crusher is activated, the barrel explodes and slightly damages the voodoo doll, sending it into the mikoportal with a horizontal momentum that persists until the voodoo doll reaches the far end of the mikoportal. By strategically placing linedefs with special line actions in the path of the voodoo doll, a level designer can create ersatz "scripted events".