How to Use the Pusher to Move Mobs and Items
Placing the Pusher
Craft a Pusher with its crafting_shaped recipe and place it as a block facing the direction you want entities pushed. The Pusher shoves mobs and items away from itself along its facing. Set it at the end of a corridor, beside a drop, or at the mouth of a One Way passage so everything it touches keeps moving forward.
Building a Push Line
Place several Pushers in a row, all facing the same direction, to create a conveyor of forced movement. Combine them with One Way blocks so entities pushed forward cannot drift back. Add an Attractor at the start of the line to gather entities into the Pushers' range, then let the Pushers carry them to the destination. This pull-then-push layout keeps a steady stream moving without you standing there.
Directing the Flow
Use One Way Wall blocks along the sides of a push line to keep entities from escaping sideways. If you want items collected at the end, aim the final Pusher at a single drop point. For mobs, aim the line into a holding area or over an edge. Always check each Pusher's facing before powering the build, since a single reversed Pusher will fight the rest of the line. Run one test entity through the full route, then scale up.