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Seems like this was hugged to death by HN.

The article links to another one as well called "The Incredible Power of Dijkstra Maps": https://web.archive.org/web/20221116170436/http://www.rogueb...

> Most of the things a monster will do involve moving toward something or moving away from it.

One can drive mobs of cattle (and other domesticated species) by taking advantage of exactly this behaviour.