Medusa effect
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Revision as of 13:45, 16 May 2006 by Ryan W (talk | contribs) (two-sided sidedef -> two-sided linedef)
The Medusa effect occurs when there is more than one wall patch in any "middle" wall texture of a two-sided linedef that is visible in the display window. Due to a game engine limitation, animation in vanilla Doom will slow to a crawl and make play impossible until the offending wall is out of view.
The effect is named for a creature in Greek mythology (who had live snakes for hair). A glance at the Medusa turned the beholder to stone.
Sources
This article is based on information in the Unofficial Doom Specs.
