The currently in-use equations for animating fluid dynamics were not developed with computers in mind, and were simply reworkings of older equations. they claim that new equations use about the same amount of computer resources, but with much better results.
"There was also a game called Lugaru, which was the farthest thing from "real" fluid dynamics -- yet, slash someone with a knife, and the wound would bleed a bit (leaving a trail of blood down the character's chest). Kill them with a knife, and your knife would likely drip blood, and the corpse would lie in a growing pool of its own blood. Technically less impressive -- this game can play on pretty much anything that can play Counter-Strike (the original, I'd guess) -- but all it really takes is an attention to detail."
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