Sumotori Dreams is actually trying to do that - to animate not a human, of course, but a blocky biped with actual weight, and have it self-balance and move in a believable (if humorously crude) way. To put it another way, game characters may look very fluid, if well animated but you can't take the code that moves them and use it to move a real-world robot. A behavior would actually be governed by physics if we were simulating the play of muscles, the weight of the limbs, and so on - a rather difficult programming challenge. Behaviors are either 'animated' (with some artist laboring over a hot work station deciding what 'bone motions' are necessary to create that fluid sword-draw you see on screen), or created by motion capture (with some actor wearing a black suit with lots of ping-pong ball halves pasted all over it drawing a sword, and the mo-cap system recording the motions, which then get replayed in the game). Why is the physics impressive, given how stumblebum these characters are? Keep in mind that even in games 'with physics,' the behaviors of characters are not actually governed by physics.

If they're too close to each other, the bow can, in fact, cause them to bash into each other and fall down again.įrom a game perspective, this is the gaming equivalent of a Three Stooges routine - short, crude physical comedy.

After the fall, the characters autonomously (no further input allowed) try to stand up and bow. A match typically lasts about ten seconds before one, or both, stumble and fall (with nice, clunky sound effects). You don't 'control' them, exactly they are autonomous, AI-controlled characters who try to balance themselves (poorly) the only things you do are use up-arrow to walk forward, backspace to initiate a push at your opponent, and enter to initiate a harder shove. In Sumotori Dreams, two 'sumo wrestlers' who are actually congregations of cubes rectangular prisms, looking something like the old Rock'em Sock'em Robots toy, begin in a circular arena and try to push each other over. Sumotori Dreams is a) a goofy but minor little game that's fun to watch but not precisely fun to play, b) an impressive physics implementation in very tight form, c) an illustration of why the demoscene is still relevant: Take your pick.

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