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Sales - Game budget's! - View Post

albionus on 05 May 2007
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KruzeS said:

 

albionus said:

(...)

Ok, thanks. LiveMove does look cool! The performance/footprint is really impressive. Even for $2500.

On the other hand, I wasn't completely wrong, as movements seem mostly modeled through learning and recognition. There's very little "advanced" calculus going on. You should get rough motion speed from how long it took you to accomplish the move and little more. Orientation "on hold" is pretty easy too, and location isn't really used beyond pointing, which is accomplished with the camera.

 

I think the calculus is more for the Wii to understand what the motion is not for the programmers.  They don't need calculus but I imagine that while brute force record as many points as possible (ƒ(v)=∑in=0 an and then ƒ(x)=∑in=0 vn) would work its a lot easier to just tell the wii that if ƒ(v)=∫ a dv, then ƒ(x)= ∫ v dx would be used by the Wii to determine if a particular shape was made by the Wiimote.  A simple example is waggle right, if they want you to move the Wiimote right 1 inch for it to measure then the Wii would check if amount of acceleration over whatever length of time solves some form of the equation 1/6*a3|0t > 1.  Now switch to 3 variables, possibly polar coordinates, and complex shapes like a figure eight and it's starting to sound like those programmers were having a blast .  Now I'm mad, they were paid to solve what I had to pay OSU to let me solve.

 I'm not sure if LiveMove uses calculus or if it simply records a ton of points but either way it's a lot quicker than what the devs had to do before.  We could debate to no end how advanced the calculus is since that would be different for everyone.  Unfortuantely I've had several years of math past calculus so multivariable isn't terribly advanced to me but to someone with a BA even pre-calculus is advanced.  For software programmers I'm not sure.  At any rate, sorry if you know this, I wouldn't want anyone to think I'm just making up the equations bit.   Also sorry my last post sounds snarky, I thought it sounded sarcastically humorous but it doesn't when re-reading it.