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Game timer frequency?

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I'm talking about game logic timer. That is used for time-based movement quantities like velocity and animation. You need to have some kind of a logic timer if you want accurate velocities for moving objects. Some sample code what I'm talking about.

double logicTimerFrequency=37; // 37 milliseconds
double objVelocity=20; // 20 units/sec
double preTickVelocity=objVelocity/1000*logicTimerFrequency;

// loop

Or, do modern games use totally different approach that I haven't thought of ?

[edited by - MOVSW on March 25, 2003 12:12:12 AM]

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I think what most games do is loop through as quickly as possible, each loop making adjustments proportional to the amount of time elapsed since the last loop.

object.x += objVelocity * secondsElapsed;

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