Physics based character movment

Original Post

Nov 25, 2009 at 4:47 PM

Does anyone have a sample algorithm or tutorial for how much force to apply to a physics body in one axis to make it move given a desired velocity along said axis and a maximum force to apply to achieve said velocity. Its for a 2d platformer and I set all the friction to zero so the characters will behave the same in mid air or on the ground.

bzroom

Nov 25, 2009 at 5:15 PM

float desiredVelocity, currentVelocity;
const float timeStep = 0.1f;

float deltaV = desiredVelocity - currentVelocity;
float impulse = deltaV * mass;
float force = impulse / timeStep;

Kaze

Nov 25, 2009 at 5:57 PM

Thanks, that worked ok

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