Physics based character movment

Math and Physics Programming

Started by Kaze November 25, 2009 04:47 PM

1 comment, last by Kaze 14 years, 5 months ago

948

Author

November 25, 2009 04:47 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

648

November 25, 2009 05:15 PM

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

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