Simulating a PhysX program requires calculating the new position of all of the PhysX actors that are under the effect of Newton's law, for the next time frame. Simulating a PhysX program requires a time value, also known as time step, which forwards the time in the PhysX world. We use the PxScene::simulate()
method to advance the time in the PhysX world. Its simplest form requires one parameter of type PxReal, which represents the time in seconds, and this should always be more than 0, of else the resulting behavior will be undefined. After this, you need to call PxScene::fetchResults(), which will allow the simulation to finish and return the result. The method requires an optional Boolean parameter, and setting this to true indicates that the simulation should wait until it is completed, so that on return the results are guaranteed to be available.
//Stepping PhysX
PxReal myTimestep = 1.0f/60.0f;
void StepPhysX()
{
gScene->simulate(myTimestep);
gScene->fetchResults...