question about manually updating physics

hello,

if i want to update physics manually i have to call physics.Simulate(time.Fixeddeltatime);

but this needs to be called in update. which is called 60 times a second..

if my update tick was 0.01 so i would want 100 ticks a second for physics, then in this case it would tick 60 times giving me 0.60 of a second..

how is this gap reconciled between the autoSimulate and Manual?

 

Thank you

 

@MelvMay

so i wrote some physics for my game, i am pretty much only using the code i wrote for velocity resolution and velocity after contact with another object. i am using unity's collision detection though.
this is fine till now, but i have a script which simulates 100 time.FixeddeltaTime into the future, by calling the function.

simulate() in update

void simulate()
{
for(int i = 0, i < 100; i++)
{
//here i might add some code because i dont think that the code i wrote for velocity resolution is called by This function so i add it here to be sure that it is called..

Physics.Simulate(time.FixeddeltaTime);
}
}

but it does not work, ie. when i take the shot the simulated path is longer than the actual shot path.. i debugged oncollisionEnter and it is being called during the simulation.. so it IS being called..

but it does not seem to be having an effect on the simulation..

is there something im doing wrong here or missing or is it working and im just not using it right?