Function physicsframe

source/src/physics.cpp:779–791

int physsteps = 0, physframetime = PHYSFRAMETIME, lastphysframe = 0;

void physicsframe()          // optimally schedule physics frames inside the graphics frames
{
    int diff = lastmillis - lastphysframe;
    if(diff <= 0) physsteps = 0;
    else
    {
        extern int gamespeed;
        physframetime = clamp((PHYSFRAMETIME*gamespeed)/100, 1, PHYSFRAMETIME);
        physsteps = (diff + physframetime - 1)/physframetime;
        lastphysframe += physsteps * physframetime;
        if(!multiplayer(NULL) && physsteps > 1000) physsteps = 1000;
    }
}

VAR(physinterp, 0, 1, 1);