Interpolate

bool C_BaseEntity::Interpolate( float currentTime )
{
    VPROF( "C_BaseEntity::Interpolate" );

    Vector oldOrigin;
    QAngle oldAngles;

    int bNoMoreChanges;
    int retVal = BaseInterpolatePart1( currentTime, oldOrigin, oldAngles, bNoMoreChanges );

    // If all the Interpolate() calls returned that their values aren't going to
    // change anymore, then get us out of the interpolation list.
    if ( bNoMoreChanges )
        RemoveFromInterpolationList();

    if ( retVal == INTERPOLATE_STOP )
        return true;

    int nChangeFlags = 0;
    BaseInterpolatePart2( oldOrigin, oldAngles, nChangeFlags );

    return true;
}