preston/bittorious

#include "torrent.h"

#include <math.h>


Torrent::Torrent (int num_pieces, float percent) {
    pieces = num_pieces;
    percent_per_client = percent;
}

bool * Torrent::pieces_for_client_affinity(int affinity) {
    bool * affinities = new bool[pieces];
    int start = affinity % pieces;
    int stop = ceil(start + (percent_per_client * pieces));
    for(int i = 0; i < this->pieces; ++i)
    {
        affinities[i] = 
            (i >= start && i <= stop)
            ||
            (pieces <= stop && i <= stop - pieces);
    }
    return affinities;
}