/*
 * sim.cpp
 *
 *  Created on: Sep 25, 2010
 *      Author: Michael J. Fischer
 *      for use in Yale course CPSC 427a, Fall 2010
 */

#include "sim.hpp"

Simulator::Simulator(Params& p) :
    numRounds(p.getNumRounds()) {

    if (p.getFlagFileName())
        // dice rolls come from file
        dice = new FileDice(2, 6, p.getFileName());
    else
        // dice rolls are random
        dice = new RandDice(2, 6, p.getSeed());

    crapsGame = new Craps(dice);
}

void Simulator::experiment() {
    crapsGame->resetCounters();
    for (int i = 0; i < numRounds; i++) {
        crapsGame->playRound();
    }
}

ostream& Simulator::printResults(ostream& out) const {
    out << "After " << numRounds << " rounds using ";
    dice->printSummary(out) << ":\n" << "Wins: " << crapsGame->getNumWins()
            << "\nProbability of win: " << (double) crapsGame->getNumWins()
            / numRounds << "\nExpected number of rolls: "
            << (double) crapsGame->getNumRolls() / numRounds << endl;
    return out;
}

ostream& Simulator::print(ostream& out) const {
    out << "[Simulator:\n";
    out << "  numRounds=" << numRounds << "\n";
    out << "  " << *dice << "\n";
    out << "  " << *crapsGame << "\n";
    out << "End Simulator]" << endl;
    return out;
}