Using the foxwq score estimator in a standalone Windows program

foxwq_se.cpp

#include <windows.h>
#include <iostream>
#include <vector>
#include <tuple>
#include <algorithm>

using namespace std;

enum Color : int {
    kBlack = 1,
    kWhite = 2,
};

// The interface for the functions we need
struct GoStar5M {
    bool (*FirstInitial)(const char*) = nullptr;
    bool (*NewEvent)(int) = nullptr;
    bool (*SetMove)(int, Color, int *, int *) = nullptr;
    bool (*CalcTerritory)(int*) = nullptr;
};

GoStar5M LoadGoStar5M() {
    HINSTANCE proc_id = LoadLibraryA("C:\\Program Files (x86)\\foxwq\\foxwq\\GoStar5M.dll");

    if (!proc_id) {
        cerr << "failed to load gostar dll: " << GetLastError() << endl;
        exit(1);
    }

    return {
        (bool (*)(const char *))GetProcAddress(proc_id, "FirstInitial"),
        (bool (*)(int))GetProcAddress(proc_id, "NewEvent"),
        (bool (*)(int, Color, int *, int *))GetProcAddress(proc_id, "SetMove"),
        (bool (*)(int *))GetProcAddress(proc_id, "CalcTerritory"),
    };
}

int main() {
    cout << "loading gostar5m..." << endl;
    GoStar5M gostar5m = LoadGoStar5M();

    cout << "initializing gostar5m..." << endl;
    if (!gostar5m.FirstInitial("YeHuWeiQi")) {
        cerr << "failed to init gostar5m" << endl;
        return 1;
    }
    
    // This sets the board size
    cout << "new event: 19" << endl;
    if (!gostar5m.NewEvent(19)) {
        cerr << "failed to set new event" << endl;
        return 1;
    }

    {
        vector<tuple<int, int, Color>> moves = {
            {4,4,kBlack},
            {4,16,kBlack},
            {16,4,kWhite},
            {16,16,kWhite},
        };

        // no idea what these are for yet...
        vector<int> arg3(4 * 361, 0);
        vector<int> arg4(4 * 361, 0);

        for (const auto& [r, c, color] : moves) {
            int encoded_move = (r << 8) ^ c;

            cout << "setting move (" << r << ", " << c << ")" << endl;
            if (!gostar5m.SetMove(encoded_move, color, arg3.data(), arg4.data())) {
                cerr << "failed to set move (" << r << ", " << c << ")";
                return 1;
            }
        }
    }

    {
        int territory[19][19];

        cout << "calculating territory..." << endl;
        if (!gostar5m.CalcTerritory(&territory[0][0])) {
            cerr << "failed to calculate territory" << endl;
            return 1;
        }

        for (int i = 0; i < 19; ++i) {
            for (int j = 0; j < 19; ++j) {
                cout << territory[i][j] << ' ';
            }
            cout << endl;
        }
    }
    
    return 0;
}