cmpsc330hw2/main.cpp

#include <algorithm>
#include <iostream>
#include <map>
#include <sstream>
#include <vector>

#define pt cout <<
#define nl '\n'
#define in cin >>

using namespace std;

// -------- START RAII HELPERS--------

unsigned long allocatedMem = 0;

void *alloc(size_t size) {
    void *ptr = malloc(size);
    if (ptr == nullptr) {
        cerr << "Memory allocation failed" << nl;
        return nullptr;
    }
    allocatedMem += 1;
    return ptr;
}

void dealloc(void *ptr) {
    if (ptr) free(ptr);
    allocatedMem -= 1;
}

bool assert_alloc() {
    return !allocatedMem;
}

// -------- END RAII HELPERS--------

struct Move {
    char player;
    int moveX;
    int moveY;
};

struct Moves {
    int x;
    int y;
    vector<Move> moves;
};

bool isValidPlayer(char c) {
    return c >= 'A' && c <= 'Z' && c != 'X';
}

Moves serialize(const string &s) {
    Moves result;
    istringstream iss(s);
    iss >> result.x >> result.y;
    result.x <<= 1;
    result.y <<= 1;

    string player;
    int x, y;
    while (iss >> player >> x >> y) {
        if (player == "END") break;
        if (!isValidPlayer(player[0])) {
            string err = "Invalid player: " + player;
            throw std::invalid_argument(err);
        }
        result.moves.push_back({player[0], x, y});
    }

    return result;
}

void initBoard(char **board, int x, int y) {
    for (int i = 0; i < x; ++i) {
        for (int j = 0; j < y; j++) {
            board[i][j] = (j & 1 || i & 1) ? ' ' : '.';
        }
    }
}

char **allocAndInitBoard(int x, int y) {
    char **board = static_cast<char **>(alloc(sizeof(char *) * x));
    for (int i = 0; i < x; ++i) {
        board[i] = static_cast<char *>(alloc(sizeof(char) * y));
    }
    initBoard(board, x, y);
    return board;
}

void deallocBoard(char **board, int x) {
    for (int i = 0; i < x; ++i) {
        dealloc(board[i]);
    }
    dealloc(board);
}

void printBoard(char **board, int x, int y) {
    for (int i = 0; i < x; ++i) {
        for (int j = 0; j < y; ++j) {
            pt board[i][j];
        }
        pt nl;
    }
}

char toLowerCase(char c) {
    return c | 32;
}

int normalizePlayer(char c) {
    return toLowerCase(c) - 'a';
}

void printScores(map<char, int> &points) {
    // TODO: change this to custom sort before submission
    vector<pair<char, int> > ranking(points.begin(), points.end());
    sort(ranking.begin(), ranking.end(), [](const pair<char, int> &a, const pair<char, int> &b) {
        return a.second < b.second;
    });

    // Print the ranks
    for (const auto &rank: ranking) {
        pt rank.first << ": " << rank.second << " boxes" << nl;
    }
}

bool isValidMove(int x, int y) {
    // TODO: simplify this
    return !(x & 1 != y & 1 && !(x & 1));
}

void solve(Moves moves, char **board) {
    map<char, int> points;

    for (Move &move: moves.moves) {
        int moveX = move.moveX;
        int moveY = move.moveY;
        char player = move.player;

        if (!isValidMove(moveX, moveY)) {
            pt "Invalid move by: " << player << " at (x, y): (" << moveX << ", " << moveY << ")" << nl;
            board[moveX][moveY] = 'X';
            printBoard(board, moves.x, moves.y);

            printScores(points);
            pt "Exiting.." << nl;
            return;
        }

        board[moveX][moveY] = toLowerCase(player);

        // TODO:
        if (moveX % 2 == 0 && moveY % 2 == 1) {

        } else if (moveX % 2 == 1 && moveY % 2 == 0) {

        }
    }

    printScores(points);
    printBoard(board, moves.x, moves.y);
}

/*
void solve(Moves moves, char **board) {
    /*
     TODO: use custom arr for points over map
     *int *points = static_cast<int *>(alloc(26));
    for (int i = 0; i < 26; i++) {
        points[i] = 0;
    }#1#
    map<char, int> points;

    for (const auto &move: moves.moves) {
        int moveX = move.moveX;
        int moveY = move.moveY;
        char player = move.player;

        board[moveX][moveY] = toLowerCase(player);

        if (moveX % 2 == 0 && moveY % 2 == 1) {
            if (moveX > 0 && board[moveX - 1][moveY] == '|' && board[moveX - 1][moveY - 1] == '-' && board[moveX - 1][moveY + 1] == '-') {
                points[player]++;
            }
            if (moveX < moves.x - 1 && board[moveX + 1][moveY] == '|' && board[moveX + 1][moveY - 1] == '-' && board[moveX + 1][moveY + 1] == '-') {
                points[player]++;
            }
        } else if (moveX % 2 == 1 && moveY % 2 == 0) {
            if (moveY > 0 && board[moveX][moveY - 1] == '-' && board[moveX - 1][moveY - 1] == '|' && board[moveX + 1][moveY - 1] == '|') {
                points[player]++;
            }
            if (moveY < moves.y - 1 && board[moveX][moveY + 1] == '-' && board[moveX - 1][moveY + 1] == '|' && board[moveX + 1][moveY + 1] == '|') {
                points[player]++;
            }
        }
    }

    vector<pair<char, int> > ranking(points.begin(), points.end());
    sort(ranking.begin(), ranking.end(), [](const pair<char, int> &a, const pair<char, int> &b) {
        return a.second < b.second;
    });

    for (const auto &rank: ranking) {
        pt rank.first << ": " << rank.second << " boxes" << nl;
    }
    printBoard(board, moves.x, moves.y);


    // dealloc(points);
}
*/

int init(char *fileName) {
    // --- IO START ---
    FILE *inp = fopen(fileName, "r");
    if (inp == nullptr) {
        cerr << "File not found" << nl;
        return 1;
    }

    fseek(inp, 0L, SEEK_END);
    const long sz = ftell(inp);
    fseek(inp, 0L, SEEK_SET);

    char *fileInpPtr = static_cast<char *>(alloc(sz + 1 * sizeof(char)));
    fileInpPtr[sz] = '\0';

    for (int i = 0; i < sz; ++i) {
        fscanf(inp, "%c", &fileInpPtr[i]);
    }
    // --- IO END ---

    // --- ALGORITHM START ---
    Moves moves = serialize(fileInpPtr);
    char **board = allocAndInitBoard(moves.x, moves.y);
    solve(moves, board);
    // --- ALGORITHM END ---

    // --- CLEANUP START ---
    dealloc(fileInpPtr);
    deallocBoard(board, moves.x);
    fclose(inp);

    if (!assert_alloc()) {
        cerr << "Memory leak detected" << nl;
        return 1;
    }
    // --- CLEANUP END ---
    return 0;
}

int main(int argc, char **argv) {
    if (argc < 2) {
        cerr << "No input file provided" << nl;
        return 1;
    }

    try {
        return init(argv[1]);
    } catch (const std::invalid_argument &e) {
        cerr << e.what() << nl;
        return 1;
    }
}