FourUI.h

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#pragma once
#include "BoardGame_Classes.h"
#include "FourBoard.h"
#include <iostream>
#include <random>
#include <chrono>
class FourUI : public UI<char> {
public:
    FourUI() : UI("Four-in-a-row (6x7)", 2) {}
    void print_board(const vector<vector<char>>& b) {
        cout << "\nColumns: ";
        for (int c = 0; c < (int)b[0].size(); ++c) cout << c << ' ';
        cout << "\n---------------------\n";
        for (int r = 0; r < (int)b.size(); ++r) {
            for (int c = 0; c < (int)b[r].size(); ++c) {
                char ch = b[r][c];
                cout << (ch == ' ' ? '.' : ch) << ' ';
            }
            cout << '\n';
        }
        cout << endl;
    }
    Move<char>* get_move(Player<char>* p) override {
        FourBoard* bptr = dynamic_cast<FourBoard*>(p->get_board_ptr());
        if (!bptr) {
            int r, c; char s;
            cin >> r >> c >> s;
            return new Move<char>(r, c, s);
        }
 
        auto matrix = bptr->get_board_matrix();
        print_board(matrix);
 
        if (p->get_type() == PlayerType::COMPUTER) {
 
            vector<int> validCols;
            for (int c = 0; c < bptr->get_columns(); ++c) {
                if (matrix[0][c] == ' ') validCols.push_back(c);
            }
            if (validCols.empty()) return new Move<char>(0, 0, p->get_symbol());
            static std::mt19937 rng((unsigned)chrono::high_resolution_clock::now().time_since_epoch().count());
            std::uniform_int_distribution<int> dist(0, (int)validCols.size() - 1);
            int col = validCols[dist(rng)];
            cout << "Computer " << p->get_name() << " plays column " << col << '\n';
            return new Move<char>(0, col, p->get_symbol()); 
        }
 
        while (true) {
            int col;
            cout << p->get_name() << " enter column (0-" << (bptr->get_columns() - 1) << "): ";
            if (!(cin >> col)) { cin.clear(); string garbage; getline(cin, garbage); cout << "Invalid input\n"; continue; }
            if (col < 0 || col >= bptr->get_columns()) { cout << "Column out of range\n"; continue; }
            if (matrix[0][col] != ' ') { cout << "Column full. Choose another.\n"; continue; }
            return new Move<char>(0, col, p->get_symbol());
        }
    }
 
    Player<char>* create_player(string& name, char symbol, PlayerType type) override {
        return new Player<char>(name, symbol, type);
    }
};