commit 643ee76c1a12a678b9f2549383470225575d9ddc
Author: Martin Kloeckner <mjkloeckner@gmail.com>
Date: Mon, 1 Apr 2024 00:10:05 -0300
First commit
Diffstat:
| A | tictactoe.cpp | | | 345 | +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
1 file changed, 345 insertions(+), 0 deletions(-)
diff --git a/tictactoe.cpp b/tictactoe.cpp
@@ -0,0 +1,345 @@
+#include <iostream>
+#include <csignal>
+#include <termios.h>
+#include <string>
+#include <sstream>
+
+typedef enum {
+ PLAYER_1,
+ PLAYER_2,
+} player_t;
+
+typedef enum {
+ PLAYING,
+ WIN,
+ DRAFT,
+ RESET,
+ HALT,
+ EXIT
+} game_status_t;
+
+static struct termios default_attributes;
+static unsigned int tui_total_height;
+static player_t current_player;
+static game_status_t game_status;
+static int cursor_col, cursor_row, cursor_row_pre;
+std::string player_status, key_string;
+char game_board[3][3];
+
+void tui_set_input_mode (void) {
+ struct termios tattr;
+
+ if (!isatty(STDIN_FILENO)) {
+ std::cerr << "Not a terminal" << std::endl;
+ exit (EXIT_FAILURE);
+ }
+
+ tcgetattr(STDIN_FILENO, &default_attributes);
+ tcgetattr(STDIN_FILENO, &tattr);
+ tattr.c_lflag &= ~(ICANON|ECHO);
+ tattr.c_cc[VMIN] = 1;
+ tattr.c_cc[VTIME] = 0;
+ tcsetattr(STDIN_FILENO, TCSAFLUSH, &tattr);
+}
+
+void tui_reset_input_mode (void) {
+ tcsetattr(STDIN_FILENO, TCSANOW, &default_attributes);
+}
+
+void game_sig_handler(int signo) {
+ signal(signo, SIG_IGN);
+ if ((signo == SIGINT) || (signo == SIGQUIT)) {
+ game_status = EXIT;
+ exit(0);
+ }
+}
+
+void game_clear_board(void) {
+ std::cout << "\033[" << (cursor_row_pre*2)+1 << "F\033[0K";
+ cursor_row_pre = cursor_row;
+}
+
+void game_player_status_msg() {
+ std::ostringstream current_player_string;
+ key_string.assign("\033[0J");
+
+ if(game_status == PLAYING) {
+ player_status = std::string("Player ");
+ current_player_string << current_player+1;
+ player_status += current_player_string.str();
+ player_status += "\033[0J";
+ }
+ else if (game_status == WIN) {
+ unsigned int player_won = ((current_player == PLAYER_1) ? PLAYER_2 : PLAYER_1);
+ player_status = std::string("Player ");
+ current_player_string << player_won+1;
+ player_status += current_player_string.str();
+ player_status += " Wins";
+ game_status = HALT;
+ }
+ else if (game_status == DRAFT) {
+ player_status.assign("Draft\033[0J");
+ key_string.assign("Press `r` to restart\033[0J");
+ game_status = HALT;
+ }
+}
+
+void game_print_board(void) {
+ game_player_status_msg();
+ std::cout << "┌───┬───┬───┐\n│ "
+ << game_board[0][0] << " │ "
+ << game_board[0][1] << " │ "
+ << game_board[0][2] << " │ " << player_status << "\n";
+
+ std::cout << "├───┼───┼───┤ " << key_string << "\n│ "
+ << game_board[1][0] << " │ "
+ << game_board[1][1] << " │ "
+ << game_board[1][2] << " │\n";
+
+ std::cout << "├───┼───┼───┤\n│ "
+ << game_board[2][0] << " │ "
+ << game_board[2][1] << " │ "
+ << game_board[2][2] << " │\n"
+ << "└───┴───┴───┘\n";
+}
+
+void game_board_set_cursor(void) {
+ if(cursor_row)
+ std::cout << "\033[" << cursor_row*2 << "B";
+
+ std::cout << "\033[0G\033[" << (cursor_col*4)+2 << "C";
+}
+
+void game_move_cursor_right(void) {
+ cursor_col = (cursor_col == 2) ? 0 : cursor_col + 1;
+}
+
+void game_move_cursor_left(void) {
+ cursor_col = (cursor_col > 0) ? cursor_col-1 : 2;
+}
+
+void game_move_cursor_up(void) {
+ cursor_row_pre = cursor_row;
+ cursor_row = (cursor_row > 0) ? cursor_row-1 : 2;
+}
+
+void game_move_cursor_down(void) {
+ cursor_row_pre = cursor_row;
+ cursor_row = ((cursor_row + 1) > 2) ? 0 : cursor_row+1;
+}
+
+void game_set_at_cursor_pos(void) {
+ if(game_board[cursor_row][cursor_col] == ' ') {
+ char aux = ((current_player == PLAYER_1) ? 'X' : 'O');
+ game_board[cursor_row][cursor_col] = aux;
+ current_player = ((current_player == PLAYER_1) ? PLAYER_2 : PLAYER_1);
+ }
+}
+
+void game_redraw_board(void) {
+ game_clear_board();
+ game_print_board();
+ std::cout << "\033[" << tui_total_height-1 << "A";
+ game_board_set_cursor();
+}
+
+void game_tui_cleanup() {
+ tui_reset_input_mode();
+ std::cout << "\033[" << tui_total_height-(cursor_row*2)-1 << "E";
+}
+
+void game_tui_setup() {
+ tui_set_input_mode();
+ signal(SIGINT, game_sig_handler);
+ signal(SIGQUIT, game_sig_handler);
+ signal(SIGTSTP, SIG_IGN);
+ atexit(game_tui_cleanup);
+ std::cout << "\033[4 q"; // Blinking block cursor
+}
+
+void game_initialize_board() {
+ for(size_t i = 0; i < 3; ++i) {
+ for(size_t j = 0; j < 3; ++j) {
+ game_board[i][j] = ' ';
+ }
+ }
+}
+
+void game_check_status() {
+ char aux;
+ size_t i, j, occ_x, occ_o, occurrences;
+ if(game_status != PLAYING)
+ return;
+
+ // Horizontal line
+ for(i = occ_x = occ_o = 0; i < 3; ++i) {
+ aux = game_board[cursor_row][i];
+ if(aux == 'X') {
+ occ_x++;
+ occ_o = 0;
+ }
+ else if (aux == 'O'){
+ occ_x = 0;
+ occ_o++;
+ }
+ else {
+ occ_x = occ_o = 0;
+ }
+ }
+ if ((occ_o == 3) || (occ_x == 3)) {
+ game_status = WIN;
+ }
+
+ // Vertical line
+ for(i = occ_x = occ_o = 0; i < 3; ++i) {
+ aux = game_board[i][cursor_col];
+ if(aux == 'X') {
+ occ_x++;
+ occ_o = 0;
+ }
+ else if (aux == 'O'){
+ occ_x = 0;
+ occ_o++;
+ }
+ else {
+ occ_x = occ_o = 0;
+ }
+ }
+ if ((occ_o == 3) || (occ_x == 3)) {
+ game_status = WIN;
+ }
+
+ // Reverse diagonal line (\)
+ for(i = occ_x = occ_o = 0; i < 3; ++i) {
+ aux = game_board[i][i];
+ if(aux == 'X') {
+ occ_x++;
+ occ_o = 0;
+ }
+ else if (aux == 'O'){
+ occ_x = 0;
+ occ_o++;
+ }
+ else {
+ occ_x = occ_o = 0;
+ }
+ }
+ if ((occ_o == 3) || (occ_x == 3)) {
+ game_status = WIN;
+ }
+
+ // Forward diagonal line (/)
+ for(i = occ_x = occ_o = 0; i < 3; ++i) {
+ aux = game_board[2-i][i];
+ if(aux == 'X') {
+ occ_x++;
+ occ_o = 0;
+ }
+ else if (aux == 'O'){
+ occ_x = 0;
+ occ_o++;
+ }
+ else {
+ occ_x = occ_o = 0;
+ }
+ }
+ if ((occ_o == 3) || (occ_x == 3)) {
+ game_status = WIN;
+ }
+
+ for(i = 0; i < 3; ++i)
+ for(j = 0; j < 3; ++j)
+ if(game_board[i][j] == ' ')
+ goto end;;
+
+end:
+ if((i == j) && (i == 3))
+ game_status = DRAFT;
+}
+
+void game_key_handler(void) {
+ char cmd;
+
+ std::cin.get(cmd);
+ switch(cmd) {
+ case 'w':
+ case 'k':
+ game_move_cursor_up();
+ break;
+ case 's':
+ case 'j':
+ game_move_cursor_down();
+ break;
+ case 10: // Enter
+ case ' ':
+ if(game_status == PLAYING)
+ game_set_at_cursor_pos();
+ break;
+ case 'l':
+ case 'd':
+ game_move_cursor_right();
+ break;
+ case 'h':
+ case 'a':
+ game_move_cursor_left();
+ break;
+ case 'r':
+ if(game_status == HALT)
+ game_status = RESET;
+ break;
+ case 'q':
+ game_status = EXIT;
+ break;
+ case 27: { // Escape codes (i.e. arrow keys)
+ std::cin.get(cmd); // skip '['
+ std::cin.get(cmd);
+ switch (cmd) {
+ case 'A': // up
+ game_move_cursor_up();
+ break;
+ case 'B': // down
+ game_move_cursor_down();
+ break;
+ case 'C': // right
+ game_move_cursor_right();
+ break;
+ case 'D': // left
+ game_move_cursor_left();
+ break;
+ }
+ break;
+ }
+ }
+}
+
+int main (void) {
+ tui_total_height = 7;
+ cursor_row = cursor_row_pre = cursor_col = 0;
+ game_status = PLAYING;
+ current_player = PLAYER_1;
+
+ game_tui_setup();
+ game_initialize_board();
+ game_print_board();
+ std::cout << "\033[" << tui_total_height-1 << "A";
+ std::cout << "\033[" << ((cursor_col*4)+2) << "C";
+
+ game_move_cursor_right();
+ game_redraw_board();
+ game_move_cursor_down();
+ game_redraw_board();
+
+ while(game_status != EXIT) {
+ game_key_handler();
+ if(game_status == RESET) {
+ game_status = PLAYING;
+ current_player = PLAYER_1;
+ cursor_col = cursor_row = 1;
+ game_initialize_board();
+ }
+ game_check_status();
+ game_redraw_board();
+ }
+
+ return 0;
+}
