Game: Snake v1
by Shinigami on Apr.21, 2012, under C++
This is a text based snake game in terminal. It is made as a class object. And it has GNU GPL license.
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/* Copyright 2012 Donatas Azaravicius * Program is distributed under the terms of the GNU General Public License * * Text based snake game * @author: Donatas Azaravicius * homepage: cplusplus.shinigami.lt * version v1 * date: 2012:04:21 * * This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <iostream> #include <deque> #include <ctime> #include <cstdlib> #include <string> using namespace std; #define MS_WELCOME "Welcome to snake game!" #define MS_MENU "Choose what you want to do." #define MS_CHOICE_1 "1 Play a game" #define MS_CHOICE_2 "2 About" #define MS_EXIT "3 Exit game" #define MS_END "GAME OVER" #define MS_MOVE_1 "Pick one: move up (" #define MS_MOVE_2 "), down (" #define MS_MOVE_3 "), left (" #define MS_MOVE_4 ") or right (" #define MS_MOVE_5 "): " #define MS_CHOICE_3 "Enter your choice number here: " #define MS_END_CHOICE "You lost the game. Do you want to try again? YES (y) or NO (n)." #define MS_WRONG_INPUT "Wrong input: " #define MS_RETURN_TO_MENU "Enter leter to return to menu: " #define MS_AUTHOR "Autor: Donatas Azaravicius" #define MS_HOMEPAGE "Homepage: cplusplus.shinigami.lt" #define MS_DATE "Date of release: 2012:04:21" #define MS_VERSION "Version: v1" // Start of file element.h class Element { public: int x, y; Element(int, int); Element() {}; ~Element() {}; bool operator == (const Element & right) const; }; // Finish of file element.h // Start of file element.cpp Element::Element(int x_in, int y_in) : x(x_in), y(y_in) { } bool Element::operator == (const Element & right) const { return (x == right.x && y == right.y); } // Finish of file element.cpp // Start of file snake.h class Snake { public: Snake(); ~Snake(); void move(); bool gameover() const; private: deque<Element> body; Element food_xy; char direction; char end_choice; bool gameover_var; int menu_choice; static const int field_width = 40; static const int field_hight = 22; static const char field_simbol = ' '; static const char snake_head = '@'; static const char snake_simbol = '~'; static const char space = ' '; static const char wall_simbol = '#'; static const char food_simbol = 'F'; static const char direction_right = 'd'; static const char direction_left = 'a'; static const char direction_down = 's'; static const char direction_up = 'w'; static const char yes = 'y'; static const char no = 'n'; char field[field_hight][field_width]; //methods void make_field(); void menu(); void show_field() const; void choice(int); void ms_generator(string, int, int column = 0); bool go(); bool is_wall(Element) const; void eat_food(); void food(); void fill_field(); bool check(); void restart(); void about(); }; // Finish of file snake.h // Start of file snake.cpp // Public methods Snake::Snake() { restart(); } Snake::~Snake() { } bool Snake::gameover() const { return gameover_var; } void Snake::move() { if (menu_choice == 1) { if (food_xy == body[0]) { food(); } if (go()) { ms_generator(MS_END, field_hight / 2); gameover_var = true; } else if (check()) { ms_generator(MS_END, field_hight / 2); gameover_var = true; } } else if (menu_choice == 2) { make_field(); about(); } else if (menu_choice == 3) { make_field(); ms_generator(MS_END, field_hight / 2); gameover_var = true; } show_field(); if (gameover_var == false && menu_choice == 1) { choice(2); } else if (gameover_var == false && menu_choice == 2) { choice(4); restart(); } else if (gameover_var == true && menu_choice != 3) { choice(3); if (end_choice == yes) { restart(); } else { show_field(); } } return; } //End of public methods //Private methods void Snake::make_field() { for(int i = 0; i < field_hight; i++) { for(int j = 0; j < field_width; j++) { if (j == 0 or j == (field_width - 1)) { field[i][j] = wall_simbol; } else if (i == 0 or i == (field_hight - 1)) { field[i][j] = wall_simbol; } else { field[i][j] = field_simbol; } } } return; } void Snake::menu() { ms_generator(MS_WELCOME, 3); ms_generator(MS_MENU, 5); ms_generator(MS_CHOICE_1, 7, 10); ms_generator(MS_CHOICE_2, 8, 10); ms_generator(MS_EXIT, 9, 10); return; } void Snake::show_field() const { for(int i = 0; i < field_hight; i++) { for(int j = 0; j < field_width; j++) { cout << field[i][j]; if (i == 0 or i == (field_hight - 1)) cout << wall_simbol; else cout << space; } cout << endl; } cout << endl; return; } void Snake::choice(int number) { char temp; if (number == 1) { cout << MS_CHOICE_3; do { cin >> menu_choice; if (menu_choice > 0 && menu_choice < 4) { break; } cout << MS_WRONG_INPUT; cin.clear(); cin.ignore(); } while(true); } else if (number == 2) { string ms = MS_MOVE_1; ms += direction_up; ms += MS_MOVE_2; ms += direction_down; ms += MS_MOVE_3; ms += direction_left; ms += MS_MOVE_4; ms += direction_right; ms += MS_MOVE_5; cout << ms; do { cin >> direction; if (direction == direction_right || direction == direction_left || direction == direction_up || direction == direction_down) { break; } cout << MS_WRONG_INPUT; } while(true); } else if (number == 3) { cout << MS_END_CHOICE; do { cin >> end_choice; if (end_choice == yes || end_choice == no) { break; } cout << MS_WRONG_INPUT; } while(true); } else if (number == 4) { cout << MS_RETURN_TO_MENU; cin >> temp; } return; } void Snake::ms_generator(string ms, int place, int column) { size_t ms_size = ms.length(); if (column == 0) { column = field_width / 2 - ms_size / 2; } for (size_t i = 0; i < ms_size; i++) { field[place][column + i] = ms[i]; } return; } bool Snake::go() { Element temp, first, second; temp = first = body.front(); bool big_snake = true; if ((int) body.size() > 1) { second = body[1]; } else { big_snake = false; } if (direction == direction_right) { temp.x++; if (is_wall(temp)) { return true; } if (big_snake) { if (second == temp) { return true; } first.x++; } else { first.x++; } } else if (direction == direction_left) { temp.x--; if (is_wall(temp)) { return true; } if (big_snake) { if (second == temp) { return true; } first.x--; } else { first.x--; } } else if (direction == direction_down) { temp.y++; if (is_wall(temp)) { return true; } if (big_snake) { if (second == temp) { return true; } first.y++; } else { first.y++; } } else if (direction == direction_up) { temp.y--; if (is_wall(temp)) { return true; } if (big_snake) { if (second == temp) { return true; } first.y--; } else { first.y--; } } else { return true; } body.push_front(first); eat_food(); body.pop_back(); fill_field(); return false; } bool Snake::is_wall(Element element) const { if (field[element.y][element.x] == wall_simbol) { return true; } return false; } void Snake::eat_food() { if (body[0] == food_xy) { Element temp(0, 0); body.push_back(temp); food(); } return; } void Snake::food() { srand(time(0)); int rand_numberY = rand() % (field_hight - 2) + 1; int rand_numberX = rand() % (field_width - 2) + 1; if (field[rand_numberY][rand_numberX] == field_simbol && rand_numberX > 0 && rand_numberY > 0) { food_xy.x = rand_numberX; food_xy.y = rand_numberY; } else { food(); } return; } void Snake::fill_field() { make_field(); Element temp; deque<Element>::iterator it; it = body.begin(); do { if (*it == body[0]) { field[(*it).y][(*it).x] = snake_head; } else { field[(*it).y][(*it).x] = snake_simbol; } it++; } while (it != body.end()); if (food_xy == body[0]) { food(); } field[food_xy.y][food_xy.x] = food_simbol; return; } bool Snake::check() { if (body.size() < 2) { return false; } deque<Element>::iterator it; it = body.begin() + 1; while (it != body.end()) { if (*body.begin() == *it) { return true; } it++; } return false; } void Snake::restart() { body.clear(); Element temp(field_width / 2, field_hight / 2); body.push_back(temp); food_xy = temp; gameover_var = false; direction = direction_right; make_field(); menu(); show_field(); choice(1); return; } void Snake::about() { ms_generator(MS_AUTHOR, 3, 5); ms_generator(MS_HOMEPAGE, 4, 5); ms_generator(MS_VERSION, 5, 5); ms_generator(MS_DATE, 6, 5); return; } // Finish of file snake.cpp int main() { Snake snake_game; while (!snake_game.gameover()) { snake_game.move(); } int goodby; cout << "Goodby dear player. Enter number to exit: "; cin >> goodby; return 0; } |
