linux下c語言寫的簡單的貪喫蛇

基本算是第一次在linux下寫程序，果然各種不習慣。
用的是emacs，都說是IDE中的神器，但是我還沒用習慣，gdb調試也不怎麼熟悉，linux下的c程序設計也只是看了個皮毛，所以雖然是個簡單的小程序，也絕對比在windows下寫多用了至少一倍的時間。雖然很想學好linux下c，但是無奈只能用課餘時間看。




目前已知的不足：
目前已知的不足：
1.沒加註釋，因爲懶 而且編輯器輸入法不習慣
2.全局變量可能用的多了。。
3.鏈表操作那塊，本來有更簡潔明瞭的方式，但是總出錯，我又不太會用gdb調試，於是就用笨辦法了
4.功能太簡陋 後續有精力會增加
5.多線程？等我把基礎看完再說吧
6.應該用sigaction取代signal
7.更多待發現。。。

 

 #include <stdio.h> #include <stdlib.h> #include <curses.h> #include <signal.h> #include <sys/time.h> #include <fcntl.h> #include <time.h> #define INIT_POS_X 12 #define INIT_POS_Y 40 #define INIT_SNAKE_LENGTH 5 #define MOVE_LEFT 1 #define MOVE_RIGHT 2 #define MOVE_UP 3 #define MOVE_DOWN 4 struct Snake { int pos_x; int pos_y; struct Snake *pNext; struct Snake *pPre; } *pSnakeHead,*pSnakeTail,*pSnakeTrace,*pSnakeFood; int move_dir; int is_game_over = 0; int speed[5] = {200,150,120,100,80}; int snake_len = INIT_SNAKE_LENGTH; int current_score; int levelup_score[5] = {5,10,15,20,25}; int level = 0; int life = 3; void init_wall(); void init_snake(); void show_snake(struct Snake *pSnake); void snake_move(int sig); int set_ticker(long n_msecs); void getOrder(); int is_snake_dead(); void put_food(); void eat_food(); void levelup(); void over(int i); void reset_game(); void delete_snake(); int main(void) { initscr(); clear(); curs_set(0); init_wall(); init_snake(); put_food(); set_ticker(speed[level]); noecho(); keypad(stdscr, true); getOrder(); system("stty echo"); system("clear"); endwin(); exit(0); } void init_wall() { int i; for (i = 0; i <COLS ; ++i) { move(3,i); addstr("*"); } move(2,0); printw("life: %d", life); move(2,COLS-10); printw("score:%2d",current_score); move(2,COLS/2-5); printw("level:%d",level+1); refresh(); } void init_snake() { int i; struct Snake *pSnakePre; int flag=0; pSnakeTrace = (struct Snake *)malloc(sizeof(struct Snake)); pSnakeTrace->pos_x = 0; pSnakeTrace->pos_y = 0; for (i = 0; i < INIT_SNAKE_LENGTH; ++i) { struct Snake *pSnakeBody = (struct Snake *)malloc(sizeof(struct Snake)); pSnakeBody->pos_x = INIT_POS_X; pSnakeBody->pos_y = INIT_POS_Y+INIT_SNAKE_LENGTH-i; if (flag == 0) { pSnakeHead = pSnakePre = pSnakeBody; pSnakeBody->pPre = NULL; flag++; } else { pSnakePre->pNext = pSnakeBody; pSnakeBody->pPre = pSnakePre; pSnakeBody->pNext = NULL; pSnakePre = pSnakeBody; } } pSnakeTail = pSnakePre; move_dir = MOVE_RIGHT; signal(SIGALRM,snake_move); show_snake(pSnakeHead); } int set_ticker( long n_msecs ) { struct itimerval new_timeset; long n_sec, n_usecs; n_sec = n_msecs / 1000 ; n_usecs = ( n_msecs % 1000 ) * 1000L ; new_timeset.it_interval.tv_sec = n_sec; new_timeset.it_interval.tv_usec = n_usecs; new_timeset.it_value.tv_sec = n_sec ; new_timeset.it_value.tv_usec = n_usecs ; return setitimer(ITIMER_REAL, &new_timeset, NULL); } void show_snake(struct Snake *pSnake) { while(pSnake) { move(pSnake->pos_x,pSnake->pos_y); addstr("*"); pSnake = pSnake->pNext; } move(pSnakeTrace->pos_x,pSnakeTrace->pos_y); addstr(" "); refresh(); } void snake_move(int sig) { noecho(); pSnakeTrace->pos_x = pSnakeTail->pos_x; pSnakeTrace->pos_y = pSnakeTail->pos_y; struct Snake *ptemp; ptemp = pSnakeTail->pPre; pSnakeTail->pPre->pNext = NULL; pSnakeTail->pPre = NULL; pSnakeTail->pNext = pSnakeHead; pSnakeHead->pPre = pSnakeTail; pSnakeHead = pSnakeTail; pSnakeTail = ptemp; switch(move_dir) { case MOVE_LEFT: pSnakeHead->pos_y = pSnakeHead->pNext->pos_y-1; pSnakeHead->pos_x = pSnakeHead->pNext->pos_x; break; case MOVE_RIGHT: pSnakeHead->pos_y = pSnakeHead->pNext->pos_y+1; pSnakeHead->pos_x = pSnakeHead->pNext->pos_x; break; case MOVE_UP: pSnakeHead->pos_x = pSnakeHead->pNext->pos_x-1; pSnakeHead->pos_y = pSnakeHead->pNext->pos_y; break; case MOVE_DOWN: pSnakeHead->pos_x = pSnakeHead->pNext->pos_x+1; pSnakeHead->pos_y = pSnakeHead->pNext->pos_y; break; default: break; } if ((is_game_over = is_snake_dead()) != 0) { over(is_game_over); } if ((pSnakeHead->pos_x == pSnakeFood->pos_x) && (pSnakeHead->pos_y == pSnakeFood->pos_y)) { eat_food(); put_food(); current_score++; move(2,COLS-10); printw("score:%2d",current_score); } show_snake(pSnakeHead); if (current_score == levelup_score[level]) { levelup(); } signal(SIGALRM,snake_move); } void getOrder() { while(1) { char c = getch(); switch(c) { case 'a': move_dir=MOVE_LEFT; break; case 'd': move_dir=MOVE_RIGHT; break; case 'w': move_dir=MOVE_UP; break; case 's': move_dir=MOVE_DOWN; break; case 'q': system("stty echo"); system("clear"); endwin(); exit(0); break; default: break; } } } int is_snake_dead() { struct Snake *pSnakeBody = pSnakeHead->pNext; int k=0; while(pSnakeBody) { if((pSnakeHead->pos_x == pSnakeBody->pos_x) && (pSnakeHead->pos_y == pSnakeBody->pos_y) ) { return 2; } pSnakeBody = pSnakeBody->pNext; k++; } if ((pSnakeHead->pos_x == 3) || (pSnakeHead->pos_x == LINES) || (pSnakeHead->pos_y == 0) || (pSnakeHead->pos_y == COLS) ) { return 1; } return 0; } void put_food() { int food_pos_x,food_pos_y; int rangex,rangey; int flag=0; srand(time(NULL)); rangex = LINES-4; rangey = COLS-1; struct Snake *pTemp = pSnakeHead; while(1) { flag = 0; pTemp = pSnakeHead; food_pos_x = rand()%rangex + 4; food_pos_y = rand()%rangey + 1; while(pTemp) { if ((pTemp->pos_x == food_pos_x) && (pTemp->pos_y == food_pos_y) ) { flag++; } pTemp = pTemp->pNext; } if (flag ==0) { break; } } struct Snake *pPutFood = (struct Snake *)malloc(sizeof(struct Snake)); pSnakeFood = pPutFood; pSnakeFood->pos_x = food_pos_x; pSnakeFood->pos_y = food_pos_y; pSnakeFood->pPre = NULL; pSnakeFood->pNext = NULL; move(pSnakeFood->pos_x,pSnakeFood->pos_y); addstr("0"); } void eat_food() { pSnakeFood->pNext = pSnakeHead->pNext; pSnakeHead->pNext->pPre = pSnakeFood; pSnakeHead->pNext = NULL; pSnakeTail->pNext = pSnakeHead; pSnakeHead->pPre = pSnakeTail; pSnakeTail = pSnakeHead; pSnakeHead = pSnakeFood; } void levelup() { if (level == 4) { move(0, 1); addstr("finish game ,press any key to reset game"); refresh(); set_ticker(0); char c = getchar(); level = 0; life = 3; reset_game(); } else { move(0, 1); addstr("level up ,press any key to contiune "); refresh(); set_ticker(0); char c = getchar(); level++; reset_game(); } } void delete_snake() { struct Snake *pSnake; pSnake = pSnakeHead; while(pSnake) { free(pSnake); pSnake = pSnake->pNext; } free(pSnakeFood); } void reset_game() { current_score = 0; delete_snake(); initscr(); clear(); init_wall(); init_snake(); put_food(); set_ticker(speed[level]); } void over(int i) { life--; move(2,COLS/2-5); printw("life: %d", life); if (life == 0) { move(0, 1); addstr("Game Over,press any key to reset game "); refresh(); life = 3; set_ticker(0); char c = getchar(); level = 0; reset_game(); } else { move(0, 1); if(1 == i) { addstr("Crash the wall,press any key to contiune this level"); } else if(2 == i) { addstr("Crash itself,press any key to contiune this level "); } refresh(); set_ticker(0); char c = getchar(); reset_game(); } }