一个能在Telnet或SSH终端玩的贪食蛇小游戏
//snake.h#define SHM_KEY 1234#define UP119#define DOWN115#define LEFT 97#define RIGHT100#define QUIT122#define direct(*((int *)p_shm))extern void *p_shm;extern int v_speed;extern void snake_init();extern int snake_nextstep();#include "snake.h"#include <unistd.h>#include <stdlib.h>#include <stdio.h>#include <curses.h>#include <string.h>#include <sys/types.h>#define START_X 10#define START_Y 10#define INIT_SIZ 5#define H_LEN80#define V_LEN35int screen_arr;int snake_len = 0;extern int v_speed;/* Snake Body Node */typedef struct node{int pos_x;int pos_y;struct node *next;struct node *pre;}BNode;BNode *s_head, *s_end;/************************************************ *functions declare ***********************************************/extern void snake_init();static void snake_display();static inline void snake_feed();static inline void snake_head_grow(int px, int py);static inline void snake_tail_cut();extern void snake_init(){s_head = (BNode *)malloc(sizeof(BNode));s_head->pos_x = START_X;s_head->pos_y = START_Y;s_head->next = NULL;s_head->pre = NULL;s_end = s_head;screen_arr = 1;int i;for (i = 1; i < INIT_SIZ; i++) snake_head_grow(START_X + i, START_Y);snake_feed();snake_display();}extern int snake_nextstep(){int next_px = s_head->pos_x;int next_py = s_head->pos_y;switch (direct) {case UP: next_py--;break;case RIGHT:next_px++;break;case DOWN:next_py++;break;case LEFT:next_px--;break;}int pos = next_px + next_py * H_LEN;/* grip itself */if (screen_arr == 1)return ERR;/* up against the wall */if (next_px < 0 || next_px >= H_LEN || next_py < 0 || next_py >= V_LEN)return ERR;int grow = 0;/* eat a food */if (screen_arr == 2) {grow = 1;snake_len++;snake_feed();}snake_head_grow(next_px, next_py);if (!grow) snake_tail_cut();snake_display();return OK;}static void snake_display(){printw(" Hungry Snake -- Enjoy it! :)\n");printw("+---------------------------------------------" "-----------------------------------+\n");int i, j;for (i = 0; i < V_LEN; i++){printw("|");for(j = 0; j < H_LEN; j++) {int pos = i * H_LEN + j;printw("%c", screen_arr == 0 ? ' ' : (screen_arr == 1) ? '#' : '$');}printw("|\n");}printw("+---------------------------------------------" "-----------------------------------+\n");printw("Direction: %s\n", direct == UP ? "Up" : (direct == DOWN ? "Down" : (direct == LEFT ? "Left" : "Right")));printw("Scores: %d", snake_len);refresh();}/******************************************************** * static functions ********************************************************/static inline void snake_feed(){int pos = rand() % (H_LEN * V_LEN);while (screen_arr == 1) pos = rand() % (H_LEN * V_LEN);screen_arr = 2;v_speed -= 10;}static inline void snake_head_grow(int px, int py){BNode *p = (BNode *)malloc(sizeof(BNode));p->pos_x = px;p->pos_y = py;p->pre = NULL;p->next = s_head;s_head->pre = p;s_head = p;screen_arr = 1;}static inline void snake_tail_cut(){screen_arr = 0;s_end = s_end->pre;free(s_end->next);s_end->next = NULL;}
//usr_handler.c#include "snake.h"#include <unistd.h>#include <stdlib.h>#include <stdio.h>#include <curses.h>#include <string.h>#include <sys/types.h>#include <sys/ipc.h>#include <sys/shm.h>#include <sys/wait.h>#include <time.h>static void wait_user_handle();void *p_shm = NULL;int shmid = 0;;int v_speed = 200;int main(int argc, char *argv[]){pid_t pid;initscr();if ((pid = fork()) == 0) {sleep(2);shmid = shmget((key_t) SHM_KEY, sizeof(int), 0666 | IPC_CREAT);p_shm = shmat(shmid, (void *) 0, 0);struct timespec slp = { (time_t) 0, 1000000 * v_speed };snake_init();while (true) {if (direct == QUIT)break;clear();snake_nextstep();/* sleep specified nanoseconds and continue to run. */slp.tv_nsec = 1000000 * v_speed;nanosleep(&slp, NULL);}shmdt(p_shm);} else {/* create shared memory by parent process. */shmid = shmget((key_t) SHM_KEY, sizeof(int), 0666 | IPC_CREAT);if (shmid == -1) {printw("shmget failed!\n");exit(EXIT_FAILURE);}p_shm = shmat(shmid, (void *) 0, 0);wait_user_handle();waitpid(pid, NULL, 0);/* destroy shared memory by parent process. */shmdt(p_shm);shmctl(shmid, IPC_RMID, 0);endwin();} exit(EXIT_SUCCESS);} static void wait_user_handle(){int i;int run = true;int UP_DOWN = UP + DOWN;int LEFT_RIGHT = LEFT + RIGHT;int sum;while (run) {noecho();i = getch();echo();switch (i) {case UP:case DOWN:case LEFT:case RIGHT:sum = i + direct;if(sum != UP_DOWN && sum != LEFT_RIGHT)direct = i;break;case QUIT:run = false;direct = i;break;}}}
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