Linux环境下C语言实现贪吃蛇游戏
[liul@test snake]$ more snake.c #include <stdio.h> #include <stdlib.h> #include <curses.h> #include <signal.h> #include <sys/time.h> #define NUM 60 struct direct //用来表示方向的 { int cx; int cy; }; typedef struct node //链表的结点 { int cx; int cy; struct node *back; struct node *next; }node; void initGame(); //初始化游戏 int setTicker(int); //设置计时器 void show(); //显示整个画面 void showInformation(); //显示游戏信息(前两行) void showSnake(); //显示蛇的身体 void getOrder(); //从键盘中获取命令 void over(int i); //完成游戏结束后的提示信息 void creatLink(); //(带头尾结点)双向链表以及它的操作 void insertNode(int x, int y); void deleteNode(); void deleteLink(); int ch; //输入的命令 int hour, minute, second; //时分秒 int length, tTime, level; //(蛇的)长度,计时器,(游戏)等级 struct direct dir, food; //蛇的前进方向,食物的位置 node *head, *tail; //链表的头尾结点 int main() { initscr(); [liul@test snake]$ more snake.c #include <stdio.h> #include <stdlib.h> #include <curses.h> #include <signal.h> #include <sys/time.h> #define NUM 60 struct direct //用来表示方向的 { int cx; int cy; }; typedef struct node //链表的结点 { int cx; int cy; struct node *back; struct node *next; }node; void initGame(); //初始化游戏 int setTicker(int); //设置计时器 void show(); //显示整个画面 void showInformation(); //显示游戏信息(前两行) void showSnake(); //显示蛇的身体 void getOrder(); //从键盘中获取命令 void over(int i); //完成游戏结束后的提示信息 void creatLink(); //(带头尾结点)双向链表以及它的操作 void insertNode(int x, int y); void deleteNode(); void deleteLink(); int ch; //输入的命令 int hour, minute, second; //时分秒 int length, tTime, level; //(蛇的)长度,计时器,(游戏)等级 struct direct dir, food; //蛇的前进方向,食物的位置 node *head, *tail; //链表的头尾结点 int main() { initscr(); initGame(); signal(SIGALRM, show); getOrder(); endwin(); return 0; } void initGame() { cbreak(); //把终端的CBREAK模式打开 noecho(); //关闭回显 curs_set(0); //把光标置为不可见 keypad(stdscr, true); //使用用户终端的键盘上的小键盘 srand(time(0)); //设置随机数种子 //初始化各项数据 hour = minute = second = tTime = 0; length = 1; dir.cx = 1; dir.cy = 0; ch = 'A'; food.cx = rand() % COLS; food.cy = rand() % (LINES-2) + 2; creatLink(); setTicker(20); } //设置计时器(这个函数是书本上的例子,有改动) int setTicker(int 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; n_msecs = 1; n_sec = n_msecs / 1000 ; n_usecs = ( n_msecs % 1000 ) * 1000L ; new_timeset.it_value.tv_sec = n_sec ; new_timeset.it_value.tv_usec = n_usecs ; return setitimer(ITIMER_REAL, &new_timeset, NULL); } void showInformation() { tTime++; if(tTime >= 1000000) // tTime = 0; if(1 != tTime % 50) return; move(0, 3); //显示时间 printw("time: %d:%d:%d %c", hour, minute, second); second++; if(second > NUM) { second = 0; minute++; } if(minute > NUM) { minute = 0; hour++; } //显示长度,等级 move(1, 0); int i; for(i=0;i<COLS;i++) addstr("-"); move(0, COLS/2-5); printw("length: %d", length); move(0, COLS-10); level = length / 3 + 1; printw("level: %d", level); } //蛇的表示是用一个带头尾结点的双向链表来表示的, //蛇的每一次前进,都是在链表的头部增加一个节点,在尾部删除一个节点 //如果蛇吃了一个食物,那就不用删除节点了 void showSnake() { if(1 != tTime % (30-level)) return; //判断蛇的长度有没有改变 bool lenChange = false; //显示食物 move(food.cy, food.cx); printw("@"); //如果蛇碰到墙,则游戏结束 if((COLS-1==head->next->cx && 1==dir.cx) || (0==head->next->cx && -1==dir.cx) || (LINES-1==head->next->cy && 1==dir.cy) || (2==head->next->cy && -1==dir.cy)) { over(1); return; } //如果蛇头砬到自己的身体,则游戏结束 if('*' == mvinch(head->next->cy+dir.cy, head->next->cx+dir.cx) ) { over(2); return; } insertNode(head->next->cx+dir.cx, head->next->cy+dir.cy); //蛇吃了一个“食物” if(head->next->cx==food.cx && head->next->cy==food.cy) { lenChange = true; length++; //恭喜你,通关了 if(length >= 50) { over(3); return; } //重新设置食物的位置 food.cx = rand() % COLS; food.cy = rand() % (LINES-2) + 2; } if(!lenChange) { move(tail->back->cy, tail->back->cx); printw(" "); deleteNode(); } move(head->next->cy, head->next->cx); printw("*"); } void show() { signal(SIGALRM, show); //设置中断信号 showInformation(); showSnake(); refresh(); //刷新真实屏幕 } void getOrder() { //建立一个死循环,来读取来自键盘的命令 while(1) { ch = getch(); if(KEY_LEFT == ch) { dir.cx = -1; dir.cy = 0; } else if(KEY_UP == ch) { dir.cx = 0; dir.cy = -1; } else if(KEY_RIGHT == ch) { dir.cx = 1; dir.cy = 0; } else if(KEY_DOWN == ch) { dir.cx = 0; dir.cy = 1; } setTicker(20); } } void over(int i) { //显示结束原因 move(0, 0); int j; for(j=0;j<COLS;j++) addstr(" "); move(0, 2); if(1 == i) addstr("Crash the wall. Game over"); else if(2 == i) addstr("Crash itself. Game over"); else if(3 == i) addstr("Mission Complete"); setTicker(0); //关闭计时器 deleteLink(); //释放链表的空间 } //创建一个双向链表 void creatLink() { node *temp = (node *)malloc( sizeof(node) ); head = (node *)malloc( sizeof(node) ); tail = (node *)malloc( sizeof(node) ); temp->cx = 5; temp->cy = 10; head->back = tail->next = NULL; head->next = temp; temp->next = tail; tail->back = temp; temp->back = head; } //在链表的头部(非头结点)插入一个结点 void insertNode(int x, int y) { node *temp = (node *)malloc( sizeof(node) ); temp->cx = x; temp->cy = y; temp->next = head->next; head->next = temp; temp->back = head; temp->next->back = temp; } //删除链表的(非尾结点的)最后一个结点 void deleteNode() { node *temp = tail->back; node *bTemp = temp->back; bTemp->next = tail; tail->back = bTemp; temp->next = temp->back = NULL; free(temp); temp = NULL; } //删除整个链表 void deleteLink() { while(head->next != tail) deleteNode(); head->next = tail->back = NULL; free(head); free(tail); }
运行
[liul@test snake]$ [liul@test snake]$ gcc snake.c -lcurses -o snake [liul@test snake]$ ./snake