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1.关于ncurse库
（1）如果没有ncurse这个库先安装ncurse库
sudo apt install libncurses5-dev
（2）在编译时后面加上 -lcurses
（3）测试代码
#include <curses.h>
int main()
{
char c;
initscr();//ncurse界面的初始化函数
printw("this is curses window.\n");//在ncurse模式下的printf
c = getch();//等待用户输入
printw("you input:%c\n",c);//用户输入一个字符
getch();
endwin();//程序退出，调用该函数来恢复shell终端的显示，如果没有这句话，shell终端乱码
return 0;
}
（4）在用ncurse获取上下左右键（在/usr/include/curses.h下用vi打开/KEY_UP找到上下左右键的定义，切用这些功能键时要用keypad函数调用）
#include <curses.h>
int main()
{
int key;//这里用char型显示字节数不够
initscr();//ncurse界面的初始化函数
keypad(stdscr,1);//参数1：从标准的stdscr接收功能键，参数2：代表是否接收
while(1)
{
key = getch();//等待用户输入
switch(key)
{
case KEY_DOWN:
printw("DOWN\n");
break;
case KEY_UP:
printw("UP\n");
break;
case KEY_LEFT:
printw("LEFT\n");
break;
case KEY_RIGHT:
printw("RIGHT\n");
break;
}
}
endwin();//程序退出，调用该函数来恢复shell终端的显示，如果没有这句话，shell终端乱码
return 0;
}
（5）贪吃蛇完整代码
#include <curses.h>
#include <stdlib.h>
#include <unistd.h>
#include <pthread.h>
#define UP 1
#define DOWN -1
#define LEFT 2
#define RIGHT -2
struct snake
{
int hang;
int lie;
struct snake *pnext;
};
//struct snake node1 = {2,2,NULL};//创建贪吃蛇节点
//struct snake node2 = {2,3,NULL};//创建贪吃蛇节点
//struct snake node3 = {2,4,NULL};//创建贪吃蛇节点
struct snake *head = NULL;
struct snake *tail = NULL;
int key;
int dir;
struct snake food;
void initFood()
{
int x = rand()%20;
int y = rand()%20;
food.hang = x;
food.lie = y;
}
//ncurse初始化函数
void initNcurse()
{
initscr();
keypad(stdscr,1);
noecho();//不要打印无关信息
}
//判断是否为贪吃蛇身子
int isSnakeNode(int i,int j)
{
struct snake *p;
p = head;
while(NULL != p)
{
if(p->hang == i && p->lie == j)
{
return 1;
}
p = p->pnext;
}
return 0;
}
//判断是否为失误
int isFood(int i,int j)
{
if(food.hang == i && food.lie == j)
{
return 1;
}
return 0;
}
//显示外围框架函数
void gamePic()
{
int hang;
int lie;
move(0,0);//移动ncurse的光标
for(hang=0;hang<20;hang++)
{
if(hang == 0)
{
for(lie=0;lie<20;lie++)
{
printw("--");
}
printw("\n");
}
if(hang >= 0 || hang <= 19)
{
for(lie=0;lie<=20;lie++)
{
if(lie == 0 || lie == 20)
{
printw("|");
}
else if(isSnakeNode(hang,lie))
{
printw("[]");
}
else if(isFood(hang,lie))
{
printw("##");
}
else
{
printw(" ");
}
}
printw("\n");
}
if(hang == 19)
{
for(lie=0;lie<20;lie++)
{
printw("--");
}
printw("\n");
printw("by zzh,key = %d,food.hang = %d,food.lie = %d\n",key,food.hang,food.lie);
}
}
}
void addNode()
{
struct snake *new = (struct snake *)malloc(sizeof(struct snake));
new->pnext = NULL;
switch(dir)
{
case UP:
new->hang = tail->hang-1;
new->lie = tail->lie;
break;
case DOWN:
new->hang = tail->hang+1;
new->lie = tail->lie;
break;
case LEFT:
new->hang = tail->hang;
new->lie = tail->lie-1;
break;
case RIGHT:
new->hang = tail->hang;
new->lie = tail->lie+1;
break;
}
tail->pnext = new;
tail = new;
}
void deleteNode()
{
struct snake *p;
p = head;
head = head->pnext;
free(p);
}
void initSnake()
{
struct snake *p;
dir = RIGHT;
while(head != NULL)
{
p = head;
head = head->pnext;
free(p);
}
initFood();
head = (struct snake *)malloc(sizeof(struct snake));
head->hang = 1;
head->lie = 1;
head->pnext = NULL;
tail = head;
addNode();
addNode();
addNode();
addNode();
}
//头撞到尾巴死掉函数
int ifSnakeDie()
{
struct snake *p;
p = head;
if(tail->hang < 0 || tail->lie == 0 || tail->hang == 20 || tail->lie == 20)
{
return 1;
}
while(NULL != p->pnext)
{
if(p->hang == tail->hang && p->lie == tail->lie)
{
return 1;
}
p = p->pnext;
}
return 0;
}
void moveSnake()
{
//struct snake *p;
//p = head;
addNode();
if(isFood(tail->hang,tail->lie))
{
initFood();
}
else
{
deleteNode();
}
if(ifSnakeDie())
{
initSnake();
}
}
//刷新界面函数
void *refreshJieMian()
{
while(1)
{
moveSnake();
gamePic();//刷新地图
refresh();//每隔100000微秒刷新界面
usleep(100000);
}
}
//转弯函数
void turn(int direction)
{
if(abs(dir) != abs(direction))//abs求绝对值
{
dir = direction;
}
}
//改变方向函数
void *changeDir()
{
sleep(1);//让另一个线程先执行，否则出现地图乱码
while(1)
{
key = getch();//等待用户输入
switch(key)
{
case KEY_DOWN:
printw("DOWN\n");
turn(DOWN);
break;
case KEY_UP:
printw("UP\n");
turn(UP);
break;
case KEY_LEFT:
printw("LEFT\n");
turn(LEFT);
break;
case KEY_RIGHT:
printw("RIGHT\n");
turn(RIGHT);
break;
}
}
}
int main()
{
pthread_t t1;
pthread_t t2;
initNcurse();
initSnake();
gamePic();
pthread_create(&t1,NULL,refreshJieMian,NULL);
pthread_create(&t2,NULL,changeDir,NULL);
while(1);
getch();
endwin();
return 0;
}
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