update src

src/main.c

+#include<curses.h>
+#include<stdlib.h>
+#define up 1 //1与-1的目的是使用abs()函数防止一上一下
+#define down -1
+#define left 2
+#define right -2
+struct snake{ //创建一个结构体
+ int hang;
+ int lie;
+ struct snake *next;
+};
+struct snake *head = null; //全局定义一个头和尾
+struct snake *tail= null;
+int key; //定义一个按键的整形变量
+int dir;//定义一个方向的整形变量
+struct snake food;
+void initfood(){ //定义一个食物## 可以随机生成
+ int x = rand()%19;
+ int y = rand()%19;
+ food.hang = x;
+ food.lie = y;
+}
+void initncurse(){
+ initscr();
+ keypad(stdscr,1);
+ noecho();
+}
+int hassnakenode(int i, int j){ //显示蛇身体
+ struct snake *p;
+ p = head;
+ while(p != null){
+ if(p->hang == i && p ->lie == j){
+ return 1;
+ }
+ p = p->next;
+ }
+ return 0;
+}
+int hasfood(int i,int j){ //有食物
+ if(food.hang == i && food.lie == j){
+ return 1;
+ }
+ return 0;
+}
+void gamepic(){ //游戏图形化展示
+ int hang;
+ int lie;
+ move(0,0);
+ 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(hassnakenode(hang,lie)){
+  printw("[]");
+ }else if(hasfood(hang,lie)){
+  printw("##");
+ }
+ else{
+  printw(" ");
+ }
+ }
+ printw("\n");
+ }
+ if(hang == 19){
+ for(lie=0;lie<20;lie++){
+ printw("--");
+ }
+ printw("\n"); 
+ printw("by ricko");
+ }
+ }
+}
+void addnode(){ //加头并且方向
+ struct snake *new = (struct snake *)malloc(sizeof(struct snake));
+ new->next = 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->next = new;
+ tail = new;
+}
+void initsnake(){ //初始化蛇
+ struct snake *p;
+ dir = right;
+ while(head != null){
+ p = head;
+ head = head->next;
+ free(p);
+ }
+ initfood(); 
+ head = (struct snake *)malloc(sizeof(struct snake));
+ head->hang = 1;
+ head->lie = 1;
+ head->next = null;
+ tail = head;
+ addnode();
+ addnode();
+ addnode();
+ addnode();
+}
+void delenode(){ //删除最后节点
+ struct snake *p;
+ p = head;
+ head = head->next;
+ free(p);
+}
+int ifsnakedie(){ //在撞到边界以及自己迟到自己的时候会输出一个1让自己复活
+ struct snake *p;
+ p = head;
+ if(tail->hang < 0 || tail->lie == 0 || tail->hang == 20 || tail->lie == 20){
+ return 1;
+ }
+ while(p->next != null){
+ if(p->hang == tail->hang && p->lie == tail->lie){
+ return 1;
+ }
+ p = p->next;
+ }
+ return 0;
+}
+void movesnake(){ //蛇的移动
+ addnode();
+ if(hasfood(tail->hang,tail->lie)){ //如果吃到食物就不删除最后的节点
+ initfood();
+ }else{
+ delenode();
+ }
+ if(ifsnakedie()){
+ initsnake(); 
+ }
+}
+void refreshjiemian(){ //刷新界面 线程
+ while(1){
+ movesnake();
+ gamepic();
+ refresh();
+ usleep(150000); //刷新频率
+ }
+}
+void turn(int direction){ //防止方向键按了上又按下
+ if(abs(dir) != abs(direction)){
+ dir = direction;
+ }
+}
+void changedir(){ //改变方向
+ while(1){
+ key = getch();
+ switch(key){
+ case key_down:
+ turn(down);
+ break;
+ case key_up:
+ turn(up);
+ break;
+ case key_left:
+ turn(left);
+ break;
+ case key_right:
+ turn(right);
+ break;
+ }
+ }
+}
+int main(){
+ pthread_t t1; //定义线程1
+ pthread_t t2; 
+ initncurse(); //初始化ncurse
+ initsnake(); //初始化蛇
+ gamepic();  //初始化界面
+ pthread_create(&t1,null,refreshjiemian,null);//启动线程里面的函数
+ pthread_create(&t2,null,changedir,null);
+ while(1);//线程3
+ getch();
+ endwin();
+ return 0;
+}
\ No newline at end of file