贪吃蛇(c实现)

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最近复习了结构体和链表,就想熟悉一下这些应用,因此观摩大佬写的贪吃蛇,自己照葫芦画瓢也写了一个出来.源博客地址为:贪吃蛇(c实现)
不过我对此有一个方面的改动:
1.蛇不能在左移或者右移时,实现右移或者左移,或者上移或者下移时进行下移或者上移
下面为代码:

#include <stdio.h> #include <stdlib.h> #include <windows.h> #include <conio.h> #include <time.h> void gotoxy(int x,int y); void welcome(); void start(); void print(); void del(); void change(int a,int b); int control(); void move(); void create_food(); void eat(); void over(); int fail(); typedef struct Snake { int x; int y; Snake *next; }snake; struct Food { int x; int y; }food; char id[20];//玩加名称 int num = 0;//食物数量 snake *head;//头部 snake *tail;//尾巴 char key;//按键的获取 int score = 0;//分数 int count = 0;//小蛇身体长度 char ans[10]; int left = 1; int up = 1; int down = 1; int right = 1; int main() { welcome(); start(); if(!control()) { over(); } return 0; } //光标的控制 void gotoxy(int x,int y) { HANDLE handle; COORD coord; handle = GetStdHandle(STD_OUTPUT_HANDLE); coord.X = x; coord.Y = y; SetConsoleCursorPosition(handle,coord); } //打印空格来表示小蛇的身体 void print(int x,int y) { gotoxy(x,y); printf("■"); } //打印空格来删除食物,或者小蛇的身体 void del(int x,int y) { gotoxy(x,y); printf(" "); } //游戏初始界面 void welcome() { system("color 0B"); gotoxy(55,7); printf("welcome"); gotoxy(20,8); printf("*"); gotoxy(20,10); printf("游戏名称:贪吃蛇"); gotoxy(20,11); printf("游戏说明:wsad为上下左右键,任意键为暂停键"); gotoxy(20,12); printf("请输入你的ID:"); gotoxy(20,13); printf("温馨提示:祝您游戏愉快\n"); gotoxy(20,15); printf("*"); gotoxy(33,12); gets(id); } //游戏开始界面 void start() { int x = 0; int y = 0; system("cls"); for(int i=0;i<20; i++) { printf("■"); } gotoxy(x,y); for(int i=0;i<20; i++) { printf("■"); gotoxy(x,y++); } gotoxy(x,y-=1); for(int i=0;i<20; i++) { printf("■"); gotoxy(x+=2,y); } gotoxy(x-=2,y); for(int i=0; i<20; i++) { printf("■"); gotoxy(x,y--); } //蛇的初始化 head = (snake*)malloc(sizeof(snake)); tail = (snake*)malloc(sizeof(snake)); snake *p = (snake*)malloc(sizeof(snake)); head->x = 10; head->y = 10; p->x = 12; p->y = 10; tail->x = 14; tail->y = 10; head->next = p; p->next = tail; tail->next = NULL; gotoxy(47,0); printf("Menu:"); gotoxy(47,2); printf("ID:%s",id); gotoxy(47,4); printf("score:%d",score); gotoxy(47,6); printf("Game introduction:w->up,s->down,a->left,d->right"); gotoxy(47,8); printf("ant other keys to stop the game"); gotoxy(0,24); } //整个程序的控制 int control() { while(1) { if(_kbhit()) { key = _getch(); } if(num == 0) create_food(); gotoxy(0,22); move(); gotoxy(0,22); eat(); gotoxy(0,22); if(!fail()) return 0; } return 1; } //通过按键控制小蛇 void move() { snake *p = head; int a = p->x; int b = p->y; while(p->next != NULL) { del(p->x,p->y); p = p->next; } del(p->x,p->y); switch(key) { case 'w': if(up) { head->y-=1; change(a,b); up = 1; down = 0; left = 1; right = 1; break; } break; case 's': if(down) { head->y+=1; change(a,b); up = 0; down = 1; left = 1; right = 1; break; } break; case 'a': if(left) { head->x-=2; change(a,b); up = 1; down = 1; left = 1; right = 0; break; } break; case 'd': if(right) { head->x+=2; change(a,b); up = 1; down = 1; left = 0; right = 1; break; } break; default: break; } p = head; gotoxy(p->x,p->y); printf("⊙"); p = p->next; while(p->next != NULL) { print(p->x,p->y); p = p->next; } print(p->x,p->y); Sleep(100+count*10); } //改变链表每个节点的x,y来实现移动 void change(int a,int b) { snake *p = head->next; int mid1,mid2,_mid1,_mid2; mid1 = a; mid2 = b; while(p->next != NULL) { _mid1 = p->x; _mid2 = p->y; p->x = mid1; p->y = mid2; mid1 = _mid1; mid2 = _mid2; p = p->next; } p->x = mid1; p->y = mid2; } //创造食物 void create_food() { srand(time(NULL)); int r_x = rand()%35+2; int r_y = rand()%18+1; snake *p = head; while(1) { if((r_x == p->x && r_y == p->y) || r_x % 2 != 0) { p = head; r_x = rand()%35+2; r_y = rand()%18+1; } if(p->next == NULL) break; else p = p->next; } food.x = r_x; food.y = r_y; num = 1;; gotoxy(r_x,r_y); printf("⊙"); } //吃食物,增加蛇的长度 void eat() { snake *p = head; if(p->x == food.x && p->y == food.y) { snake *_new = (snake *)malloc(sizeof(snake)); while(p->next != NULL) p = p->next; p->next = _new; _new->next = NULL; num = 0; score+=10; count++; gotoxy(47,0); printf("socre = %d",score); } } //失败的条件 int fail() { snake *p = head; if(p->x <= 1 || p->x >= 38 || p->y <= 0 || p->y >= 19) return 0; else { p = p->next; while(1) { if(head->x == p->x && p->y == head->y) { return 0; } if(p->next != NULL) p = p->next; else break; } } return 1; } //游戏结束画面 void over() { system("cls"); gotoxy(55,7); printf("game over"); gotoxy(20,8); printf("*"); gotoxy(20,10); printf("your score:%d",score); gotoxy(20,11); printf("come on!"); gotoxy(20,13); printf("*"); }