一、贪吃蛇小游戏简介：
用上下左右控制蛇的方向，寻找吃的东西，每吃一口就能得到一定的积分，而且蛇的身子会越吃越长，身子越长玩的难度就越大，不能碰墙，也不能咬到自己的身体，等到了一定的分数，就能过关。
二、函数框架
三、数据结构
typedef struct Snake
{
size_t x; //行
size_t y; //列
struct Snake* next;
}Snake, *pSnake;
定义蛇的结构体，利用单链表来表示蛇，每个结点为蛇身体的一部分。
四、代码实现（vs2010 c语言）
1.Snake.h
#ifndef __SNAKE_H__
#define __SNAKE_H__
#include
#include
#include
#include
#include
#include
//标识地图大小
#define ROW_MAP 10 //地图的行
#define COL_MAP 20 //地图的列
#define SUCCESS_SCORE 10//通关分数
enum Direction //蛇行走的方向
{
R,//右
L,//左
U,//上
D//下
}Direction;
enum State
{
ERROR_SELF,//咬到自己
ERROR_WALL,//撞到墙
NORMAL,//正常状态
SUCCESS//通关
}State;
typedef struct Snake
{
size_t x; //行
size_t y; //列
struct Snake* next;
}Snake, *pSnake;
void StartGame();
void RunGame();
void EndGame();
#endif
2.Snake.c
#include "Snake.h"
pSnake head = NULL;//定义蛇头指针
pSnake Food = NULL;//定义食物指针
int sleeptime = 500;//间隔时间，用来控制速度
int Score = 0; //总分
int everyScore = 1; //每步得分
//定义游戏中用到的符号
const char food = '#';
const char snake = '*';
void Pos(int x, int y) //控制输出光标
{
COORD pos;//pos为结构体
pos.X = x;//控制列
pos.Y = y;//控制行
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), pos);//读取标准输出句柄来控制光标为pos
}
void Face()
{
system("color 0C");
printf("*******************************************************\n");
printf("* Welcome to Snake Game! *\n");
printf("* *\n");
printf("* ->开始游戏请按 enter键 *\n");
printf("* ->退出游戏请按 esc键 *\n");
printf("* ->暂停游戏请按 space键 *\n");
printf("* ->通过上下左右键来控制蛇的移动 *\n");
printf("* ->通过F1键减速 F2键加速 *\n");
printf("*******************************************************\n");
}
void Map() //初始化地图
{
int i = 0;
for(i = 0; i
{
Pos(i, 0);
printf("■");
Pos(i, ROW_MAP-1);
printf("■");
}
for(i = 0; i
{
Pos(0, i);
printf("■");
Pos(COL_MAP-2, i);
printf("■");
}
}
void PrintSnake() //打印蛇
{
pSnake cur = head;
while(cur)
{
Pos(cur->y, cur->x);
printf("%c", snake);
cur = cur->next;
}
}
void InitSnake() //初始化蛇身
{
int initNum = 3;
int i = 0;
pSnake cur;
head = (pSnake)malloc(sizeof(Snake));
head->x = 5;
head->y = 10;
head->next = NULL;
cur = head;
for(i = 1; i < initNum; i++)
{
pSnake newNode = (pSnake)malloc(sizeof(Snake));
newNode->x = 5+i;
newNode->y = 10;
newNode->next = NULL;
cur->next = newNode;
cur = cur->next;
}
PrintSnake();
}
void CreateFood() //在地图上随机产生一个食物
{
pSnake cur = head;
Food = (pSnake)malloc(sizeof(Snake));
//产生x~y的随机数 k=rand()%(Y-X+1)+X;
srand((unsigned)time(NULL));
Food->x = rand()%(ROW_MAP-2 - 1 + 1)+1;
Food->y = rand()%(COL_MAP-3 - 2 + 1)+2;
Food->next = NULL;
while(cur) //检查食物是否与蛇身重合
{
if(cur->x == Food->x && cur->y == Food->y)
{
free(Food);
Food = NULL;
CreateFood();
return;
}
cur = cur->next;
}
Pos(Food->y, Food->x);
printf("%c", food);
}
void StartGame() //游戏开始的所有设置
{
Face();
system("pause");
if(GetAsyncKeyState(VK_RETURN))
{
system("cls");
Pos(COL_MAP+5, 1);
printf("当前分数/通关分数:");
Pos(COL_MAP+20, 1);
printf("%d/%d", Score, SUCCESS_SCORE);
Pos(COL_MAP+5, 2);
printf("当前分每步得分:");
Pos(COL_MAP+20, 2);
printf("%d", everyScore);
Pos(COL_MAP+5, 3);
printf("\n");
Pos(COL_MAP+5, 4);
printf("速度越快 得分越高哦！！\n");
Map();
InitSnake();
CreateFood();
}
else if(GetAsyncKeyState(VK_ESCAPE))
{
exit(0);
}
}
int IsCrossWall() //判断是否碰到墙
{
if(head->x <= 0 || head->x >= ROW_MAP-1
||head->y <= 1 || head->y >= COL_MAP-2)
{
State = ERROR_WALL;
return 0;
}
return 1;
}
int IsEatSelf(pSnake newHead) //判断是否咬到自己
{
pSnake cur = head;
assert(newHead);
while(cur)
{
if(cur->x == newHead->x && cur->y == newHead->y)
{
State = ERROR_SELF;
return 0;
}
cur = cur->next;
}
return 1;
}
int IsFood(pSnake pos) //判断该位置是不是食物
{
assert(pos);
if(pos->x == Food->x && pos->y == Food->y)
{
return 1;
}
return 0;
}
void SnakeMove() //蛇移动一次
{
pSnake newHead = NULL;
newHead = (pSnake)malloc(sizeof(Snake));
if(Direction == R)
{
newHead->x = head->x;
newHead->y = head->y+1;
newHead->next = head;
}
else if(Direction == L)
{
newHead->x = head->x;
newHead->y = head->y-1;
newHead->next = head;
}
else if(Direction == U)
{
newHead->x = head->x-1;
newHead->y = head->y;
newHead->next = head;
}
else if(Direction == D)
{
newHead->x = head->x+1;
newHead->y = head->y;
newHead->next = head;
}
if(IsFood(newHead))
{
head = newHead;
PrintSnake();
CreateFood();
Score += everyScore;
Pos(COL_MAP+20, 1);
printf("%d/%d", Score, SUCCESS_SCORE);
if(Score >= SUCCESS_SCORE)
{
State = SUCCESS;
}
}
else
{
if(IsCrossWall() && IsEatSelf(newHead))
{
pSnake cur = NULL;
head = newHead;
cur = head;
//删除蛇尾并打印
while(cur->next->next != NULL)
{
Pos(cur->y, cur->x);
printf("%c", snake);
cur = cur->next;
}
Pos(cur->y, cur->x);
printf("%c", snake);
Pos(cur->next->y, cur->next->x);
printf(" "); //打印空格来覆盖频幕上的蛇尾
free(cur->next);
cur->next = NULL;
}
else
{
free(newHead);
newHead = NULL;
}
}
}
void Pause()
{
while(1)
{
Sleep(sleeptime);
if(GetAsyncKeyState(VK_SPACE))
{
break;
}
}
}
void ControlSnake() //用键盘控制游戏
{
if(GetAsyncKeyState(VK_UP) && Direction!=D)
{
Direction = U;
}
else if(GetAsyncKeyState(VK_DOWN) && Direction!=U)
{
Direction = D;
}
else if(GetAsyncKeyState(VK_LEFT) && Direction!=R)
{
Direction = L;
}
else if(GetAsyncKeyState(VK_RIGHT) && Direction!=L)
{
Direction = R;
}
else if(GetAsyncKeyState(VK_F1))
{
if(sleeptime != 500)
{
sleeptime = 500;
everyScore = 1;
Pos(COL_MAP+20, 2);
printf("%d", everyScore);
}
}
else if(GetAsyncKeyState(VK_F2))
{
if(sleeptime != 300)
{
sleeptime = 300;
everyScore = 2;
Pos(COL_MAP+20, 2);
printf("%d", everyScore);
}
}
else if(GetAsyncKeyState(VK_SPACE))
{
Pause();
}
else if(GetAsyncKeyState(VK_ESCAPE))
{
exit(0);
}
}
void StateGame() //判断游戏失败或成功
{
if(State == ERROR_SELF)
{
system("cls");
printf("很遗憾，蛇咬到自己，游戏失败！\n");
}
else if(State == ERROR_WALL)
{
system("cls");
printf("很遗憾，蛇碰到墙壁，游戏失败！\n");
}
else if(State == SUCCESS)
{
system("cls");
printf("恭喜您，已通关！！！\n");
}
}
void RunGame()
{
Direction = R;//蛇初始行走方向为右
State = NORMAL;//游戏初始为正常状态
while(1)
{
ControlSnake();
SnakeMove();
if(State != NORMAL)
{
StateGame();
break;
}
Sleep(sleeptime);
}
}
void EndGame() //释放链表并恢复默认值
{
pSnake cur = head;
while(cur)
{
pSnake del = cur;
cur = cur->next;
free(del);
del = NULL;
}
head = NULL;
if(Food != NULL)
{
free(Food);
Food = NULL;
}
Score = 0;
everyScore = 1;
sleeptime = 500;
}
3.Test.c
#include "Snake.h"
int main()
{
while(1)
{
StartGame();
RunGame();
EndGame();
}
system("pause");
return 0;
}
五、运行界面展示
1.欢迎界面
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