C++之贪吃蛇
- #include<iostream>
- #include<stdio.h>
- #include<stdlib.h>
- #include<time.h>
- #include<conio.h>
- #include<windows.h>
- using namespace std;
-
- typedef struct{ int x, y; }Point;
-
- char map[22][22]; //定义一个22*22的地图(含边界)
- Point snake[400], food, Next; //定义蛇、食物、下一步蛇头的位置
- int head, tail; //用于储存蛇头和蛇尾的下标
- int grade, length, autotime; //游戏等级、蛇长、自动前进所需时间
- char direction; //前进方向
-
- //定位光标
- void gotoxy(int x, int y)
- {
- HANDLE hConsoleOutput;
- COORD dwCursorPosition;
- dwCursorPosition.X = x;
- dwCursorPosition.Y = y;
- hConsoleOutput = GetStdHandle(STD_OUTPUT_HANDLE);
- SetConsoleCursorPosition(hConsoleOutput, dwCursorPosition);
- }
-
- //用inline定义内联函数节省程序运行时的调用开销
- //刷新地图
- inline void Update(char map[][22], int grade, int length, int autotime)
- {
- //system("cls"); //清屏
- gotoxy(0, 0);
- int i, j;
- printf("\n");
- for (i = 0; i < 22; i++)
- {
- printf("\t");
- for (j = 0; j < 22; j++)
- printf("%c ", map[i][j]);
- if (i == 0)
- printf("\t等级为:%d", grade);
- if (i == 2)
- printf("\t长度为:%d", length);
- if (i == 6)
- printf("\t自动前进时间");
- if (i == 8)
- printf("\t间隔为:%d ms", autotime);
- printf("\n");
- }
- }
-
- //欢迎界面
- inline void hello()
- {
- puts("\n\n\n\t\t\t贪吃蛇游戏即将开始!"); //准备开始
- double start;
- for (int i = 3; i >= 0; i--)
- {
- start = (double)clock() / CLOCKS_PER_SEC; //得到程序目前为止运行的时间
- while ((double)clock() / CLOCKS_PER_SEC - start <= 1); //经过1秒之后
- if (i > 0)
- {
- system("cls"); //清屏
- printf("\n\n\n\t\t\t进入倒计时:%d\n", i); //倒计时
- }
- else
- Update(map, grade, length, autotime); //刷新地图
- }
- }
-
- //随机生成食物位置
- inline void f()
- {
- srand(int(time(0))); //调用种子函数
- do{
- food.x = rand() % 20 + 1;
- food.y = rand() % 20 + 1;
- } while (map[food.x][food.y] != ' ');
- map[food.x][food.y] = '!'; //食物为“!”
- }
-
- //初始化
- inline void init()
- {
- int i, j;
- for (i = 1; i <= 20; i++)
- for (j = 1; j <= 20; j++)
- map[i][j] = ' ';
- for (i = 0; i <= 21; i++)
- map[0][i] = map[21][i] = map[i][0] = map[i][21] = '*'; //边界
- map[1][1] = map[1][2] = 'O'; //蛇身(含蛇尾)
- map[1][3] = '@'; //蛇头
- head = 2; tail = 0; //开始时头和尾的下标
- snake[head].x = 1; snake[head].y = 3; //开始时蛇头在地图上的下标
- snake[tail].x = 1; snake[tail].y = 1; //开始时蛇尾在地图上的下标
- snake[1].x = 1; snake[1].y = 2; //开始时蛇身在地图上的下标
- f(); //随机生成食物位置
- grade = 1; length = 3; autotime = 500; //开始的等级、长度、自动前进时间
- direction = 77; //初始的运动方向向右
- }
-
- //预前进
- inline int GO()
- {
- bool timeover = true;
- double start = (double)clock() / CLOCKS_PER_SEC; //得到程序目前为止运行的时间
-
- L:
- //自动经过1秒或者等待1秒内的键盘输入
- while ((timeover = ((double)clock() / CLOCKS_PER_SEC - start <= autotime / 1000.0)) && !_kbhit());
- //键盘输入
- if (timeover)
- {
- //_getch();
- char d = _getch(); //获取方向
- if (d != 72 && d != 80 && d != 75 && d != 77 || direction == 72 && d == 80 || direction == 80 && d == 72 || direction == 75 && d == 77 || direction == 77 && d == 75)
- goto L;
- else
- direction = d;
- }
- switch (direction)
- {
- case 72:
- Next.x = snake[head].x - 1; Next.y = snake[head].y; //向上
- break;
- case 80:
- Next.x = snake[head].x + 1; Next.y = snake[head].y; //向下
- break;
- case 75:
- Next.x = snake[head].x; Next.y = snake[head].y - 1; //向左
- break;
- case 77:
- Next.x = snake[head].x; Next.y = snake[head].y + 1; //向右
- break;
- default:
- puts("\tGame over!"); //按下非方向键游戏失败
- return 0;
- }
- if (Next.x == 0 || Next.x == 21 || Next.y == 0 || Next.y == 21) //撞到边界
- {
- puts("\tGame over!");
- return 0;
- }
- if (map[Next.x][Next.y] != ' '&&!(Next.x == food.x&&Next.y == food.y)) //吃到自己
- {
- puts("\tGame over!");
- return 0;
- }
- if (length == 400) //最长蛇长
- {
- puts("\tGood game!");
- return 0;
- }
- return 1;
- }
-
- //吃到食物
- inline void EAT()
- {
- length++; //长度增加1
- int _grade = length / 10 + 1; //计算等级
- if (_grade != grade)
- {
- grade = _grade;
- if (autotime >= 100)
- autotime = 550 - grade * 50; //增加一级自动时间减短50毫秒
- }
- map[Next.x][Next.y] = '@'; //蛇头位置变化
- map[snake[head].x][snake[head].y] = 'O'; //原蛇头位置变化为蛇身
- head = (head + 1) % 400; //蛇头下标加1
- snake[head].x = Next.x; snake[head].y = Next.y; //蛇头下标变化
- f(); //随机生成食物位置
- Update(map, grade, length, autotime); //刷新地图
- }
-
- //没吃到食物
- inline void FAILURE()
- {
- map[snake[tail].x][snake[tail].y] = ' '; //蛇尾原来的位置变成“ ”
- tail = (tail + 1) % 400; //蛇尾下标加1
- map[Next.x][Next.y] = '@'; //蛇头位置变化
- map[snake[head].x][snake[head].y] = 'O'; //原蛇头位置变化为蛇身
- head = (head + 1) % 400; //蛇头下标加1
- snake[head].x = Next.x; //蛇头下标变化
- snake[head].y = Next.y;
- Update(map, grade, length, autotime); //刷新地图
- }
-
- //main函数
- int main()
- {
- system("color F0");
- init(); //初始化
- hello(); //欢迎界面
- while (1)
- {
- if (GO()) //预前进
- {
- if (Next.x == food.x&&Next.y == food.y)
- EAT(); //吃到食物
- else
- FAILURE(); //没吃到食物
- }
- else
- return 0; //失败或者胜利,游戏结束
- }
- return 0;
- }
- //
想要换背景颜色和字符颜色吗?
想让按下非方向键,蛇不会死掉?
想要解决屏幕一闪一闪的问题吗?
转到下一篇C++控制台应用程序之贪吃蛇(改进版)