MySQL - C/C++访问MySQL数据库(数据库编程实战-用户登录实现)
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#pragma once
#define SCREEN_WIDTH 800
#define SCREEN_HEIGHT 650
#define RATIO 50
//控制键 上、下、左、右 控制方向，'q' 退出
#define KEY_UP 'w' //char 'a'
#define KEY_LEFT 'a'
#define KEY_RIGHT 'd'
#define KEY_DOWN 's'
#define KEY_QUIT 'q'
#define LINE 9
#define COLUMN 12
#define START_X 100
#define START_Y 100
#define MAX_RETRY_TIMES 4
//#define PROPS enum _PROPS
typedef enum _PROPS PROPS;
typedef enum _DIRECTION DIRECTION;
typedef struct _POS POS;
#define isValid(pos) pos.x>=0 && pos.x=0 && pos.y
enum _PROPS {
WALL, //墙
FLOOR, //地板
BOX_DES, //箱子目的地
MAN, //小人
BOX, //箱子
HIT, //箱子命中目标
ALL
};
//游戏控制方向
enum _DIRECTION
{
UP,
DOWN,
LEFT,
RIGHT
};
struct _POS {
int x; //小人所在的二维数组的行
int y; //小人所在的二维数组的列
};
#include =0 && next_pos.y
if (isValid(next_pos) && map[next_pos.x][next_pos.y] == FLOOR) {//人的前方是地板
changeMap(&next_pos, MAN); //小人前进一格
changeMap(&man, FLOOR);
man = next_pos;
}
else if (isValid(next_next_pos) && map[next_pos.x][next_pos.y] == BOX) {//人的前方是箱子
//两种情况，箱子前面是地板或者是箱子目的地
if (map[next_next_pos.x][next_next_pos.y] == FLOOR) {
changeMap(&next_next_pos, BOX);
changeMap(&next_pos, MAN); //小人前进一格
changeMap(&man, FLOOR);
man = next_pos;
}
else if (map[next_next_pos.x][next_next_pos.y] == BOX_DES) {
changeMap(&next_next_pos, HIT);
changeMap(&next_pos, MAN); //小人前进一格
changeMap(&man, FLOOR);
man = next_pos;
}
}
}
bool login(userinfo& user)
{
int times = 0;
bool ret = false;
do {
cout << "请输入用户名: ";
cin >> user.username;
cout << "请输入密码: ";
cin >> user.passwd;
/* 返回 bool, 成功返回 true, 失败返回 false */
ret = fetch_user_info(user); /* 读取用户信息 */
times++;
if (times >= MAX_RETRY_TIMES)
{
break;
}
if (ret == false)
{
cout << "登录失败, 请重新输入!" << endl;
}
} while (!ret);
return ret;
}
int main(void) {
/* 用户身份验证 */
userinfo user;
if (login(user) == false)
{
cout << "登录失败, 请重新登录!!!" << endl;
::system("pause");
exit(-1);
}
else
{
cout << "登录成功, 请开始你的表演!!!" << endl;
::system("pause");
}
IMAGE bg_img;
//搭台唱戏
initgraph(SCREEN_WIDTH, SCREEN_HEIGHT);
loadimage(&bg_img, _T("blackground.bmp"), SCREEN_WIDTH, SCREEN_HEIGHT, true);
putimage(0, 0, &bg_img);
//加载道具图标
loadimage(&images[WALL], _T("wall_right.bmp"), RATIO, RATIO, true);
loadimage(&images[FLOOR], _T("floor.bmp"), RATIO, RATIO, true);
loadimage(&images[BOX_DES], _T("des.bmp"), RATIO, RATIO, true);
loadimage(&images[MAN], _T("man.bmp"), RATIO, RATIO, true);
loadimage(&images[BOX], _T("box.bmp"), RATIO, RATIO, true);
loadimage(&images[HIT], _T("box.bmp"), RATIO, RATIO, true);
for (int i = 0; i < LINE; i++) {
for (int j = 0; j < COLUMN; j++) {
if (map[i][j] == MAN) {
man.x = i;
man.y = j;
}
putimage(START_X + j * RATIO, START_Y + i * RATIO, &images[map[i][j]]);
}
}
//游戏环节
bool quit = false;
do {
if (_kbhit()) { //玩家按键
char ch = _getch();
if (ch == KEY_UP) {
gameControl(UP);
}
else if (ch == KEY_DOWN) {
gameControl(DOWN);
}
else if (ch == KEY_LEFT) {
gameControl(LEFT);
}
else if (ch == KEY_RIGHT) {
gameControl(RIGHT);
}
else if (ch == KEY_QUIT) {
quit = true;
}
if (isGameOver()) {
gameOverScene(&bg_img);
quit = true;
}
}
Sleep(100);
} while (quit == false); //!quit
system("pause");
//游戏结束，释放资源
closegraph();
return 0;
}
#pragma once
#include 
#include "database.h"
#include 结语:
时间: 2020-07-16