update_date_time (日期时间设置函数)


/*
*        函数说明： 更新游戏中的日期信息
*        参数描述： void
*         返回值： void
*        备注说明： g_game_time, g_game_day, g_game_month, g_game_year 为全局变量
* 如果是2月先判断是不是润年，是则29天，否则28天；
*                             如果是1,3,5,7,8,10,12 则是31天，如果是4,6,9,11则是30天；
*         作者： nothing
*
*/
void update_date_time( void )
{
    // 游戏中 100ms 刷新一次， 即游戏刷新一次的时间大概为： 0.1 秒

    if (g_game_time % 100 == 0)
    {
            g_game_day += 1; //假设：现实中10秒为游戏时间1天

            
            switch (g_game_month)
            {
             case 1:
             case 3:
             case 5:
             case 7:
             case 8:
             case 10:
             case 12:
             {
                        if (g_game_day > 31)
                        {
                                g_game_day = 1;
                                g_game_month++; // 过了一个月

                        }
             }
                 break;
             case 2: // 第二月需要特殊处理

             {
                 // 闰年的判断

                 if ( (g_game_year / 4 == 0) && (g_game_year / 100 != 0) || (g_game_year / 400 == 0) )
                 {
                         if (g_game_day > 28)
                         {
                             g_game_day = 1;
                             g_game_month++;
                         }
                 }
                 else
                     if (g_game_day > 29)
                     {
                         g_game_day = 1;
                         g_game_month++;
                     }
             }
                    break;
        
             case 4:
             case 6:
             case 9:
             case 11:
                 if (g_game_day == 31)
                 {
                     g_game_day = 1;
                     g_game_month++;
                 }
                 break;
            }
            
            if (g_game_month > 12 )
            {
                g_game_year += 1;
                g_game_month = 1;
            }
            
            save_data_time();
    }
            
    return ;
}