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forgottenserver/src/protocollogin.cpp at master · otland/forgottenserver

A free and open-source MMORPG server emulator written in C++ - otland/forgottenserver
github.com github.com

This isn't a complete tutorial but should provide you with the correct steps.

1. You should change the line output->addString(fmt::format("{:d}\n{:s}", g_game.getMotdNum(), motd)); to something that is more dynamic. Since it just fetches the MotdNum and motd message and print them out.
2. You'd probably need to use <chrono> to find the time difference or any other C++ library that you see fits.
3. You'll also need to convert a date(DD-MM-YYYY-HH:MM) into a tm struct then feed it into system_clock::from_time_t - C++ Reference (https://www.cplusplus.com/reference/chrono/system_clock/from_time_t/)
4. Find the difference between the current time and your reference using How to get current time and date in C++? (https://stackoverflow.com/questions/997946/how-to-get-current-time-and-date-in-c#:~:text=std%3A%3Achrono%3A%3Aduration%3Cdouble%3E%20elapsed_seconds%20%3D%20end%2Dstart%3B)
5. This will be in seconds, Convert it into days by dividing it by 86400
6. Take the seconds mod 86400 to find the remainder hours
7. Convert it into hours by dividing by 3600.
8. Take the result mod 3600 to find the resulting minutes.
9. Convert it into minutes then dump all of that as a string in your format.

struct tm - C++ Reference

www.cplusplus.com www.cplusplus.com

Best of luck :D
 
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