mmo | A text-based Python MMO | Game Engine library

This is a very large question. But I will give you the shortest answer. If you want to know more, you can read Multiplayer Game Programming book to get more details.

Most of MMO games are server-client games (Some games are peer-to-peer, but they are too minor percent). There are 3 types of server-client games:

• Authoritative server: The game server’s simulation of the game is considered to be correct. If the client ever finds itself in different state with the server, it should update its game state based on what the server says is the game state.
• Dedicated server: They only run the game state and communicate with all of the clients. The dedicated server process is completely separate from any client processes running the game. This means that the dedicated server typically is headless and does not actually display any graphics. Most of games is run on dedicated server, this type also is sub-classification of Authoritative server.
• Listen server: One of the players can use their machine as both a server and a client. Game publisher doesn't need to rent servers in a cloud provider. One require is that a user's machine running as a listen server must be powerful enough and have a fast enough connection to handle this increased load.

If you want explore more about some famous or AAA game server, checkout some open-source server like:

• RakNet is a part of Oculus then Facebook now, but they stop development from 2015. One of famous game use RakNet is Minecraft, the server is forked then written Java (instead of C++ as original).
• Agones is a collaboration project of Google and Ubisoft for Google Cloud Computing and Assassin's Creed Odyssey game. Their demo of server and client is here.

Do you have a on_message event running? if so, that could make the command not work.

There are many mistakes in your code, and any of them could cause unexpected errors. Let's walk through them all and afterwards look at how you could debug such an error.

1. Let's make sure every statement is terminated by a semicolon ;. Although this is unlikely to have been the cause of your issue, it's still better practice.

You can use regexp_replace() to get the upper case letters at the end of the string:

I need to access each element, then use its name and value to populate the graph

You can do that in many ways, such as:

Thats because the is_category and is_category2 are returning 0. You have probably an if statement on your php like if $_POST[is_category] but you also need to do the same in case there is no category selected. Please share the full php to help you out

on your click function replace load_data(start_date, end_date); with load_data('','',start_date, end_date);

The Simplest Way to solve this is to set the td to 50%

Try using this: