C# - MUnique OpenMU Project

C#

Blog posts with implementation details in C#

Optimized pathfinding

Optimized pathfinding

After some tests of the community, we found that many instances of monsters on a map will cause a lot of memory usage. As I found out, the root of the cause was how we do the pathfinding for the monsters. Because of that, I took this as a challenge

Demo Console Client for MU Online

Demo Console Client for MU Online

For a test of the new nuget packages of MUnique.OpenMU.Network.Packets I wrote a small demo client. You can find the source code here: https://github.com/sven-n/MuConsoleTestClient It encapsulates most of the packet creation and parsing for you, so you don't have to mess

Generating message structs by data

Generating message structs by data

In this post I want to explain how I'm planning to generate ref structs in OpenMU and how this fits into the big picture.

Handling packet structures in .NET - a new way?

Handling packet structures in .NET - a new way?

Parsing and serializing network packets in .NET in a safe, performant and elegant way can be quite tricky. C# ref structs might be the answer.

SimpleModulus revisited

Recently, I was working on getting game client version 0.75 to work with OpenMU. One big obstacle was the SimpleModulus encryption which was somehow different in the earlier versions of MU Online. You can find an analysis of it here. According to a change log in a leaked 0.

Loading complex data with PostgreSQL JSON functions

Loading complex data with PostgreSQL JSON functions

Problem With an extension of initialization data, where I added definitions of NPCs and Monsters and their spawn points to about 10 game maps, I noticed that the time to start the server went up dramatically - from ~13 seconds to over 1 minute. The reason was, that my strategy

MUnique OpenMU Network Analyzer

Hey people, today I release a little tool to analyze network traffic between server and client which use the mu protocol. The cool thing is, the packet structures are defined in xml files, so it can be extended like you wish. Changes on this xml files also work on-the-fly -

A closer look at the MU Online packet encryption

in the past days I wondered why some parts of the encryption and decryption keys for the network packet encryption (aka SimpleModulus) are actually the same. So I tried to dig a bit in the SimpleModulus algorithm and the usage of these keys. Lets see how this keys (e.g.

it compiles... ship it! :)

Yesterday, I finally managed to get the Travis CI build running. This was a bit tricky, because Travis CI runs on Linux with xbuild (not msbuild) and uses the mono compiler. Because of Linux, the file names are case-sensitive, which is different from Windows. I also think that calling msbuild.

Entity Framework Core

.Include(...) is not the right solution to load 1:n relationships

When I read about what people suggest to load 1:n relations, it makes me wonder if they know what they are doing. In Entity Framework Core, basically every LINQ expression translates into one SQL statement. When you do Include(...) on 1:n relationships (collection navigation properties), you are basically

Entity Framework Core

Workaround for missing n:m mapping feature in Entity Framework Core

A lot of guys are complaining on GitHub that implicit mapping for many-to-many relationships is missing for Entity Framework Core. I don't see this missing feature as too critical. With some clever patterns you can implement workarounds without affecting your business domain objects too much. I'll