[Emulator/C++] Emulating Darkorbit Classic [WIP]

[Exenu]

Hi everyone,

I've been developing an emulator the classic version of DarkOrbit (before the new client) for around a month.

I won't bore you with the details on why I decided to emulate the classic version; so I will skip straight to the technical details of the emulator.

Note; Thread is still in progress and emulator is not released yet till main core gameplay is coded.

Source code:

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Technical Details

The Daemon Emulator is coded in C++17. Using the following libraries:

• MYSQL C v5.6
• Boost v6.6
• OpenSSL v1.1
• SFMT v1 (Customised)

Networking
- Using Boost ASIO with the capability of asynchronous operations.

Database
- Using MYSQL C - Using own wrapper class which supports synchronous/asynchronous queries.

Logger
- Using own Logger class which supports the standard logging configurations: INFO, WARNING, ERROR, VERBOSE, ASSERT.
- Logs to terminal console or/and file.
- Thread Safe.

Configuration File
- Using own configuration.
- Thread Safe

Thread Pooling
- Using own Thread Pooling class.
- Optimises existing running threads and their tasks; pushes/pops tasks to other threads depending on performance on said thread.
- Thread Pooling launches x amount of threads as default depending on your machine specifications (can be changed through configuration).
- Threads are split into types:
*Inclusive: Runs multiple tasks.
*Exclusive: Only runs one task.
*Critical: Launch new task on new thread ignoring hardware concurrency.

Design Flow

• Maps:- Maps are separated into zones handled by a zone manager; zones can be multi-threaded for example; running 3 threads will designate 9 maps per zone - You can set this in the configuration option. Also maps are split into grids, each grid is independent and is dynamic (does not update if no there is no activity).
• Packets:- Packets are split into three different stages: Player Thread, World Thread and Map Thread. This ensures thread safety, and off-loading the balance between the threads; for example a non-handled packet would be processed on player thread (first thread which comes in contact with the packet).
• TOOD; More.

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Progress

Strike = Completed.

Login into world
Movement System
Attacking System
Kill Credit
Surrounding Objects System
Interactive Events (Stations/Portals)
NPCS spawned in world
Cargo
Drones
Galaxy Gates
Team Death Match
SpaceBall

and more which will be added soon.

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ScreenShots





Any questions do not hesitate to ask!

[=INFINITY=]

Hey nice to see someone work on old client server i have one too in c++ not mine mybe u want work together i did old site 2009 i think u will like it xd

[notEmpty]

[MuffinMario]

Nice work! Though developing a server in <current year> in C++ is making things pretty much more difficult than they should be.
Can I ask what you need OpenSSL for? This version does not use any encryption to transfer packets, etc..

If you want to compare your work to mind, feel free to check which I've been spending some time on for 2 years now

[gyula359]

Originally Posted by MuffinMario

Nice work! Though developing a server in <current year> in C++ is making things pretty much more difficult than they should be.
Can I ask what you need OpenSSL for? This version does not use any encryption to transfer packets, etc..

If you want to compare your work to mind, feel free to check which I've been spending some time on for 2 years now

is requesting your username and password. The site says: “Your authorization required message.”
username/password???????????

[Exenu]

Originally Posted by MuffinMario

Nice work! Though developing a server in <current year> in C++ is making things pretty much more difficult than they should be.
Can I ask what you need OpenSSL for? This version does not use any encryption to transfer packets, etc..

If you want to compare your work to mind, feel free to check which I've been spending some time on for 2 years now

I will take a look at your source, thank you for sharing!

I work with C++ on a daily-basis; it feels more natural for me to code in other than C# etc...

OpenSSL is apart of my server-side core by default - I also emulate other games using the same core.

[gyula359]

Originally Posted by Exenu

I will take a look at your source, thank you for sharing!

I work with C++ on a daily-basis; it feels more natural for me to code in other than C# etc...

OpenSSL is apart of my server-side core by default - I also emulate other games using the same core.

A(z) felhasználónevet és jelszót kér. A webhely üzenete: „Your authorization required message.”
You are prompted to for username and password. This site's message is: "Your authorization required message."
what is your username and password?

[Requi]

Isn't this a fat memory leak or am I missing something? Please do everyone a favor and use smart pointers.


Why not just use an std::mutex + std::unique_lock?

[Exenu]

Originally Posted by Requi

Isn't this a fat memory leak or am I missing something? Please do everyone a favor and use smart pointers.


Why not just use an std::mutex + std::unique_lock?

Hi, the pointer is deleted at:


There's no reason to use smart pointers in this case, as I know where I want it to be deleted. Using smart pointers would be using extra overhead for nothing, and performance is important when the function is the main entry point.

EDIT; I've misread your question. Yes that is a memory leak. Feel free to make a pull request.

The lockable class is preference, although I do not use it in most cases.

[Requi]

Originally Posted by Exenu

Hi, the pointer is deleted at:


There's no reason to use smart pointers in this case, as I know where I want it to be deleted. Using smart pointers would be using extra overhead for nothing, and performance is important when the function is the main entry point.

EDIT; I've misread your question. Yes that is a memory leak. Feel free to make a pull request.

The lockable class is preference, although I do not use it in most cases.

Using an std::unique_ptr and moving it through the functions would be basically no overhead or am I wrong?

[Exenu]

Originally Posted by Requi

Using an std::unique_ptr and moving it through the functions would be basically no overhead or am I wrong?

There is no overhead when you're moving the ptr. How-ever there is overhead at allocation. In my opinion, if you're using unique_ptr and then just moving it across function to function - you're using it wrong.

I only use smart pointers when I don't care when the pointer will be deleted.

I think it's better to use malloc when it comes down to packet handling, as performance is crucial to ensure smooth gameplay.

[ThisSoniyo]

If there were a few developers who would be willing to code everything necessary to get this into a working server to be released(Good example is linkpads old server he used to have) then i would be willing to put forth the money and hosting to actually get it up. I am a diehard fan of this classic version.

[=INFINITY=]

Dont forget contact me when u need 2009 cms header is no longer flash one xd:P

[Requi]

Originally Posted by ThisSoniyo

If there were a few developers who would be willing to code everything necessary to get this into a working server to be released(Good example is linkpads old server he used to have) then i would be willing to put forth the money and hosting to actually get it up. I am a diehard fan of this classic version.

Get me some motivation and I'll put up a server. You wouldn't even need to pay, because I already have multiple servers.

[Exenu]

Originally Posted by ThisSoniyo

If there were a few developers who would be willing to code everything necessary to get this into a working server to be released(Good example is linkpads old server he used to have) then i would be willing to put forth the money and hosting to actually get it up. I am a diehard fan of this classic version.

It would help me a lot if we can get someone to build a CMS for the server. There are a few parts which prevents me from implementing without a cms.