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Game Development Essentials #1 - Don’t use inheritance for your game objects
I recently released my first game, X Fleet, available now in Android Market. It’s a fast paced space shooter / rpg riddled with awesomeness and you should get it now. The reason you should avoid hierarchies/inheritance is your objects will be far too varied and complicated in form to be accurately represented as such. More on this below. The alternative is a component model. This is very basic. Instead of having everything inheriting (e.g. Object -> MovableObject -> Animat...
Game design,OOP,Inheritence,Game object 2012-02-07 06:26:40
Java Doesn't Need to Be So Bad
I do a lot of Java coding and I enjoy it. I admit that there is a lot of typing, often a lot of boilerplate and getting even simple tasks done can involve too much work. Most of the tools that try to fix these problems trade one moment saved for another lost. Maven's XML based configuration file is a good example: Thank you for making my project easier to manage and I won't forget that you made me edit XML to do so. These are the things that you live with, these are the things you trade for ...
Java,Coding,Enterprise application,Tedious 2011-12-09 07:50:20
It looks like TechCrunch blocks GoDaddy server access
Recently, I encountered an issue with an app I maintain—it suddenly stopped pulling RSS feeds from TechCrunch. At first, I suspected that the RSS feed URL might have changed. However, after further investigation, I discovered a different story. The URL itself was unchanged, but the results varied depending on where the request was coming from. To troubleshoot, I started by setting up a local web server and running a test with my script to see if it could still pull the RSS feed. The script...
TECH CRUNCH,GODADDY,AI,BLOCK ACCESS 2024-08-17 12:31:52
Service discovery with etcd
In previous post, we have talked about etcd and its usage. This post we will cover how to implement server discovery with etcd. Service discovery is to solve one of the most commonly seen scenarios in distributed system where how to find the corresponding target service to talk to. In short, it is to find some server which one can talk to based on some service name. A complete service discovery system include below three key functions: Service registration: A service must register itself to so...
ETCD,SERVICE DISCOVERY,DEMO,TUTORIAL 2021-03-08 05:36:29
Open source code libraries suffer from vulnerabilities
A study of how 31 popular open source code libraries were downloaded over the past 12 months found that more than a third of the 1,261 versions of these libraries had a known vulnerability and about a quarter of the downloads were tainted. The study was undertaken by Aspect Security, which evaluates software for vulnerabilities, with Sonatype, a firm that provides a central repository housing more than 300,000 libraries for downloading open source components and gets 4 billion requests pe...
Open source,Security,Vulnerability 2012-03-28 06:10:19
WireGuard VPN Troubleshooting
When you are working as a network/cluster admin for you team to config the WireGuard VPN for other members, you may meet some of the problems below and these are the solution you can try to fix them. ----------------------------------------------------------------------------------------------------------- Problem [1]: The WireGuard handshake request send from the client can be received from the server but the server's response was blocked at some where so the client can not receive serv...
WIREGUARD,VPN,TROUBLESHOOTING 2021-12-14 09:17:46
GCC is compiled with C++ compiler
On 15 Aug, 2012, GCC merged a patch--Merge from cxx-conversion branch . This means GCC will be compiled with C++ compiler in the future, it also means that GCC will be implemented using C++. You may have following two puzzles: Why does GCC turn to C++? Without C++ compiler, how can we compile C++ codes? Why using C++? In GNU's C++ Conversion, we can find this description in the background section: Whether we use C or C++, we need to try to ensure that interfaces are easy to understan...
Access control in Java -- doPrivileged
Previously we have introduced how Java performs permission check to protect resource access. What if sometimes we need to give some class the temporary access to some resource which it initially doesn't have? AccessController provides six doPrivileged methods to fulfill this requirement. These six methods have below signatures : static T doPrivileged(PrivilegedAction action)static T doPrivileged(PrivilegedAction action, AccessControlContext context)static T doPrivileged(PrivilegedExceptionA...
JAVA,SECURITY,DOPRIVILEGED 2016-03-08 05:46:42
Benefits and Drawback of a Layered Architecture
Most enterprises today are application centric. But the problem with the application is that their database schemas, user interfaces, programming interfaces and object models are tightly coupled and difficult to change. If you want to add a new field to a database table and you’re lucky, the change will reflect through the entire system. But often the change needs to be replicated manually across the entire system. And as applications are difficult to change, adding business rules or proce...
JAVA, PROGRAMMING,WEB DEVELOPMENT,ENTERPRISE APPLICATION 2017-05-04 08:19:34
The Book That Every Programmer Should Read
No, it’s not Knuth’s “The Art of Programmingâ€. I’m talking about quite an easy-to-read (compared to TAoP) book, which, in fact, does not require any engineering or mathematical background from the reader.I am talking about C. Petzold’s “CODEâ€. It is a truly remarkable book about how computers work. Let me explain why I think this book is so awesome.The book starts from the very beginning, from explaining what code is, bringi...
Programmer,Book,Must read,CODE,C. Petzold 2011-10-31 10:43:58
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