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  • Character creation using spritesheets

    - by Patrick Developer
    I am currently creating a 2D fighting game and have implemented a system where upon starting a new game, the player is presented with the option to create a custom character. I have a set of string arrays set with values that correspond to hair, headgear, chest, lower body and shoes. When done selecting a variety of items from the lists, a code is generated based off the index of each item (i.e 01123), which is then used to assign the correct Spritesheet to the player character. This has already presented a lot of work as I have had to create quite a few spreadsheets based of possible combinations, but I am now looking at a massive amount of work to implement each variation. I have started to look into setting layers for each item to reduce workload, but I am also looking at having different stances for the character - Depending on the currently equipped weapon - so this may present a lot of work either way. My question is, do I have any alternatives or am I stuck creating masses of Spritesheets to cover all combinations? As a side note, how much impact will assigning layered items have on overall performance?

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  • Batch Convert .mkv to .mp4

    - by IamHere
    I want to batch convert all .mkv files in a folder into .mp4 with VLC. It should use the original video-/audio stream and if possible the .ass subtitle of the .mkv. It's not really a conversion, it's more like changing the container – my player can't read the MKV videos. If I do this conversion by hand (manually) it works, but I have a lot of MKV files to convert, so it would take a lot of time. I have searched the internet for a batch file to do this and I found a few. I tried to modify them to my wish, but all attempts I tried just created a .mp4 file that doesn't contain the audio stream and the video stream also cannot be rendered by all my media players on the PC. So could someone tell me how the batch has to look like, so it works with the original video and audio stream (and maybe .ass subtitles)?

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  • How common is prototyping as the first stage of development?

    - by EpsilonVector
    I've been taking some software design courses in the past few semesters, and while I see the benefit in a lot of the formalism, I still feel like it doesn't tell me anything about the program itself. You can't tell how the program is going to operate from the Use Case spec, even though it discusses what the program can do, and you can't tell anything about the user experience from the requirements document, even though it can include QA requirements. ...sequence diagrams are as good a description of how the software works as the call stack, in other words- very limited, highly partial view of the overall system, and a class diagram is great for describing how the system is built, but is utterly useless in helping you figure out what the software needs to be. Where in all this formalism is the bottom line- how the program looks, operates, and what experience it gives? Doesn't it make more sense to design off of that? Isn't it better to figure out how the program should work via a prototype and strive to implement it for real? I know that I'm probably suffering from being taught engineering by theoreticians, but I got to ask, do they do this in the industry? How do people figure out what the program actually is, not what it should conform to? Do people prototype a lot? ...or do they mostly use the formal tools like UML and I just didn't get the hang of using them yet?

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  • Python in Finance by Yuxing Yan, Packt Publishing Book Review

    - by Compudicted
    Originally posted on: http://geekswithblogs.net/Compudicted/archive/2014/06/04/python-in-finance-by-yuxing-yan-packt-publishing-book-review.aspx I picked Python in Finance from Packt Publishing to review expecting to bore myself with complex algorithms and senseless formulas while seeing little actual Python in action, indeed at 400 pages plus it may seem so. But, it turned out to be quite the opposite. I learned a lot about practical implementations of various Python modules as SciPy, NumPy and several more, I think they empower a developer a lot. No wonder Python is on the track to become a de-facto scientist language of choice! But I am not going to compromise the truth, the book does discuss numerous financial terms, many of them, and this is where the enormous power of this book is coming from: it is like standing on the shoulders of a giant. Python is that giant - flexible and powerful, yet very approachable. The TOC is very detailed thanks to Packt, any one can see what financial algorithms are covered, I am only going to name a few which I had most fun with (though all of them are covered in enough details): Fama*, Fat Tail, ARCH, Monte-Carlo and of course the volatility smile! I am under an impression this book is best suited for students in Finance, especially those who are about to join the workforce, but I suspect the material in this book is very well suited for mature Financists, an investor who has some programming skills and wants to benefit from it, or even a programmer, or a mathematician who already knows Python or any other language, but wants to have fun in Quantitative Finance and earn a few buck! Pure fun, real results, tons of practical insight from reading data from a file to downloading trade data from Yahoo! Lastly, I need to complement Yuxing – he is a talented teacher, this book could not be what it is otherwise. It is a 5 out of 5 product. Disclaimer: I received a  free copy of this book for review purposes from the publisher.

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  • Mapping XFCE4/xRDP sessions to users

    - by garrilla
    I have Ubuntu 13.10 with Xubuntu Desktop - XFCE4. I'm trying to use XDRP to allow MS Windows users to login to the machine with their own user. I've been a lot around the houses with this! I've find two half-way solutions, but can't get them to work as I'd like... 1) in /etc/xrdp/xrdp.ini I set the port to -1 [xrdp1] name=sesman-Xvnc lib=libvnc.so username=ask password=ask ip=127.0.0.1 port=-1 each time any user logs on they get a new session - they can never go back to their original session 2) in /etc/xrdp/xrdp.ini I set the port to 5912 (e.g) [xrdp1] name=sesman-Xvnc lib=libvnc.so username=ask password=ask ip=127.0.0.1 port=5912 each time any user logs on they always log on to the same session irrespective of their logon details ??) I found a mid-way solution, to create a lot of sessions by adding adding additional options in the xrdp.ini e.g. [xrdp8] name=Bob's Logon lib=libvnc.so username=ask password=ask ip=127.0.0.1 port=5913 [xrdp9] name=Jill's Logon lib=libvnc.so username=ask password=ask ip=127.0.0.1 port=5914 and so on, but he problem with this is that Jill can still log into Bob's remote session ??? Is it possible to to do what I'm trying to do? Maybe I have to use different tools?

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  • Why is it that software is still easily pirated today?

    - by mohabitar
    I've always been curious about this. Now I wouldn't call myself a programmer yet, but I'm learning, so maybe the answer to this is obvious. It just seems a little hard to believe that with all of our technological advances and the billions of dollars spent on engineering the most unbelievable and mind-blowing software, we still have no other means of protecting against piracy then a "serial number/activation key". I'm sure a ton of money, maybe even billions, went into creating Windows 7 or Office and even Snow Leopard, yet I can get it for free in less than 20 minutes. Same for all of Adobe's products, which are probably the easiest. I guess my question is: can there exist a fool proof and hack proof method of protecting your software against piracy? If not realistically, how about theoretically possible? Or no matter what mechanisms these companies deploy, hackers can always find a way around it? EDIT: So apparently, the answer is no. There's pretty much no way. And so I'm sure these big companies have realized this as well. Should they adopt another sales model rather than charging a crapload for their software (I know its justified and they put a lot of hard work into their software, but its still a lot of money). Are there any alternative solutions that will benefit both the company and the user (i.e. if you purchase our product, we'll apply $X dollars to your account that will apply to future purchases from our company)?

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  • Creating sitemap for Googlebot - how to mark dynamic content / dynamic subpages?

    - by ojek
    I have a website that is an Internet forum. This forum has many categories, and a single category page that contains a lot of subpages with listed threads. This Internet forum is brand new, and about a week ago I filled it with a few hundred thousand threads. I then looked at my Google Webmasters Tools page to see any changes in indexing, but the index went up from 300 to about 1200, so that means it did not index my added threads (although it added something). The following is what my sitemap.xml contains, which I uploaded to their website. Of course there is a lot more code, this is just a snippet for a single category. In my real sitemap file I have all the categories listed as below: <url> <loc>http://mysite.com/Forums/Physics</loc> <changefreq>hourly</changefreq> </url> Now, I would expect Googlebot to go into mysite.com/Forums/Physics, and crawl through all the subpages with thread links, and then crawl inside of each thread and index its content. How can I achieve this? Also if this is unclear, I will add a real link to my website.

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  • Wifi not working on Acer Aspire One D270

    - by Dani
    brand new baby linux user here, never used Ubuntu or any other linux OS before, so be gentle and use short words! I installed Ubuntu 12.04 on my new Acer Aspire One D270-F61C/KF netbook (it's a Japanese computer which had Japanese windows preinstalled, and I decided to take the plunge and try Ubuntu because English Windows costs the earth and stars). Wifi isn't working; I enter my wireless password, it tries to connect for a while, then asks for my password again. And KEEPS ASKING, every few minutes. Wired connection works fine. Wireless card is a Broadcom BCM4313; I have the "additional drivers" checked and installed (I tried unchecking and then reinstalling them in case that would help, no joy, and now my home wifi connection isn't showing up in the list of available connections, argh). I've done a lot of googling and I gather there's a lot of issues with Broadcom cards, but some of the answers are for earlier ubuntu builds and many of them are a bit confusing for a new user. I gather I need to try installing some new drivers other than the proprietary ones provided, but I'm having trouble figuring out how that's done. Anyone got some simple, step by step instructions for me? Please bear in mind, TOTAL N00B. (EDIT): OKAY, got it fixed finally; after suggestions on the Ubuntu forums and messing around with drivers, what finally worked was installing Wicd. Not... using Wicd, for some reason, just installing it fixed it. ...I CHOOSE NOT TO QUESTION IT.

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  • OOP oriented PHP app source code samples and advice

    - by abel
    The day I have been dreading has arrived. I never felt OOP or good software design was important(I knew they were important, but I thought I could manage without them.). However having read otherwise almost everywhere on the interwebs, I started dreading the day when my client would ask me for new features in an existing app. The day has come and the pain is unbearable! I have never coded my PHP websites "properly"(PHP is my primary language and the bulk of my work. I am learning Python (using web2py)) I take care that the website doesn't fall apart in a daily use scenario. I code pages like I was creating a list of static html files with bits of "magic code" in each of them(this bugs me a lot). How do I make the whole app more or less a single object? For eg. How do I design the object model for an invoicing app? I use a lot of functions for doing any particular thing in the same fashion throughout the app(for eg. validation, generating ids, calculating taxes etc.). I know the basics of OOP in general. Can anyone point me to source code samples of functional apps written in php? Or can someone provide pointers so I can recode my existing apps in a more modular way.

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  • Commerce Server 2009 with SharePoint 2010 experiences

    - by rsteckly
    Hi, I'm trying to decide to between using MojoPortal for my organizations CMS or Commerce Server 2009 with SharePoint 2010. We already have SharePoint 2010 for our intranet. In that thinking, perhaps it would make sense to deploy the same technology? We do not have a lot of traffic but do need basic e-commerce functionality. I haven't really found a lot of documentation for Commerce Server 2009. It would have to share the same server with SharePoint 2010. I'm not worried about that because of the low traffic. I'm worried about how difficult it is to install. Is it a nightmare product to install or is it pretty straightforward? Is it unrealistic for it to share a server with SharePoint 2010, even in relatively low traffic? Any experiences with administering MojoPortal? Thanks!

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  • Going from dev to sysadmin advice [on hold]

    - by dotnetdev
    I've seen the threads on here about transitions to/from sysadmin. My story is I am a dev (technology is irrelevant), but in learning that technology it required a lot of server infrastructure. In the last few years, I thus had to setup a lot of infrastructure (AD, DNS, SQL etc) to learn said technology. I've noticed that I've enjoyed doing sysadmin and got quite good at it, and find it even engrossing (e.g. I am amazed by how decievingly complicated AD is, under the hood). I'm now thinking of moving into IT infrastructure after about 4 years in various dev (.NET) roles. Any advice? My concern is that I don't have any experience with hardware load balancers and firewalls like F5 etc, which some jobs require. How could I compensate for that? Also, I'm rubbish with my hands, would this be a factor? (i.e. maintaining physical kit)? Thanks

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  • Ghosting context menu clicks in WinXP

    - by Swish
    Let me preface by saying I have a lot of windows open most of the time, although not resource intensive ones, just browsers, ssh sessions, a music player, FTP client, Notepad++, IM clkients, etc. Anyway, I get a lot of weird visual "ghosting" type effects. For example when right-clicking and then selecting an option from a context menu the selected item will remain in view until I right click somewhere on the desktop. Same thing happens when selecting items from the File, Edit, etc. menu in various programs. I'm assuming this is just a result of a less than high quality video card (NVIDIA GeForce FX 5200), all the other hardware in the machine is newer higher quality, that specific video card was added after the fact for multiple monitors. I have looked all over the web for solutions and have increased the number of GDI handles for Windows, reduced the hardware accelaration on the card, etc. Any suggestions other than replace the card?

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  • StarterSTS 1.5

    - by Your DisplayName here!
    I have the 1.5 version of StarterSTS sitting here for quite some time now. But I was always reluctant to release it. Some of the reasons are: too many new features for a single (small) version change. to many features that are optional, like bridged authentication and thus make the code very complex. the way I implemented Azure integration adds a dependency on the Azure SDK, even for “on-premise” installations. I don’t like that. the fact I am using some WebForms bits and some WCF bits, the URL structure got messy. WebForms also don’t help a lot in testability All of the above reasons together plus the fact that I am the only architect, developer and tester on this project made me come to the conclusion that I will cancel this release. But wait… StarterSTS 1.5 is fully functional. We use both the on-premise and Azure versions internally “in production”. Cancelling means I will release the latest source code on Codeplex – but will not mark it as a “recommended release”. I also won’t produce updated screen casts and docs. Bu the setup is very similar to earlier versions. Feel free to use and customize 1.5 and give me feedback. On the good news front, I am working on a new version – welcome thinktecture IdentityServer. This version is based on MVC3 and the routing architecture, removed a lot of the clutter, has a SQL CE4 based configuration system, is more extensible – and in overall just cleaner. I will be able to upload CTPs very soon.

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  • Hosted application, DNS server setup?

    - by Ward Loockx
    Currently I'm allowing users to have an hosted application. Currently they have to point A-records to our servers (sometimes this is to hard or get's messy). I've seen other players using 2 dns servers, so that the user only needs to change these. I'm willing to implement this, but a lot of questions come up. What should I use for this? Can I use bind? The records need to be generated from a mysql database What type of servers do I need? Is a DNS server taking a lot of load? Currently having around 80K daily visitors. Thanks!

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  • Is Linq having a mind-numbing effect on .NET programmers?

    - by Aaronaught
    A lot of us started seeing this phenomenon with jQuery about a year ago when people started asking how to do absolutely insane things like retrieve the query string with jQuery. The difference between the library (jQuery) and the language (JavaScript) is apparently lost on many programmers, and results in a lot of inappropriate, convoluted code being written where it is not necessary. Maybe it's just my imagination, but I swear I'm starting to see an uptick in the number of questions where people are asking to do similarly insane things with Linq, like find ranges in a sorted array. I can't get over how thoroughly inappropriate the Linq extensions are for solving that problem, but more importantly the fact that the author just assumed that the ideal solution would involve Linq without actually thinking about it (as far as I can tell). It seems that we are repeating history, breeding a new generation of .NET programmers who can't tell the difference between the language (C#/VB.NET) and the library (Linq). What is responsible for this phenomenon? Is it just hype? Magpie tendencies? Has Linq picked up a reputation as a form of magic, where instead of actually writing code you just have to utter the right incantation? I'm hardly satisfied with those explanations but I can't really think of anything else. More importantly, is it really a problem, and if so, what's the best way to help enlighten these people?

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  • How to choose size for a cloud server (rackspace)

    - by Emil
    We're going to test the rackspace cloud next week to see how it's working with our web app. It's a LAMP environment with a lot of MySQL databases. How do I choose the "right" server size? On Rackspace I can choose slices with the memory of 256, 512, 1024, 2048, 4096 etc. Right now we don't have a lot of traffic (approx. 1000 visitors/day) but I thought the whole "cloud" idea was to not be limited and auto scale. Update: What I'm looking for is now a specification of what I need. I know it's too complex. I'm looking for examples, case studies etc. It would be interesting to hear something like "Yes we're serving 10 000 daily requests without spikes on a LAMP stack with only one slice on with 2 GB RAM".

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  • Static IP configuration causing apt-get errors

    - by JPbuntu
    I am getting errors when running apt-get update or when installing new packages. Although this only happens when the server configured for a static IP address. Changing the configuration back to DHCP and restarting networking fixes the problem, although I want a static IP. Once it is working I can change back to my static IP address and restart networking. Although this only works until I restart the server (restarting the router is ok), and then I start getting the same errors and have to switch back to DHCP. Any ideas on what could be causing this or tips on troubleshooting it? Thanks in advance. here is my static IP configuration: auto eth0 iface eth0 inet static address 192.168.2.2 netmask 255.255.255.0 gateway 192.168.2.1 The apt-get update errors go something like this: A few of these Ign http://us.archive.ubuntu.com precise-backports InRelease then a lot of these Err http://security.ubuntu.com precise-security Release.gpg Something wicked happened resolving 'security.ubuntu.com:http' (-5 - No address associated with hostname) and a lot of these W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/precise-backports/universe/i18n/Translation-en Something wicked happened resolving 'us.archive.ubuntu.com:http' (-5 - No address associated with hostname)

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  • CPU load, USB connection vs. NIC

    - by T.J. Crowder
    In general, and understanding the answer may vary by manufacturer and model (and driver, and...), in consumer-grade workstations with integrated NICs, does the NIC rely on the CPU for a lot of help (as is typically the case with a USB controller, for instance), or is it fairly intelligent and capable on its own (like, say, the typical Firewire controller)? Or is the question too general to answer? (If it matters, you can assume Linux.) Background: I'm looking at connecting a device (digital television capture) that will be delivering ~20-50 Mbit/sec of data to a somewhat under-powered workstation. I can get a USB 2 High-speed device, or a network-attached device, and am interested in avoiding impacting the CPU where possible. Obviously, if it's a 100Mbit NIC, that's roughly half its theoretical inbound bandwidth, whereas it's only roughly a tenth of the 480 Mbit/second the USB 2 "High Speed" interface. But if the latter requires a lot of CPU support and the former doesn't...

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  • What methods should save/load a game state

    - by vedi
    There are a lot of articles about how to save a state of a game and they are pretty good. But I have one conceptual misunderstanding where should I save the state? My game has number of screens and pair of them are MainMenuScreen and MainSceneScreen these are inherited from Screen class. MainMenuScreen is shown at start of the game the MainSceneScreen little later. What is the problem? I navigated to MainSceneScreen, forced Android to stop the application (I change a language settings on the device to achieve it, please let me know if I'm wrong). After that I select the application again and I can see MainMenuScreen is shown. But I want MainSceneScreen to be shown. I suppose I should override resume method. But what class I should override? I have class PsGame that extends Game class of libgdx. I put breakpoints to its resume method and it turned out that method was not called. I investigated the problem and I've found little strange code in onResume method of AndroidApplication class of libgdx: if (!firstResume) graphics.resume(); else firstResume = false; My debugger said firstResume was true and didn't go to *graphics.resume()*line. Sorry for a lot of words but could you answer following question: What did I do wrong? What methods should I override? Thank you in advance.

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  • How often does Dreamhost change IP Addresses

    - by pjreddie
    So I just migrated our site to dreamhost because they are free for non-profits. However, right after I switched the nameservers over to them they changed the IP address of the site. So first they propagated out IP address x.x.x.180, then they switched it to x.x.x.178 and had to propagate that out. Point being it meant a lot of downtime since a lot of big DNS servers (like google) thought the address was still x.x.x.180 for up to 5 hours after they switched it. This is compounded by the fact that most our visitors to the site live here in Unalaska and we have local DNS servers that take a LONG time to update (like a day or more) since we get all our internet over satellite. So every time Dreamhost changes our IP address it can mean a day of downtime for us in our community. So my question is, how often do these changes take place? I asked Dreamhost support and they gave me a vague response: I wish I could say, however those changes happen at random times. They're not that frequent, maybe even months between updates, but there's no way to know for sure. First, I hardly believe that they don't know their own system well enough to give me at least some estimate or average. Second, is it worth looking at other providers so that I can get a static IP address? We were hosting the site here originally and hadn't run into this problem since we have a static IP here. We don't get a ton of traffic but usually around 500 hits a day or so, sometimes more if our stories are featured on statewide or national news broadcasts. So hours of downtime every time Dreamhost "randomly" decides to move our server location can be bad for our readership.

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  • Why not have a High Level Language based OS? Are Low Level Languages more efficient?

    - by rtindru
    Without being presumptuous, I would like you to consider the possibility of this. Most OS today are based on pretty low level languages (mainly C/C++) Even the new ones such as Android uses JNI & underlying implementation is in C In fact, (this is a personal observation) many programs written in C run a lot faster than their high level counterparts (eg: Transmission (a bittorrent client on Ubuntu) is a whole lot faster than Vuze(Java) or Deluge(Python)). Even python compilers are written in C, although PyPy is an exception. So is there a particular reason for this? Why is it that all our so called "High Level Languages" with the great "OOP" concepts can't be used in making a solid OS? So I have 2 questions basically. Why are applications written in low level languages more efficient than their HLL counterparts? Do low level languages perform better for the simple reason that they are low level and are translated to machine code easier? Why do we not have a full fledged OS based entirely on a High Level Language?

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  • C# and Unity - Learning to Develop a game by developing the game I want to develop

    - by 97s
    So I am pretty new to C#, I have some python and javascript experience, but nothing substantial. I have read a lot about C# and Unity and I know they are the tools I want to use. My question is: Should I be reading books about C# or should I just start hacking in unity and piecing the game together part by part? Right now I am going through the book, HeadFirst C#, and it is very good, but I taught myself web design and javascript by just creating and hacking until I got the results I wanted then looked at other code to see ways they did it and improved my code. The issue is that with the browser I got immediate results and it was all under one roof, where developing games is a completely different monster. I am just wondering if my time would be better spent buying a book that uses C# to teach you unity, and doing that instead, or if the time spent in HeadFirst book is going to be valuable. Thanks a ton, I am having difficulties using my time, and I just want to maximize it as I don't have a lot of free time. Edit: Hopefully this isn't to broad? If it is, I will delete and go elsewhere just let me know. Thanks.

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  • Nvidia 740M still not working after Bumblebee installation

    - by Jon
    first of all, I have checked a lot of similar topics, but I still can't get my laptop to use Nvidia 740M. So first things first. I have a laptop Asus X550V(i5-3230, 4gb RAM, Nvidia 740M + Intel HD4000). I installed Ubuntu 13.10 alongside Win8(preinstalled) and both systems are running without problems. However, I have problem with second graphic card(Nvidia 740M), as Ubuntu doesn't recognize it. I installed bumblebee with this tutorial https://wiki.ubuntu.com/Bumblebee#Installation, but I still get error "Cannot access secondary GPU" error when trying to run ''optirun Steam'' in terminal. Then I tried to do this: [ERROR]Cannot access secondary GPU - error: [XORG] (EE) No devices detected. you need to edit the /etc/bumblebee/xorg.conf.nvidia (or /etc/bumblebee/xorg.conf.nouveau if using the noveau driver) and specify the correct BusID by following the instructions therein. But with lspci / VGA i get only info about Intel 4000, but no Nvidia. When I type only lspci, I get the line for Nvidia 740M,but after I edit the config file I still get second card error. Also, in /etc/bumblebee/xorg.conf.nvidia there wasn't BusID or anything similar, so I just added the whole line in device section. As I sad, I tried a lot of things to get it working, avoiding this forum(as I din't want to bother people with some solutions possible), but alas!, I had to bother you. If there is a need for some additional info, just say, no problem at all. Thank you very much in advance. :)

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  • Functional testing in the verification

    - by user970696
    Yesterday my question How come verification does not include actual testing? created a lot of controversy, yet did not reveal the answer for related and very important question: does black box functional testing done by testers belong to verification or validation? ISO 12207:12208 here mentiones testing explicitly only as a validation activity, however, it speaks about validation of requirements of the intended use. For me its more high level, like UAT test cases written by business users ISO mentioned above does not mention any specific verification (7.2.4.3.2)except for Requirement verification, Design verification, Document and Code & Integration verification. The last two can be probably thought as unit and integrated testing. But where is then the regular testing done by testers at the end of the phase? The book I mentioned in the original question mentiones that verification is done by static techniques, yet on the V model graph it describes System testing against high level description as a verification, mentioning it includes all kinds of testing like functional, load etc. In the IEEE standard for V&V, you can read this: Even though the tests and evaluations are not part of the V&V processes, the techniques described in this standard may be useful in performing them. So that is different than in ISO, where validation mentiones testing as the activity. Not to mention a lot of contradicting information on the net. I would really appreciate a reference to e.g. a standard in the answer or explanation of what I missed in the ISO. For me, I am unable to tell where the testers work belong.

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  • Can I remove the systems from a component entity system?

    - by nathan
    After reading a lot about entity/component based engines. I feel like there is no real definition for this kind of engine. Reading this thread: Implementing features in an Entity System and the linked article made me think a lot. I did not feel that comfortable using System concept so I'll write something else, inspired by this pattern. I'd like to know if you think it's a good way to organize game code and what improvements can be made. Regarding a more strict implementation of entity/component based engine, is my solution viable? Do I risk getting stuck at any point due to the lack of flexibility of this implementation (or anything else)? My engine, as for entity/component patterns has entities and components, no systems since the game logic is handled by components. Also, I think the main difference is the fact that my engine will use inherence and OOP concepts in general, I mean, I don't try to minimize them. Entity: an entity is an abstract class. It holds his position, width and height, scale and a list of linked components. The current implementation can be found here (java). Every frame, the entity will be updated (i.e all the components linked to this entity will be updated), and rendered, if a render component is specified. Component: like for entity, a component is an abstract class that must be extended to create new components. The behavior of an entity is created through his components collection. The component implementation can be found here. Components are updated when the owning entity is updated or for only one specific component (render component), rendered. Here is an example of a logic component (i.e not a renderable component, a component that's updated each frame) in charge of listening for keyboard events and a render component in charge of display a plain sprite (i.e not animated).

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