But there is one particular aspect that might well be the root to all the issues I encountered and still have to face: AirlineSim is a transport simulation! Let me elaborate on why I see this to be a problem:

Simulations are not games

Although many games call themselves “simulations”, few simulations are anywhere close to “games”. Sure, since AirlineSim stems from a community of enthusiasts rather than professionals, any IT professor would strongly disagree when I would call AS a serious, scientific business simulation. But at the same time my goal always was to  create a decent image of the real-world airline business. A lot of emphasis was put into correct flight schedules, fleet lists, departure boards; the databases are filled with almost all current commercial airliners and all airports carrying an IATA code; there are more than a dozen types of staff, typeratings, correct financial accounting and a whole lot of other stuff that adds complexity and maybe realism…but only few of which make the game “fun”.

Ok ok, this was only partly correct: Of course, it is fun! It is fun to me and to a certain group of others who share a similar mindset. But have you ever tried to explain AirlineSim’s concept to a friend and she started to jump around in excitement because she could not wait to try it herself? See…me neither!

Simulations…simulate

Sounds obvious, right? But to many it isn’t. Transportation in the real world is a tough business. It tends towards monopolistic structures and absolute competition. In fact, until recently, ocean shipping was one of the last industries to have hardly any anti-trust regulations for the simple reason that it would completely destroy itself if there were any. The situation in aviation was only different because airlines were entities of national interest, state-controlled monopolies or strictly regulated private companies. Since privatisation started, the aviation industry as a whole never made any profits, with only few airlines being financially successful over longer periods of time. In the US, a large-scale consolidation is in full swing and only few players will remain while in Europe British Airways seems to be at the brink of collapse, leaving the field to the two remaining giants: Lufthansa and Air France-KLM.

So why does this real-world babbling matter to AS? Because it is a simulation! As such it automatically inherits all these problems with all their consequences and reproduces them within the game. In the real world, these problems are met with strict rules and regulations. But who wants to play a game that leaves no freedom to the player? Doing this would essentially remove competition, the one thing a game usually is about. So there are two extremes: Absolute competition or none. Neither is fun.

Woah! Feature creep!

Ever had the chance to participate in an AirlineSim community meeting? It’s awesome! You sit there with all the good friends from the community, you have some beers, talk about the game. And the longer you talk, the more ideas spawn. Ideas how this aspect from reality could be added to the game and how that feature could be made more interesting. At the end of the day I can’t help but building all kind of cool gadgets into the game – remember, I love aviation and I love “my game”.

Of course, not a single one of these additions ever shows up in any long-term master plan. Nobody ever thought about whether it affects the simulation’s balancing. Does it hamper the performance or might it be too complex for new players? Will it ever get finished and is it even useful? It’s feature creep! You add buttloads of stuff because it sounds like a good idea and – most importantly – because you like it. You think a simulation can not have enough “realistic features”. This way of doing things is poison for the overall usability. It creates a huge system that’s impossible to balance. It makes the game difficult to grasp and creates an awefully steep learning curve to starters. In short: It’s not fun!

The audience is…special

The audience of serious sim games is the direct opposite of the modern breed of “casual gamers”. They have clear ideas on how they want the game work. They can live with an old-school interface and a total absence of graphics, but they want to understand every single formula in the game. They find long tables of load data exciting and charted figures even more thrilling. They are hardcore players, either in business simulations, aviation games or both. They have done their homework and can pin-point any false aircraft characteristics, lacking feature or wrong account number. If they do, they provide you with detailed essays (of which there are at least 5, all describing a different approach) on why they think it’s wrong and what should be done about it. If you shift a table or (slightly) change an existing interface, expect an enormous shitstorm on why you just ruined their whole live.

They are true fans! They invest unbelievable amounts of time in the simulation. They identify with their airline and they tend to refer to their effort as “work”. Yes, it sounds absurd, but if something (like a patch) threatens the existence of their virtual enterprise, they are afraid that “all their work” might be lost.

You can imagine that pleasing this kind of audience is sometimes difficult. I’m learning this the hard way right now with the upcoming release of AirlineSim 1.5. I thought I had built a really cool new route management interface that would be more appealing to players. But so far the opposite is the case: A certain share simply doesn’t like it because it’s different. A considerably smaller amount of players can provide constructive critisism on how certain aspects could be improved. And then there’s the hard core…the huge players, the top 20 of the largest airlines, the operators of hundreds and thousands of aircraft. The players who push the system to the limit. If you build a new feature, you always have to keep them in mind. A drop-down that contains 50 entries for a “normal person” contains 5000 entries for one of the big boys. If you implement a change that adds a single click to whatever “workflow”, this tiny change is a disaster to them because they have to do it 1000 times in a row. They look at the system in way that’s almost impossible to grasp for me or anybody else on the team! Is this way of “playing” fun? I don’t know, but probably not to many.

And the conclusion?

If you look at the great games of the past and the presence, be it casual or “hardcore”, computer-based or board game, you find one common thing among all of them: They are abstract! Even games that appear rather complex – for example Civilization – are in fact based on very simple game mechanics. There are only so many variables that can actually be put into an equation and balanced. Usually there are only one, two, maybe three aspects within the game you can actively control as a player and they achieve a high level of immersion anyway. They might be tough to master, but they always are one thing: Fun!

So if I ever had to do AirlineSim again? I’d make it a game, not a simulation.

In a few days time it will have been 10 months since the international portal for AirlineSim was launched. This basically marked the final public step towards my decission to do browsergames for a living. As you can see, I don’t live under a bridge just yet, so it hasn’t been all bad. But it’s also been a tough time that brought to light many weaknesses of AirlineSim that never appeared to me before. Most importantly I underestimated how difficult it would be to transform a hobby project that’s been around for several years into a commercial one that needs to sell well enough to pay the bills of at least one person (and his cats).

AirlineSim has always been layed out as what the name suggests: Being a realistic airline simulation. This never included making a game that achieves a revenue per player of X or a conversion rate per new visitor of Y. In fact, no such “KPI” ever occured to me or anybody else on the team and obviously it didn’t have to because there was no reason for the hassle. So several thousand files and 10s of thousands lines of code after it’s first appearance in 2002, AirlineSim has developed into what it is today: A huge piece of software that will never be “finished” and will never become a “bread & butter project”.

Don’t get me wrong! I still love AirlineSim, it will always remain my baby and I won’t stop working on and extending it any time soon. But there’s a saying that I picked up quite some time ago somewhere on the net that sums up the problem quite well:

If you have to keep putting money into it, it’s not a business, it’s a hobby.

Now I’m not exactly putting money into AirlineSim. In fact, it pays most of my bills. But “most” isn’t “all” and there needs to be a point where I have to shift at least some of my resources (being time, primarily) towards something that will a.) close that money gap that AS fails to fill right now and b.) permits to further support AirlineSim as what it always has been and always will be: A niche game for a rather limited group of enthusiasts (including myself).

And there we go: The reason for my insomnia! It’s not the fear of living in cardboard boxes but the constant brain-storming about a follow-up project. It’s the first time in years that a new, large project appears on the horizon and whenever the daily work is finished I can’t stop thinking about all the different themes, possible features and hibernating ideas that would make for an interesting game. At the same time all these “nice-to-haves” mix with the experience I took away from 10 months of commercial AirlineSim that tell me something about what a web-game has to look like nowadays to become successful.

I’m pretty sure that, whatever it will end up to be, the next project will once again be some kind of business simulation. It will be a lot more streamlined than AS ever was and there will be a much stricter and better structured “master plan” to everything. There will be a focus on usability and intuitive gameplay from day one and I will put more emphasis on reaching a generally broader audience. At the same time there really mustn’t be the kind of feature-creep I’ve experienced in making AS, meaning that I could spend weeks after weeks adding new (important?) features without getting anywhere in the larger picture, pushing the development costs of the whole project through the clouds. A first playable release of the new project has to be out after a few months’ work and earn money from the start.

So…exciting times coming up! I’m still looking for more ideas and I’m sure there are themes that you have always wished for in a game but never got realized. If that’s the case, feel free to drop me a line! For the AirlineSim fans among you: Rest assured that development of AS will continue as planned at least until 1.5 has been out the door and through it’s first few iterations. After that I’m planning to scale back on AS a bit but to keep supporting and extending it with regular patches.

Usually, after Apple announces a new gadget, people are excited about the things they saw. But this time the vibes on the comment sections of large tech-sites feel totally different. People are disappointed because the iPad is a weak blend of iPhone and MacBook. It lacks connectivity and storage options big time (no card slots, no USB) and it is not usable as a phone unless using third-party VoIP applications. It brings along the tight restrictions from the iPhone (you can only buy apps and media via iTunes) while offering hardly any advantages of a notebook. Although I probably wouldn’t care, some complain about the absence of a camera and I figure that the comparably short battery life is an issue for people who’d like to use it as an e-reader.

So after all I see only two ways that could lead to a success of the iPad:

1. The Apple factor: A large portion of people will buy it because it’s a beautiful gadget from Cuppertino and they will ignore the fact that they are forced to use a not-even-that-cheap device exactly the way Apple’s designers want them to.
2. The iPad is received by consumers as a mobile high-end web and gaming platform.

I can imagine that sitting on a train or in a cafe and having the iPad to surf the web would be a far more comfortable experience than doing the same on an iPhone. But that’s basically the only area in which I see the iPad as a winner. Apple is great at establishing new products – the iPhone being the grandest example – but history shows us that even Apple can fail…and I see the chances of Apple failing with the iPad higher than with any other product in their portfolio.

To begin with, my new mouse: The recently released MagicMouse from Apple. I’ve been a happy Microsoft IntelliMouse Explorer user for the last years. In fact I hardly saw the need to replace my mouse. So the reason I put the MagicMouse on my wishlist was primarily due to Apple’s excellent marketing…and the fact that I really enjoy the MacBook’s multi-touch functionality which Apple has now added to a seperate input device for the first time.

Like with every new mouse, the first thing that feels awkward is the size and shape of the new tool. The MagicMouse is no different in this respect as it’s considerably smaller than the Explorer and it will take me a few days to completely adjust. Also, since the total of the mouse’s shell is a single button, it feels strange to do a “click” because the whole thing appears to be moving. At this point I got to say that Apple could have put more emphasis on making the click a little less noisy. Somewhat similar to the multi-touch mouse-pad of the new MacBooks, which is a button too, the click is very loud compared to other mice. The “scratching sound” when moving the mouse over the table surface is comparable to that of the Explorer while any sound when scrolling is obviously nonexistant with multi-touch gestures (a noticable issue of the latest IntelliMouse Explorer).

That said, the most important feature of the MagicMouse of course are the touch gestures. Scrolling in all directions feels extremely natural because all you have to do is slide around with your finger. This is extremely useful for web pages with horizontal scroll bars (why do those exist, anyway?) and appears to be a good replacement for the MightyMouse’s scroll ball which apparently caused quite some trouble after extensive use. A two-finger swipe left or right allows to navigate forward or backward, primarily through your browser history. This is extrememely useful, especially since I learned to love this feature while still working under Windows with an Explorer mouse (which had buttons on the side mapped to these functions) and then missing this functionality under OS X due to bad driver support.

So overall I’m quite happy with the device so far. It’s the first wireless device I ever used as I’m very sceptical about having a mouse dependant on a battery, so it will be interesting to see whether the MagicMouse can change my opinion on those in general. When back in my own place I’ll try to write a few lines about the other important piece of tech I found under the tree this year.

The first step is to check in a custom PageAuthorizationStrategy whether a CAS assertion exists. I’m using the filters provided by the Jasig CAS Client to place the assertion in an AssertionHolder. If no assertion is provided (which means the user is not logged in) I use Wicket’s intercept page mechanism to redirect the user to CAS.

As you can see, the code is pretty much straight forward: When the user isn’t logged in and a login is required (”isLoginRequired” just for demonstration purposes), the URL for the redirect to CAS is built. Since I’m using an intercept page, the path in the service parameter always points to “/redirectAfterLogin”, but more about that in a minute. The URL is passed to a new instance of RedirectPage which itself is passed to the RestartResponseAtInterceptPageException. When this exception is thrown, Wicket will “remember” the page the user just tried to call and redirect him to the RedirectPage. The latter will immediately redirect him to CAS for login.

So what about the “/redirectAfterLogin” in the service path? At this location I mounted the following page class:

Its job is very simple. All it does is redirecting the user to the page Wicket “remembered” when the RestartResponseAtInterceptPageException was thrown. Since the user might access this page by accident and there is no markup for it, make sure to provide a response page even if no original destination is available. Otherwise the user will get to see an error page. I used the application’s home page as the default here.

And that’s basically it. Please note that the code snippets above are untested pseude code and will most definitely have to be adjusted to your environment.

Along came a new theme. I looked around the web for several hours searching for one that was easy to modify, as I wanted the new design to resemble the look of the old one and at the same time to take it a few steps further. Because I really wasn’t in the mood for CSS hackery today I settled with this professional but less customized template. I might switch to another one in the future in case I finally come across a good one I like.

Since I’m often switching between languages here, I tagged all posts with the language they are written in. To list all posts available in your preferred language, simply click DE or EN in the tag cloud on the right. After doing so you can also subscibe to an RSS feed based on that tag.

Please let me know what you think.

First of all, the yearly team meeting which took place at a classic location in Stuttgart was a great success in any sense. Besides the culinary part of it we thought a lot about AirlineSim and how we could improve it. The bad thing: We’ve got so many nice want-to-haves on the list now that I have no clue when and how we’re supposed to realize them. But oh well, we’ll find a way…if you happen to be an experienced Java programmer and have an interest in helping us out, please let me know .

As mentioned on the forums we decided more or less spontaneously that AirlineSim deserves a major overhaul. So I’ve been spending a whole lot of time lately building up a new foundation based on an awesome component-based Java framework called Wicket. Although the learning curve is quite steep for my taste I’ve come to love it over the past months I’ve spent working with it at my day job. It most definately is a pleasure compared to the current Struts 2-based setup and it allows for far more up-to-date features while keeping development time for these gimmicks extremely low. So to keep it short: It’s been fun to work in AS lately and I’m really looking forward to our new major version…it’s going to be a milestone in AirlineSim’s history.

But that’s not all. As you might know, AirlineSim is published by 4players so far. And while it will stay that way for the German version we need to build up everything from scratch for the international launch. First question was: What’s going to be our domain name? Nobody (us included) thought of reserving airlinesim.net or another non-German and well known TLD when the project was started 6 years ago. Now all of the good variants are taken by other entities. Well, almost. One team member came up with the idea to get an .aero domain. This sponsored domain is only available to "members of the aviation community" and because I liked the idea of such a domain a lot I handed in an application for a .aero ID on Sunday. Monday I got a response saying that more information on our request was needed…we had to prove that we actually deserve such a domain. I was kind of scared since I really wasn’t sure whether this was going to work out at all. So I wrote a short text about who we are and what we do, that we’re very interested in a realistic simulation and that many of our players and team members are actually aviation professionals (which is true, btw). When I opened my mailbox this evening the first thing catching my eyes was a heading which looked very promissing…and in fact it was the confirmation that we’re now authorized to register .aero-domains! Wohoo!

So now everything’s about paving the rest of the way to our international launch…registering the actual domain, getting a server, setting everything up and, oh yeah, program a new version of AirlineSim. I almost forgot. So dear reader…I’m back in the code. I’ll keep you updated!

But now a little something about our trip itself. We took the East Rail Line to Kowloon Tong and changed to the Kwun Tong Line to get to Lok Fu. The "Checkerboard Hill", the little mountain the checkerboard is placed on, is located in a small park right next to the station. Unfortuntely we didn’t bring along a map (d’oh) and since we thought the hill was a little further off we started walking straight into the wrong direction. After we walked into a few dead ends and around the complete park we finally got a glimpse of our goal through fences and plenty of vegetation. We then tried to climb up the hill to get both a view of the old airport as well as the board itself. But since the whole top of the mountain is a fresh water reservoir everything was tightly sourrounded by fences and it was prohibited to step about anywhere. Since both of us are self-confessed wimps who enjoyed a good education we didn’t dare to cross any of those lines of course. But obviously we weren’t alone in our pilgrimage and we met an asian couple who seemed to have the same goal as we did. Contrary to us they were quite a bit more daring and bravely ignored the old signs "blocking" the entry to some dirt tracks around the middle part of the hill. So we followed them and figured quickly that absolutely no one except us ever gave a damn about the signs…at least judging from "trails" they left . Shortly after we enjoyed an almost unobstructed view of the old airport (now a large construction site) and Kowloon. The checkerboard itself is in a miserable condition, covered by weeds and trees to a large extend and with the colors worn off over time. If it wasn’t for the water reservoir the whole hill would probably have already been converted into building ground for an office building, an appartment tower or, most likely, a mall. It would be really nice if someone could clear the board of all the plants, give it a fresh paint job and make it more accessible. This would keep a little piece of Hong Kong history alive… something that should have been done a lot more often in this city but was usually neglected.

Anyway, I can claim I’ve been there! You can take a look at a few of the photos we took here. And if you think we’re crazy…hey, some people fly around the globe just to walk around a stone in circles, so I can take the MTR to look at a checkerboard .

That should be enough of the personal stuff though. Now that my family, my girlfriend and even my roommate left, one might think there should be plenty of time to get some work done. And as I never found a way out of my motivational dive cruise I can’t see myself spending much time travelling in the very near future either. Perfect conditions to rot in front of the screen…and in fact, after I wasted yesterday by bringing malaria pills to the airport (thanks Mark ), today I officially started the work on the next major version of AirlineSim, namely 1.4. Don’t get too excited…not a single line of code has been hacked in so far. We’re having so many features, changes and improvements in mind for this milestone that the first thing to get done was some organizing. The result was a rough list of about 30 topics basically covering every aspect of the game in some way or the other. It contains mostly changes that will be applied to existing functions but there are also some brand new features on it which I will leave in the dark as of now of course . Still, you should be able to imagine that a whole bunch of work will come along with this wishlist and I expect it to have grown to easily above 200 tasks after we went into the details. Actually it feels like at the beginning of a totally new project whenever I look at this pile of stuff to get done. Unfortunately all this will have to take place under heavy time constraints as I will only have about one month of spare time before my internship with Agility Logistics starts in March. Naturally I’ll spend this time with my girlfriend to a large extend so we will have to see how AirlineSim can squeeze in. Either way I reckon that several months will pass until this major release will see the light of the day. And seriously…I can’t wait for it

Another small thing that might be interesting to some of you: Today I did what Hong Kong is known for best to many people…I ordered a tailor-made suit. Measures were taken today, first try-on will be on monday and the whole thing will be finished some days later. I’m really anxious to see the results next week. Mark and Norman already ordered theirs a few days earlier and had their first try-on today. The difference between a regular of-the-shelve suit and a custom made one is very obvious. The package will include the suit, a shirt and an additional pair of trousers…for the price of my current suit which I bought back in Germany last year. They will keep my measures and whenever I need a new suit I can reorder one and they will ship it to any place I need it at. As soon as I see the results I will let you know about it. Chances are you come by HK some day and need one too .