A sunrise industry coming up in West Delhi’s Uttam Nagar - LiveMint on Eko

New Delhi: Shyama Kumari has a new-found sense of confidence. The 20-year-old college goer taught part-time at a local school for two years and saved Rs8,000, which she has put in a bank account. Her banker? The local drug store.

Kumari isn’t the only one who banks in a shop and shops in a bank. Around 1,400 people in her neighbourhood, Uttam Nagar—a lower middle class colony in West Delhi—have, through shops that include grocers and chemists, opened accounts that now have between Rs20 and Rs 14,000...

Here's the link to the complete article on liveMint.

I want to make a mobile game! - Part II

Continuing from where we'd left. Its time to get into the typical process of mobile game development - lets call it 'Life of a mobile game'.

Day 0 - A game idea is born!

The starting point

Keeping all the things mentioned in Part I in mind, the starting point for a game is – your mind. The whole cycle begins from an idea that you get (while you were perhaps taking bath in cold water on a chilly Monday morning ;-). The first step would be to document this into a form that even a layman could understand and appreciate. If possible (if you can draw decently well), add mock up-screen shots as well.

Remember, a sketch is sometimes better than a thousand words. Present your concept to your colleagues/ friends and get their feedback on it. Obviously, one attitude a game designer must have is to be very open to criticism.

Documenting the concept

So now your concept document is ready. It’s time then to create the design document. The design document essentially connects the concept to the intended game play and takes into account the constraints that might be imposed by the target handsets. The design document should be treated as the main reference material for your game project. It would be a living document which grows with your project. The design document should capture the aim of the game; describe the characters, friendly objects, enemies, platforms, levels and how each of these
elements would interact with each other in simple words. It could also specify which keys are supposed to do what function in the game, the target handsets and the audience.

End of Month 1, still doesn't say ‘mama’

Graphics

As a part of the design process, you must have also come up with a list of graphics assets that will be required in the game. The artwork is the skin and clothes for your game. It is what will be visible to the rest of the world. Make your artwork as snazzy as possible. The specialized art-form for mobile games is called pixel art. (It is a specialization skill in itself – google it out to know its wonders).

There are a few game components that every game developer must be familiar with. The first among them is a Pixel. A pixel is simply the smallest distinguishable unit of a screen display. Currently there are no direct techniques to draw less than one pixel on the mobile screen.

The second is a Sprite. (No, its not the green bottle of carbonated 'all taste, no gyan' that I am talking about :-) ). A sprite is a transparent image, usually depicting a character or an object in a game. Every character in a game therefore has its set of sprites for each action that is involved. The image containing the set of sprites is usually referred to as the sprite-sheet. The following is a selection of sprites for the the protagonist 'Ramson', from the game Ramson's Quest.

© Tinfo Mobile 2006

The next component is called a Tile. A tile is conceptually similar to the mosaic or ceramic tiles that might have been used on the floor of your house. A tile is a rectangular (mostly square) piece of the background of a game screen. In other words, a set of tiles arranged as rows and columns make up the background layers of a game. Why use tiles? Why not have a large image that could be drawn on a screen? Consider a platform adventure game like Ramson's Quest, where the hero has to move across platforms (which are pretty long) to reach some destination point. Assume that the level is currently 100 tiles wide and 15 tiles high. If each tile is 16 x 16 pixel square in size, that translates to an area of 100 x 15 x 16 x 16 = 384000 pixel square. Since every pixel of image space costs two bytes space, this translates to a whopping 750 KB just for the background image! This is simply not feasible due to the following reasons:

1. Most devices have a hard limit on the maximum image dimensions. Though there is no hard and fast rule, it would be a safe bet to limit any image within 255 x 255 pixel square size.

2. Most devices do not have a separate image memory and the heap in most devices is restricted to 200 KB (again, this could vary, but 200 KB limit is the safe limit, 512 KB is quite usual on most MIDP 2.0 phones).

3. Such a large image will take a lot of space in the jar file. (A Java application is packaged as a Java Archive file- the same as a compressed zip file and has an extension .jar). The safe limit for the jar size is very low. On some devices, as low as 64KB.

4. A game involves a fair amount of interaction between the background and the characters. Having a big image will necessitate getting the pixel data at a given position. For example, Ramson can stand on grass but has to be hurt by a water-fall. If the image is single piece, the only way to do this would be to get the pixel data at the location where Ramson is situated. But this, is not directly possible at least in MIDP 1.

5. Certain regions in the background need to be animated, for example the waterfall in Ramson's Quest is animated, to make it appear as if its flowing. This is not again not possible with a single background image.

All these reasons effectively rule out the possibility of using a single background image for the entire level. Now let us see how tiles help.

Below is a small section of a game level from Ramson's Quest 2 (a 1200 x 200 image scaled down to fit blog):

© Tinfo Mobile 2006

This 'big' image can be drawn using just a handful of 'small' tiles (just around 12 of them)!

To map which tile gets drawn where on the screen, we have a Tile-Map. A tile map is a two (or one) dimensional array which says which tile is to be drawn at the given location of a map.

The tile-map for the layer above may look something like:
0,0,0,0,0,0,0,0,1,0....

0,0,0,0,0,0,0,0,2,0...

0,0,0...

0,0,0...

4,0,0..

4,0,0..


(Assume, waterfall tile numbers are 1,2. Blank tiles are 0 and 4 is the wall tile)
I hope you get the picture.

As to how exactly a tile-map and a tile-sheet (an image containing the set of tiles) can be used to render a background and thus design game levels is something we will investigate in the next article.

As an exercise, google out the terms mentioned in bold in this article and know more about them. For the more enterprising readers, do go ahead and make a tile drawing algorithm! And do post a comment if you need any help.

I want to make a mobile game! - Part I

(Or, how do I get started on a mobile game development career?)

Introduction

Mobile game development is an art. As with most other forms of art, it demands two attributes from its practitioners and practitioners-to-be: aptitude and attitude. While attitude can be built up, aptitude is something that is inherent (or conditioned over time). A better term to use would be – talent. The only point I would like to stress here is that though it is by no means a rocket-science, one just cannot expect everyone with a degree in computer science to be good mobile game developers by default. So if you really want to be in the games development industry you should have by now at least tried to have made your own game – at least a tic-tac-toe! Whenever you've played Roadrash on your PC, you should have pondered and thought over how you could do something like it yourself! If you think you're on the right track- read on :).

This article is intended to provide you a general backgrounder on mobile games development and the industry so that you could take informed decisions on whether this is what you might want to chose as your career (or you just want to kill some of your time, reading though something interesting ;-).

As for me, my initiation to this enchanting word was perchance (providential). I just happened to be put on a mobile game project half a decade back with nothing more than a web browser to rely on. So, most of the things I learnt - I learnt the hard way (Which is kinda good, since you know how exactly things should not be done). Anyways that brings us to the all important question:

Why mobile?

Thats a 'Yeh PSPO nahin jaanta? (an ancient Indian television saying ;) )' kind of statement. Anyways, it makes sense to know why anybody (people like us) would want to bother about making games and applications for mobile phones in the first place!

1. The mobile handsets today are essentially programmable / re-programmable devices.

More than 90% of the handsets being shipped nowadays have some programming interface. Java is one of the most popular options today but not the only one.

2. They are connected devices. Connectivity is a built in feature of the mobile handset. Assuming that you have signed up for data services, the mobile phone is now a device that is capable of sending and receiving data over the Internet.

3. The mobile phone is clearly the most popular digital device in the whole wide world. Just look around and count. The number of mobile handsets you see will outstrip the number of the other digital devices that are around you. And this represents enormous opportunities. In India, there are almost 200 million mobile subscribers! And that my friends is the basic reason for the existence of the mobile entertainment industry. Even if the revenues might not be initially attractive, the customer base is.

4. Mobile game development is cool! Game development in itself is considered the cutting edge of programming. While most software engineers will end up in typical software services firms; only a chosen few will get to be in this industry. For the moment – this IS niche :-).

It might also be helpful at this juncture to have an overview on mobile network technologies prevalent today. GSM and CDMA. This does not have a direct relation to the gaming world except for the fact that most CDMA handsets use BREW, while most GSM handsets use Java.

GSM stands for Global System for Mobile communications. This clearly is the more popular sibling.

Usually Narrowband TDMA, 8 calls on one freq.
1 billion + subscribers (2004 statistic).
India 2007 August: 135 million

CDMA (Code Division Multiple Access). Based on a declassified US Defence encoding technology to which Qualcomm Inc. holds the patent (So for every CDMA handset sold anywhere on the globe they get a royalty!) Supposed to be more spectrally efficient than CDMA and is completely digital.

Based on spread spectrum modulation.
Roughly 25% market.
India 2006 August: ~40 million

Mobile games are different

Since I belong to the mobile entertainment industry, this article will be based on the mobile platform. Mobile games are different from games on other computing platforms due to following reasons:

1. Too many constraints. Everything is limited and in short supply including screen-size, memory and customer's patience. So mobile game programming is all about writing the most optimized codes and designing optimal graphics and putting it all together in the smallest package.

2. Shorter development cycles. While game or console titles' development typically spans over a year, a mobile game takes a few months to develop. Therefore, while a full scale title on a PC would cost billions of dollars nowadays, a mobile game would cost only its fraction.

3. Mobile users are spread out among all socio-economical classifications and therefore a major chunk of the users comprises of casual gamers or first time gamers. The primary function of a mobile phone is not gaming and this must be kept in mind while designing the game. A gaming console on the other hand is designed from the ground-up for gaming and for gamers. The games there would be a bit more mature in nature and might not be as generalized as a mobile game might be. Another important statistic now available says that there are almost as many female mobile entertainment users as there are male.

4. You must keep in mind that the mobile games market is already crowded. Make sure what you develop is something that is clearly different from what is already available.

Assuming that you are by now convinced about the size and scope of the task at hand (and are still interested), lets carry on.

In Part II, we will move on to the actual process followed in developing a mobile game.

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