After first tests on mobile device my game seems to work. I've done basic logic such as displaying player, simple map (with locations and moving between them) and player control - with collisions with the environment. Tomorrow i will work on enemies (finally, ZOMBIES!) and survivors. I want to finish engine in next two days and use rest of the time to build world, expanded with many locations and put final graphics on. I already found graphic designer with enough free time in that week to make some sprites and tiles - meet
Kuba from HighColors. And meet first Zombie I've ever seen - 1st location guy from Resident Evil (it was 1996 on PSX)
And one technical aspect of designing tileset-based map movement. Let us consider map created from simple array with '0' as road and '1' in the role of wall, e.g.
map[0] = [];
map[0].push([0, 0, 1, 0, 0, 0, 0]); //0
map[0].push([0, 0, 1, 0, 0, 0, 0]);
map[0].push([0, 0, 1, 0, 1, 1, 0]); //2
map[0].push([0, 0, 0, 0, 0, 0, 0]);
map[0].push([0, 0, 1, 0, 1, 0, 0]); //4
map[0].push([0, 0, 1, 0, 1, 0, 0]);
map[0].push([1, 1, 1, 0, 1, 0, 0]); //6
map[0].push([0, 0, 0, 0, 1, 0, 0]);
map[0].push([1, 1, 1, 1, 1, 1, 1]); //8
map[0].push([0, 0, 0, 0, 0, 0, 0]);
Movement and collision detection are easy if we want our character just 'jump' from one cell to another. We need then simply calculate if destination tile is not '1'type (wall).
var x = (player.xPosition/tileSize) + deltaX,
//if we move along X axis deltaX is 1 or -1 and deltaY is 0
y = (player.yPosition/tileSize) + deltaY;
//and vice versa in here
if (map[actualMapIndex][y][x] !== 1) {
//move player
} else {
displayFunnyWallHitAnimation();
}
It gets complicated when we want it to take smaller steps, what is necessary if we want animation. For example our player moves 9px each step in 50px big tile. Because DOM coords are calculated from top-left corner, we can observe case in which our character is moving 'on the wall', like that:
With yellow fields as roads, red walls & dark blue dot as sprite's 0,0. We can see that 0 point of the sprite is on the road but the sprite itself is traveling on the wall. So I got the idea of adding one more point to that, i call it x2, like that:
var x = ((player.xPosition+tileSize*0.2)/tileSize) + deltaX,
x2 = ((player.xPosition+tileSize*0.8)/tileSize) + deltaX
y = (player.yPosition / tileSize) + deltaY;
if (map[actualMapIndex][y][x] !== 1 && map[actualMapIndex][y][x2] !== 1) {
//move player
} else {
displayFunnyWallHitAnimation();
}
I add 1/5 size of the tile to the 0.0 point, and 4/5 for another one. It's because my sprite has a little free, transparent space from each size. In practice it looks like that:
And because of kind of isometric (or oblique) view I use ('will use', because it's hard to say about perspective if i have only semi-colored squares as background), i don't have to introduce additional point in Y-s. It looks good when character is standing in front of the wall like on screen below (like in the old Pokemon games for gameboy).
Ok, I will return to developing now, because, paraphrasing
George Bernard Shaw (I don't really remember how it was originally), "Able is creating, unable is teaching" , and I always find writing blogs as a kind of teaching:).
using 'non open' technologies like flash or Unity. Finally, there are 124 chosen titles in the gallery. Checking almost every game I found couple of technologies, libraries, plugins, frameworks or engines I've never heard of before, or just forgot about. Some of them are worth describing in here. First of all I totally forgot about HTML5 Boilerplate, an "HTML/CSS/JS template for a fast, robust and future-proof site", used in Snake game [MGO2010]. Another technically interesting entry was Black Obelisk [MGO2010], written completely in haXe, opensource programming language with ability to compile to Javascript, Flash, NekoVM bytecode, PHP, C++ and C# or Java in the near future. 
Couple of games was written in Java with cross-compiled JavaScript presentation layer using GWT, eg SVG-EDU [MGO2010] or Zulu [MGO2010]. Main reason people used Flash in their games was enabling sound effects (like Sinuous [MGO2010], the winner of 10kApart). But Wizard Wars [MGO2010] used SoundManager2 to achieve same effect. Mad Tanks TD [MGO2010], one of my personal favorites in the competition, uses LESS, which "extends CSS with variables, mixins, operations and nested rules". Looks cool! (both, the game and the compiler:) ). I was impressed with amount of WebGL based games. In Red shooting Hood [MGO2010], made by Tymon Zgaiński from Poland, member of polish gameDev community Warsztat, I found Sylvester, "Vector and Matrix math for JavaScript". Open web implementation of simple and well known Frogger [MGO2010] was compiled to Javascript & canvas using Ristretto Mobile, "a Web-based Compiler for Running Interactive Games and Simulations". My own entry, OpenOdyssey [MGO2010]was made simultaneous with Mibbu framework and is based on it. I'm not satisfied with the final result, but I will develop both after the competition. If I will find some free time during the weekend I will write few words about OO & Mibbu.
Inspired by few videos posted in comments I would like to announce a little competition. Rules are as simple as possible: 
Few hours before I want to send our game to Ovi challenge I read on the site that organizers gave us additional week for app polishing. I don't think it was necessary - my game was complete on Monday, about 7-8am. I will use my extra time to change it from WRT widget to Symbian app. 
One of the methods that come to my mind was to render HTML/JS in simple browser-like application. It is possible for example using 
I decide not to show everything in here - it has to be a little mysterious and something must motivate you to play when the game will be finished:). What I want to say & show today, two days before the deadline, is very simple table based map editor I write in about 200LOC with simple DOM manipulation using 24 sewers tiles placed in one png file. It is easy and not so annoying to use, just watch the video below. Second part shows early location exiting/entering (it is already changed), Zombies AI, and better than yesterday connected map tiles.
