"JavaScript (sometimes abbreviated JS) is a prototype-based scripting language that is dynamic, weakly typed and has first-class functions. It is a multi-paradigm language, supporting object-oriented, imperative, and functional programming styles." From Wikipedia. ...

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-3
votes
3answers
261 views

Game getting progressively laggier?

I have a small game in HTML5 that uses socket.io to communicate with a node.js server. Now my problem is that, ever since I did my last update on it it seems to have something "chunk up" in the ...
42
votes
7answers
3k views

Managing text-maps in a 2D array on to be painted on HTML5 Canvas

So, I'm making a HTML5 RPG just for fun. The map is a <canvas> (512px width, 352px height | 16 tiles across, 11 tiles top to bottom). I want to know if there's a more efficient way to paint the ...
0
votes
2answers
1k views

Lighting effects with 2D sprites

I would like to know how to best achieve lighting effects with 2D. I guess the only way is to make sprites of the area to be lit in specific colors? Say I have a streetlamp, and around this place ...
15
votes
3answers
2k views

How do history generation algorithms work?

I heard of the game Dwarf Fortress, but only now one of the people I follow on Youtube made a commentary on it... I was more than surprised when I noticed how Dwarf Fortress actually generates a ...
3
votes
4answers
4k views

2D Collision in Canvas - Balls Overlapping When Velocity is High

I am doing a simple experiment in canvas using Javascript in which some balls will be thrown on the screen with some initial velocity and then they will bounce on colliding with each other or with the ...
1
vote
2answers
710 views

Multiple setInterval in a HTML5 Canvas game

I'm trying to achieve multiple animations in a game that I am creating using Canvas (it is a simple ping-pong game). This is my first game and I am new to canvas but have created a few experiments ...
1
vote
1answer
620 views

How do I go from a simple html5 tic tac toe game to an online 2 player game?

I've been working on an online 2 player Tic Tac Toe solution for blackberries. both old and new. And so far I have html5 code that has a 3 x 3 layout that switches between x and o for the game ...
1
vote
1answer
449 views

A* Start path finding in HTML5 Canvas

I'm trying implement A* Start path finding in my games(which are written with JavaScript, HTML5 Canvas). Library for A* Start found this - ...
7
votes
2answers
309 views

What is the standard way of delivering HTML5 games to portals and such?

Let me explain what I mean by "standard way of delivering"... Think about Flash games sites. Flash games can be delivered as a single file, either hosted by the site, or, I guess, provided by someone ...
1
vote
1answer
206 views

Calculate travel time on road map with semaphores

I have a road map with intersections. At intersections there are semaphores. For each semaphore I generate a red light time and green light time which are represented with syntax [R:T1, G:T2], for ...
4
votes
6answers
716 views

Should I refer to browser-based games as HTML5 games or Javascript games?

First of all, I know that there are alternatives to both HTML5 and Javascript, but I worded the question so generally ("browser-based") because if I had said "HTML5" or "Javascript" games that would ...
1
vote
1answer
1k views

What is wrong with my Dot Product?

I am trying to make a pong game but I wanted to use dot products to do the collisions with the paddles, however whenever I make a dot product objects it never changes much from .9 this is my code to ...
0
votes
1answer
670 views

How do I do JavaScript Array Animation

I'm making a game but don't know how to do Array Animation with the png Array and game Surface that I made below. I'm trying to make it so that when the Right arrow key is pressed, the character ...
1
vote
1answer
183 views

Manually updating HTML5 local storage?

I'm just starting out HTML5 game developement (and game dev in general) and watching all the videos and tutorials available something has crossed my mind. Everyone keep saying I should set the ...
6
votes
3answers
1k views

Split a 2D scene in layers or have a z coordinate

I am in the process of writing a 2D game engine, and a dilemma emerged. Let me explain the situation... I have a Scene class, to which various objects can be added (Drawable, ParticleEmitter, ...
2
votes
3answers
5k views

How do I structure a 2D platform level?

I'm doing a 2D platformer but I don't know how they are usually built. The approach I'm looking at is making it tilebased, with ground tiles on bottom row, then platforms on some places in "mid-air" ...
1
vote
1answer
239 views

How to perform efficient 2D picking in HTML5?

I'm currently using an R-Tree for both picking and collision testing. Each entity on screen has a bounding box for collisions and a separate one for picking. Since entities may change position very ...
3
votes
2answers
1k views

Essential 2D engine features [closed]

I have decided to make a simple engine for a new game I'm working on, and now, I'm wondering: what are the essential features of a 2D game engine? Or, a game engine in general?
0
votes
1answer
684 views

How to handle animations?

I am coding a simple 2D engine to be used with HTML5. I already have classes such as Picture, Scene, Camera and Renderer, but now I need to work on Animations. Picture is basocally a wrapper for a ...
0
votes
2answers
180 views

DrawImage doubt

What is the best option for animation in a game (HTML5 Javascript)? Put all the images in one png and change the background. Or create each image separately and draw with DrawImage?
2
votes
2answers
307 views

how to transform child elements position into a world position

I'm making a 2d space game in Javascript with canvas. In this game there's a bunch of spaceships, positioned in world space, with turrets, positioned relative to their parent ships. These objects also ...
6
votes
1answer
553 views

What is this JavaScript gibberish?

I am studying how to make a 2D game with JavaScript by reading open source JavaScript games and I came across this gibberish... aSpriteData = [ "}\"¹-º\"À+º\"À+º\"À+º\"¿¤À ~C_ ...
4
votes
1answer
707 views

How to draw a global day night curve

I see many applications which have world-clock map, and I would like to make my own to enhance some of my mobile apps. I wonder if anybody has any knowledge where to start, how to draw a curved shadow ...
-2
votes
1answer
843 views

Extremely simple online multiplayer game [closed]

I am considering creating a simple multiplayer game, which focuses on physics and can accommodate up to 30 players per session. Very simple graphics, but smart physics (pushing, weight and gravity, ...
1
vote
1answer
256 views

How can I keep track of a battle log on a web game?

Recently I started working on a Web turn-based PvP RPG game. Now I'm working on the battle system but I encountered some issues: How can I keep track of everything that happens in the battle? It ...
5
votes
1answer
1k views

Implement Fast Inverse Square Root in Javascript?

The Fast Inverse Square Root from Quake III seems to use a floating-point trick. As I understand, floating-point representation can have some different implementations. So is it possible to ...
1
vote
2answers
1k views

Javascript A* path finding

I am trying to learn A* path finding. I am using this library - https://github.com/qiao/PathFinding.js But there is one thing I don't understand how to do. To find a path from player.x/player.y ...
0
votes
2answers
485 views

how do i make the JS/jquery tic tac toe squares only clickable once?

As i have it now my script makes the 3x3 grid clickable, and I dont know exactly how to turn on the click once it has been clicked. This is using jQuery and a simple if else statement to switch ...
0
votes
1answer
1k views

HTML5 Canvas Tileset Animation

How to do in HTML5 canvas Image animating? I am have this code now: http://jsfiddle.net/WnjB6/1/ In here I am can add animations something like -> Animation.add('stand', [0, 1, 2, 3, 4, 5]); But ...
0
votes
2answers
478 views

Calculating an experience formula

I'm having trouble working out a formula using this experience curve to get the total exp after each level. I bet its easy and im just over thinking it. maxlvl = 10; increment = 28; baseexp = 100; ...
2
votes
1answer
445 views

Customize Colors for Sprites in Web Game

So I'm working on an html5/javascript/css3-based game. Without going into too much detail, I'm thinking of having the characters be simple 8 or 16-bit style sprites, but I'd like to allow the user to ...
1
vote
1answer
699 views

Collision detection in multiplayer games

This a followup to my previous question: How to implement physics and AoE spells in an MMO game?. There, we concluded that all physics have to be done on the server, and that I should use cylinders ...
3
votes
3answers
1k views

HTML5 Canvas Game Timer

How to create good timer for HTML5 Canvas games? I am using RequestAnimationFrame( http://paulirish.com/2011/requestanimationframe-for-smart-animating/ ) But object's move too fast. Something like ...
8
votes
5answers
571 views

What implications does JIT (javascript/canvas) vs. AOT (Flash) have in terms of browser based game performance?

In my experience, even till this day, I still see more of a visual lag in entity movement / animation in JavaScript (Canvas) based games than I do in Flash based games. Why is this - what exactly is ...
1
vote
2answers
474 views

Frustum Culling/Only rendering what's viewed by the Camera in HTML5 Canvas?

I coded up a simple 2D Camera for my HTML5 Canvas-Based Game Engine but I noticed the performance wasn't very good. So a lot of people suggested only rendering things that are shown by the camera but ...
1
vote
1answer
165 views

How do I keep user input and rendering independent of the implementation environment?

I'm writing a Tetris clone in JavaScript. I have a fair amount of experience in programming in general, but am rather new to game development. I want to separate the core game code from the code that ...
3
votes
1answer
714 views

Validating multiplayer actions when using Javascript Game Engines client-side

I am using one of the many javascript game engine (impactjs, craftyjs, melonjs, easeljs etc) out there to handle the animation client-side. And I have a way of calling server-side functions and ...
3
votes
2answers
163 views

Deactivate keyboard input on collision

I'm creating an online-canvas-game with a tank as player object. Now I have several structures in my canvas, that shouldn't be able to be overdriven by the tank... My solution is to detect the ...
-1
votes
0answers
67 views

ball 2d animation [duplicate]

Possible Duplicate: canvas ball physics animation I want to animate ball in html canvas like this. ctx.beginPath(); ctx.arc(75, 75, 10, 0, Math.PI*2, true); ctx.closePath(); ctx.fill(); ...
4
votes
2answers
2k views

canvas ball physics animation

I want to animate ball in html canvas like this. ctx.beginPath(); ctx.arc(75, 75, 10, 0, Math.PI*2, true); ctx.closePath(); ctx.fill(); start position is left top corner and ball's maximum ...
-5
votes
2answers
2k views

HTML5 Canvas game viewport

How to create in HTML5 canvas viewport? something like for tile maps.
1
vote
0answers
827 views

How to turn a 3d camera (in HTML5 2D Canvas)

A few years back I started experimenting with 3d in canvas. Everything went pretty well untill I had to to turn the camera, I couldn't get it done. A few days back I just happened to stumble upon ...
2
votes
2answers
4k views

Creating an object in javascript with unity (unityscript)

So I have a ton of experience with JavaScript (its what I do for a living) but I am new to unity. I have built a game engine in javascript but now want to move it over to unity. I have been trying to ...
1
vote
2answers
566 views

How is JS source protected in Chrome games?

I was playing a space arcade shooter https://moonbreakers.com/ and tried to see some of the JS and shader code. However, I was unable to find anything but some server communication code. Game code is ...
0
votes
1answer
499 views

3d js map rendering

In the past I've done a 2D tile map using HTML, CSS and Javascript. Now I have the task of creating a 3D version using the same technologies - think of it like a space map where all planets have x/y/z ...
1
vote
1answer
797 views

Converting coordinate systems to/from an isometric game world

I have tried searching and reading for an answer, but the information I could dig up either didn't fit what I need or was in the form akin to "Just multiply the vectors with the inverse matrix of.." ...
0
votes
1answer
954 views

How to display a tile map from a 2D array in JavaScript?

I have stored my map, but the problem I am having is displaying it. My map is 100x100 tiles which are 40x40px. I have my loop running through the array but I'm having difficulty selecting the portion ...
3
votes
1answer
1k views

Shoot a bullet towards cursor - top down 2d

I am making a 2D topdown shooter game, in which the player's movement is controlled with WASD and gun with the mouse. I'm having a hard time figuring out how to update the position of the bullet as it ...
-4
votes
2answers
198 views

What is the first game I should Develop? [closed]

What is the first game every developer should develop?
5
votes
2answers
693 views

Web-based micro-transaction API

I am currently making a browser-based game and I would like to integrate micro-transactions. However I would prefer not to have to implement my own storefront. Does anyone know of an available ...