"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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5
votes
3answers
1k views

HTML5 game programming style [closed]

I am currently trying learn javascript in form of HTML5 games. Stuff that I've done so far isn't too fancy since I'm still a beginner. My biggest concern so far has been that I don't really know what ...
4
votes
2answers
278 views

Will setInterval give me Delay?

I am setting up a JavaScript Server for my Game. Am I understanding this correctly: If I use setInterval to call a function every second, and takes 2 seconds to process. Then I am going to "stack ...
2
votes
1answer
174 views

How to handle shoot instructions, in a multiplayer TD

I'm currently working on a Multiplayer Tower Defense game, using ImpactJS & Node. I seek some clarification about how to handle projectiles from towers, let me explain. So the server is running ...
1
vote
1answer
921 views

javascript game loop and game update design

There is a main game loop in my program, which calls game update every frame. However, to make better animation and better control, there is a need to implement a function like updateEveryNFrames(n, ...
2
votes
1answer
216 views

Send less Server Data with “AFK”

I am working on a 2D (Realtime) MultiPlayer Game. With Construct2 and a Socket.IO JavaScript Server. Right now the code does not include the Array for each Player. var io = ...
-1
votes
1answer
2k views

HTML Javascript Hidden Object or Photo Hunt Game

Is anyone aware of any example photo hunt/hidden object games either in HTML and Javascript or flash if necessary? I am having trouble finding one, I may be using the wrong words to search. Photo ...
-1
votes
1answer
562 views

Attach my sprite with Box2d [closed]

I'm coding Javascript(HTML5) with Box2D. And I want to ask how to attach Sprite with Box2D. This is function My sprite: function My_Sprite() { this.m_Image = new Image(); this.m_Position = ...
9
votes
5answers
3k views

How do I protect sending scores from HTML5 games to my server

On backend I am using java. I have a game in HTML5; when user completes it I sends an Ajax call to save the score to database. Now, someone can easily use tools like Fiddler and firebug to modify this ...
2
votes
1answer
2k views

Specifying force and angle in ApplyImpulse in box2d

I need to apply an impulse on a object with a particular force and at a particular angle in Box2d. If I am right the syntax would be the following: body.GetBody().ApplyImpulse(new ...
2
votes
2answers
5k views

Rotate sphere in Javascript / three.js while moving along x/z plane

I have a sphere/ball in three.js which I want to "roll" around on the x/z plane. For the z axis I could simply do this no matter what the current x and y rotation is: sphere.roll_z = ...
-2
votes
2answers
78 views

canvas graphic output doesn't work [closed]

at the moment i'm developing a 3D-Vector-Coordinates-to-2D-Canvas-Calculation. the code is ready, the canvas too, but something doesn't work right... You can find my code at ...
1
vote
1answer
302 views

Recreating Doodle Jump in Canvas - Platforms spawning out of reach

I have started to recreate Doodle Jump in HTML using Canvas. Here's my current progress. As you can see, if you play it for a few seconds, some platforms will be out of the player's reach. I don't ...
1
vote
1answer
549 views

WebGL: Texture appears as black

I have a simple WebGL canvas, where I'm attempting to render a texture on a square. When working with textures as local files, all is fine. But when I try to load a texture from the web, I get a black ...
-2
votes
2answers
240 views

Should I use javascript to make a windows 8 game? [closed]

Windows 8 game development is designed mainly for C++ (which I don't know), but can be done in JS (which I do know). Is it worth it to learn C++ or should I continue with JS?
3
votes
1answer
272 views

Game based on Ajax polling for 12 players

I am planning on writing a small browser game. The webserver is a shared server, with no root / install possible. I want to use AJAX for client/server communication. There will be 12 players. So ...
3
votes
2answers
3k views

Smooth animation on a persistently refreshing canvas

Yo everyone! I have been working on an Isometric Tile Game Engine in HTML5/Canvas for a little while now and I have a complete working game. Earlier today I looked back over my code and thought: ...
0
votes
1answer
420 views

creating a simulation game, what type of knowledge is needed? [closed]

I am a beginner in game development. As a part of learning and fun, want to create a game in java-script and html5. I am planning a game that we were used to play in childhood, that is "new business"- ...
-1
votes
1answer
381 views

Using copyrighted sprites [duplicate]

Possible Duplicate: How closely can a game resemble another game without legal problems I was thinking about making a pacman clone, I know there is a similar question here Using Copyrighted ...
8
votes
1answer
2k views

Depth interpolation for z-buffer, with scanline

I have to write my own software 3d rasterizer, and so far I am able to project my 3d model made of triangles into 2d space: I rotate, translate and project my points to get a 2d space representation ...
3
votes
3answers
692 views

Semi Fixed-timestep ported to javascript

In Gaffer's "Fix Your Timestep!" article, the author explains how to free your physics' loop from the paint one. Here is the final code, written in C: double t = 0.0; const double dt = 0.01; double ...
5
votes
1answer
1k views

Javascript Canvas Drawing Efficiency

I have just recently started some experiments with game development in Javascript/HTML5, and so far it has been going pretty well. I have a simple test scene running with some basic input handling, ...
3
votes
2answers
7k views

HTML5 - check if font has loaded

At present I load my font for my game in with @font-face For instance: @font-face { font-family: 'Orbitron'; src: url('res/orbitron-medium.ttf'); } and then reference it throughout my JS ...
2
votes
0answers
81 views

How to work with edge Texture [duplicate]

Im not sure if i use the right terms, but im not able to find something to start with. Im trying to develop a little HTML5 game. I have a ground with a texture and now I want to make a surrounding ...
2
votes
3answers
289 views

General directions on developing a server side control system for JS/Canvas Action RPG

Well, yesterday I asked on anti-cheat JS, and confirmed what I kind of already knew that it's just not possible. Now I wanna measure roughly how hard it is to implement a server side checking that is ...
24
votes
6answers
5k views

Anti-cheat Javascript for browser/HTML5 game

I'm planning on venturing on making a single player action rpg in js/html5, and I'd like to prevent cheating. I don't need 100% protection, since it's not going to be a multiplayer game, but I want ...
2
votes
1answer
2k views

Unity3d - setting gameobject position by percentage of view

I am having trouble finding a way to set a gameobject's position with regards to the screen size. I am building a 2d game that I will be putting on iPhone, iPad, and Android. I need to be able to set ...
0
votes
3answers
288 views

Buffer System For Items

I am going to reference this image of what I want to accomplish in JavaScript. This is the Diablo buffer system. This question may be a bit advanced (or possibly not even allowed). But I was ...
1
vote
1answer
2k views

Crafty.js multiplayer platform game, keeping players in sync

I'm using crafty.js to create a very simple platform game. It doesn't need to stop cheating, it's actually just seeing other players move around, and it doesn't need to have collision detection ...
-2
votes
1answer
571 views

Direction of the bullet - how to have something else than left, right, top, bottom

I'm making a simple shooter game using canvas and javascript. The current code can be seen here. To know which way I want the bullet to be shot, I simply have a direction property that can have 4 ...
1
vote
2answers
5k views

How to handle 3D collisions using raycasting (with a reflection vector?)

I'm making a game using THREE.JS, and I want my character to walk on the terrain, and collide with static 3D objects (=AABB boxes) that are on that terrain. The problem is: THREE.JS has only a ...
-4
votes
1answer
321 views

MasterMind Game Algorithm Problem [closed]

Please find below the code that I use to make a MasterMind like game. For now people can see the PC selection so I can check if my algorithm works. Further more colors are only as visual part and ...
1
vote
2answers
138 views

Including sprite file for mobile games

I'm making a simple online RPG for Android & IOS using HTML5 & Phonegap and was wondering: should I include sprite file with the game for downloads (because of bandwidth)? What should I do ...
15
votes
7answers
4k views

How does one optimize an HTML5 Canvas and JavaScript web application for Mobile Safari?

I've created an HTML5 Canvas and JS game that runs great on a desktop or laptop in Chrome (30fps), but on mobile Safari I only get around 8 fps. Are there any simple tips or tricks to increase the ...
0
votes
2answers
1k views

Calculating angle between two vectors to steer towards a target

I have been trying to implement a path following steering behaviour for AI in a 2D racing game. I have two vectors: futurePosition represents the predicted future position given the car's current ...
2
votes
1answer
486 views

Is Javascript ready for game development?

I'm hearing about the new HTML 5 features which allow graphics to be rendered, audio to be played, etc. My question is, does that mean Javascript is ready for a graphics intensive game, or is the ...
0
votes
2answers
542 views

Platformer movement and collisions

I'm working on a platformer but I'm stuck at the player movement and collisions. Right now I'm not including the grid at all in the movement, but it's time I do it. I've read this article on how to ...
2
votes
2answers
304 views

How can my “world” provide the information required to render itself?

I am writing a JavaScript game that provides a top down view of the player, to eventually create a ray caster that can render the view in faux 3D (the top down view will end up as the mini-map). A ...
-1
votes
2answers
202 views

Dealing with new animations in html5

Wish I knew of a better title, but the issue is rather specific. So the producer of the game I'm working on has given me new animations to put in the game. I knew there might be issues right off when ...
1
vote
1answer
381 views

Collision within a poly

For an html5 engine I'm making, for speed I'm using a path poly. I'm having trouble trying to find ways to get collision with the walls of the poly. To make it simple I just have a vector for the ...
1
vote
1answer
650 views

User input in game loop

I am building a simple multi-player fly-around-a-3D-world game in Javascript/webGL/websocket (Chrome, Firefox mostly). How should I handle and process user input? My preliminary design (untested) is ...
4
votes
2answers
442 views

Where and how to promote an HTML5 game engine?

I've recently completed an engine, called Irenic. Now, I was wondering, how could one promote it? The process surely is different than promoting a game, because a game can be played by almost anyone, ...
2
votes
1answer
586 views

Detect mouse click on a bezier curve's neighborhood

I'm developing a game in HTML5 and JavaScript using Canvas API for drawing graphics. I want to detect if the user has clicked on a bezier curve which has the line width of 20 pixels (something like ...
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 ...
17
votes
6answers
2k views

Essential knowledge for making HTML/JavaScript-based games [closed]

I was wondering if any experts out there could share the knowledge and resources of what is necessary to start making games with the latest HTML standards and JavaScript (or what some like to call ...
5
votes
2answers
1k views

How to implement AI for fighting game

I built a 2D fighter yesterday. The second 'player' does hardly anything. Actually, nothing. To be honest, I have never made a game before that had an opponent like this. So my question is, how ...
10
votes
3answers
5k views

Javascript and PHP for real-time multiplayer?

I'm wondering if combining Javascript clientside with PHP/mysql serverside is a good idea for HTML5 real-time multiplayer (small scale) browser games? My technical knowledge is very limited, and even ...
-2
votes
1answer
1k views

Cocos2D game engine javascript is too slow on mobile

i developed a game using cocos2D javascript that works fine on web browsers but when i run it on mobile ( iPhone 4s , android nexus) the FPS was dropped to 20 - 22 on iPhone (max) how to optimize it ...
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 ...
2
votes
2answers
1k views

Javascript Isometric draw optimization

I'm having trouble with isometric tiles drawing. At the moment I got an array with the tiles i want to draw. And it all works fine until i increase the size of the array. Since I draw ALL tiles on ...
8
votes
2answers
2k views

Top down space game control problem

As the title suggests I'm developing a top down space game. I'm not looking to use newtonian physics with the player controlled ship. I'm trying to achieve a control scheme somewhat similar to that ...