"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
2answers
680 views

A* mouse movement javascript top-down game

Im trying to implement a* path finding for my character movement in my game. The game is written in javaScript along with jQuery in a canvas. I have read up on A* so i believe i understand what it ...
-1
votes
1answer
636 views

Framework to build scrollable map with item selection in JavaScript?

I need a mobile device to be able to scroll a large, static map image, and also be able to select PNG image "objects", like this: What would be the simplest method? HTML5, jQuery, Sencha Touch, or ...
-4
votes
2answers
218 views

enemy shooting towards FPS [closed]

WELL first of all I want you to see my game (its deployed on heroku cloud) : http://still-escarpment-3701.herokuapp.com (It takes almost 10 sec to load so please wait for couple of sec) I have ...
-1
votes
1answer
242 views

problem with bullets shooting in FPS game

Please check out my game here: http://still-escarpment-3701.herokuapp.com The problem is with shooting. The bullets keep on moving with the First person controller instead of moving from the same ...
1
vote
0answers
575 views

shader-based particle systems [closed]

I have a classic particle system where each particle is represented by a quad and, each time step, I move each particle. My target is webGL which means I don't have instancing, attribute divisors nor ...
23
votes
3answers
7k views

Double buffering on HTML5 Canvas game?

My simple canvas game seems to work fine on Chrome and FF on Mac/Linux. I haven't had chance to test it on smart phones or Windows environments yet. It doesn't use double buffering but I have seen ...
0
votes
1answer
1k views

Unity - Code is fine in the editor, has error on android

Right. Im running into some weird issue with android unity. I have this bit of code function OnTriggerStay (other : Collider) { if(die.GetComponent(DieScript).sideUp ==6 ...
0
votes
1answer
507 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 ...
0
votes
2answers
69 views

In an asynchronous server environment where player input and timed events modify data is using an in-memory array problematic?

So let's say I have a server running on node.js, and there is an array of player objects... At an interval, all of these player objects are looped and processed for events and changes that are based ...
32
votes
2answers
2k views

In a browser, is it best to use one huge spritesheet or many (10000) different PNG's?

I'm creating a game in jQuery, where I use about 10000 32x32 tiles. Until now, I have been using them all separately (no sprite sheet). An average map uses about 2000 tiles (sometimes re-used PNG's ...
-1
votes
1answer
476 views

Drawing polygons in 3D

I have recently been working on a 3D engine from scratch, using JavaScript and HTML5. I've successfully created lines (although slightly buggy) and points, but I can't figure out faces. My current ...
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 ...
-2
votes
1answer
162 views

How do I set an event off when player is on certain tile?

Here is the code I use to create and print my map to the canvas: var board = []; function loadMap(map) { if (map == 1) { return [ ...
0
votes
1answer
1k views

HTML5 platformer collision detection problem

I'm working on a 2D platformer game, and I'm having a lot of trouble with collision detection. I've looked trough some tutorials, questions asked here and Stackoverflow, but I guess I'm just too dumb ...
1
vote
1answer
224 views

Adapting Javascript game for mobile

I'm currently developing a Javascript web game for desktop users. It is a sort of tower-defense game that relies on mouse input only, developed on canvas using EaselJS. In the future, or perhaps ...
-1
votes
1answer
556 views

Camera game 2d Javascript using box2d

I'm cloningg, i'm doing camera 2d in angry bird game using javascript html5 game and box2d.js . I'm using context.translate(x,y) to move canvas, but i meet an error like this : many image of birds ...
1
vote
1answer
565 views

Architectural advice - websockets javascript/php integration

Myself and a friend have started making a game, he's likely to be using impact.js for the user interaction etc, but we need multiplayer functionality so some form of websockets for TCP connections ...
4
votes
1answer
421 views

Glenn Fiedler's fixed timestep with fake threads

I've implemented Glenn Fiedler's Fix Your Timestep! quite a few times in single-threaded games. Now I'm facing a different situation: I'm trying to do this in JavaScript. I know JS is ...
4
votes
1answer
120 views

How to detect whether an Object came to sleep at a specific position?

I'm currently writing a small game with box2dweb and I need some direction for this: I'm throwing a Box and have to hit a specific place and trigger an event when the object that's been thrown isn't ...
0
votes
1answer
124 views

Questions for QueryAABB

I'm currently having trouble getting my head around QueryAABB, and hope to find some answers here. The LowerBound of an AABB the upper-left corner (and vice versa). Why is that and what idea is ...
2
votes
1answer
3k views

HTML5 point and click adventure game code structure with CreateJS

I'm a programming beginner. I made a tiny one scene point and click adventure game to try to understand simple game logic and came up with this: CreateJS features prototypes for creating bitmap ...
0
votes
2answers
342 views

HTML5 as application for tablets?

I'm looking at creating a tablet application (iPad, Nexus, Surface...). I've heard it's possible to create it using HTML5 canvas. I was wondering if it was limited to canvas, if div/input/table can ...
2
votes
2answers
439 views

Help w/ iPad 1 performance for tile-based DOM Javascript game

I've made a 2D tile-based game with DOM/Javascript. For each level, the map data is loaded and parsed, then lots of tiles ( elements) are drawn onto a larger "map" element. The map is inside of a ...
15
votes
7answers
793 views

Do I need a Point and a Vector object? Or just using a Vector object to represent a Point is ok?

Structuring the components of an engine that I am developing along with a friend (learning purposes), I came to this doubt. Initially we had a Point constructor, like the following: var Point = ...
1
vote
3answers
709 views

OOP implementation of BUFFS and Stats. Suggestion

I am developing an MMORPG server using NodeJS. I am not sure how to implement Buffs, i mean, equipped objects or used skills have effects on the Player() which has many Stats(), some of them have a ...
2
votes
2answers
311 views

Stop a rotating object at a specified angle?

I'm working in JavaScript with HTML5 and the canvas. I have an object which is rotating at a certain speed, and I need the object's rotation to slow down gradually and the front of the object to stop ...
2
votes
3answers
942 views

Issues with shooting in a HTML5 platformer game

I'm coding a 2D sidescroller using only JavaScript and HTML5 canvas, and in my game I have two problems with shooting: 1) Player shoots continous stream of bullets. I want that player can shoot only ...
4
votes
5answers
2k views

2D Collision detection for Pinball Game

So far in previous games I have used simple 2D collision with boxes then checking at pixel level for a collision. If making a pinball game in nearly a lot of frames the ball will be in contact with a ...
0
votes
1answer
611 views

how to devise a scoring algorithm based on elapsed time and number of moves [closed]

I want to devise an score algo for my game. I want to award high scores to players who achieve the goal in minimum time and least number of moves. I did this but its not going correctly: var score = ...
2
votes
2answers
555 views

Making an interactive 2D map

So recently I have been working on a Legend of Zelda: A Link to the Past clone, and I am wondering how I could handle certain map interactions (like cutting grass, lifting rocks, etc). The way I am ...
7
votes
1answer
369 views

Javascript keyDown - no event approach

I'm making game in JavaScript. I have canvas for drawings and game loop. I'd like to make method readKeyboard, in game loop, to check if there is any pressed key. I don't want to attach event to ...
6
votes
2answers
1k views

UV texture mapping with perspective correct interpolation

I am working on a software rasterizer for educational purposes and I am having issues with the texturing. The problem is, only one face of the cube gets correctly textured. The rest are stretched ...
2
votes
1answer
1k views

Making a Photo Hunt Game using Javascript and HTML5 [closed]

I am looking for a way to make a photo hunt game using HTML5 and Javascript. Where should I start after the images. And How would I make clickable areas on the image, using javascript? If you know of ...
5
votes
2answers
5k views

Box2dWeb and Images

How do I import and attach a PNG or GIF to a shape in Box2dWeb? The best resource I could find online is at: http://www.jeremyhubble.com/box2d.html However, this "tutorial" doesn't give much ...
2
votes
1answer
631 views

Object detection in bitmap JavaScript canvas

I want to detect clicks on canvas elements which are drawn using paths. So far I have stored element paths in a JavaScript data structure and then check the coordinates of hits which match the ...
0
votes
1answer
160 views

Basic Use of ApplyImpulse

I am trying to apply a force to a bunch of b2_dynamicBodys, but it seems to only work for a random number of items and then stops with an error. //create some items to move bodyDef.type = ...
8
votes
5answers
586 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 ...
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
295 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
176 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
931 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
219 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
3k 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
576 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
303 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
591 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 ...