"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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2
votes
1answer
127 views

Stop music in crafty.js

How do I stop a looping music file from playing in crafty.js? I want the music to stop playing once a gameover condition has been reached.
-1
votes
1answer
327 views

View port for my canvas game

I am developing a canvas game, and im struggling to get my head around how i can make a view port so when the character moves the world moves with it. Unlike traditional 2d maps built with arrays i ...
2
votes
1answer
474 views

JavaScript - 2D Top-down Tile Collision Detection

I am developing a small Top-down Game (Much like the old Zelda Games) and I'm having an issue in terms of Collision detection (The actual theory itself rather than assigning Tiles as solid, etc.) I ...
0
votes
1answer
658 views

How do I make an entity move once per second in crafty.js

I am trying to implement "Snake" using crafty.js but I can't seem to get the snake entity to move just once in a second. How do I do this?
2
votes
2answers
197 views

Animating a background 'pulse' with easing equation

I'm trying to find a suitable easing equation (or other method) to animate an object so that it 'pulses' (imagine a 'spike' on a music visualiser, or see the image I drew badly below) 'v' is the ...
1
vote
0answers
130 views

Is there an out-of-the-box way to create a custom non-convex polygon in three.js?

Does Three.js offer an out-of-the-box way to create custom non-convex polygon, or do I have to use THREE.Geometry and set faces manually? I'm guessing that ShapeGeometry has something to do with this, ...
4
votes
1answer
442 views

Working principle of an RPG map

I am currently thinking of building a basic browser-based 2D(that would eventually become 2.5D) RPG. I have planned everything and I think that would be able to accomplish the current goals, but it ...
1
vote
1answer
219 views

Simple 3D particle gravity in javascript? [closed]

I'm trying to do some simple gravity handling in my 3D environment (I'm using three.js). I've got some code, but it doesn't work. I'm hoping it's just a silly bug somewhere. Note: This is a ...
3
votes
3answers
326 views

Javascript board game: looking for optimization

I posted this question on stackoverflow before but received no answers so I decided to post it here and see if someone could suggest me something. I'm working on a html/javascript game for android. ...
8
votes
5answers
1k views

Good technological solutions to build an ascii map and moving characters in a browser (like dwarf fortress)? [closed]

I'd like to build a webapp for my game website that involves using text characters to represent animals and people, and have them move around on map squares with independent (server driven) AI. So ...
5
votes
3answers
439 views

Can “dumbphones” play JavaScript games?

Are JavaScript games exclusive to modern smartphones, or are older phone models also able to play games written in JavaScript?
0
votes
2answers
177 views

Smoothing a shot power curve

I'm making a game with shot powers (user presses and holds and launches an object) Distance from the cursor was working for testing but obviously a distance of 1 and 2 pixels is double. I scaled this ...
0
votes
2answers
2k views

Moving a sprite towards an x and y coordinate

Given a sprite with an x and y coordinate, how would I move it toward another sprite with an x and y coordinate? I've already made it face towards the other sprite, and I've made it move towards the ...
-1
votes
1answer
75 views

Isometric Error: decrement iteration removes tiles [closed]

I am new to isometric and game programming in general. Just cannot figure out how to iterate the grid from behind. I want to do it so that the tiles overlap properly. My grid starts at [0][0] which ...
0
votes
1answer
2k views

Simple javascript HTML5 canvas start menu

I'm currently looking for a simple and basic start screen for a game using javascript, so basically its the first function that is called and then press play which then goes into the game. Looked ...
-1
votes
2answers
342 views

Compare Mouse X,Y with Grid X,Y to find the closest grid position [closed]

EDIT: From two very good answers I have decided to use isometric projection instead of my silly grid of cordinates. I am doing a game entirely in canvas, and I find it quite troublesome right now. I ...
2
votes
1answer
237 views

Optimising out tiles outside of viewport

I am playing around with the HTML5 canvas and have begun implementing a tile engine. However, it's currently very inefficient: I have a 100x100 2D array and my code loops through the whole thing ...
0
votes
2answers
201 views

How can I get a property of an entity without having to call getEntityByType every time?

I'm trying to get an entity (a bullet, a grenade, and an explosive) from my player. Specifically, I want the shootingRate of my bullet (how frequently it can be fired). How can I do this without ...
8
votes
3answers
274 views

Y and X - Am I doing it wrong?

I sometimes run into small issues when doing my JavaScript projects. That is because most build in functions of JavaScript run X,Y if positions are needed. (In that order). But when I build a 2D ...
1
vote
2answers
556 views

Dynamic Textures

I am pretty new to this 3D designing and animating, and as an indie developer I need to do everything on my own I have created this simple box character And I want to texture it, have looked around ...
0
votes
2answers
462 views

Increasing speed of circle over time as linear with Box2d

Assume that there is a circle and it can be moved by using keyboard arrows.Is required that increasing speed over time like increasing car speed. For example; max speed is 25 and time to reach max ...
3
votes
2answers
466 views

Are javascript MVC model implementations too slow for games?

I wanted to implement a game in javascript with an MVC design pattern, with each entity's state stored in a model. So for example, In an update loop we iterate over all models and apply the velocity ...
4
votes
2answers
606 views

Simulate forces on a connected chain

I'm building a 2D space game where the player uses a chain to grab on to nearby asteroids. The asteroids move along a specific path with a constant velocity. The chain has a maximum length L and ...
6
votes
3answers
399 views

How can I change the acceleration of an object to arrive at a particular time?

I'm trying to write some code to change an acceleration factor so a ball will arrive at a destination in a desired time. The problem is I don't know time (t) but I do know I want it to arrive at (t - ...
2
votes
2answers
2k views

Receiving keyboard events on a canvas in Javascript

I need to receive keyboard events in a canvas element. Click events are received but key presses aren't. Here is my code which doesn't handle key events: var canvasElm = $('canvas'); ...
2
votes
2answers
543 views

How to make a Unity3d program/plugin and publish it on Asset Store?

I want to make a plugin for Unity3d, like TornadoTwins's FPS Control. How can I do that? I already have Visual Studio 2010 installed.
1
vote
2answers
319 views

Mega Man screen scrolling in JavaScript [duplicate]

I'm trying to create screen transitions similar to those found in Mega Man or Legend of Zelda (i.e. the active elements of the first screen are stopped as the screen scrolls in the direction of the ...
-1
votes
2answers
89 views

When I create more than one boundary, every one but the most recent breaks [closed]

So basically what I have is a function called createBoxBoundary, which, when the player position is within certain limits, sets boundary variables to true. Pretty straightforward. However, when I call ...
5
votes
2answers
824 views

Get timing correct with client side prediction

I believe I've got my head round CSP after reading Gabriel Gambetta's blog, Valve article and buildnewgames.com but having an issue understanding the time execution of everything. So if a player ...
-1
votes
2answers
702 views

Javascript - create a new bullet instance every time a user event is triggered

Basically I have a function that I need to create an object of every time the user presses space(event listeners not shown here). function arrow(){ this.x = playerXPos + 40; this.y = ...
1
vote
1answer
376 views

2D js physics engine for HTML4

Is there any engine for Javascript like box2dweb that does not use Canvas? I need to build a game that works in HTML4 browsers.
1
vote
2answers
542 views

PHP and Javascript/HTML5 Collaboration [closed]

I've recently been working on a fairly complicated game. I've stored information with local storage, but that allows the player to edit it, and does not transfer from computer to computer. The two ...
8
votes
3answers
763 views

Saving roguelike game state?

I'm working on a basic roguelike using HTML5 and jQuery, and I've come across a problem. The way the game currently stands, the system only saves the game state every time the user moves between ...
1
vote
4answers
275 views

A formula for point calculation based on value A's proximity to value B

I am trying to find a formula to use for my rhythm game's scoring. Basically there is a Guide entity and a Live entity. You control the Live entity and have to match it as closely as possible to a ...
1
vote
1answer
141 views

Increase restitution (bounciness) of an object in a JavaScript formula

I'm going slightly around the houses on this one. I originally started a thread over on Stack Overflow about it but then it seemed to diverge into mathematics, with no joy from the SO community over ...
2
votes
2answers
466 views

How do I calculate consistent frame timings at 60fps?

I'm writing an HTML canvas game that uses requestAnimationFrame and therefore runs at 60fps, although this is more of a question about failing arithmetic than about JavaScript. If I measure the time ...
1
vote
1answer
602 views

PNG image as a level map for 2d game

I've been using a tilemap editor for making levels, but I was wondering if there was a way to use PNG images as the level map, as maps created in tiled editor are graphically uninteresting. ...
6
votes
3answers
963 views

Basic isometric projection in Javascript

I've been working on porting an old closed source game to Javascript with Canvas and I've come to a slight problem. Right now, to display the land, I just have a pretty basic loop that just draws the ...
1
vote
2answers
1k views

How do I generate a 2d grid-based map without screwing it up?

I'm relatively new to the mechanics of game development - catching up fast, but there are still some things that escape me. For example: generating a fully-accessible map on a 2d grid. See the ...
2
votes
3answers
184 views

Instantiate objects that share same variable

I'm just wondering how to instantiate the same objects that all share the same variables, except their positions. I'm basically working on the scene of my HTML5 game, and I've build a streetlamp post ...
2
votes
2answers
398 views

Best way to store NPCs, Monsters, Shops, etc for JavaScript game? [closed]

OK, let's say I have a JavaScript game (preferably on jQuery framework) and its using HTML5 Canvas. What would be your way of storing data to map out shops, monsters, and NPCs? I was thinking maybe ...
0
votes
1answer
380 views

Saving Scores Using Cookies

I've recently created a small galiga like game recently using JavaScript and HTML5. I've run into a bit of trouble saving cookies, the cookie saves, but then resets itself when the page is refreshed, ...
-2
votes
1answer
81 views

Why do I get “Undefined” only on the “Vertical” Grid? [closed]

Problem: When I get to the end of the Grid it gives me an Error :-/ The X axis is fine, the problems occur then I move "over the end" of TOP and BOTTOM. This code works: if(new_data[1] == ...
5
votes
1answer
757 views

box2d with lines

I have a very simple platform game builder and I've specified the ceilings, walls and floor as line segments. A line has a winding, or normal; you can determine the direction that a line should be ...
5
votes
1answer
940 views

Canvas animation drops to 30fps every 3-4 seconds

Ok! I solved the problem. Chapter One - Multiple Canvases I started to make pong utilizing requestAnimationFrame and I noticed that the ball was stuttering and slowing down every 3-4 seconds. So I ...
2
votes
2answers
208 views

Approaches for storing grid-like information

I am drawing this simple grid on my NodeJS server: var grid = []; for(var x = 0; x < 20; x++){ grid[x] = []; for(var y = 0; y < 20; y++){ grid[x][y] = 0; } } ...
1
vote
2answers
1k views

How to make an infinite map

I was wondering if someone could explain to me how to implement a seemingly dynamic infinite map like the one at http://wordsquared.com/ My main issue is really generating new tiles in any direction ...
2
votes
1answer
325 views

mat3x4 in webGL shaders

I am porting the IQM bone animation format to Javascript and have run into a problem... The vertex shader is failing to compile and the only error message I get out is 'mat3x4' : syntax error on the ...
0
votes
1answer
328 views

Player movement behind objects

I was playing around on RPG JS and Browser Quest, and the player, when moving, can give the effect of walking behind the trees or houses etc, so the player effectively disappears while it is "behind" ...
-5
votes
2answers
587 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 ...