HTML 5 refers to new web technologies such as high performance JavaScript engines, canvas 2D and WebGL, video and audio tags.

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0answers
14 views

How should browser based muiltiplayer game state be syncronized using WebSockets and a Node.js backend?

I'm in the process of learning how to create browser based html5 games. I'd like to eventually be able to achieve a game with mechanics very similar to that of the game agar.io. I've been observing ...
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2answers
77 views

Why does player still leave map?

I'm making a simple HTML5 RPG in pure JavaScript likened after Nox, Diablo or Titan Quest, with the character centered on the screen and the map moving around it. TL;DR: My character, when colliding ...
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2answers
31 views

2d mmo open world connection and reconnection

I am trying to create an 2d html5 open word (the sprite does not have any fancy flare, just shapes around) with only maximum of 10 player at once. My question is how to create a seamless join for new ...
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1answer
4k views

HTML5 - Dynamic canvas grid for scrolling a big map

I've been working on different scrolling algorithms for my JS-based game. My main problem is that I need to draw a huge map and also have it scroll smoothly. I've made a few attempts and while they're ...
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2answers
167 views

Collision detection between draggable object and world objects?

I have a game I'm making in Javascript that will involve combining items by dragging and dropping them onto each other. Think Alchemy or similar. So far, so good, but I hit a snag while trying to ...
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1answer
72 views

handling wars in multiplayer browser game [closed]

I'm building a browser game about countries, cities, the user control his city, building it upgrading it, can fight other cities in the same country, elections and war between countries, peace, trade ...
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1answer
42 views

Call a native mobile API in Construct 2?

It is possible to use mobile api features in a Construct 2 game (html 5 / js engine) ? I didn't find anything about that on the net, unlike anothers game frameworks like Corona Entreprise or ...
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1answer
36 views

Tiled - move all tiles

I'm making a map in Tiled. I quickly ran out of room in the north of my map and would like to "shift" the tiles down. I'd prefer not to have to redo each of the tile layers. Is this possible? This ...
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2answers
378 views

Is there a way to use scala with html5?

I want to create a very simple 2d multiplayer browsergame in html5. Something like Scalatron I mainly want to do this to improve my scala skills, the problem is I would have to code the clientside ...
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0answers
25 views

touch mouseOver in createjs - DispatchEvent() not working in iPhone/iOS

I have recently developed an html5 game using createjs and I am currently in the testing phase. The game seems to work fine in all the devices except for the iPhone. After careful analysis I have come ...
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1answer
37 views

Why can't CSS Sprites handle vectors?

Almost all the documentation available either says that "sprites are bitmaps" or that "css sprites must be bitmaps". Is there a specific reason for this? Is it, in fact possible to create a css sprite ...
3
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1answer
178 views

Roguelike 2D Collision Detection

I'm just a normal guy trying to do some basic collision detection but I suck at it. I either get stuck in a wall or I go in reverse in the wrong direction trying to update the player position to a non ...
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1answer
23 views

Java-script map/array “undefined” [closed]

Hi when I call the the function below in the chrome console it tells me "Type error cannot read property '2' of undefined" why?. defining the map: var map = { FALL:[ [0, 0, 0, 0, 0, 0, 0, 0, 0, ...
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1answer
130 views

How to “piece together” an image in code, to render later?

I want to make a game in Dart and have decided to use the available port of the JS Phaser game engine. This will be my first time really making a game involving graphics so I guess I'll have a lot to ...
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0answers
80 views

Card Masking in Phaser

Good Day, I'm new to Phaser and still learning about it to. I am challenging my self to create a simple animation of a card flip somewhat realistic rather that making use of a scale. This is ...
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2answers
64 views

HTML Multiplayer and Hiding Information

I'm in the process of conceiving a multiplayer web-based game of sorts and was looking into different ways of achieving this. Instead of using PHP/MySQL/AJAX like I'm used to, a lot of sites are ...
4
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5answers
318 views

How do I prevent receiving data from the network from dropping rendering frames in a multiplayer game?

I'm building an HTML5 massively multiplayer online game. I've been working on this project for awhile, but am having some trouble sorting through a couple of performance issues. Since this is a ...
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2answers
596 views

How do I make a sprite blink on an HTML5 canvas?

I'm thinking of the flashing effect many games have when a character gets hit and takes damage. Something like overlaying a lighter color on visible sprite pixels for a second.
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0answers
17 views

CocoonJS draws shadow around tiles

I am using CocoonJS launcher on iOS for a simple tiled game. Calling canvas drawImage for tiles adds a shadow or ghost border around tiles. See this screenshot: ...
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2answers
2k views

Efficient collision detection - tile based HTML5/Javascript game

I'm building a basic RPG game and I'm looking at collisions/pickups etc now. It's tile based and I'm using HTML5 and Javascript. I use a 2D array to create my tilemap. I'm currently using a switch ...
4
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2answers
983 views

HTML5 game fps render lag

I am currently creating a flappyBird-like HTML5 game using Proccessing.js You can see current work here: http://files.tips4design.com/flappySlothRelease/ The problem is that even though the FPS is ...
12
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7answers
9k views

To canvas, or not to canvas, when building browser-based games?

Background: I have extensive development background, but the last time I coded a game was many years ago. My Javascript skills are quite limited, and I intend to improve them by building a simple game ...
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1answer
74 views

How are CSS and WebGL coordinates related? [closed]

I'd like to build a simple framework which rendering combines web page DOM elements with WebGL, such that they're manipulable in the same coordinate space. How does the plain CSS coordinate system ...
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1answer
78 views

Centering camera on player div

I've been making a roguelike-style game in HTML5 without using canvas (only divs) with pure JS (fiddle!). I've been trying to enlarge the tile size (font size) while keeping the player centered within ...
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0answers
142 views

In Phaser, how should I be managing state? [closed]

I'm quite new to Phaser and JavaScript really confused about state management. Phaser has lots of documentation and info on the net, but everyone seems to be doing it a different way. An example: ...
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2answers
994 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 = ...
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2answers
212 views

Where to start developing a 2D puzzle game [closed]

I would like to start developing a 2D puzzle games, much like sudoku for example. I would like to publish it on Facebook and on gaming websites, like miniclip, agame, kongregate. The game should have ...
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2answers
333 views

How do you capture keyboard and mouse input for an HTML5 game?

Is there an accepted method for capturing player input in HTML5 games? I have seen several methods, and the browsers seem to be in varying states of implementation; On MDN they tell you not to use ...
2
votes
1answer
141 views

How to implement user friendly screen panning on 3D HTML canvas for RTS game

How can I get RTS map panning like how it was done in C&C red alert (with the mouse at the edge of the screen moves the screen in that direction) with a Babylon.js RTS game in the html canvas? ...
2
votes
1answer
197 views

How can I create 2D, sprite-based reflections in HTML5 Canvas?

I'm trying to create simple reflections in a 2D, sprite-based game using HTML5. I'm looking to recreate an effect like the one you'd often see in GBA games, such as Pokemon Emerald and Mother 3: ...
2
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2answers
568 views

IsoMetric Map draw: sort with Topological Sort, Z-Buffer and anchor point

I'm writing an IsoMetric renderer for my html5 isometric game. The isometric renderer should be able to render objects with floating point coordinates. DEMO: http://matt93.altervista.org/game/ ...
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1answer
377 views

Rotate arrow on canvas

I need to draw a flow dynamically based on some user choices. In that flow I want to draw the choices (blue circles with number) and the directions of that choices (line and arrow). For example: node ...
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4answers
6k views

Best technique for drawing isometric tiles

I'm thinking about making a simple isometric game with HTML5 Canvas, and wondering what's the fastest way to render the tiles. Since the tiles are diamond shaped, but drawImage draws rectangles, I ...
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5answers
5k views

Poor performance in android when running APK, runs fine in browser

I have created a small game project in HTML5 using Phaser engine (tried both 1.1.5 and 1.1.6). Then to port it to mobile platform, used Phonegap/Cordova for Windows Phone 8, Android and iOS. In my ...
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0answers
120 views

HTML5 game : Secure way of saving score [duplicate]

I wrote a pretty basic game for colleagues to play : the player shoots on an enemy which has 50 lives while other smaller enemies pop randomly on the screen. The goal is to kill the main enemy as fast ...
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1answer
136 views

Algorithms for positioning rectangles evenly spaced with unknown connecting lines

I'm new to game development, but I'm trying to figure out a good algorithm for positioning rectangles (of any width and height) in a given surface area, and connecting them with any variation of ...
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1answer
290 views

How do I add my phaser.js game to my pre-made web page?

First off, it's my first time doing a little bit of game development, and I have no idea of the normal flow of making a game, let alone a browser game. My game uses the phaser framework of HTML and ...
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0answers
211 views

A problem with collision when a sprite changes size (Phaser framework) [closed]

I have a sprite in my game that changes size at certain points in the game. It changes size via the sprite.body.setSize method. Unfortunately, it seems that the sprite is unaffected by objects that it ...
3
votes
2answers
408 views

How do I make a scrolling map within an HTML5 canvas?

My project is a 2D tactics game with a square grid. It's all HTML5/Javascript/JQuery. I have been able to draw out the grid and have a system where I can load different maps with tiles where units ...
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0answers
235 views

Phaser noob: Why is my Phaser game jittery? [closed]

I'm just getting started with HTML5 game development, and I'm very impressed with the quality of Run Pixie Run and bunnymark in both desktop and mobile, so I've started making a game using Phaser ...
0
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1answer
247 views

No sound in android using Phaser [closed]

I have developed a simple game using Phaser. It's work perfect on ios webkit, but on android there is no sound. What causes this problem on one platform but not the other? We are using this code to ...
1
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0answers
257 views

Creating Top-Down Race Track From A List Of 2D Points [duplicate]

My final year project for university is based on the idea that a two-dimensional top-down multiplayer racing game can be made using Google Maps to dynamically generate race tracks. The idea is that ...
4
votes
4answers
5k views

Open source level editor for HTML5 platform game? [closed]

A natty GUI editor is very helpful to create level map. I want to use some open-source choices rather than build my own from scratch. I found Tiled Map Editor but it doesn't work for what I want. ...
0
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1answer
97 views

Set a different animation rate for moving player NOT using a sprite

I am trying to start making a simple game using HTML5 with a canvas and some JS. I have a player whose movement I am comfortable with, but the rate at which the player animates when it moves is too ...
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0answers
159 views

Shadows in html5 canvas game

I'd like to ask for reference. I met an article about how to cast shadows in games. I'm using html5 canvas (currently without webgl) with javascript for my projects. The article mentioned above is ...
0
votes
1answer
124 views

How do I cut off the edge of an image in a 2D JavaScript Array?

OK, I am trying to make a game that is a little bit like SimTower but utilizing HTML5 (particularly the canvas element) and JavaScript with a little CSS. I have ran into a couple of little problems ...
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2answers
117 views

How to access bottom canvas layer in HTML?

I have such html: <div id="main_window"> <canvas id="canvas_hex_logic" width="200" height="100"></canvas> <canvas id="canvas_ground" width="200" height="100"></canvas> ...
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0answers
205 views

Simple track method for 2D car game? [closed]

I'm a new programmer and I am trying to make a 2D car game on an html5 canvas with javascript and JQuery. I have got the basic car motion down, check it out here: ...
7
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2answers
3k views

Displaying a particular sprite from spritesheet using Phaser

I am trying to make a card game using Phaser, the HTML5 JS framework. Because I'm a terrible artist and can't design my own, I'm using a free spritesheet of playing card images I found online. The ...
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4answers
4k views

How to bundle a HTML5 JavaScript game as native Windows application?

As the web browsers evolve, HTML5 game development with JavaScript, Canvas, webgl is increasingly becoming popular. The advantage of web-based games compared to native apps is that they run on ...