Questions tagged [html5]

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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50 views

Should I use HTML5 canvas for a 2d image browser game / app?

Ok, I hope this hasn't been asked, but I could not find one, especially nothing recent. Quick Background: I've been away from programming for a couple of years and dusted off an old project to create ...
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0answers
34 views

Abstraction for dialogue and quests in web game

I'm not very experienced with web languages, but I know a little bit of JavaScript. I'm working on creating a text-based rpg in HTML and need a way to modify dialogues for main story or quest ...
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12 views

Unity Help solving Uncaught Abort on HTML5 Build

For some reason there is a Invoke that is triggered when a button is clicked that causes my game to crash. Any idea how I can sort this out? I have plenty other Invokes and none has given problems. I ...
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20 views

object position handling for multiplayer a game

I am creating a multiplayer HTML game which focuses on manipulating planet trajectories with gravity points. I am creating bunch of planets with random initial velocity and random direction and i am ...
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0answers
36 views

Car physics: incorporating lateral forces for high-speed steering

I'm making a car simulation in Javascript and I am using this website to help me with the physics: http://www.asawicki.info/Mirror/Car%20Physics%20for%20Games/Car%20Physics%20for%20Games.html The ...
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79 views

Moving player one tile at a time (Javascript)

I've been watching this tutorial and found the code works flawlessly. Although, there is something he doesn't cover in the video. How to move the player one tile at a time. Every tutorial I've found (...
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1answer
49 views

Using a setTimeout to Jump

I am trying to make a jump function. I am making a game in html5 canvas with Javascript. I have gotten the player to move. When making the jump function I decided to use a timeout to reverse the ...
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2answers
66 views

Select Neighboring X or Y Tiles

I have a randomly generated set of tiles, and I am trying to select neighboring x or y tiles to perform functions on them based on if they are a certain value of tile, like so: ...
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2answers
63 views

How to get projectile direction vector in a 2d grid?

I am having trouble figuring out how to trace the path of my projectiles in an Asteroids clone. Currently the ship is locked to the center of the screen and can be rotated a full 360 degrees. I know ...
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1answer
73 views

How do I rotate individual shapes on an html5 canvas?

So I am doing a basic Asteroids clone as an intro to HTML5 canvas. I want to be able to rotate the main player while leaving the other objects on screen alone. Currently I am using transform and ...
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0answers
50 views

Using dom elements for game interaction - slow performance

I have a need for my html5 game (using melonjs) to allow users to click tile areas on the map. The idea is it will show a css styled hover area. The browser tested is chrome. I could do this natively ...
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0answers
27 views

Generate spritesheets on the server or in the client browser?

I want to make a browser game (using HTML5-canvas) where the user can create their own character with different clothing and stuff. I want to use something like the Universal LPC Sprite Sheet set. ...
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0answers
80 views

libGDX/HTML5 game sounds doesn't work on iPhone

I have a libGDX/HTML5 project that works well on desktop browsers, but on mobile browsers it has problems. I can have some sounds on Android browsers (not perfect) but on iPhone browsers it doesn't ...
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0answers
242 views

How to Play YouTube Videos Within Asset Store for Unity

On every computer I've ever tried to use Unity, the Asset Store seems incapable of showing the YouTube video previews of assets. It always claims my "browser" does not currently recognize any of the ...
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1answer
41 views

Can a .exe file ported from a program like NW.js or Electron be put console stores?

I'm early in development working on a game in HTML5/JavaScript canvas, and I wondering if porting the game with some HTML/JS to .EXE converter would allowed it to be posted on consoles? I think it ...
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1answer
43 views

Is there a way to automatically group tiles in a A* pathfinding grid to find the largest areas?

I'm making an RTS game using html canvas. I've made a program that randomly generates levels in order to test my pathfinding script. it divides the pathable blocks into squares so that you can apply A*...
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1answer
43 views

Canvas Infinite Map: How to have reappearing objects at static X,Y even when looping

I made a html canvas example of an infinite scrolling map with objects in static places. As you can see in the Fiddle below, when you move left with the Arrow Keys, you can see that the map does not ...
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0answers
13 views

Crossword puzzle [duplicate]

How do you make the keyboard arrow keys interactive so that when the user presses one of these it will move the cursor in that direction; I am working in html. Thanks Angela Jackson
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1answer
88 views

What should i use as a board for my game? [closed]

I'm a beginning programmer and i need to make a game. The rough idea revolves around fleets fighting in turn based battles while you control your factions resources and manpower. The original concept ...
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1answer
678 views

Why are my animations flickering?

My animation is supposed to be used in my physics project I am making. I am using 10 millisecond setInterval() and setTimeout() ...
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4answers
171 views

How to improve load times of audio files without loosing too much quality for HTML5 game?

I'm creating an HTML5 game. We have high fidelity composed music, in the format of wavs and mp3s— some ...
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1answer
94 views

HTML5 game pases when you go to another tab

I'm making a simple game and I use requestAnimationFrame. Now the problem is that each I change to another tab the game pauses and when I return the game continues. ...
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2answers
124 views

Implementing multiplayer aspect of a simple HTML5 game

I've been thinking about this a lot. I am trying to implement a simple multiplayer game but I have difficulty figuring out how to "share the scene". For example, there are non-player entities like ...
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1answer
84 views

Why can't I load images in processing.js and let them be dynamic?

I can't easily load images. I can only render an image once unless I put this: <img src="images/papermario.png" hidden></img> in my html. I also still ...
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2answers
12k views

HTML5 games: play() failed because the user didn't interact with the document first

I'm creating an HTML5 game using MelonJS game engine. Before I load the game, I have a simple pre-login page with a Splash and background music. This page has no need to load the game engine or game ...
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1answer
79 views

online game, NPC monster death and hit detection to gain experience points

I'm doing a simple idle game, HTML5 client and Node.js server, but I'm making it online, where the client talks to the server (websockets) and all the logic is in the server (I want to prevent ...
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1answer
617 views

Javascript-How to create a moving bullet animation from canvas

the bullet cant see to move at all ...
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3answers
119 views

Draw the HUD just once on the canvas

I am not able to draw only one HUD of my game on a separate canvas, so I do not have to redraw it to each frame, I have four functions, init(), render(), loop() and drawHUD(): init() is my function ...
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0answers
149 views

Converting 2d cartesian coordinate-based map editor to rendering isometric view

I have been working on a 2d html5 canvas map editor. It is tile based, and originally it was just a top-down view on a grid of tiles (or empty spaces). I decided I wanted to convert it to render the ...
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1answer
385 views

HTML5 Canvas - Drawing with Floats

I'm trying to implement a game where you have car moving along a line in HTML5 Canvas. Using a little bit of trigonometrie I managed to get the right x and y coordinates to add to the coordinates of ...
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1answer
223 views

Javascript/HTML5 canvas: Integrate scrolling tilemap with map server

I am playing around adapting the example code at Mozilla Dev Network: Square tilemaps implementation: Scrolling maps to fit with a server I wrote myself. There's a link to the original source code at ...
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0answers
11 views

How do I fix these touch events? Events respond if there are 2 fingers but not 1

I am making a simple game of mine mobile-friendly. The goal is to: Make character walk if a touchstart event is sensed on right half of screen. Stop character if a touchend event is sensed on the ...
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1answer
387 views

How does the double-buffered canvas know when to swap the buffer?

How does the HTML5 canvas know that all the drawing operations are complete and it's time to swap the buffer ? Program can have multiple draw calls at different places so how will it know when is the ...
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0answers
91 views

Libgdx animation for HTML5

I'm working on my first html5 game with libgdx, it's a platform android game that I made a while back that I now want to host on my website. Everything has been going okay till I got to animating the ...
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1answer
755 views

WEBGL antialias false to pixel art low resolution

I know this issue maybe repeated and seems to be very common but I searched first and did not find anything concrete. I am doing some test and playing around with pixijs. I created an stage 320x180 ...
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1answer
246 views

Mobile screen resolution and canvas size

I'm making a HTML5 game using the canvas. I was building it for my iPhone 6 which state a resolution of 1334x750 pixels but also a resolution of 667x375 points. I notice that my canvas need to match ...
3
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5answers
90 views

Turning a simple HTML5/JS single-player game into a multi-player one

CONTEXT: I am currently developing the front-end/ client of a simple browser game using HTML5 Canvas/JavaScript. In the future, I would like to add a multi-player dimension to it, most likely using ...
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2answers
425 views

Detecting overlap with Phaser P2 physics

In a 2D platformer, I'd like to implement a ladder. I have collision working between the player and ground tiles. Now I would like to be able to detect when the player walks through a ladder tile (...
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2answers
87 views

How to access files in Chrome

So, I am making a game-like html file that needs to load a few assets. I have a loading animation which uses the timing of the loading files to create a progress bar. This all goes fine. The files all ...
2
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0answers
348 views

Persistent realtime game authentication (JWT, Passport)

Context I am building a MMO game in HTML5 with canvas. I use NodeJS on server & JS from scratch on client. I also use socket.io to manage realtime. The game is persistent & each player keep ...
3
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1answer
325 views

DrawImage problem adjacent sprite?

Context I'm building a 2D game from scratch in JS. I'm drawing the map by using rpgmxp tilesets for the moment just to have some resources : Each tile is 32*32 pixels. I'm using canvas API with <...
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1answer
3k views

unity webgl scale page on different sizes of internet browsers on pc or phone

unity only has a fixed resolution for building webgl. how can I make it changebale on users browser size change. there are some tutorials on the internet that doesn't match. there is only ...
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1answer
307 views

Implement resolution scaling HTML5 canvas

I'm building an hmtl5 real time game using socket.IO and node.js. If you've heard of the classic game "pong", I'm going for that. When you consider the gameplay for this game, it becomes apparent that ...
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1answer
445 views

WWW request does not connect using webgl platform

I use request like code below: ...
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0answers
194 views

Image looks GOOD on the editor but BAD (blurry) on the HTML5 export

I have a red bar that looks good inside Unity editor, but when I export the build it looks very strange. Any idea on how to fix this? The image on the left is the one with the strange/bad looking red ...
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1answer
215 views

Animation with drawImage vs canvas

I have a canvas that draws the letter 'a' with a box: ...
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1answer
53 views

Phaser problem with .damage oneshots

I am trying to damage player or enemy when they collide.(enemy will be damaged when collided with bullet and player will be damaged when collided with monster) ...
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1answer
106 views

What audio method works across all web browsers and mobile for HTML5/JavaScript?

I have looked at a number of ways to trigger audio in HTML5/JavaScript, but each time I find something that might be workable, I find web browsers and mobile devices it doesn't work on at all. What ...
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0answers
140 views

HTML 5 multiplayer game with java server logic code duplication?

I want to make a browser multiplayer game with java server. I'm still in the design stage and i'm deciding what technologies to use. But i stumble upon the problem when the client need the same logic ...
6
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1answer
7k views

How can I use vibration of an iPhone for my HTML / Javascript game?

I'm building a web game. I'm trying to use the iPhone's vibration functionality. How would I go about doing this seeing I want to package and deploy this game to the App Store. Is there a secured way ...