"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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2answers
133 views

RPG: store dialog

I'm creating a single player web RPG. I was originally storing NPC dialog in a JS object. I could cycle through lengthy dialog in an array as I wanted. I can also store objects with K:V pairs. That ...
0
votes
1answer
86 views

Check legal movement on grid map

i'm trying to develop a simple multiplayer turn base game, i'm start creating the grid map, i have already write the javascript script to display the range movement for the specific unit, but my ...
0
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0answers
35 views

Box2d not showing consistent behaviour with sprites

Box2D newbb here. My question is in regards to this create js project:http://mboyeman.com/dashingdog/ (runs best in IE...:3) I wrote a function(assignBlockBodies) to give 2D Edges to sprites based on ...
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0answers
63 views

Javascript + HTML game slow on iOS

Just to practice, I made my own version of the 2048 game. (Link to the game is below). I don't understand why, but the UI updates with lag on chrome & safari on my iPhone 5. Since it's only ...
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votes
1answer
65 views

How do I make other players see one player's die rolls? [closed]

I'm new to PHP and making a simple dice game. It works well in single-player, but in multi-player, I don't know how to show the results of one player's rand(1,6) dice roll to the others using a web ...
1
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2answers
75 views

How do you account for zoom in a top down viewport?

I've been stumped on this for days so please forgive me if this question is in bad-form. I have a generic top-down RPG structure, and I want to create a zoomable Canvas viewport for it. I've read ...
-2
votes
1answer
106 views

in a 2D game that has an array as a map how to make graphics look nice?

I have a map that's stored in a 2D Array with 1s being walls, 0s being roads, and 2s being houses. There is a character that is not stored in the map but its position is always checked against the map ...
3
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1answer
136 views

determine collision angle on a rotating body

update: new diagram and updated description I have a contact listener set up to try and determine the side that a collision happened at relative to the a bodies rotation. One way to solve this is ...
1
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0answers
32 views

Moving a div with hotkeys using easing in and out

I'm working on replicating Tagpro using AngularJS and Firebase as a learning project. I want this ball to move using ease in and out like in the youtube video below. My code: ...
0
votes
0answers
64 views

EaselJS SpriteSheet isn't responding to gotoAndPlay

I'm developing a Fez-based HTML5 Canvas game using EaselJS and I've found a problem, that I can't solve myself, while trying to implement SpriteSheets to the hero. The problem is that I've defined ...
2
votes
0answers
61 views

Certain sound is played after last if within script [closed]

The idea is to make the sound work when comboTime is false. However, it works in an unexpected way: the sound works after the last if statement within ComboHud.js, which is: if (Time.time > ...
0
votes
2answers
146 views

what function creates rotation effect in three.js?

which part of the code is responsible for the rotation in this example? Is it the camera or the scene itself? http://threejs.org/examples/#canvas_camera_orthographic
2
votes
1answer
487 views

How do you set the target location for a navmesh using a GameObject?

I am trying to get a GameObject to navigate through a map and get to the exit. I have created a navmesh for the map and given the player GameObject a navmesh agent. The exit is marked with a empty ...
2
votes
2answers
91 views

How do I detect when an HTML 5 game has ended?

I'd like to embed HTML5 games in a website, but I need to be able to detect when the game has ended so I can run some of my own JavaScript. Looking at the output of some game engines (Construct 2, ...
0
votes
0answers
127 views

Shifting the camera and setting a new scene when using Box2D

My jsFiddle: // START -- MOVE CAMERA var p = new b2Vec2(); p = (ball.body.GetWorldCenter().x) * physics.scale; pos.push(p); var length = pos.length; var s = (pos[length - 1] - pos[length - 2]); //in ...
0
votes
1answer
73 views

GameObject remains null for some reason

The idea is to access the function BlockWasDestroyed(); from Combo class. Instead of var combo = gameObject.GetComponent(Combo); I've also tried with var combo = GetComponent(Combo); var ...
2
votes
2answers
791 views

android game development using unity 3d [closed]

I want to learn android game development. I dont have any programing knowledge. So should I learn JAVA and eclispe to develop games for android. Or should I learn Unity 3d. And is knowledge of java ...
1
vote
1answer
771 views

Adapting tilemap algorithm to support isometric tilemap

I'm using Phaser to build an isometric game. The framework doesn't have support for isometric tilemaps yet, so I'm starting to write a PR for it to support. What I currently have, loading an ...
0
votes
1answer
498 views

Error when using GetComponent (Object reference not set to an instance of an object)

I'm using a textmesh to check variables in real time. Thing is if I use AddComponent within Update(), it obviously starts spamming and slows the game. If I try with GetComponent the error is the ...
1
vote
1answer
41 views

Wrapping each script with classes causes errors

The goal here is to change variables from another script. Thing is that they must be in classes, so for example I wrapped this code (which is from PadControl.js): #pragma strict public var ball : ...
2
votes
2answers
138 views

How do I implement friction in a billiards game?

I'm having trouble implementing friction in a billiards game. Currently, the ball only slows on collision with the edges, but I also want some friction with the background. How can I implement ...
1
vote
1answer
164 views

Can't edit specific variables from the inspector panel, while variable is static

In order to make the variable accessible from other classes, I have to make it static. When I make it static, I can't edit it from the Unity's Inspector panel. No way to be able to do both: ...
-1
votes
1answer
55 views

Why does loading a JSON file require the usage of a callback function? [closed]

I was wondering why functions that parses JSON files always use callback functions instead of just returning loaded response text? An example here and here. If it is possible, how would I return this ...
1
vote
1answer
145 views

Custom lookAt function goes wild

I have written a custom lookAt function based on a lot of posts from all over the net, and it works very nice... except when a rotation (which is stored in a quaternion) crosses some 'threshold'. ...
0
votes
3answers
109 views

How would I apply my isometric art onto isometric CSS with correct Z-indexing

I have been trying to wrap my head around how to apply my isometric art into an array like so with correct z-indexing In the long run I want to be able to select a specific tile and depending on ...
2
votes
0answers
34 views

Presentation / input layer that communicates with server [closed]

I want to learn more abot how to use some kind of presentation/input layer that communicates with server for HTML5 games. Instead of sending all the code to the clients browser, I would like to just ...
0
votes
0answers
9 views

box2dweb issue in DestroyJoint function

my jsfiddle : http://jsfiddle.net/H8e9m/9/ as you can see when the ball reach the pendulum end and collide with it by a revolute joint, the problem occurred when trying to make the ball release the ...
3
votes
1answer
124 views

Game loop in Javascript

I've been into javascript game programming with html5 and canvas lately. So far I've only been able to implement a game loop with setInterval, but I'm aware this means using fixed timestep. I've ...
0
votes
1answer
178 views

Developing a general use multiplayer API [closed]

I'm tasked with the development of a general use multiplayer API in JavaScript, with a Node.js back-end. The goal of the API is to provide a service to JavaScript mobile game developers so they can ...
1
vote
1answer
233 views

How can I restrict the rotation of an object to a subset of axes using quaternions?

I've got a question about quaternions in my WebGL application. How can I rotate an object only around two axes? For example, how can I exclude/nullify rotation about the Y axis? The problem is that ...
0
votes
0answers
136 views

Animate 2D Human body Skeletal with Hands using JS

I am working on a JavaScript app to create interactive 2D animations in the browser. I'd like to create a human body. Let's consider this simple scenario to better explain what I want to achieve: I ...
1
vote
1answer
50 views

SVG—Adding fire to the roket

as you might expect, I have got a game in development, including a main character—fortunately… This character is on the one hand represented by a bunch of Box2D bodies and on the other hand, ...
0
votes
1answer
109 views

Strange quaternion camera streching in WebGL

So after a lot of researching about quaternions I almost got the quaternion camera working. Almost, cause it rotates in a proper way only in a vertical axis. Other rotations stretches and deforms the ...
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votes
2answers
120 views

collision detection algorithm issue

here is the jsfiddle i am working on so far : http://jsfiddle.net/TLYZS/ if you debug the code and check the collision function you can see that the collision is working fine when the user overlap ...
0
votes
1answer
43 views

What is the actual formula to find the vertices of an animation frame in using a BVH file?

I've read this tutorial and tried many formulas to build the skeleton. I am able to build it without the rotations, but those break everything. This, for example, is a simplified code for one of my ...
1
vote
1answer
268 views

Should game logic update per second or per frame?

I'm trying to wrap my head around how and when to update an entities position. My game loop updates logic at 25 FPS and renders at 50-60 (Depending on the computer hardware). So lets say I'm moving ...
1
vote
2answers
688 views

Dealing with multiple animation state in one sprite sheet image using html5 canvas

I am recently creating a Game using html5 canvas .The player have multiple state it can walk jump kick and push and multiple other states my question is simple but after some deep research i couldn't ...
0
votes
1answer
70 views

setting a time delay between two frame when animation a sprite sheet

this is my jsfiddle :http://jsfiddle.net/Z7a5h/ As you can see the animation of the sprite sheet when the player is not moving is too fast so i was trying to make it slow by declaring two variable ...
12
votes
3answers
695 views

How do I lerp between values that loop (such as hue or rotation)?

View Demo I'm trying to make the joint rotate smoothly around the center of the canvas, toward the angle of mouse pointer. What I have works, but I want it to animate the shortest distance possible ...
0
votes
1answer
83 views

Box2D: Adjusting character position for side-scrolling

In my side-scroller I would like to give the illusion of the character walking forward while his sprite is actually being held in place. If he walks near the edge of the screen, I would like to adjust ...
1
vote
0answers
41 views

Maintaining relative location of objects across different screen resolutions

I'm developing a very simple interactive HTML5 game, in which I need to show a room having multiple objects like cupboard, table, fan etc. How can I bind all of the objects together, so that they ...
0
votes
1answer
147 views

(WebGL) Point light per-fragment issue

I'm using an FPS-like camera, this is the code: CAMERA mat4.identity(mat.mvMatrix); mat4.rotate(mat.mvMatrix,degToRad(-camera.pitch),[1,0,0]); ...
1
vote
1answer
134 views

JavaScript: Rotating a canvas around its center for a 2D sidescroller

I've been making a 2D sidescrolling game using JavaScript and HTML. The game is set in space, where the player character can fly around (Up, Down, Left and Right keys) and rotate the world around him ...
2
votes
1answer
951 views

How can I apply a glow filter in Phaser?

I'm trying to get the following effect, but as far as I know, a filter is the only sensible way. Imagine some objects and background, and a fire ball passing through. The fireball glows. All objects ...
0
votes
1answer
106 views

2D animation is not rendered as it supposed to

I'm working with Melonjs, i have configured everything to update the character movement and still get this "delayed" rendering of the character. below is the constructor // call the constructor ...
1
vote
1answer
122 views

UV Texture coordinates out of [0,1] (WebGL)

I'm creating a 3D game with WebGL and i'm using Wavefront Objects as a base model format. I recently found some models, their texture coordinates of which are out of the typical [0,1] range and i ...
0
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0answers
53 views

HTML5 Canvas: Get rect coords after rotation (relative to screen)

update: function(delta) { for (var i = 0; i < this.bullets.length; i++) { this.bullets[i].velocity = this.bullets[i].speed * delta; this.bullets[i].contextX += ...
3
votes
2answers
199 views

Loading chunks of the terrain relative to the player's position

I'm making a small voxel-based multiplayer WebGL game with a Node.JS server which handles player positions and sends terrain chunk data to the clients. This is an example of how I'm currently sending ...
1
vote
1answer
87 views

Passing a list of existing entities to a new client when using a component system?

My game server uses entities containing components to represent everything in the game world. This has worked great so far but I've run into a problem now that I'm allowing clients to connect to the ...
2
votes
1answer
82 views

Deterministic calculation in JavaScript [closed]

I want to create a multiplayer game with HTML/JavaScript and only send user input between players. I read some articles for C++, saying that I could not expect floating point to get the same results ...