"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. ...

learn more… | top users | synonyms

0
votes
1answer
44 views

Rotating a view of a chunked 2d tilemap

I'm working on a top-down (oblique) tile-based engine. I would like for the tiles to have a definable height in the world, with Characters being occluded by them, etc. This has led to a desire to be ...
0
votes
1answer
55 views

Continous collision happening in Unity2d

I am working on Unity2d. I have a game object called gameobject1 on screen. It holds an image (named "state"). When I drag a tree on a gameobject1 collision is happening continuosly in the same layer ...
4
votes
3answers
867 views

Differences between C# and Javascript for Unity [closed]

Apart from the language differences (class-based vs prototypical, strong vs weak typing), what are the differences between using Javascript and using C# when developing games in Unity3D? Is there a ...
0
votes
1answer
87 views

WebGL wrong scaling of rectangle

I'm working with this tutorial http://www.html5rocks.com/en/tutorials/webgl/webgl_transforms/ and my result is, that the rectangle moves in the direction of it's scaling values, and also scales at ...
1
vote
3answers
102 views

Calculating step length with dividing a number that returns digits after the decimal point

How can I get rounded numbers from calculations that returns digits after the decimal point? And all the numbers together will be the number that is divided from. Explanation: I am currently working ...
2
votes
1answer
28 views

Mouse input and structure in JS [closed]

I am creating a simple concept where I have a small menu to choose a tool from and then I can click and drag to build. For example, I click on the rails tool and then I can click and move the mouse ...
0
votes
0answers
21 views

Javascript manage concurrency regarding variable/function access/call

Do i need to manage concurrency regarding variable/function access/call? A real life example: With Construct 2 game engine,using the Websocket Plugin: While i'm processing the current received ...
6
votes
2answers
840 views

Is using multiple canvas objects a good practice?

We're developing a jump and run game with HTML5 and JavaScript and have to build an own game framework for this. Here we have some difficulties and would like to ask you for some advice: We have a ...
-2
votes
1answer
66 views

Energy Bar in Unity [closed]

I want to display a debug message when the progress bar is loaded fully and I have a button "refresh", when I click this it should reload the progress bar. Here is the code I have tried: var ...
0
votes
1answer
33 views

Removing a previously rendered image on a canvas

I made a platformer using ctx.clearRect and ctx.fillRect, so each time the player moved I would just delete the previous position and draw him again. Now I'm working on importing my own art into the ...
4
votes
3answers
2k views

ImpactJS and Construct 2 [closed]

I'm interested in HTML5 game development and I found about this 2 game engines, I already know ImpactJS requires more programming experience and that Construct 2 has its own event and action system ...
0
votes
0answers
17 views

animating a spritesheet using crafty.js

this is my jsfiddle : http://jsfiddle.net/seekpunk/ek6ub4u5/1/ i don't understand what i am missing it's been three days now working and trying to do the animation but i am stuck ...
5
votes
1answer
147 views

City/Nation Builder - Unlocking game elements over time

Current Git (Needs more documentation) Current working prototype to play with (Git code is after a BIG refactor) Background: I'm making a javascript text city/nation builder along the lines of A ...
0
votes
2answers
66 views

Collision detection: Swinging bat/racket and ball

I am programming a side-view tennis game, inspired by an old arcade game, using Javscript and HTML5 canvas elements. The player can move left and right and holds a racket at arms length which can be ...
0
votes
2answers
105 views

Deal Damage to Player

I have to make a simple "avalanche" game to show I know how to use the physics and creating terrain. But I actually wanted to go a little above and beyond and actually give the player health so there ...
-1
votes
1answer
54 views

If object is bellow another object… do something [closed]

I have 2 objects in scene. When pillar is bellow target, pillar object needs to animate. I get this error: "NullReferenceException: Object reference not set to an instance of an object". var pillar : ...
0
votes
2answers
186 views

Why does my player stop when stepping onto a new tile?

Me and my friend are creating a game from scratch. He is in charge of art design and I am in charge of coding. I have done well so far with the code, but I have a collision detection problem when the ...
0
votes
2answers
104 views

Health bar in unity

I have created a button as my health bar and it must decreasing after a specified time.Here is the code I have written.But the problem,this code is working in the form "Its decreasing the button ...
0
votes
1answer
59 views

How to enable/ disable GameObject

I have child object with ParticleSystem component. I want to have particles disabled until I press button. I unchecked child object to make it disabled but when I press play it enables ...
0
votes
1answer
47 views

Phaser/HTML5 - Trying to add five instances to a group and display on the screen!

just started using Phaser today after seeing Thomas Palef's lessmilk series. I completed PhotonStorm's "Make your first Phaser game" tutorial, and grabbed the skeleton, some CSS, and started to throw ...
0
votes
0answers
33 views

Calculating co-ordinates of a line/ray that's increasing in height with a known slope/radians. Height increase is also known

basically in my game I'm firing a line. The line's anchor point is at the very bottom of it, and half of its width. When I fire the line, its rotation gets set to face where we want it to go. Then, ...
0
votes
1answer
23 views

Generate data points for shape based on an image

I am generating data points for 2d destructible scenery. Presently I had 5 for-loops (for a 5*7 2d structure) but will be expanding its resolution to outline a shape, but it will be horrible to code ...
0
votes
3answers
93 views

2D collisions between 2 arrays

I'm trying to do collision detection between bullets and enemies in my game. But it's very unpredictable and sometimes it works, sometimes it doesn't (bullet goes straight through without doing ...
1
vote
4answers
96 views

Check which object was activated first

How do I check which object was activated before the other? Let's say that there's door to open. To open the door you need to press firstly the second button and then the first button...but not the ...
1
vote
2answers
223 views

Bullet entry Point around Player Object

I have a player rotating by the mouse and want the bullets line up with the player's gun. Right now they simply come from the point of the player and shoot in the direction of mouse. I just need the ...
0
votes
2answers
97 views

How to show a float with no decimals [closed]

I want to show the current health and stamina of the player using GUI.Label. All is working fine however it shows the values with decimals to the millionth (example: ...
0
votes
1answer
84 views

Press multiple switches to unlock the door

I made 2 scripts, one that is a switcher and one that checks if object is switched (Switch, SwitchCheck). Switch script (it's on 2 objects that are switches and both objects have colliders with ...
2
votes
2answers
86 views

How can I manage complicated visual state over a simple model in puzzle games?

I've been encountering this design challenge making a few toys with Javascript (CreateJS, EaselJS) The scenario is that you've got some sort of puzzle game with a simple game model. For a simple ...
-1
votes
1answer
82 views

Code explanation

Can someone please explain whats going on in this code written by Paul Irish I did not understand the draw(). function draw() { var time = new Date().getTime() * 0.002; var x = Math.sin( ...
0
votes
0answers
97 views

Picking tiles in an isometric diamond map

I am rendering a isometric map with the following code: for(var x = 0; x < MAP_WIDTH; x++) { this.map[x] = []; for (var y = 0; y < MAP_HEIGHT; y++) { var screenX = ...
0
votes
1answer
58 views

Changing the material on an object on click in unity

Iam working on unity2d.I have six game object Object1,Object1,Object1,(these are images) ObjectImage1,ObjectImage2,ObjectImage3(these are images). I have arranged the object in the scene as a list ...
-1
votes
2answers
42 views

Character bounces/stutters down hills

I'm using Unity3D (not 4) and I'm experiencing a bit of a problem with character movement. I'm using a cylinder as a First Person player with a child Main Camera. In this cylinder is the stock ...
0
votes
1answer
36 views

Regeneration using Time.deltaTime

I'm trying to regenerate stamina at a rate of 1 per second using Time.deltaTime, however this doesn't do anything (My 'current stamina' doesn't change at all). I've done some looking around and I have ...
0
votes
1answer
29 views

How to use setInterval and clearInterval

I have a game that I am making and cannot seem to get the setInterval and clearInterval methods to work. When I debug it in the browser console it shows that the method is still being called over and ...
0
votes
1answer
122 views

Problem with Raycasting in a 2D Game

I'm new to using unity and came across a problem when I was following a tutorial. The game is in two dimensional space, and when my player walks over a certain tile the detection never goes off. ...
0
votes
1answer
54 views

How to use sprite as font in Unity?

I've started working on my first game in Unity; It's very simple, there's a spinning block in the middle, and there are spinning blocks coming from all sides. When they hit the middle block, you lose ...
1
vote
3answers
107 views

Freeze Player position temporarily?

I'm making a 2D sidescroller (although it's technically being made in 3D), and I need to freeze a player's position temporarily. With a RigidBody, this would be simple, but I can't think of how to do ...
3
votes
4answers
305 views

Why do I need a local server for HTML5 game development?

I'm new to HTML5 game development. I'm trying to make something using Pixi.js, but when I tried to view it in a browser, I saw a blank page. According to the tutorial I'm following, I need to set up a ...
3
votes
1answer
57 views

How to calculate whether a cuboids face edge is infront of or behind another for sorting

I'm building an isometric game, I want to position and sort objects in a particular way. All my entities have 3d bounds which determines their cuboid, looking my example, a different edge is used to ...
0
votes
1answer
63 views

How would one outline an alpha transparency layer in javscript and/or php? [duplicate]

I simply want an outline/edge detection of the character/item/object that is selected or doing something. I'm seeing lots of versions of this question for different languages, but I would appreciate ...
0
votes
0answers
31 views

top down 8 directional movement - need help with collision [duplicate]

I have for some time now been strugling with movement in my game. I want a zelda like 8 directional top-down movement. I have tried different things, but non of them have been perfect. EDIT: ...
-1
votes
2answers
71 views

C#Script select GameObject

I want to load the prefab instead of the gameobject that is in the screen, my code is this one: using UnityEngine; using System.Collections; public class Arma : MonoBehaviour { public static int ...
1
vote
0answers
44 views

Three.js camera turning leftside right

In Three.js I am trying to implement an orbiting camera can be rotated around the x and the y axis. I am using these two functions: function rotateX(rot) { var x = camera.position.x, ...
2
votes
1answer
118 views

Inverse Explosion with Unity2d

I am currently trying to make all other objects push away from the player when the player explodes. It currently works, but it pushes close objects a little and far objects very far. What I want is ...
0
votes
1answer
64 views

One draw call with one big mesh VS many draw calls with many little meshes

I have read that in order to optimize WebGL application, one should reduce an amount of draw calls. But does it mean that computing a one big mesh from all single meshes on CPU by modifying vertices ...
9
votes
2answers
1k views

What is the best way to handle simultaneous collisions in a physics engine?

I'm writing a 2d physics engine in javascript so that I can learn more about physics in video games. I have it working correctly for rigid body collisions, except for if any body collides with two or ...
1
vote
1answer
596 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
0answers
27 views

How do I repeat parts of some images in 2D Array in JavaScript but not all of them?

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 progressed pretty far in the past week ...
-1
votes
3answers
469 views

Can these game be fully coded in html5/javascript? [closed]

I mean the mechanics of the game. Would it be possible? -Pokemon GBA series, rendering the world would be easy, but what about battle mechanics? -MapleStory, after seen dragonbound.net which is an ...
0
votes
1answer
83 views

How does this game loop actually work?

I read this playfulJS post, about ray-casting: http://www.playfuljs.com/a-first-person-engine-in-265-lines/ It looks really interested, so I decided to look at his javascript. I am no expert in ...