Questions tagged [javascript]
"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. http://en.wikipedia.org/wiki/JavaScript
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Do you need to know JavaScript to make games with RPG Maker?
Do I have to know how to code in JavaScript to make good games in RPG Maker MZ? I'm asking cause I know you don't really have to code in RPG Maker. I already tried some programming languages, so I ...
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Mixamo -> Blender -> BabylonJS empty scene
I am following this tutorial on babylon.js and managed to export a .babylon file, but when I load it with:
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steering behaviors collision avoidance: vehicle shaking before arrive at destination
I have made a test sketch of collision avoidance using javascript, as you can see right here.
I want the vehicle to move to the clicked location, avoiding obstacles on the way. It is working, but not ...
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Player Jumping inconsistent and bugged
I am having a lot of different issues while coding player jumping for my game. Sometimes when the player hits the jump key the jump is delayed and/or doesn't jump to the heigh it usually does. I am ...
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How to draw/calculate a parabolic arch to hit stationary target in Javascript
First off I must admit I'm really not good at math and am trying to learn but have had a hard time finding examples someone like myself can follow. I'm trying to figure out how to draw and calculate ...
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How can i rotate an object based on the finger position?
I am using Lens Studio to build an AR effect and trying to use the position of the hand tracker fingertip to make a cube rotate. For example, as I move my finger on the x-axis the cube rotates in the ...
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How to publish WebXR game on Quest or Steam stores?
I would like to develop a simple and small game for WebXR so that Quest, Index, etc. can play it. I would eventually like to be able to put it on the Quest store and Steam.
Is there a way to publish a ...
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Adding requestAnimationFrame in isometric Tile grid Code is not working
Hi There this is my first Post on gamedev, and i hope everyone understand what i want :)
First of all my Code is an very Personal Version from one Github Isometric Map.
I Tryd now 2 Days to Add the ...
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How to instantly break method call?
I'm making 2d Mobile game using JavaScript.
I have method that controls every character (Dumb AI) on battleground. It using recursion to call another action. I want to add debuff system and had little ...
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Why is this code keeping the listener which should be removed instead?
I am having some issues figuring out why this code still lets btn_1 call the function setstate3().
There is a function ...
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why does my button lose the changed cursor and mouseover behaviour as soon as I attach a class to my file?
Using adobe animate cc - exporting to HTML5 and coding in JS (or at least trying to)
If I just hit cntrl+enter in adobe animate the button works as expected.
If I run the app from a web server using ...
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How to create global function for all .JSLIB files?
I can't understand how to work with .jslib files. I don't understand the syntax of this type of file. Also I couldn't find any easy explanation of it
The problem ...
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How can I seamlessly loop a video (webm since it has transparencies) in javascript canvas?
I am trying to play a video from beginning to 10 seconds, then loop the video from second 3 to 10 untill a key "c" is pressed. if it is pressed once, play the video from where it is ...
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How to distribute values in a grid based system
Context: I'm working on a simple environmental simulation in Javascript. I created some simple plants that grow, reproduce, and pass along their traits to their offspring. The simulation was pretty ...
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How to stop player when they hit an axis aligned bounding box?
I'm in the process of creating a game using electron and HTML5. It's going to be a pretty basic story-based platformer, but I'm ...
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How do i get this web app to use the up joystick button as an input
There is this reaction time test app that calculates the reaction time from the time you press a button, it works with the joystick buttons except for the directional buttons, this is the app:
https://...
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Randomly distribute damage among allies
Let's say I have regiments of varying sizes, 500, 1000, 4000 troops.
I want to distribute 1000 troops worth of losses to them so that in aggregate they lose 1000 troops. I want to do it as a ...
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How to create a basic strategic AI?
I started creating a Vue3 version of the classic Sid Meier game Colonization. I have the basic player mechanics in place and even created a map editor. So I have 3 of the 4X in place: Explore, Expand ...
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How can I protect against a cheater changing variables on the client?
I built a multiplayer fighting game with impactjs, socket.io and nodejs and faced with "change variables hack" (I want to call it like this). All my current logic with jump, running, shoot ...
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How to spread circles evenly around a point?
In my game there's a part where a bunch of circles need to evenly spread around a point. Like in this demo below:
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Algorithm for taking the shortest path between two XY coordinates
I am making a simple game in Phaser (but the library doesn't really matter).
I have an enemy that is moving towards the player on a 2 dimensional grid. I have written some code that makes the enemy ...
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Invisible sprites with requestAnimationFrame
I'm trying to animate a sprite sheet. I have a single image, and multiple objects of the same type but drawn at different locations on the canvas.
What I'm trying to do is have each object move with ...
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Octree build time crashes page for complex mesh
Using the standard three.js FPS example of octree implementation with a more advanced mesh, crashes the page on load.
My first idea is to write a few functions to save the octee data to a file, then ...
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How do I go about creating images, which are units with traits?
Lets say there are 5 units, displayed as images on an html5-canvas.
Each image (unit) has a different size. For the game I need to know the size of that unit, and also it's middle point.
How and where ...
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How to send a JS game using a Discord bot?
I have made a JavaScript game. Now I want to make a Discord bot that embeds it in a message, so a reader can click on the embed to play the game inside the chat. Something similar to this Snake game.
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Efficient calculation of billboard sprite transformations
I'm currently adding a billboard mode to animated sprites and static sprites in my 3D engine.
The code below works fine, but I want to know if a more optimized solution exists. I've heard about ...
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Remove 2D images from layer where overlapping layers hide them completely
I'm creating a 2d game (engine written in JavaScript) with layers system. I would like to have some post process to optimize the images and the layers.
If there is too many images in one layer it ...
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Streaming animation data via WebSockets
I have a 3D character model and I am streaming animation frames from a server to the client via a WebSocket (I am using three.js). I need some advice on how to correctly integrate the streaming data ...
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How can I fix this wall jittering in capsule to octree collision?
In the three.js example for a first person game https://threejs.org/examples/?q=game#games_fps you should notice that at the corners it gets stuck, seemingly because it collides with one side, then ...
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Game networking with physics different client and server languages
We are currently having only "turn based" multiplayer games in our party game lobby system. Now we considered to add realtime multiplayer games as well, for example golf in 3D. Our current ...
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Multiplayer game - Player position updates transmission pattern
I'm building a very basic 3D multiplayer game using Three.js and Socket.io where all the player does is move in an environment.
Considering there will be ~ 100 players in a single room and all data ...
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How do I respond to AABB collisions?
I'm coding a physics engine in Javascript. Forces, Gravity, Friction, AABBs are taken care of. Now, the big question: how do I respond to AABB collisions? Right now, when an object collides, it prints ...
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How should I share the states amongst all the executions of a Behaviour Tree triggered from all ticks?
I'm still learning about Behaviour Trees and my understanding of the "blackboard" is essentially a state object. When passing the state object through the ticks to the function calls (which ...
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Creating a Game in Three.js do i share camera, scene objects?
Im creating a game with React and Three.js and vanilla Javascript, i have several clases, representing objects in the game, do i need to create a camera, scene, renderer for each class or i simply ...
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Aircraft simulation
Trying to get a "semi" realistic aircraft simulator. I'm pulling my hair out because I just can't get the math right. I'm not looking for super realistic but want to at least get some ...
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JS 2D top down movement doesn't act as expected
I realise this is very similar to other 2D movement questions already posted but cant find a solution that fits the behaviour I'm looking for, so I'm posting in the hope that someone more ...
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How to make an update loop in a Node.js game server
I'm making a multiplayer game with a Node.js server, and I'm searching for how to write the game loop.
I'm currently using a setinterval every 15ms, but someone ...
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How to prevent a huge backlog of physics calculations from freezing browser when tabbing out of browser game?
I'm developing a browser game and am using the timestep implementation from the famous Fix your timestep! article.
It works perfectly, but there is one problem. If you tab out of the tab and then come ...
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Struggling with breadth first search for hex grid
I cant seem to get breadth first search right. Ive gone through redblobs implementation guides of hex grids and have that all figured out but pathfinding is proving to be difficult.
So I have a search ...
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How to make a cubemap image with perlin noise?
Recently I just finished a program which makes a plane image using perlin noise. Now I want to make that image a cubemap image.
This because I want to apply it to a planet (which was made from a cube)...
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Besides 3d, why would I need to use a canvas instead of using plain css and html?
Purely speaking for the use of 2d.
First off, redrawing the canvas on every frame seems quite inefficient. Even when you can create multiple to not redraw everything etc.
CSS animations to move ...
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How to efficiently do one-to-many collision checks?
Scenario: 4 players, each can have from 1 to 100 pawns.
I want to be able to efficiently check if Player 1's pawns collides with Player 2, 3, and 4.
Currently I have an AABB check, done first on ...
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How to interpolate angular data properly
I have been trying to interpolate raw angular data in degree (for a flow map grid) but any attempt fails because there is always two path, and I can't figure out how to interpolate on the shorter one ...
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Three.js Animate Text error geometry.faces
In this three.js Text example they animate text, i am trying to implement it on React/Three.js but i got the error TypeError: can't access property "length", geometry.faces is undefined
in ...
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Alternative to redrawing the background canvas for camera movements?
I have multiple canvases placed on top of each other for different layers (background, game objects, foreground). I was expecting this to allow me to have the background and foreground update at a ...
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How to add a texture inside a specific area in a canvas in javascript?
How could I draw a texture between the bottom of the canvas and below the green line, in javascript?
I dynamically add coordinates in a canvas, then draw lines between these points.
EDIT : Solution: ...
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What is causing my touchstart event to end while I'm still touching the screen, and how can I fix that?
What I'm trying to do:
I'm trying to add touch controls to games created with the html canvas and JavaScript so that they can be used on mobile / tablet devices.
The controls should simply move a ...
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Right Axis warps on 3D planet's equator
I am using JavaScript and WebGL for a game which rotates a spaceship around a 3D planet. Below is the code for rotating a sphere spaceship and sphere planet. I looked over your camera code and now it ...
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Interpolate colors between vertex in a plane
So I have this plane generated with two different Perlin noises. It has mainly 3 regions, divided by color. I want to smooth out the lines, to create a "gradient" so there are no abrupt ...
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