What is the best way to adjust the camera position in ThreeJS while taking into account perspective?

Question:

Currently, I am developing a first-person maze game using Threejs. I recently integrated DeviceOrientationControls to transition the game towards VR. However, I have encountered an issue where my previous camera movement system, which used arrow keys, is no longer functional as the camera is now separated from it.

  • How can I regain camera movement control using arrow keys while still updating the camera with DeviceOrientationControls?
  • If possible, how can I automate forward movement based on the camera's perspective?

Update:

Alex Fallenstedt discovered a suitable example that aligns with my requirements.

Nevertheless, I have a few inquiries;

  • What method does the script use to move the camera?
  • How can I streamline or incorporate this functionality into my project?

Resources:

How to control camera both with keyboard and mouse - three.js

Detecting arrow key presses in JavaScript

How to move camera along a simple path

How to control camera movement with up, down, left, right keys on the keyboard

Comparison:

View the game's previous behavior (with functioning controls)

See how it currently operates with VR integration

Note: I have omitted my script as I believe it may not be necessary for this inquiry. Should you require it, kindly request and I will provide it.

javascriptcamerathree.jsgoogle-cardboard

Answer №1

Let's address your inquiries:

1) How is the camera movement controlled by the script?

Breaking down the script to its basics, initially, it establishes a state to determine the user's forward movement. This state changes upon user interaction with the W, A, S, D keys. Event listeners are added to modify this state based on key presses or releases. Consequently, on each rendered frame, velocity is added in specific directions depending on the pressed keys' state. This process occurs here. Subsequently, we can grasp the concept of velocity by logging its values in the animate() function and observe its changes while moving around.

So, how does this velocity affect the camera's movement? This script also utilizes an additional script named PointerLockControls. The complete script for PointerLockControls can be viewed here. Note that PointerLockControls solely requires a camera as its argument. For camera movement, functions within PointerLockControls like getObject need to be employed. This function retrieves the THREE.js object (i.e., the camera) passed into PointerLockControls.

Upon obtaining the camera, it can be moved by translating its x, y, and z values with the velocity generated earlier within the animate function.. Further information on translating objects using these methods is available in the Object3D documentation.

2) How can this be simplified or integrated into other projects?

Implementing first-person controls for the camera is relatively straightforward using this method. Most components in the shared script example serve as checks, such as enabling user movement within a threeJS object or incorporating mass and gravity concepts for realistic user interactions. Checking if the pointer is within the browser's window could prove exceptionally useful. By dissecting the example and starting from the basics, users can gradually build upon it.

For a codepen demonstration showcasing smooth forward camera movement without pointerlockcontrols, refer to line 53 in this example: https://codepen.io/Fallenstedt/pen/QvKBQo

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

``There seems to be an issue with setting the input value attribute using jQuery's .html

I've been trying to update the value attribute in the input element within my HTML code, but so far, I haven't had any luck with it. HTML: <div class='photo-info'> Photo Name : <span class='photo-name'><?p ...

javascriptjqueryhtml

Looping through items with ng-repeat and creating a submenu with M

When constructing a menu from a JSON file with submenus using the JQuery.mmenu plugin, I encountered an issue when trying to implement the submenu structure with ng-repeat. The raw HTML approach worked perfectly, but as soon as I introduced ng-repeat to dy ...

javascriptjqueryhtmlangularjsmmenu

Tips on Avoiding Initial Click Activation

I've been working on a JavaScript function that dynamically generates an iframe with a button that, when clicked, deletes the iframe itself. Here are the functions I've written: function createIframe (iframeName, width, height) { var ifram ...

javascript

Exploring the use of Dividers within Material-UI's Tabs

When attempting to include a Divider or any other element that is not a Tab within Material-UI Tabs, DOM warnings may appear in the console. <Tabs ...> //... <Divider /> //... </Tabs> One workaround for this issue involves creatin ...

javascriptreactjsmaterial-ui

JavaScript tag filtering system: Display only the div elements that contain all the specified classes in an array; otherwise, hide them

Can you provide some guidance on accomplishing this task? I am looking to toggle the visibility of a div based on its classes and an array. If the array contains the term something, then only divs with the class something will be displayed. If the array ...

javascriptjqueryhtmlcssecmascript-6

Struggling with AngularJs as I attempt to retrieve my Twitter timeline. It's been a challenge

Currently, I am using the code below to fetch tweets for a timeline. This snippet was originally taken from an AngularJS tutorial and worked perfectly with Twitter's search API. angular.module( 'Twitter', [ 'ngResource' ]); func ...

javascriptangularjs

What is the origin of the second parameter in an arrow function that returns another arrow function in a React component with Redux?

I'm having trouble understanding where the (val) parameter is coming from in the returned arrow function. I understand that max/minLength is an arrow function taking an argument set on the input field (3 and 25), and it returns another arrow function ...

javascriptreactjsecmascript-6redux-formhigher-order-functions

What is the process of changing the name of an object's key in JavaScript/Angular?

In my possession is an established entity, this.data = { "part": "aircraft", "subid": "wing", "information.data.keyword": "test", "fuel.keyword": "lt(6)" } My objective is to scrutinize each key and if the key includes .keyword, then eliminat ...

javascriptangularobject

Navigation that sticks and changes upon hovering over div elements

Just delving into the world of jQuery and JS, so I appreciate your patience:) Currently, I have a sticky navigation bar positioned at the top of my webpage that links to different sections of content below. I am looking to create an effect where the corr ...

javascriptjqueryhtmlcss

Incorporate a new JavaScript animation as the background for an established website, replacing the static background image

Seeking assistance with my portfolio as I delve into the world of Webdesign and learn the basics from templates. How can I integrate this javascript code into the background of my site, replacing the current minecraft image? Every attempt to implement it ...

javascriptjqueryhtmlcssweb

Is it feasible to utilize a variable as a function within JavaScript programming?

I've been diving into the world of express.js and came across these statements. const express = require('express'); const app = express(); It's intriguing how we can call the variable "express" as a function by simply adding parenthese ...

javascriptnode.jsexpress

Is it possible to extract the body from the post request using req.body.item?

After working with Express, I learned how to extract body data from a post request. Most examples showed that using req.body.item should retrieve the desired value for tasks like inserting into a table. However, in my case, I found that I couldn't ac ...

javascriptnode.jsvue.jsexpress

Javascript does not have the capability to parse JSON

Received a JSON response from a PHP file: [ { "color": "black", "product_name": "Prod2", "revision": "apps/" }, { "color": "green", "product_name": "Prod1", "revision": "dev/" } ] (successfu ...

javascriptphpjson

Generating a JavaScript array in PHP

As I work on developing a dynamic Google Geochart, one key aspect is creating an array to hold the data. The structure includes the country as the unique identifier and the color value to determine the map shading. arrayData = [['Country',' ...

javascriptphparraysdatabasegoogle-visualization

What causes compatibility issues between JEST and import statements in NEXTJS?

Just starting out with unit testing in JavaScript and I'm attempting to create a unit test for a Next JS project. However, when running the test, I encountered the following error: Code: import {isBase64} from '../../service/base64-service&a ...

javascriptjestjsnext.js

Can you explain the distinction between Array() and [] in Javascript, and when would it be preferable to use one over the other?

Similar Question: Understanding the difference between "new Array()" and "[]" in JavaScript array declaration When working with JavaScript, you have the option to create a new array using: var arr = new Array(); or simply using: var arr2 = []; Wha ...

javascriptarraysliterals

What is the best way to notify my form that a payment has been successfully processed?

I'm working on a form that has multiple fields, including a PayPal digital goods button. Clicking on this button takes the user out of the website's workflow and into a pop-up window for payment processing. Once the payment is completed, the retu ...

phpjavascriptpaypal

express: how to differentiate routing path based on request parameters

Currently, I am working on an API that is designed to receive a specific value from an Android client and then provide back a list of posts. One interesting aspect of this API is the request value known as req.body.sortType, which influences how the list o ...

javascriptnode.jsexpress

Tips for exchanging JavaScript variables with PHP using AJAX

Hey there, I'm new to JavaScript and I've hit a roadblock with passing variables to PHP using Ajax. <script> $date = "123"; $.ajax({ url: './record.php', type: "POST", ...

javascriptphpjqueryajax

Incorporating type declarations for a basic function that returns a wrapper function for other functions

In my vanilla JS code, I have a sophisticated function that is exported and I am attempting to create a .d.ts file for it. Unfortunately, my previous attempts at writing the .d.ts file have not been successful in passing the types from one stage of the fu ...

javascripttypescript.d.ts