What is the method of direction storage used by Three.js?

element, there is a discussion about coding a server for a new game developed by a group of friends. The question focuses on how to store the direction a player is looking at in a 3D plane efficiently. One suggestion is using an object with two variables for radians - vertical angle and horizontal angle. However, another friend recommended following the methodology utilized by Three.js for easier integration. Any guidance on this matter would be greatly appreciated.

Answer №1

If you're looking to enhance your skills in Math for Game Developers, check out this series on YouTube: https://www.youtube.com/watch?v=sKCF8A3XGxQ&list=PLW3Zl3wyJwWOpdhYedlD-yCB7WQoHf-My&index=1

One important aspect is using vectors. It's recommended to store the orientation or facing angle of characters or entities as a 3-dimensional vector, such as new THREE.Vector3( x, y, z ) in THREE.js.

To determine the direction from object A to object B relative to A, you can use the following code:

var direction = posB.clone().sub( posA )

This ensures that position B is cloned before subtraction to avoid altering its original value, and then subtracted from position A.

Afterwards, if the vector has significant length, it may be necessary to normalize it for certain calculations, like multiplying by a thrust force:

direction.normalize()

Once normalized, you can perform actions like:

posA.add( direction.clone().multiplyScalar( 10.0 ) );

This will result in moving posA towards posB by 10 units in space.

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

Using Javascript to Divide Table into Separate Tables each Containing a Single Row

Is there a way to divide the content of this table into three separate tables using JavaScript? It is important that each table retains its header information. Unfortunately, I am unable to modify the id's or classes as they are automatically generat ...

Troubleshoot: Node Express experiencing issues reconnecting to ajax

Here is the initial question that needs to be addressed. I am currently developing an API that links a front-end application (built using node, express, and Ajax) with a Python swagger API. The issue I am facing is that although I can successfully send da ...

The custom tooltips feature in Google linecharts will function properly only when the focus target is set to category

I am currently using PHP, MongoDB, and JavaScript to develop my Google Charts Line charts. In PHP, I have designated one column as the tooltip role, positioned as the last but one column. The default tooltip displays the X-axis (Date) and Y-axis (Value), b ...

Concluding the dialogue once the post request has been successfully processed

My tech stack includes React, Redux, NodeJS, and ExpressJS. For the front-end, I'm utilizing material-ui. Within my application, I have implemented a dialog that allows users to input information and sign up. Upon clicking submit, a POST request is in ...

What is the correct way to utilize ng-if/ng-show/ng-hide to hide or show HTML elements within the app.run function

I am currently working on developing an app that loads views correctly. HTML: <body> <loading outerWidth='1000' outerHeight='1000' display='isReady'></loading> <div class='wrapper' ng-sho ...

What could be the reason behind the occurrence of an error after deleting certain lines of code

The code below is functioning correctly. obj = { go: function() { alert(this) } } obj.go(); // object (obj.go)(); // object (a = obj.go)(); // window (0 || obj.go)(); // window However, an error arises when I comment out the first two lines. obj ...

In Reactjs, a child component is unable to activate a function that is owned by the parent

I'm working with a modal parent component and a form child component. The challenge I'm facing is that the function to open and close the modal is in the parent component, while the submit function is in the child component. What I need is for th ...

Conceal image and substitute with a different image using JavaScript

My query pertains to JavaScript: how can I create an effect where clicking the jump-down button opens a text box and causes the button to change direction and rotate? I am considering using two photos - one hides when the jump-down button is clicked, and ...

Instantly display modal upon website loading

Adding more context to the title, I have a modal that was included in a purchased template and it was originally set to only open when a button is clicked. However, I want the modal to automatically pop up when the page loads. The issue is that the modal ...

What steps can be taken to safeguard data while navigating within the Angular framework?

I am facing an issue with storing an array of items in a service (referred to as cart service) and displaying it in the component (cart.component.ts). The components bgview.component.ts and single.component.ts are involved in selecting individual items, wi ...

Having trouble with Node JS res.redirect() not functioning as desired?

I'm attempting to use res.redirect() to redirect to an external URL, but the host name isn't being replaced. For example: My current URL: https://example.com Desired redirect URL: When I use res.redirect("https://example-2.com/pqr?par=123 ...

Discover the position within a two-dimensional array

Suppose I have an array that contains objects, and each object has its own id property. In this case, I can find the index by writing: data.findIndex(x=>x.id === newData.id); Now, if data is an array of arrays of objects, how can I efficiently get two ...

Storing a multiline HTML-encoded text within an SQL database

How can I effectively store HTML code in an SQL database after encoding it with encodeURI()? Unfortunately, I am encountering multiple errors while attempting to do so. https://i.sstatic.net/QKNYt.png I have tried using dataType as <CLOB> and also ...

The function window.open() is experiencing difficulties when trying to open a file located in a subfolder

As someone who is new to programming, please excuse any lack of knowledge on my part, but I am having trouble finding the answer to this. I am currently using window.open() to open a .php file in a popup window and passing a variable through the URL to be ...

Using node.js for synchronous callbacks in node.js programming

I am new to node.js, and from what I've gathered, each callback creates a new event that can be executed in parallel. For instance, consider the following code with a callback: function testFunction(var1){ s3.head(var1, function(data, err){ ...

Automating the Process of File Downloads Using Ajax and PHP

I am currently working on a form that requires users to enter a secret key. Once the key is submitted, it is verified against a database. If the key is found, the relevant file associated with the key should be downloaded automatically. I have successfully ...

JavaScript encounters difficulty in reading the text file

I am working on a project where I need to read a local text file located at /home/myname/Desktop/iot/public/sensordata.txt using JavaScript when a button is clicked on a web page. Below is the code snippet I have been using: <html> <head> ...

Analyzing HTML code can disrupt elements related to JavaScript, even though the scripts themselves are

I've developed a script that transforms the Arabic numerals in the body's innerHTML (like 123) into Arabic-Indic numerals (١٢٣), while leaving numbers in tag attributes unchanged and excluding certain tags like script and style. The parser is ...

Substitute all numerical values with a designated number from a variable

I came across a link that looks like this foo.net/index.php?page=15 My goal is to replace any number after page=xxx and retrieve the new number from a variable Currently, my code only replaces 15 with 16 var num = 16, // What if the str = foo.net/index ...

Executing the `process.nextTick` function throws an error, causing the message: "Headers cannot be set once they have been sent."

I'm attempting to retrieve data from MongoDB within a Node.js file. I am encountering the following error: /home/jay/node_project/user_data_manag/node_modules/mongodb/lib/utils.js:98 process.nextTick(function() { throw err; }); Error: Can't ...