In this blog post, we will walk through the fundamentals of building a lottery-style web application utilizing Three.js, Webpack, HTML, and JSON. Whether you’re a gaming enthusiast or a budding developer, this guide will unfold the mesmerizing world of interactive web applications!

Setup Your Project Environment

To kick off your project, first ensure that you have Node.js installed on your machine (version 12.11.0 or higher is recommended). Proceed by creating your project directory and setup package management with Yarn.

• Initialize your project with Yarn:

yarn init -y

• Install essential packages for your project:

yarn add three webpack webpack-cli

Running Your Application

Now that your environment is set up, you can start your application using the following commands:

• To install all dependencies, run:

yarn install

• To launch your development server, use:

yarn dev

• To build your application for production, simply execute:

yarn build

Understanding the Code Structure

Our project is organized in a structured way for better manageability. Here’s a quick analogy to help visualize this:

Think of your project like a well-organized library:

• src: This is your main section where the collection of books (source code) lives.
• lottery: The heart of your library, where different lottery functions are encapsulated.
• mock.js: Your storyteller, illustrating sample data for the lotto.
• index.js: The librarian, guiding how different pieces connect and interact.
• lib: Contains various utilities, akin to the reference section for quick access.
• package.json: This holds your library’s cataloging information.
• webpack.config.js: The blueprint for how your library’s layout will be structured.

Mock Data Structure

The mock data simulates the lottery environment, which includes users, prizes, and various attributes:

{
  user: Array[Info], 
  prizes: Array[Gift], 
  luckyData: type: Array[Info],
  leftUsers: Array[Info],
  excludeUser: Array[Info],
  atmosphereGroupCard: String,
  background: String,
  EACH_COUNT: Array[Number],
  width: string,
  height: string,
  bgVideo: string (mp4)
}

Functionality to Exclude Users

The function setSecret(nowItem, basicData) aims to filter out excluded users based on specific conditions:

function setSecret(nowItem, basicData) {
  if (nowItem.type != 4) {
    const excludeId = excludeUser.map(item => item[0]);
    basicData.leftUsers = basicData.leftUsers.filter(human => !excludeId.includes(human[0]));
    console.log(basicData.leftUsers);
  }
}

Troubleshooting Common Issues

Sometimes, things might not go as planned. Here are some troubleshooting tips:

• If your application doesn’t compile, check for syntax errors in your JavaScript or JSON files.
• If the app runs but doesn’t display as expected, ensure your Three.js objects are correctly set up and added to the scene.
• Check the console for any error messages that may give insight on what went wrong.
• If you face issues with Yarn, try deleting the node_modules folder and running yarn install again.

For more insights, updates, or to collaborate on AI development projects, stay connected with fxis.ai.

Conclusion

At fxis.ai, we believe that such advancements are crucial for the future of AI, as they enable more comprehensive and effective solutions. Our team is continually exploring new methodologies to push the envelope in artificial intelligence, ensuring that our clients benefit from the latest technological innovations.

Embark on this exciting journey of learning and development, and may your lottery application spark joy in every user that interacts with it!