Implementing Text Search and Highlighting in Unity’s Browser-Based UI
1. Setting Up a WebGL Project in Unity
To begin with, ensure your Unity project is set up for WebGL deployment. Unity allows you to create browser-based games, which is essential for implementing any web-dependent UI features.
2. Utilizing JavaScript for Text Search and Highlighting
Since Unity’s WebGL builds run in the browser, you can integrate JavaScript to handle complex web operations, such as text search and highlighting. Here’s a basic approach to implementing this feature:
Enjoy the gaming experience!
JavaScript Code
function searchAndHighlightText(keyword) { var bodyText = document.body.innerHTML; var highlightStartTag = ''; var highlightEndTag = ''; var newText = bodyText.replace(new RegExp('('+ keyword +')', 'gi'), highlightStartTag + '$1' + highlightEndTag); document.body.innerHTML = newText; }3. Unity and JavaScript Interfacing
Use Unity’s Application.ExternalCall or Application.ExternalEval to invoke the JavaScript function from your Unity scripts:
Unity C# Script
using UnityEngine; public class TextSearch : MonoBehaviour { public void SearchText(string keyword) { Application.ExternalCall("searchAndHighlightText", keyword); } }4. Responsive UI Design
Ensure that your UI is responsive to different device sizes. Use CSS media queries to manage visual elements dynamically. This ensures that highlighted text is visible regardless of the screen size or orientation.
5. Testing and Optimization
After implementing the feature, thoroughly test it across different browsers to ensure compatibility. You may need to optimize performance by minimizing DOM operations and using optimized search algorithms, especially for large text bodies.