How We Upgraded Our Limn Engine Playground Editor To Support Version 4

Description and use

Upgraded the Limn Engine playground editor to support Version 4 by adding V4 detection and mapping to epic.js for dynamic script injection.

Problem

The Limn Engine playground editor did not support the new Version 4 (epic.js) engine, preventing developers from accessing new features via the web-based editor.

Outcome

The playground editor now supports Version 4, enabling developers to access new particle systems and audio management features without backend changes.

Workflow

• 1. Download the core engine script epic.js from the official website and host it for runtime injection.
• 2. Update the editor’s scanner loop to include a check for 'V4' when iterating over all select elements.
• 3. Extend the script routing conditionals to match 'v4' and set engineScriptFile to the epic.js URL.
• 4. Test the editor by selecting V4 from the dropdown and verifying the game runs with new features.

Evidence

We added this check so that when the editor reads our UI elements, it officially registers Version 4 as a valid release option instead of skipping it.

Source

When a user selects v4 from the dropdown, this conditional matches the string and targets our newly hosted epic.js file for preview injection.

Source