JCM v2.1.0-beta.2 for MTR 4.0.2 has been released!

Note: Normal players are strongly advised to wait until the official release of v2.1.0.

New (Scripting Implementation)

Scripting Engine

• Update to Rhino 1.8.1 (Minecraft 1.17+) & Rhino 1.7.15.1 (Minecraft 1.16.5)
• • Fix a problem with formatting of floating-point numbers to strings that may result in very bad performance in some cases. (Rhino Changelog)

Execution

• Scripts may now execute across 4 different threads (Instead of only 1 background thread), which should improve the amount of scripts that can be executed simultaneously. (zbx1425 for the idea)

Networking

• Breaking change: A failed HTTP request via the Networking class no longer throws an exception.
• • Use NetworkResponse.success() to check whether the request succeeded
• • Use NetworkResponse.exception() to get the raw java exception.
• Add NetworkResponse.ok() to check whether the response code returned by the server is successful. (HTTP Request Code >= 200 & <= 299)

Eyecandy Scripting

• Add EyecandyBlockEntity.redstoneSignal() to process redstone signal in the block.
• • Note: This only returns 0 and 15 (lit & unlit) with the current implementation. Scripts should however account for future changes, where the true signal level is returned.
• Experimental: Add EyecandyBlockEntity.setCollisionShape() to set the client-side collision shape of the block.
• • At most 1x1x1 (16x16x16 block unit), anything higher may cause the collision shape to not work as intended.

Download:
You can download this release on Modrinth, CurseForge or GitHub