Scriptblocks 2

Scriptblocks 2 is a Minetest mod and toy programming language using nodes called scriptblocks. Scriptblocks are nodes which can be used to build reusable programs.

Features

• Support for nested expressions and variables.
• Custom, named procedures with up to 2 named parameters and dynamic scoping.
• First-class lists, dictionaries, and lexically scoped closures with up to 1 named parameter.
• Coroutines, closures that can be paused and resumed.
• Processes can run for more than one tick.
• Ability to interface with digiline networks.

Experiments

• Spawnable processes, providing primitives for parallelism rather than just concurrency.
• Introspective blocks for debug purposes, such as one to report a string representation of the call stack.

These features can be accessed through the 'Enable Experiments' setting. Some of these features can cause a lot of lag, even with the limits that have been imposed. Others are only useful for debugging purposes. Either way, don't enable these on a public server!

First-class continuations have been moved to their own mod, SB2 Continuations.

Examples

This procedure calculates the factorial of a given number.

This procedure takes a list and a closure. It calls the closure for each item in the list, and reports the results in a new list.