3D live coding, implemented in Nim.

Enu lets you build and explore worlds using a familiar block-building interface and a Logo inspired API. It aspires to make 3D development more accessible, and will eventually be usable to create sandalone games.

Enu isn't ready for public testing, but it's getting close. MacOS, PC and Linux version of Enu 0.1 should be ready on Friday, Nov. 6th 2020.

See the Enu 0.1 demo video:

• Enu 0.01 Intro and Demo
• Introducing Enu - NimConf 2020

Draw a square:

forward 10
right 10
back 10
left 10

or:

4.times:
  forward 10
  turn_right()

Create a twisting tower:

var
  length = 20
  height = 50

height.times:
  left length / 2
  back length / 2
  4.times:
    forward length
    turn_right()
  forward length / 2
  right length / 2
  turn_right 5
  up()

Draw randomly:

up 10
forward 10
(50..100).times:
  forward 2..5
  turn_right -180..180
  up 0..2

Set the color to blue randomly with a 1 in 50 chance. Otherwise set it to white:

if 1 in 50:
  color = blue
else:
  color = white

or as a one-liner:

color = if 1 in 50: blue else: white

Move forward 10 times, cycling through colors:

for i in 0..9:
  next_color()
  forward()

or:

10.times:
  color = cycle(red, black, blue)
  forward()

Download from https://github.com/dsrw/enu/releases. The Windows version isn't signed, and UAC will warn that it's untrusted. This will be fixed in a future release.

Linux isn't currently supported. It should be possible to build and run, but there will be breaking bugs and missing features. This will be addressed soon.

The world format will change in a future release. Worlds created in 0.1 won't be supported in future versions.

$ nimble prereqs
$ nimble build
$ nimble edit

When Godot has finished importing assets, you can launch Enu with the play button, F5, or with nimble start.

Enu requires a custom Godot version, which lives in vendor/godot. This will be fetched and built as part of nimble prereqs.

See https://docs.godotengine.org/en/3.2/development/compiling/index.html

• ESC - toggle mouse capture and to dismiss editor windows. Reloads script changes.
• W, A, S, D - move around when mouse is captured.
• Space - jump. Double jump to toggle flying. Hold to go up while flying.
• Shift - run.
• C - go down while flying.
• ~ - toggle the console.
• F - toggle fullscreen.
• 1 - enter edit mode.
• 2 - 9 - change active action.
• Mouse Wheel Up/Down - change active action.
• Ctrl - reload script changes. Hold to temporarily capture the mouse and move, so you can change your view without having to switch away from what you're doing.
• Cmd+P / Ctrl+P - Pause the current script.
• Left Click - Place a block/object or open the code for the currently selected object.
• Right Click - Remove a block/object.

• Left Stick - move.
• Right Stick - change view.
• A / X - jump. Double jump to toggle flying. Hold to go up while flying.
• B / ◯ - go down while flying. Dismiss code editor.
• Y / △ - toggle edit mode.
• L1 / R1 - change active action.
• L2 - place a block/object or open the code for the currently selected object.
• R2 - remove a block/object.
• L3 - run.

Enu currently includes 5 block types/colors, and 1 object model (a robot). This will be greatly expanded in the future.

The Enu data directory lives in ~/Library/Application Support/Enu on Mac, and %AppData%\Enu on Windows. config.json has a few configurable options:

downscale: Increase to render at a lower resolution to improve performance. Should be an integer.

font_size: The font size. DPI is currently ignored, so hidpi screens will require a higher number.

dock_icon_size: Size of the icons in the dock. DPI is currently ignored, so hidpi screens will require a higher number.

world: The world/project to load. Change this to create a new world.

show_stats: Show FPS and other stats.

• Validate under Linux
• Linux install task