termbox2

A tiny bindings shard plus a bit more for termbox2. Docs & comments & stuff stolen from there. The library is pretty cool except for a bunch of key event (key name) clashes which are too weird to even discuss, and the termbox2 devs aren't those to blame (it seems).

Installation

1. Add the dependency to your shard.yml:

   dependencies:
     termbox2:
       github: homonoidian/termbox2.cr

2. Run shards install

Usage

require "termbox2"

include Termbox
include Termbox::Event

Termbox.enable
# Can be changed to other modes dynamically, colors will
# scale with some effort. See `examples/hello.cr`
Termbox.set_output_mode(OutputMode::Truecolor)
Termbox.clear(bg: Color[0x11, 0x11, 0x11], fg: Color[0xec, 0xec, 0xec])

bg_1 = Color[0x11, 0x11, 0x11]
bg_2 = Color[0xa3, 0xa7, 0x2a]
cbg = bg_1
frametimer = 0
h = 0

# This guy will automatically Termbox.disable.
#
# If you won't use it, you'd have to Termbox.disable yourself.
Termbox.each(nap: 33.milliseconds) do |event|
  # can be nil or mouse event or resize event or key event
  if event.is_a?(KeyEvent)
    if event.char == 'q'
      break
    else
    end
  end
  Termbox.clear
  Termbox.print(
    x: Termbox.width // 2 - 10 + (-10..10).sample,
    y: Termbox.height // 2 + (-1..1).sample,
    fg: Color[h: h / 360, s: 0.5, l: 0.5],
    bg: cbg,
    object: "Going nuclear would be fun AF!!!",
  )

  if h > 360
    h = 0
  else
    h += 1
  end

  cbg =
    if frametimer > 10
      frametimer = 0
      if rand < 0.5
        bg_2
      else
        bg_1
      end
    else
      frametimer += 1
      cbg
    end

  Termbox.present
end

Development

TODO: Write development instructions here

Contributing

1. Fork it (https://github.com/homonoidian/termbox2.cr/fork)
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

Contributors

• Alexey Yurchenko - creator and maintainer