crocket

A Crystal wrapper for Rocket.

Still a work-in-progress, and a proof-of-concept. Caveat emptor!

An example project is available at nilsding/crocket_example.

Installation

Add the dependency to your shard.yml:

dependencies:
  crocket:
    github: nilsding/crocket

Run shards install. This will automatically build the librocket library as well (don't worry, it doesn't take long).

Usage

Usage should be similar to normal Rocket, but with a more Crystal-ish API.

require "crocket"

# Create a new SyncDevice
device = Crocket::SyncDevice.new("sync")

# Set up some callbacks
Crocket::SyncDevice.define_pause_callback do |should_pause|
  if should_pause
    audio_stream.pause
  else
    audio_stream.play
  end
end
Crocket::SyncDevice.define_set_row_callback do |row|
  seek_row_in_audio_stream(row)
end
Crocket::SyncDevice.define_is_playing_callback do
  audio_stream.playing?
end

# Connect to the Rocket editor
abort "failed to connect to host" unless device.tcp_connect("localhost")

# Get some tracks
clear_r = device["clear.r"]
clear_g = device["clear.g"]
clear_b = device["clear.b"]

loop do
  row = get_row_from_audio_stream
  unless device.update(row)
    device.tcp_connect("localhost")
  end

  # Do something with the values for the current row
  p [row, clear_r[row], clear_g[row], clear_b[row]]
end

# Save the tracks for later demo use
device.save_tracks

To compile your Crystal app with librocket in edit mode, simply run shards install.

For demo/playback mode where it reads the tracks from files you need to define the sync_player flag. This can be achieved via shards install -Dsync_player.

The edit mode methods are stubbed out when the app is compiled for demo mode. This means that you do not need to manually surround the relevant edit methods (e.g. #tcp_connect, #save_tracks, and the callbacks) with a {% if flag?(:sync_player) %} check.