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#!/usr/bin/env ruby
def plane
(('A'..'Z').to_a.sample(rand(2) + 2) +
(0..9).to_a.sample(rand(2) + 3)).join +
(rand(3) == 0 ? " heavy" : "")
end
def heading
"%03d" % (rand(72) * 5)
end
def level
rand(32) + 7
end
def altitude
(rand(6) + 1) * 1000
end
def please
"please #{%w(climb descend).sample} flight level #{level}"
end
def beacon
c = %w(B C D F G H J K L M N P Q R S T V W X Z)
v = %w(A E I O U Y)
case rand(4)
when 0
c.sample + v.sample + c.sample
when 1
c.sample + v.sample + c.sample + v.sample + c.sample
when 2
c.sample + v.sample + c.sample + c.sample + v.sample
when 3
c.sample + c.sample + v.sample
end
end
def digit?
d = rand(5)
d = "" if d.zero?
d.to_s
end
def route
c = %w(B C D F G H J K L M N P Q R S T V W X Z)
v = %w(A E I O U Y)
case rand(2)
when 0
c.sample + v.sample + c.sample + v.sample + c.sample + digit?
when 1
c.sample + v.sample + c.sample + c.sample + v.sample + digit?
end
end
def runway
"#{rand(36) + 1}#{%w(_ _ L L L C R R R).sample.gsub(/_/, "")}"
end
def clearance
"cleared to " +
case rand(6)
when 0
"heading #{heading}"
when 1
"flight level #{level}"
when 2
"#{altitude} feet"
when 3
beacon
when 4
"land runway #{runway}"
when 5
"take off runway #{runway}"
end
end
def localizer?
case rand(3)
when 0
" until established on the localizer"
when 1..2
""
end
end
def maintain
"maintain #{altitude} feet#{localizer?}"
end
def vectors
case rand(2)
when 0
"expect vectors for the #{%w(ILS RNAV).sample} runway #{runway}"
when 1
"join the localizer runway #{runway}"
end
end
def proceed
"#{%w(proceed fly).sample} direct #{beacon}"
end
def location
%w(
ground
delivery
departure
arrival
tower
tracks
).sample
end
def frequency
(rand(13) + 118) +
(rand(200) / 200.0)
end
def contact
"contact #{location} on #{frequency}"
end
def monitor
"monitor #{frequency}"
end
def turn
case rand(3)
when 0
"turn left heading #{heading}#{localizer?}"
when 1
"turn heading #{heading}#{localizer?}"
when 2
"turn right heading #{heading}#{localizer?}"
end
end
def radar
"radar contact"
end
def transition?
", #{runway} transition"
end
def star
case rand(3)
when 0
"descend via #{route}"
when 1
"join the #{route} arrival"
when 2
"descend on the #{route} arrival"
end
end
def sid
"proceed direct #{beacon}, join the #{route} departure"
end
def sentence
plane + " " +
case rand(21)
when 0
please
when 1
proceed
when 2
contact
when 3
monitor
when 4..9
clearance
when 10..12
turn
when 13
radar
when 14..15
star
when 16..17
sid
when 18..19
vectors
when 20
maintain
end
end
require 'faye/websocket'
Faye::WebSocket.load_adapter('thin')
webpage = File.read("planed.html")
App = lambda do |env|
if Faye::WebSocket.websocket?(env)
ws = Faye::WebSocket.new(env)
ws.on(:message) do |ev|
ws.send(sentence)
end
ws.rack_response
else
[200, { 'Content-Type' => 'text/html' }, [webpage]]
end
end
run App
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