WFTDA Rules calculation for jammers time to serve, according to Rule 7.3 http://wftda.com/rules/20130101/section/7.3

jammers.rb

#!/usr/bin/env ruby

# seconds of penalty assignment
# you may pass these in on the commandline so:
# => ./jammers.rb 120 60
jammerA = ARGV[0] ? ARGV[0].to_i : 60
jammerB = ARGV[1] ? ARGV[1].to_i : 60

t = rand(0..jammerA) # => random number between 0 and the maximum time for jammerA

# calculate remaining time
jAremain = jammerA - t
jBremain = jammerB # => assign full value, no time has been served

if jAremain < jBremain == true
  rule = "7.3, 7.3.10.1"
  jAfinal = 0 # => reduce this jammer's time to 0
  jBfinal = jBremain - jAremain # => reduce the time remaining by time served by other jammer
elsif jAremain >= jBremain == true
  rule = "7.3.10"
  jAfinal = jAremain - 60
  jBfinal = 0
else
  puts "unhandled calculation, should never see this message"
end

def resultmsg(result)
  case result
  when 0
    "Jammer may be released"
  else
    "Jammer must serve #{result} seconds"
  end
end

puts "We started with Jammer A serving #{jammerA} seconds, and has served #{t} seconds."
puts "Then Jammer B arrives with #{jammerB} seconds to serve."

puts "Let's see what our Jammers should do:"
puts "- Jammer A: #{resultmsg(jAfinal)}"
puts "- Jammer B: #{resultmsg(jBfinal)}"
puts "rule referenced: #{rule}"