def coordsToDirn(fx,fy,fz,tx,ty,tz)#{{{
  fx = fx.to_i
  fy = fy.to_i
  fz = fz.to_i
  tx = tx.to_i
  ty = ty.to_i
  tz = tz.to_i
  if (fx - tx == -1) then str = 'East'
  elsif (fx - tx == 1) then str = 'West'
  elsif (fy - ty == -1) then str = 'North'
  elsif (fy - ty == 1) then str = 'South'
  elsif (fz - tz == -1) then str = 'Up'
  elsif (fz - tz == 1) then str = 'Down'
  else str = false
  end
  str
end#}}}
def dirnToCoords(x,y,z,dirn)#{{{
  case dirn.downcase
    when 'east'
      x = x + 1
    when 'west'
      x = x - 1
    when 'north'
      y = y + 1
    when 'south'
      y = y - 1
    when 'up'
      z = z + 1
    when 'down'
      z = z - 1
  end
  [x,y,z]
end#}}}
def oppositeDirn(dirn)#{{{
  {'east'=>'west','west'=>'east','north'=>'south','south'=>'north','up'=>'down','down'=>'up'}[dirn.downcase]
end#}}}
  def getLine#{{{
    desc = "\n"
    79.times { desc += "~" }
    desc += "\n\n"
    desc
  end#}}}