Quarry - Manager

--[[
xStart and zStart are where the first
end of all the quarries will be dug.  xEnd
and zEnd are where the second end of all
the quarries will be dug.  yStart is the
starting point of the height of each
quarry. qDist is how far apart each quarry
is. Make sure this is at least the size
of the quarry.  For each time one is added
to this number another block will be put
in between quarries.
]]--

xStart = 0
zStart = 0
yStart = 70

xEnd = 0
zEnd = 0

qDist = 11

-- Program

jobAvailable = true
xNextJob = xStart
zNextJob = zStart
yNextJob = yStart

local function openRednet()
  for _,side in ipairs(rs.getSides()) do
    if peripheral.isPresent(side) and peripheral.getType(side) == "modem" then
      rednet.open(side)
      return side
    end
  end
end

openRednet()

print("Quarry Started.")

function setNextJob()
  xNextJob = xNextJob - qDist
  if zNextJob < zEnd then
    zNextJob = zStart
    xNextJob = xNextJob - qDist
    if xNextJob < xEnd then
      jobAvailable = false
      print("Quarry Finished.")
    end
  end
end

while jobAvailable do

  id, message, dist = rednet.receive()
  if message == "getJob" then
    rednet.send(id, "yes")

    rednet.send(id, tostring(xNextJob))
    rednet.send(id, tostring(zNextJob))
    rednet.send(id, tostring(yNextJob))

    setNextJob()
  end
end

while true do
  id, message, dist = rednet.receive()

  if message == "getJob" then
    rednet.send(id, "no")
  end
end