[ComputerCraft] Quarry: Central Computer

print(os.computerID())

xStart = 297
zStart = -1580

xEnd = 232
zEnd = -1539

qDist = 11
jobAvailable = true

xNextJob = xStart
zNextJob = zStart
yNextJob = 65

rednet.close("left")
rednet.open("left")

function setNextJob()
  xNextJob = xNextJob-qDist
  if xNextJob < xEnd then
    xNextJob = xStart
    zNextJob = zNextJob+qDist
    if zNextJob > zEnd then
      jobAvailable = false
    end
  end
end

-- Use this if you're facing north:
--  zNextJob = zNextJob-qDist
--  if zNextJob > zEnd then
--    zNextJob = zStart
--    xNextJob = xNextJob - qDist
--    if xNextJob < xEnd then
--      jobAvailable = false
--    end
--  end
--end

while jobAvailable do
  print("Waiting for quarry turtle")
  id, message, dist = rednet.receive()

  print("Turtle "..id.." needs a job")

  if message == "getJob" then
    print("Job available at "..xNextJob.." "..zNextJob)
    rednet.send(id, "yes")

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

    setNextJob()
  end
end
print("No jobs available")
while true do
  id, message, dist = rednet.receive()
  if message == "getJob" then
    rednet.send(id, "no")
  end
end