Turtle Mining - Master

rednet.open("right")
lastID = 0
turtleCount = 0
for i=1, turtle.getItemCount(1) do
    turtle.place()
    p = peripheral.wrap("front")
    p.turnOn()
    rednet.send(p.getID(), "start")
    lastID = p.getID()
    turtleCount = i
    sleep(2)
end

print("Send all turtles off. Waiting for turtle "..lastID.." to send ready.")

lastTurtleReady = false
while lastTurtleReady == false do
    sender, msg = rednet.receive()
    if msg == "turtleReady" and sender == lastID then
        lastTurtleReady = turtleReady
    end
end

print("All turtles ready! How far shall they go?")
distance = read()
rednet.broadcast(distance, "TurtleDig")
print("Send info to mining turtles, waiting for last one to finish.")

turtlesDone = 0
while turtlesDone < turtleCount do
    sender, msg = rednet.receive()
    if msg == "turtleMined"..distance then
        turtlesDone = turtlesDone + 1
    end
end

for i=1, distance do
    turtle.forward()
end

print("Finished! Sending turtles back...")
rednet.broadcast("packup", "MiningTurtle")

turtlesCleanedOut = 0
while turtlesCleanedOut < turtleCount do
    sender, msg, protocall = rednet.receive()
    if protocall == "cleaned" and msg == "done" then
        turtlesCleanedOut = turtlesCleanedOut + 1
    end
end

turtle.dig()
print("Cleaned all turtles out.")