--declaring variables
turtdir = 0
glowy = 0
glowx = 0
print "This will mine a predefined pattern of blocks. Use after vertshaft or stairshaft."
print "All values are positive integers."
print "Fuel in slot 16, torches in slot 15."
print "How wide is this mine?(x) !MUST BE AN ODD NUMBER!"
x = io.read()
x = tonumber(x)
print "How far forward? (y)"
y = io.read()
y = tonumber(y)
y = y-1
print "How high? (z)"
z = io.read()
z = tonumber(z)
z = z-1
print "Press any key to run."
os.pullEvent("char")
-- origins
sxo = x/2
sxo = math.ceil(sxo)
syo = y/2
syo = math.ceil(syo)
-- sxo and syo is used to find the turtle's start point. It is crucial that x be odd for this to work right.
xo = 0
yo = 0
zo = 0
setup = sxo/2
setup = math.ceil(setup)
-- declaring functions
function checkFuel()
if turtle.getFuelLevel() <= z*2+2 then
turtle.select(16)
turtle.refuel(1)
end
end

function moveForward()
checkFuel()
repeat
turtle.dig()
until turtle.forward()
end

function mineUp()
if zo == 0 then
for i = 1,z do
checkFuel()
repeat
turtle.digUp()
until turtle.up()
zo = zo+1
end
end
end

function mineDown()
if zo ~= 0 then
repeat
checkFuel()
repeat
turtle.digDown()
until turtle.down()
zo = zo-1
until zo == 0
end
end

function checka()
if turtle.getItemCount(14) >= 1 then
turtle.turnLeft()
for i = 1,yo do
moveForward()
checkFuel()
end
for i = 1,14 do
turtle.select(i)
turtle.drop()
end
turtle.turnLeft()
turtle.turnLeft()
for i = 1,yo do
moveForward()
checkFuel()
end
turtle.turnLeft()
turtle.select(1)
end
end

function checkb()
if turtle.getItemCount(14) >= 1 then
turtle.turnRight()
for i = 1,yo do
moveForward()
checkFuel()
end
for i = 1,14 do
turtle.select(i)
turtle.drop()
end
turtle.turnLeft()
turtle.turnLeft()
for i = 1,yo do
moveForward()
checkFuel()
end
turtle.turnRight()
turtle.select(1)
end
end

function torch()
if glowx > 6 or glowx < 0 then
glowx = 0
end
if glowy == 5 and glowx == 6 then
turtle.turnLeft()
turtle.turnLeft()
turtle.select(15)
turtle.place()
turtle.turnRight()
turtle.turnRight()
glowx = glowx-glowx
end
end

-- setting up to align
turtle.turnLeft()
for i = 1,setup do
mineUp()
moveForward()
mineDown()
moveForward()
end
turtle.turnLeft()
turtle.turnLeft()
mineUp()
mineDown()
for i = 1,setup do
moveForward()
end
for i = 1,setup do
moveForward()
mineUp()
moveForward()
mineDown()
end
-- and finally, on line 147, we have reached the main loop.
for i = 1,syo do
turtdir = 1
checkb()
turtle.turnLeft()
moveForward()
yo = yo+1
if glowy == 6 then
glowy = glowy-glowy
end
glowy = glowy+1
turtle.turnLeft()
for a = 1,sxo-1 do
mineUp()
moveForward()
glowx = glowx+1
xo = xo+1
mineDown()
moveForward()
xo = xo+1
glowx = glowx+1
torch()
end
turtdir = 2
checka()
turtle.turnRight()
mineUp()
mineDown()
moveForward()
yo = yo+1
if glowy == 6 then
glowy = glowy-glowy
end
glowy = glowy+1
turtle.turnRight()
for b = 1,sxo-1 do
mineUp()
moveForward()
xo = xo-1
glowx = glowx-1
mineDown()
moveForward()
xo = xo-1
glowx = glowx-1
torch()
end
mineUp()
mineDown()
end
if turtdir == 1 then
turtle.turnLeft()
for i = 1,yo do
moveForward()
checkFuel()
end
for i = 1,16 do
turtle.select(i)
turtle.drop()
end
end
if turtdir == 2 then
turtle.turnRight()
for i = 1,yo do
moveForward()
checkFuel()
end
for i = 1,16 do
turtle.select(i)
turtle.drop()
end
end