From 28e083f034d13e3bef377d199d1291248cc72e75 Mon Sep 17 00:00:00 2001
From: LDDestroier <etheilig02@gmail.com>
Date: Mon, 12 Nov 2018 14:30:27 -0500
Subject: [PATCH] Create cubedig.lua

---
 cubedig.lua | 119 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 cubedig.lua

diff --git a/cubedig.lua b/cubedig.lua
new file mode 100644
index 0000000..939b544
--- /dev/null
+++ b/cubedig.lua
@@ -0,0 +1,119 @@
+-- Turtle program that digs a rectangular area.
+
+local tArg = {...}
+
+local dx = tonumber(tArg[1])
+local dy = tonumber(tArg[2])
+local dz = tonumber(tArg[3])
+
+-- relative position, used for printing a graphic
+local pos = {
+	x = 0,
+	y = 0,
+	z = 0,
+	f = 0
+}
+
+assert(dx, "Invalid X input.")
+assert(dy, "Invalid X input.")
+assert(dz, "Invalid X input.")
+
+-- done to offset the fact that the turtle occupies the rectangle it'll dig out, usually
+dz = dz - 1
+
+local dig = function(direction)
+	if direction == -1 then 			-- down
+		while turtle.inspectDown() do
+            turtle.digDown()
+        end
+	elseif direction == 1 then			-- up
+		while turtle.inspectUp() do
+            turtle.digUp()
+        end
+	else								-- forwards
+		while turtle.inspect() do
+			turtle.dig()
+		end
+	end
+end
+
+local move = function(direction)
+	if direction == "up" then
+		turtle.up()
+		pos.y = pos.y + 1
+	elseif direction == "down" then
+		turtle.down()
+		pos.y = pos.y - 1
+	elseif direction == "forward" then
+		turtle.forward()
+		pos.x = pos.x + math.cos(math.rad(pos.f * 90))
+	elseif direction == "back" then
+        turtle.forward()
+        pos.x = pos.x - math.cos(math.rad(pos.f * 90))
+	elseif direction == "left" then
+		pos.f = (pos.f - 1) % 4
+	elseif direction == "right" then
+		pos.f = (pos.f + 1) % 4
+	end
+end
+
+local turn = function(dir, doDig)
+	if dir then
+		move( "right" )
+		if doDig then
+			dig( 0 )
+			move( "forward" )
+		end
+		move( "right" )
+	else
+		move( "left" )
+		if doDig then
+			dig( 0 )
+			move( "forward" )
+		end
+		move( "left" )
+	end
+end
+
+local printData = function()
+	local dirs = {
+		[0] = "Forwards",
+		[1] = "Right",
+		[2] = "Backwards",
+		[3] = "Left"
+	}
+	term.clear()
+	term.setCursorPos(1,1)
+	write("Relative Pos.: (")
+	write(pos.x .. ", ")
+	write(pos.y .. ", ")
+	print(pos.z .. ")")
+	print("Relative dir.: " .. dirs[pos.f])
+	print("Fuel: " .. turtle.getFuelLevel())
+end
+
+local doTurn = true
+for y = 1, math.abs(dy) do
+	for x = 1, dx do
+		for z = 1, dz do
+			dig( 0 )
+			move( "forward" )
+			printData()
+		end
+		turn(doTurn, x < dx)
+		printData()
+		if x < dx then
+			doTurn = not doTurn
+		end
+	end
+	if y ~= math.abs(dy) then
+		if dy > 0 then
+			dig( 1 )
+			move( "up" )
+		else
+			dig( -1 )
+			move( "down" )
+		end
+		printData()
+	end
+end