diff --git a/mine.lua b/mine.lua
index f6ef302..18b2598 100644
--- a/mine.lua
+++ b/mine.lua
@@ -168,7 +168,7 @@ function move (v)
         turnToFace(LEFT)
         moveInLine(-v.x)
     end
-    mode.v = mode.v + UNIT_X
+    mode.v.x = mode.v.x + v.x
     -- z
     if v.z > 0 then
         turnToFace(FORWARD)
@@ -178,10 +178,10 @@ function move (v)
         turnToFace(BACK)
         moveInLine(-v.z)
     end
-    mode.v = mode.v + UNIT_Z
+    mode.v.z = mode.v.z + v.z
     -- y
     moveUpDown(v.y)
-    mode.v = mode.v + UNIT_Y
+    mode.v.y = mode.v.y + v.y
 end
 
 -------------- DROPPING OFF AND REFUELING -------------------
@@ -302,31 +302,6 @@ function process (stack, starting_point)
     return process (stack)
 end
 
-function calculateBlock (v1, v2)
-    -- Using the coordinates, construct a block of certain dimensions, a
-    -- certain distance away.
-    local block = {}
-    local normalize = function (dim, c1, c2)
-        -- pick the closest point
-        -- offset goes to the other point
-        local corner, offset
-        if math.abs(c1) <= math.abs(c2) then
-            corner, offset = c1, c2 - c1
-        else
-            corner, offset = c2, c1 - c2
-        end
-        block[dim] = corner
-        block[dim .. "off"] = offset
-    end
-    normalize("x", v1.x, v2.x)
-    normalize("y", v1.y, v2.y)
-    normalize("z", v1.z, v2.z)
-    return new_block(
-        vector.new(block.x, block.y, block.z),
-        vector.new(block.xoff, block.yoff, block.zoff)
-    )
-end
-
 function run (v1, v2)
     -- TODO calculate starting_point, the place turtle will move to before
     -- moving to the first corner of block