Only rotate after each slice in VolumeExcavationController if our width is > 1

controller/volume_excavation_controller.lua

@@ -50,7 +50,7 @@ function VolumeExcavationController:Excavate()
     self.controller:MoveRelative(self.config.mine_right)
     self.controller:TurnToDirection(Direction.WEST)
 
-    -- Zig zag mine back to front
+    -- Zig zag mine the full width from back to front
     -- The direction is important so we can travel to start without colliding with unminded walls
     local turn_dir = 1
     for i = 1,self.config.mine_forward do
@@ -62,9 +62,12 @@ function VolumeExcavationController:Excavate()
             break
         end
 
-        self.controller:TurnRelative(turn_dir)
-        self.controller:MoveRelative(1)
-        self.controller:TurnRelative(turn_dir)
+        -- Skip the turning if we're mining in a straight line
+        if self.config.mine_left + self.config.mine_right > 0 then
+            self.controller:TurnRelative(turn_dir)
+            self.controller:MoveRelative(1)
+            self.controller:TurnRelative(turn_dir)
+        end
 
         turn_dir = -1 * turn_dir
     end