Added host side command for quarrying.

mineleader.lua

@@ -12,7 +12,7 @@ local MOVETO = "moveto"
 local STATUS = "status"
 local POSITION = "position"
 local HEADING = "heading"
-local QUARRYCHUNK = "quarry"
+local QUARRY = "quarry"
 local TASK = "task"
 local FAILED = "failed"
 -- Constant messaging
@@ -421,8 +421,10 @@ local function quarry(x, y, z, forward, right, pattern)
 		end
 		if (y > 0) then
 			attemptMoveUp();
-		elseif (y < 0) then
-			attemptMoveDown();
+		else
+			if not attemptMoveDown() then
+				sendLog(FAILED, "Unable to move further down for quarrying.")
+			end
 		end
 	end
 end
@@ -515,7 +517,9 @@ local function listen()
 			elseif data["request"] == QUARRY then
 				if heading ~= nil then
 					quarry(data["content"][1], data["content"][2], data["content"][3], heading, rightAxis)
+					sendLog(QUARRY, "Using actual position for quarrying.")
 				else
+					sendLog(QUARRY, "Using relative position for quarrying.")
 					quarry(data["content"][1], data["content"][2], data["content"][3], relHeading, relRightAxis)
 				end
 			end