From 3913cb0f7c9b34d1a833ef2991dc1ed6d0ee64ea Mon Sep 17 00:00:00 2001
From: Hea3veN <hea3venmc@gmail.com>
Date: Sun, 14 Dec 2014 10:09:16 -0300
Subject: [PATCH] allow robots to break blocks with hardness 0, fix #2198

---
 common/buildcraft/core/robots/AIRobotBreak.java | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/common/buildcraft/core/robots/AIRobotBreak.java b/common/buildcraft/core/robots/AIRobotBreak.java
index 3e1da4d1..bb4e53e3 100644
--- a/common/buildcraft/core/robots/AIRobotBreak.java
+++ b/common/buildcraft/core/robots/AIRobotBreak.java
@@ -55,14 +55,13 @@ public class AIRobotBreak extends AIRobot {
 
 	@Override
 	public void update() {
-		if (hardness == 0) {
-			// defensive code
-			terminate();
-			return;
+		if (hardness != 0) {
+		    blockDamage += speed / hardness / 30F;
+		} else {
+		    // Instantly break the block
+		    blockDamage = 1.1F;
 		}
 
-		blockDamage += speed / hardness / 30F;
-
 		if (blockDamage > 1.0F) {
 			robot.worldObj.destroyBlockInWorldPartially(robot.getEntityId(), blockToBreak.x,
 					blockToBreak.y, blockToBreak.z, -1);