From 7df7778ccb13aab76f672f06eea021d2d6020808 Mon Sep 17 00:00:00 2001
From: GJ <gjmcferrin@gmail.com>
Date: Sun, 26 Jan 2014 01:05:27 -0800
Subject: [PATCH] [Bleeding] Call BlockRedstoneEvent for all rails. Adds
 BUKKIT-4080

Previously, Detector Rails were the only rails that properly called
BlockRedstoneEvent when they changed from powered to unpowered. This commit
adds BlockRedstoneEvent calls for both Powered Rails and Activator Rails.
---
 .../net/minecraft/server/BlockPoweredRail.java   | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/main/java/net/minecraft/server/BlockPoweredRail.java b/src/main/java/net/minecraft/server/BlockPoweredRail.java
index aa84a975ad..cd20905862 100644
--- a/src/main/java/net/minecraft/server/BlockPoweredRail.java
+++ b/src/main/java/net/minecraft/server/BlockPoweredRail.java
@@ -1,5 +1,7 @@
 package net.minecraft.server;
 
+import org.bukkit.craftbukkit.event.CraftEventFactory; // CraftBukkit
+
 public class BlockPoweredRail extends BlockMinecartTrackAbstract {
     protected BlockPoweredRail() {
         super(true);
@@ -115,9 +117,21 @@ public class BlockPoweredRail extends BlockMinecartTrackAbstract {
         boolean flag1 = false;
 
         if (flag && (l & 0x8) == 0) {
+            // CraftBukkit start
+            if (CraftEventFactory.callRedstoneChange(world, i, j, k, 0, 15).getNewCurrent() <= 0) {
+                return;
+            }
+            // CraftBukkit end
+
             world.setData(i, j, k, i1 | 0x8, 3);
             flag1 = true;
         } else if (!flag && (l & 0x8) != 0) {
+            // CraftBukkit start
+            if (CraftEventFactory.callRedstoneChange(world, i, j, k, 15, 0).getNewCurrent() > 0) {
+                return;
+            }
+            // CraftBukkit end
+
             world.setData(i, j, k, i1, 3);
             flag1 = true;
         }
@@ -129,4 +143,4 @@ public class BlockPoweredRail extends BlockMinecartTrackAbstract {
             }
         }
     }
-}
\ No newline at end of file
+}