PaperMC/nms-patches/BlockRedstoneLamp.patch

--- ../work/decompile-8eb82bde//net/minecraft/server/BlockRedstoneLamp.java	2014-11-28 11:22:55.762823167 +0000
+++ src/main/java/net/minecraft/server/BlockRedstoneLamp.java	2014-11-28 11:01:54.000000000 +0000
@@ -2,6 +2,8 @@
 
 import java.util.Random;
 
+import org.bukkit.craftbukkit.event.CraftEventFactory; // CraftBukkit
+
 public class BlockRedstoneLamp extends Block {
 
     private final boolean a;
@@ -20,6 +22,11 @@
             if (this.a && !world.isBlockIndirectlyPowered(blockposition)) {
                 world.setTypeAndData(blockposition, Blocks.REDSTONE_LAMP.getBlockData(), 2);
             } else if (!this.a && world.isBlockIndirectlyPowered(blockposition)) {
+                // CraftBukkit start
+                if (CraftEventFactory.callRedstoneChange(world, blockposition.getX(), blockposition.getY(), blockposition.getZ(), 0, 15).getNewCurrent() != 15) {
+                    return;
+                }
+                // CraftBukkit end
                 world.setTypeAndData(blockposition, Blocks.LIT_REDSTONE_LAMP.getBlockData(), 2);
             }
 
@@ -31,6 +38,11 @@
             if (this.a && !world.isBlockIndirectlyPowered(blockposition)) {
                 world.a(blockposition, (Block) this, 4);
             } else if (!this.a && world.isBlockIndirectlyPowered(blockposition)) {
+                // CraftBukkit start
+                if (CraftEventFactory.callRedstoneChange(world, blockposition.getX(), blockposition.getY(), blockposition.getZ(), 0, 15).getNewCurrent() != 15) {
+                    return;
+                }
+                // CraftBukkit end
                 world.setTypeAndData(blockposition, Blocks.LIT_REDSTONE_LAMP.getBlockData(), 2);
             }
 
@@ -40,6 +52,11 @@
     public void b(World world, BlockPosition blockposition, IBlockData iblockdata, Random random) {
         if (!world.isStatic) {
             if (this.a && !world.isBlockIndirectlyPowered(blockposition)) {
+            // CraftBukkit start
+            if (CraftEventFactory.callRedstoneChange(world, blockposition.getX(), blockposition.getY(), blockposition.getZ(), 15, 0).getNewCurrent() != 0) {
+                return;
+            }
+            // CraftBukkit end
                 world.setTypeAndData(blockposition, Blocks.REDSTONE_LAMP.getBlockData(), 2);
             }