--- a/net/minecraft/world/level/block/BlockDoor.java
+++ b/net/minecraft/world/level/block/BlockDoor.java
@@ -33,6 +33,8 @@
 import net.minecraft.world.phys.shapes.VoxelShape;
 import net.minecraft.world.phys.shapes.VoxelShapeCollision;
 
+import org.bukkit.event.block.BlockRedstoneEvent; // CraftBukkit
+
 public class BlockDoor extends Block {
 
     public static final BlockStateDirection FACING = BlockFacingHorizontal.FACING;
@@ -191,9 +193,24 @@
 
     @Override
     public void neighborChanged(IBlockData iblockdata, World world, BlockPosition blockposition, Block block, BlockPosition blockposition1, boolean flag) {
-        boolean flag1 = world.hasNeighborSignal(blockposition) || world.hasNeighborSignal(blockposition.relative(iblockdata.getValue(BlockDoor.HALF) == BlockPropertyDoubleBlockHalf.LOWER ? EnumDirection.UP : EnumDirection.DOWN));
+        // CraftBukkit start
+        BlockPosition otherHalf = blockposition.relative(iblockdata.getValue(BlockDoor.HALF) == BlockPropertyDoubleBlockHalf.LOWER ? EnumDirection.UP : EnumDirection.DOWN);
+
+        org.bukkit.World bworld = world.getWorld();
+        org.bukkit.block.Block bukkitBlock = bworld.getBlockAt(blockposition.getX(), blockposition.getY(), blockposition.getZ());
+        org.bukkit.block.Block blockTop = bworld.getBlockAt(otherHalf.getX(), otherHalf.getY(), otherHalf.getZ());
+
+        int power = bukkitBlock.getBlockPower();
+        int powerTop = blockTop.getBlockPower();
+        if (powerTop > power) power = powerTop;
+        int oldPower = (Boolean) iblockdata.getValue(BlockDoor.POWERED) ? 15 : 0;
+
+        if (oldPower == 0 ^ power == 0) {
+            BlockRedstoneEvent eventRedstone = new BlockRedstoneEvent(bukkitBlock, oldPower, power);
+            world.getCraftServer().getPluginManager().callEvent(eventRedstone);
 
-        if (!this.defaultBlockState().is(block) && flag1 != (Boolean) iblockdata.getValue(BlockDoor.POWERED)) {
+            boolean flag1 = eventRedstone.getNewCurrent() > 0;
+            // CraftBukkit end
             if (flag1 != (Boolean) iblockdata.getValue(BlockDoor.OPEN)) {
                 this.playSound(world, blockposition, flag1);
                 world.gameEvent(flag1 ? GameEvent.BLOCK_OPEN : GameEvent.BLOCK_CLOSE, blockposition);