PaperMC/nms-patches/BlockStem.patch

--- a/net/minecraft/server/BlockStem.java
+++ b/net/minecraft/server/BlockStem.java
@@ -2,6 +2,8 @@
 
 import java.util.Random;
 
+import org.bukkit.craftbukkit.event.CraftEventFactory; // CraftBukkit
+
 public class BlockStem extends BlockPlant implements IBlockFragilePlantElement {
 
     public static final BlockStateInteger AGE = BlockProperties.ai;
@@ -34,14 +36,18 @@
 
                 if (i < 7) {
                     iblockdata = (IBlockData) iblockdata.set(BlockStem.AGE, i + 1);
-                    worldserver.setTypeAndData(blockposition, iblockdata, 2);
+                    CraftEventFactory.handleBlockGrowEvent(worldserver, blockposition, iblockdata, 2); // CraftBukkit
                 } else {
                     EnumDirection enumdirection = EnumDirection.EnumDirectionLimit.HORIZONTAL.a(random);
                     BlockPosition blockposition1 = blockposition.shift(enumdirection);
                     IBlockData iblockdata1 = worldserver.getType(blockposition1.down());
 
                     if (worldserver.getType(blockposition1).isAir() && (iblockdata1.a(Blocks.FARMLAND) || iblockdata1.a(Blocks.DIRT) || iblockdata1.a(Blocks.COARSE_DIRT) || iblockdata1.a(Blocks.PODZOL) || iblockdata1.a(Blocks.GRASS_BLOCK))) {
-                        worldserver.setTypeUpdate(blockposition1, this.blockFruit.getBlockData());
+                        // CraftBukkit start
+                        if (!CraftEventFactory.handleBlockGrowEvent(worldserver, blockposition1, this.blockFruit.getBlockData())) {
+                            return;
+                        }
+                        // CraftBukkit end
                         worldserver.setTypeUpdate(blockposition, (IBlockData) this.blockFruit.d().getBlockData().set(BlockFacingHorizontal.FACING, enumdirection));
                     }
                 }
@@ -65,7 +71,7 @@
         int i = Math.min(7, (Integer) iblockdata.get(BlockStem.AGE) + MathHelper.nextInt(worldserver.random, 2, 5));
         IBlockData iblockdata1 = (IBlockData) iblockdata.set(BlockStem.AGE, i);
 
-        worldserver.setTypeAndData(blockposition, iblockdata1, 2);
+        CraftEventFactory.handleBlockGrowEvent(worldserver, blockposition, iblockdata1, 2); // CraftBukkit
         if (i == 7) {
             iblockdata1.b(worldserver, blockposition, worldserver.random);
         }