From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Noah van der Aa <ndvdaa@gmail.com>
Date: Mon, 20 Jun 2022 15:46:46 +0200
Subject: [PATCH] Call StructureGrowEvent for mangrove propagule


diff --git a/src/main/java/net/minecraft/world/level/block/MangrovePropaguleBlock.java b/src/main/java/net/minecraft/world/level/block/MangrovePropaguleBlock.java
index 4eaf75ef7362ee781762f5e8def6bc4d986e9db7..0a60918ec9b2374cd9ae375a8d36ed1a212c19ae 100644
--- a/src/main/java/net/minecraft/world/level/block/MangrovePropaguleBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/MangrovePropaguleBlock.java
@@ -90,7 +90,28 @@ public class MangrovePropaguleBlock extends SaplingBlock implements SimpleWaterl
     public void randomTick(BlockState state, ServerLevel world, BlockPos pos, RandomSource random) {
         if (!isHanging(state)) {
             if (random.nextInt(7) == 0) {
+                world.captureTreeGeneration = true; // Paper
                 this.advanceTree(world, pos, state, random);
+                // Paper start
+                world.captureTreeGeneration = false;
+                if (world.capturedBlockStates.size() > 0) {
+                    org.bukkit.TreeType treeType = SaplingBlock.treeType;
+                    SaplingBlock.treeType = null;
+                    org.bukkit.Location location = new org.bukkit.Location(world.getWorld(), pos.getX(), pos.getY(), pos.getZ());
+                    java.util.List<org.bukkit.block.BlockState> blocks = new java.util.ArrayList<>(world.capturedBlockStates.values());
+                    world.capturedBlockStates.clear();
+                    org.bukkit.event.world.StructureGrowEvent event = null;
+                    if (treeType != null) {
+                        event = new org.bukkit.event.world.StructureGrowEvent(location, treeType, false, null, blocks);
+                        org.bukkit.Bukkit.getPluginManager().callEvent(event);
+                    }
+                    if (event == null || !event.isCancelled()) {
+                        for (org.bukkit.block.BlockState blockstate : blocks) {
+                            blockstate.update(true);
+                        }
+                    }
+                }
+                // Paper end
             }
 
         } else {