Paper/nms-patches/BlockTurtleEgg.patch

--- a/net/minecraft/server/BlockTurtleEgg.java
+++ b/net/minecraft/server/BlockTurtleEgg.java
@@ -2,6 +2,12 @@
 
 import java.util.Random;
 import javax.annotation.Nullable;
+import org.bukkit.craftbukkit.block.CraftBlock;
+
+// CraftBukkit start
+import org.bukkit.event.entity.EntityInteractEvent;
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+// CraftBukkit end
 
 public class BlockTurtleEgg extends Block {
 
@@ -35,6 +41,19 @@
             super.stepOn(world, blockposition, entity);
         } else {
             if (!world.isClientSide && world.random.nextInt(i) == 0) {
+                // CraftBukkit start - Step on eggs
+                org.bukkit.event.Cancellable cancellable;
+                if (entity instanceof EntityHuman) {
+                    cancellable = CraftEventFactory.callPlayerInteractEvent((EntityHuman) entity, org.bukkit.event.block.Action.PHYSICAL, blockposition, null, null, null);
+                } else {
+                    cancellable = new EntityInteractEvent(entity.getBukkitEntity(), CraftBlock.at(world, blockposition));
+                    world.getServer().getPluginManager().callEvent((EntityInteractEvent) cancellable);
+                }
+
+                if (cancellable.isCancelled()) {
+                    return;
+                }
+                // CraftBukkit end
                 this.a(world, blockposition, world.getType(blockposition));
             }
 
@@ -60,9 +79,19 @@
             int i = (Integer) iblockdata.get(BlockTurtleEgg.a);
 
             if (i < 2) {
+                // CraftBukkit start - Call BlockGrowEvent
+                if (!CraftEventFactory.handleBlockGrowEvent(worldserver, blockposition, iblockdata.set(BlockTurtleEgg.a, i + 1), 2)) {
+                    return;
+                }
+                // CraftBukkit end
                 worldserver.playSound((EntityHuman) null, blockposition, SoundEffects.ENTITY_TURTLE_EGG_CRACK, SoundCategory.BLOCKS, 0.7F, 0.9F + random.nextFloat() * 0.2F);
-                worldserver.setTypeAndData(blockposition, (IBlockData) iblockdata.set(BlockTurtleEgg.a, i + 1), 2);
+                // worldserver.setTypeAndData(blockposition, (IBlockData) iblockdata.set(BlockTurtleEgg.a, i + 1), 2); // CraftBukkit - handled above
             } else {
+                // CraftBukkit start - Call BlockFadeEvent
+                if (CraftEventFactory.callBlockFadeEvent(worldserver, blockposition, Blocks.AIR.getBlockData()).isCancelled()) {
+                    return;
+                }
+                // CraftBukkit end
                 worldserver.playSound((EntityHuman) null, blockposition, SoundEffects.ENTITY_TURTLE_EGG_HATCH, SoundCategory.BLOCKS, 0.7F, 0.9F + random.nextFloat() * 0.2F);
                 worldserver.a(blockposition, false);
 
@@ -73,7 +102,7 @@
                     entityturtle.setAgeRaw(-24000);
                     entityturtle.g(blockposition);
                     entityturtle.setPositionRotation((double) blockposition.getX() + 0.3D + (double) j * 0.2D, (double) blockposition.getY(), (double) blockposition.getZ() + 0.3D, 0.0F, 0.0F);
-                    worldserver.addEntity(entityturtle);
+                    worldserver.addEntity(entityturtle, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.EGG); // CraftBukkit
                 }
             }
         }