Paper/nms-patches/EntityEnderCrystal.patch

--- a/net/minecraft/server/EntityEnderCrystal.java
+++ b/net/minecraft/server/EntityEnderCrystal.java
@@ -3,6 +3,11 @@
 import java.util.Optional;
 import javax.annotation.Nullable;
 
+// CraftBukkit start
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+import org.bukkit.event.entity.ExplosionPrimeEvent;
+// CraftBukkit end
+
 public class EntityEnderCrystal extends Entity {
 
     private static final DataWatcherObject<Optional<BlockPosition>> c = DataWatcher.a(EntityEnderCrystal.class, DataWatcherRegistry.m);
@@ -38,7 +43,11 @@
             BlockPosition blockposition = this.getChunkCoordinates();
 
             if (((WorldServer) this.world).getDragonBattle() != null && this.world.getType(blockposition).isAir()) {
-                this.world.setTypeUpdate(blockposition, BlockFireAbstract.a((IBlockAccess) this.world, blockposition));
+                // CraftBukkit start
+                if (!CraftEventFactory.callBlockIgniteEvent(this.world, blockposition, this).isCancelled()) {
+                    this.world.setTypeUpdate(blockposition, BlockFireAbstract.a((IBlockAccess) this.world, blockposition));
+                }
+                // CraftBukkit end
             }
         }
 
@@ -78,9 +87,22 @@
             return false;
         } else {
             if (!this.dead && !this.world.isClientSide) {
+                // CraftBukkit start - All non-living entities need this
+                if (CraftEventFactory.handleNonLivingEntityDamageEvent(this, damagesource, f, false)) {
+                    return false;
+                }
+                // CraftBukkit end
                 this.die();
                 if (!damagesource.isExplosion()) {
-                    this.world.explode((Entity) null, this.locX(), this.locY(), this.locZ(), 6.0F, Explosion.Effect.DESTROY);
+                    // CraftBukkit start
+                    ExplosionPrimeEvent event = new ExplosionPrimeEvent(this.getBukkitEntity(), 6.0F, false);
+                    this.world.getServer().getPluginManager().callEvent(event);
+                    if (event.isCancelled()) {
+                        this.dead = false;
+                        return false;
+                    }
+                    this.world.createExplosion(this, this.locX(), this.locY(), this.locZ(), event.getRadius(), event.getFire(), Explosion.Effect.DESTROY);
+                    // CraftBukkit end
                 }
 
                 this.a(damagesource);