From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: BillyGalbreath <Blake.Galbreath@GMail.com>
Date: Sun, 18 Jun 2017 18:17:05 -0500
Subject: [PATCH] Entity#fromMobSpawner()


diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index b798190628c1d83b5bf9e5497b515ef1e9f26707..6b6de18e368d48b61482a7210794b756d805a460 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -268,6 +268,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, ne
     public final org.spigotmc.ActivationRange.ActivationType activationType = org.spigotmc.ActivationRange.initializeEntityActivationType(this);
     public final boolean defaultActivationState;
     public long activatedTick = Integer.MIN_VALUE;
+    public boolean spawnedViaMobSpawner; // Paper - Yes this name is similar to above, upstream took the better one
     protected int numCollisions = 0; // Paper
     public void inactiveTick() { }
     // Spigot end
@@ -1665,6 +1666,10 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, ne
             if (this.origin != null) {
                 nbttagcompound.set("Paper.Origin", this.createList(origin.getX(), origin.getY(), origin.getZ()));
             }
+            // Save entity's from mob spawner status
+            if (spawnedViaMobSpawner) {
+                nbttagcompound.setBoolean("Paper.FromMobSpawner", true);
+            }
             // Paper end
             return nbttagcompound;
         } catch (Throwable throwable) {
@@ -1793,6 +1798,8 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, ne
             if (!originTag.isEmpty()) {
                 origin = new org.bukkit.Location(world.getWorld(), originTag.getDoubleAt(0), originTag.getDoubleAt(1), originTag.getDoubleAt(2));
             }
+
+            spawnedViaMobSpawner = nbttagcompound.getBoolean("Paper.FromMobSpawner"); // Restore entity's from mob spawner status
             // Paper end
 
         } catch (Throwable throwable) {
diff --git a/src/main/java/net/minecraft/world/level/MobSpawnerAbstract.java b/src/main/java/net/minecraft/world/level/MobSpawnerAbstract.java
index 76c98d576d3e567ec4482b30219f5a9107cb9703..43fcc001bb9815b352cb74af10290b2a4ccaa540 100644
--- a/src/main/java/net/minecraft/world/level/MobSpawnerAbstract.java
+++ b/src/main/java/net/minecraft/world/level/MobSpawnerAbstract.java
@@ -160,6 +160,7 @@ public abstract class MobSpawnerAbstract {
                                 }
                                 // Spigot End
                             }
+                        entity.spawnedViaMobSpawner = true; // Paper
                             // Spigot Start
                             if (org.bukkit.craftbukkit.event.CraftEventFactory.callSpawnerSpawnEvent(entity, blockposition).isCancelled()) {
                                 Entity vehicle = entity.getVehicle();
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
index a58626b1a0160983a738a45c8a1d411eb347e6a2..4c2a35fb33da19a15a220dc5e0c9fa3233d657fb 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
@@ -1100,5 +1100,10 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
         Location origin = getHandle().origin;
         return origin == null ? null : origin.clone();
     }
+
+    @Override
+    public boolean fromMobSpawner() {
+        return getHandle().spawnedViaMobSpawner;
+    }
     // Paper end
 }