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/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index 13b10732917ffb823688336e888a329c774cc251..039a95a62e115f7095c38eb9a161dc0ff054a50a 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -188,6 +188,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
     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
@@ -1582,6 +1583,10 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
             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) {
@@ -1704,6 +1709,8 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
             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/server/MobSpawnerAbstract.java b/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
index 2b7f020e00fc1ea456d0155e7e383969aee318b7..5fda5be52ee7dbf29ac791d0f49326dd74ff2d08 100644
--- a/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
+++ b/src/main/java/net/minecraft/server/MobSpawnerAbstract.java
@@ -140,6 +140,7 @@ 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 613081685e233074728366b9ff16642c04774c91..66edc6ae67084959503ffa0df2c04174fb29b8d8 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
@@ -1054,5 +1054,10 @@ 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
 }