1 files changed, 121 insertions, 0 deletions
diff --git a/patches/server/0305-Entity-getEntitySpawnReason.patch b/patches/server/0305-Entity-getEntitySpawnReason.patch
new file mode 100644
index 0000000000..8b9a1f882b
--- /dev/null
+++ b/patches/server/0305-Entity-getEntitySpawnReason.patch
@@ -0,0 +1,121 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <[email protected]>
+Date: Sun, 24 Mar 2019 00:24:52 -0400
+Subject: [PATCH] Entity#getEntitySpawnReason
+
+Allows you to return the SpawnReason for why an Entity Spawned
+
+Pre existing entities will return NATURAL if it was a non
+persistenting Living Entity, SPAWNER for spawners,
+or DEFAULT since data was not stored.
+
+diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
+index efc2db1b27e9ac4b1094b7e529c198a94d05b164..84eeb8787c389a3c66b23d567f6c2ebe9644a1ce 100644
+--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
++++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
+@@ -1250,6 +1250,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+             return true;
+         }
+         // Paper end
++        if (entity.spawnReason == null) entity.spawnReason = spawnReason; // Paper
+         if (entity.isRemoved()) {
+             // Paper start
+             if (DEBUG_ENTITIES) {
+diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
+index 45cd4ac70bf322a3bb256579f795db46b9beb7a0..80b6eb1e010559c02c9e7624a5c131d11c80c68e 100644
+--- a/src/main/java/net/minecraft/server/players/PlayerList.java
++++ b/src/main/java/net/minecraft/server/players/PlayerList.java
+@@ -348,7 +348,7 @@ public abstract class PlayerList {
+             // CraftBukkit start
+             ServerLevel finalWorldServer = worldserver1;
+             Entity entity = EntityType.loadEntityRecursive(nbttagcompound1.getCompound("Entity"), finalWorldServer, (entity1) -> {
+-                return !finalWorldServer.addWithUUID(entity1) ? null : entity1;
++                return !finalWorldServer.addWithUUID(entity1, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.MOUNT) ? null : entity1; // Paper
+                 // CraftBukkit end
+             });
+ 
+diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
+index e6fa82b942ec176288aaca080e3d9c8df6a16ac0..fa128e7f8089339f932e19edf95a8d5c0cc14046 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -74,6 +74,8 @@ import net.minecraft.world.InteractionHand;
+ import net.minecraft.world.InteractionResult;
+ import net.minecraft.world.Nameable;
+ import net.minecraft.world.damagesource.DamageSource;
++import net.minecraft.world.entity.animal.AbstractFish;
++import net.minecraft.world.entity.animal.Animal;
+ import net.minecraft.world.entity.item.ItemEntity;
+ import net.minecraft.world.entity.player.Player;
+ import net.minecraft.world.entity.vehicle.Boat;
+@@ -231,6 +233,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+         }
+     }
+     // Paper end
++    public org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason spawnReason; // Paper
+ 
+     public com.destroystokyo.paper.loottable.PaperLootableInventoryData lootableData; // Paper
+     private CraftEntity bukkitEntity;
+@@ -2023,6 +2026,9 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+                 }
+                 nbt.put("Paper.Origin", this.newDoubleList(origin.getX(), origin.getY(), origin.getZ()));
+             }
++            if (spawnReason != null) {
++                nbt.putString("Paper.SpawnReason", spawnReason.name());
++            }
+             // Save entity's from mob spawner status
+             if (spawnedViaMobSpawner) {
+                 nbt.putBoolean("Paper.FromMobSpawner", true);
+@@ -2168,6 +2174,26 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+             }
+ 
+             spawnedViaMobSpawner = nbt.getBoolean("Paper.FromMobSpawner"); // Restore entity's from mob spawner status
++            if (nbt.contains("Paper.SpawnReason")) {
++                String spawnReasonName = nbt.getString("Paper.SpawnReason");
++                try {
++                    spawnReason = org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.valueOf(spawnReasonName);
++                } catch (Exception ignored) {
++                    LOGGER.error("Unknown SpawnReason " + spawnReasonName + " for " + this);
++                }
++            }
++            if (spawnReason == null) {
++                if (spawnedViaMobSpawner) {
++                    spawnReason = org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.SPAWNER;
++                } else if (this instanceof Mob && (this instanceof Animal || this instanceof AbstractFish) && !((Mob) this).removeWhenFarAway(0.0)) {
++                    if (!nbt.getBoolean("PersistenceRequired")) {
++                        spawnReason = org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.NATURAL;
++                    }
++                }
++            }
++            if (spawnReason == null) {
++                spawnReason = org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.DEFAULT;
++            }
+             // Paper end
+ 
+         } catch (Throwable throwable) {
+diff --git a/src/main/java/net/minecraft/world/level/BaseSpawner.java b/src/main/java/net/minecraft/world/level/BaseSpawner.java
+index 0be0c7a323277093a6f8e476048eb9ee8712cbc9..c7e97263eee005fd673882e11c436542cb0ca62a 100644
+--- a/src/main/java/net/minecraft/world/level/BaseSpawner.java
++++ b/src/main/java/net/minecraft/world/level/BaseSpawner.java
+@@ -181,6 +181,7 @@ public abstract class BaseSpawner {
+                             // Spigot End
+                         }
+                         entity.spawnedViaMobSpawner = true; // Paper
++                        entity.spawnReason = org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.SPAWNER; // Paper
+                         flag = true; // Paper
+                         // Spigot Start
+                         if (org.bukkit.craftbukkit.event.CraftEventFactory.callSpawnerSpawnEvent(entity, pos).isCancelled()) {
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+index 2a4f26c5bae66121c5c21d7f1013b3b7753608a4..3bda8128c2956d817677e28ff87c9c5ed61c8bd2 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+@@ -1266,5 +1266,10 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
+     public boolean fromMobSpawner() {
+         return getHandle().spawnedViaMobSpawner;
+     }
++
++    @Override
++    public org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason getEntitySpawnReason() {
++        return getHandle().spawnReason;
++    }
+     // Paper end
+ }