From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <Blake.Galbreath@GMail.com>
Date: Tue, 18 Feb 2020 20:07:08 -0600
Subject: [PATCH] Add canSaveToDisk to Entity


diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 6a3ab6ad06b7ae33549cdfa52e717bbae1fe78ca..b26e19f67767ef5d0da819be44f0ca0aabc2bdbb 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -473,6 +473,10 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
         return false;
     }
 
+    public boolean canSaveToDisk() {
+        return true;
+    }
+
     public final boolean hardCollides() {
         return this.hardCollides;
     }
diff --git a/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java b/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java
index cc51c88788e52c35447ff4c3dffaf8ac50474990..87a0d264d9b54e1b0b29f49431212c977864a30a 100644
--- a/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java
+++ b/src/main/java/net/minecraft/world/entity/boss/wither/WitherBoss.java
@@ -194,6 +194,11 @@ public class WitherBoss extends Monster implements PowerableMob, RangedAttackMob
                     vec3d = vec3d.add(vec3d2.x * 0.3D - vec3d.x * 0.6D, 0.0D, vec3d2.z * 0.3D - vec3d.z * 0.6D);
                 }
             }
+
+            @Override
+            public boolean canSaveToDisk() {
+                return false;
+            }
         }
 
         this.setDeltaMovement(vec3d);
diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/EntityStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/EntityStorage.java
index 0ec0be22f7292d57c40da6f1f4575bdebf8dbd09..f1d19cbe165a190cac325e646c7e8080b59cdd54 100644
--- a/src/main/java/net/minecraft/world/level/chunk/storage/EntityStorage.java
+++ b/src/main/java/net/minecraft/world/level/chunk/storage/EntityStorage.java
@@ -111,6 +111,7 @@ public class EntityStorage implements EntityPersistentStorage<Entity> {
 
         ListTag listTag = new ListTag();
         entities.forEach((entity) -> { // diff here: use entities parameter
+            if (!entity.canSaveToDisk()) return; // Purpur
             CompoundTag compoundTag = new CompoundTag();
             if (entity.save(compoundTag)) {
                 listTag.add(compoundTag);