From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Tue, 8 Mar 2016 23:25:45 -0500
Subject: [PATCH] Disable Scoreboards for non players by default

Entities collision is checking for scoreboards setting.
This is very heavy to do map lookups for every collision to check
this setting.

So avoid looking up scoreboards and short circuit to the "not on a team"
logic which is most likely to be true.

diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 6d1473a5267ecd3617d76fee23527bde58283bb1..1ab2ede5e9d8939f69fb430084437fda63879fb7 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -251,4 +251,9 @@ public class PaperWorldConfig {
     private void disableTeleportationSuffocationCheck() {
         disableTeleportationSuffocationCheck = getBoolean("disable-teleportation-suffocation-check", false);
     }
+
+    public boolean nonPlayerEntitiesOnScoreboards = false;
+    private void nonPlayerEntitiesOnScoreboards() {
+        nonPlayerEntitiesOnScoreboards = getBoolean("allow-non-player-entities-on-scoreboards", false);
+    }
 }
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 8161cbd3cfed89bee74209c718d0ceff2b401890..a957a168450ee5c34a58ed993f281ca774fccfc1 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -2588,6 +2588,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, i
 
     @Nullable
     public Team getTeam() {
+        if (!this.level.paperConfig.nonPlayerEntitiesOnScoreboards && !(this instanceof Player)) { return null; } // Paper
         return this.level.getScoreboard().getPlayersTeam(this.getScoreboardName());
     }
 
diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
index deef28110441cd2965c6b531bc255ee2aa994ace..60356e889f2da17b313ee5cf223ee0c5066182c4 100644
--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
@@ -798,6 +798,7 @@ public abstract class LivingEntity extends Entity {
         if (nbt.contains("Team", 8)) {
             String s = nbt.getString("Team");
             PlayerTeam scoreboardteam = this.level.getScoreboard().getPlayerTeam(s);
+            if (!level.paperConfig.nonPlayerEntitiesOnScoreboards && !(this instanceof net.minecraft.world.entity.player.Player)) { scoreboardteam = null; } // Paper
             boolean flag = scoreboardteam != null && this.level.getScoreboard().addPlayerToTeam(this.getStringUUID(), scoreboardteam);
 
             if (!flag) {