PaperMC/paper-server/nms-patches/net/minecraft/server/ScoreboardServer.patch

--- a/net/minecraft/server/ScoreboardServer.java
+++ b/net/minecraft/server/ScoreboardServer.java
@@ -34,7 +34,7 @@
     public void onScoreChanged(ScoreboardScore scoreboardscore) {
         super.onScoreChanged(scoreboardscore);
         if (this.trackedObjectives.contains(scoreboardscore.getObjective())) {
-            this.server.getPlayerList().broadcastAll(new PacketPlayOutScoreboardScore(ScoreboardServer.Action.CHANGE, scoreboardscore.getObjective().getName(), scoreboardscore.getOwner(), scoreboardscore.getScore()));
+            this.broadcastAll(new PacketPlayOutScoreboardScore(ScoreboardServer.Action.CHANGE, scoreboardscore.getObjective().getName(), scoreboardscore.getOwner(), scoreboardscore.getScore()));
         }
 
         this.setDirty();
@@ -43,7 +43,7 @@
     @Override
     public void onPlayerRemoved(String s) {
         super.onPlayerRemoved(s);
-        this.server.getPlayerList().broadcastAll(new PacketPlayOutScoreboardScore(ScoreboardServer.Action.REMOVE, (String) null, s, 0));
+        this.broadcastAll(new PacketPlayOutScoreboardScore(ScoreboardServer.Action.REMOVE, (String) null, s, 0));
         this.setDirty();
     }
 
@@ -51,7 +51,7 @@
     public void onPlayerScoreRemoved(String s, ScoreboardObjective scoreboardobjective) {
         super.onPlayerScoreRemoved(s, scoreboardobjective);
         if (this.trackedObjectives.contains(scoreboardobjective)) {
-            this.server.getPlayerList().broadcastAll(new PacketPlayOutScoreboardScore(ScoreboardServer.Action.REMOVE, scoreboardobjective.getName(), s, 0));
+            this.broadcastAll(new PacketPlayOutScoreboardScore(ScoreboardServer.Action.REMOVE, scoreboardobjective.getName(), s, 0));
         }
 
         this.setDirty();
@@ -64,7 +64,7 @@
         super.setDisplayObjective(i, scoreboardobjective);
         if (scoreboardobjective1 != scoreboardobjective && scoreboardobjective1 != null) {
             if (this.getObjectiveDisplaySlotCount(scoreboardobjective1) > 0) {
-                this.server.getPlayerList().broadcastAll(new PacketPlayOutScoreboardDisplayObjective(i, scoreboardobjective));
+                this.broadcastAll(new PacketPlayOutScoreboardDisplayObjective(i, scoreboardobjective));
             } else {
                 this.stopTrackingObjective(scoreboardobjective1);
             }
@@ -72,7 +72,7 @@
 
         if (scoreboardobjective != null) {
             if (this.trackedObjectives.contains(scoreboardobjective)) {
-                this.server.getPlayerList().broadcastAll(new PacketPlayOutScoreboardDisplayObjective(i, scoreboardobjective));
+                this.broadcastAll(new PacketPlayOutScoreboardDisplayObjective(i, scoreboardobjective));
             } else {
                 this.startTrackingObjective(scoreboardobjective);
             }
@@ -84,7 +84,7 @@
     @Override
     public boolean addPlayerToTeam(String s, ScoreboardTeam scoreboardteam) {
         if (super.addPlayerToTeam(s, scoreboardteam)) {
-            this.server.getPlayerList().broadcastAll(PacketPlayOutScoreboardTeam.createPlayerPacket(scoreboardteam, s, PacketPlayOutScoreboardTeam.a.ADD));
+            this.broadcastAll(PacketPlayOutScoreboardTeam.createPlayerPacket(scoreboardteam, s, PacketPlayOutScoreboardTeam.a.ADD));
             this.setDirty();
             return true;
         } else {
@@ -95,7 +95,7 @@
     @Override
     public void removePlayerFromTeam(String s, ScoreboardTeam scoreboardteam) {
         super.removePlayerFromTeam(s, scoreboardteam);
-        this.server.getPlayerList().broadcastAll(PacketPlayOutScoreboardTeam.createPlayerPacket(scoreboardteam, s, PacketPlayOutScoreboardTeam.a.REMOVE));
+        this.broadcastAll(PacketPlayOutScoreboardTeam.createPlayerPacket(scoreboardteam, s, PacketPlayOutScoreboardTeam.a.REMOVE));
         this.setDirty();
     }
 
@@ -109,7 +109,7 @@
     public void onObjectiveChanged(ScoreboardObjective scoreboardobjective) {
         super.onObjectiveChanged(scoreboardobjective);
         if (this.trackedObjectives.contains(scoreboardobjective)) {
-            this.server.getPlayerList().broadcastAll(new PacketPlayOutScoreboardObjective(scoreboardobjective, 2));
+            this.broadcastAll(new PacketPlayOutScoreboardObjective(scoreboardobjective, 2));
         }
 
         this.setDirty();
@@ -128,21 +128,21 @@
     @Override
     public void onTeamAdded(ScoreboardTeam scoreboardteam) {
         super.onTeamAdded(scoreboardteam);
-        this.server.getPlayerList().broadcastAll(PacketPlayOutScoreboardTeam.createAddOrModifyPacket(scoreboardteam, true));
+        this.broadcastAll(PacketPlayOutScoreboardTeam.createAddOrModifyPacket(scoreboardteam, true));
         this.setDirty();
     }
 
     @Override
     public void onTeamChanged(ScoreboardTeam scoreboardteam) {
         super.onTeamChanged(scoreboardteam);
-        this.server.getPlayerList().broadcastAll(PacketPlayOutScoreboardTeam.createAddOrModifyPacket(scoreboardteam, false));
+        this.broadcastAll(PacketPlayOutScoreboardTeam.createAddOrModifyPacket(scoreboardteam, false));
         this.setDirty();
     }
 
     @Override
     public void onTeamRemoved(ScoreboardTeam scoreboardteam) {
         super.onTeamRemoved(scoreboardteam);
-        this.server.getPlayerList().broadcastAll(PacketPlayOutScoreboardTeam.createRemovePacket(scoreboardteam));
+        this.broadcastAll(PacketPlayOutScoreboardTeam.createRemovePacket(scoreboardteam));
         this.setDirty();
     }
 
@@ -189,6 +189,7 @@
 
         while (iterator.hasNext()) {
             EntityPlayer entityplayer = (EntityPlayer) iterator.next();
+            if (entityplayer.getBukkitEntity().getScoreboard().getHandle() != this) continue; // CraftBukkit - Only players on this board
             Iterator iterator1 = list.iterator();
 
             while (iterator1.hasNext()) {
@@ -221,6 +222,7 @@
 
         while (iterator.hasNext()) {
             EntityPlayer entityplayer = (EntityPlayer) iterator.next();
+            if (entityplayer.getBukkitEntity().getScoreboard().getHandle() != this) continue; // CraftBukkit - Only players on this board
             Iterator iterator1 = list.iterator();
 
             while (iterator1.hasNext()) {
@@ -257,6 +259,16 @@
         return this.createData().load(nbttagcompound);
     }
 
+    // CraftBukkit start - Send to players
+    private void broadcastAll(Packet packet) {
+        for (EntityPlayer entityplayer : (List<EntityPlayer>) this.server.getPlayerList().players) {
+            if (entityplayer.getBukkitEntity().getScoreboard().getHandle() == this) {
+                entityplayer.connection.send(packet);
+            }
+        }
+    }
+    // CraftBukkit end
+
     public static enum Action {
 
         CHANGE, REMOVE;