From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Mariell Hoversholm <proximyst@proximyst.com>
Date: Tue, 29 Dec 2020 15:03:03 +0100
Subject: [PATCH] Add sendOpLevel API


diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
index fbe10666c4ec6caa95aa38a6f99ccca700e9a4d2..061bba184c8bc2569ce1d413435ec1360fa14007 100644
--- a/src/main/java/net/minecraft/server/players/PlayerList.java
+++ b/src/main/java/net/minecraft/server/players/PlayerList.java
@@ -1025,6 +1025,11 @@ public abstract class PlayerList {
     }
 
     private void sendPlayerPermissionLevel(ServerPlayer player, int permissionLevel) {
+        // Paper start - Add sendOpLevel API
+        this.sendPlayerPermissionLevel(player, permissionLevel, true);
+    }
+    public void sendPlayerPermissionLevel(ServerPlayer player, int permissionLevel, boolean recalculatePermissions) {
+        // Paper end - Add sendOpLevel API
         if (player.connection != null) {
             byte b0;
 
@@ -1039,8 +1044,10 @@ public abstract class PlayerList {
             player.connection.send(new ClientboundEntityEventPacket(player, b0));
         }
 
+        if (recalculatePermissions) { // Paper - Add sendOpLevel API
         player.getBukkitEntity().recalculatePermissions(); // CraftBukkit
         this.server.getCommands().sendCommands(player);
+        } // Paper - Add sendOpLevel API
     }
 
     public boolean isWhiteListed(GameProfile profile) {
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index a631d35100b1910b717e359d3f27918a95a7a2cf..14adc60ba3e76ce71bc957d0a41383c3f1413b34 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -682,6 +682,15 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
     }
     // Paper end
 
+    // Paper start - Add sendOpLevel API
+    @Override
+    public void sendOpLevel(byte level) {
+        Preconditions.checkArgument(level >= 0 && level <= 4, "Level must be within [0, 4]");
+
+        this.getHandle().getServer().getPlayerList().sendPlayerPermissionLevel(this.getHandle(), level, false);
+    }
+    // Paper end - Add sendOpLevel API
+
     @Override
     public void setCompassTarget(Location loc) {
         Preconditions.checkArgument(loc != null, "Location cannot be null");