From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Tue, 23 Jul 2019 10:07:16 -0500
Subject: [PATCH] Lagging threshold


diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 3290702916f6ee8dca3d5a79ddad90b1db3d76a0..b9b95ccd4a1041008b54d6cd0293ea220bdcac8d 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -304,6 +304,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
     public static final int TICK_TIME = 1000000000 / MinecraftServer.TPS;
     private static final int SAMPLE_INTERVAL = 20; // Paper
     public final double[] recentTps = new double[ 3 ];
+    public boolean lagging = false; // Purpur
     public final SlackActivityAccountant slackActivityAccountant = new SlackActivityAccountant();
     // Spigot end
     public static long currentTickLong = 0L; // Paper
@@ -1203,6 +1204,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
                         this.recentTps[1] = tps5.getAverage();
                         this.recentTps[2] = tps15.getAverage();
                         // Paper end
+                        lagging = recentTps[0] < org.purpurmc.purpur.PurpurConfig.laggingThreshold; // Purpur
                         tickSection = curTime;
                     }
                     // Spigot end
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index be5dd98b305fb83cbb344f80c045720c3cb900cf..571cbb2a811c2ce7459db48a1d648e86fd0448d3 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -2859,5 +2859,10 @@ public final class CraftServer implements Server {
     public String getServerName() {
         return this.getProperties().serverName;
     }
+
+    @Override
+    public boolean isLagging() {
+        return getServer().lagging;
+    }
     // Purpur end
 }
diff --git a/src/main/java/org/purpurmc/purpur/PurpurConfig.java b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
index c08f8b8a140fd2d746b054ef7ff2a689a0cca6c2..3b417ecebe7bb621aee76d5155d97695c826f4a6 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
@@ -186,6 +186,11 @@ public class PurpurConfig {
         serverModName = getString("settings.server-mod-name", serverModName);
     }
 
+    public static double laggingThreshold = 19.0D;
+    private static void tickLoopSettings() {
+        laggingThreshold = getDouble("settings.lagging-threshold", laggingThreshold);
+    }
+
     public static int barrelRows = 3;
     public static boolean enderChestSixRows = false;
     public static boolean enderChestPermissionRows = false;