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] |FEAT| Lagging threshold

Adds the config option below that lets you determine what level of TPS is considered lagging.

$-----------------------------$
settings:
  lagging-threshold:
    default: 19.0
    description: |-
      Purpur keeps track of when it is lagging in order to have the ability to change behaviors accordingly.
      This value is that threshold when you want to consider the server to be lagging.
      Right now this is only used for the mob.villager.brain-ticks setting
$-----------------------------$

diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index adb69ec9916304204930a5988569c20e8a8868f9..ce0b5770129d91c7fc1cfa751f9828973444e5fe 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -306,6 +306,7 @@ 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
@@ -1257,6 +1258,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
                         this.recentTps[1] = tps5.getAverage();
                         this.recentTps[2] = tps15.getAverage();
                         // Paper end
+                        lagging = recentTps[0] < net.pl3x.purpur.PurpurConfig.laggingThreshold; // Purpur
                         tickSection = curTime;
                     }
                     // Spigot end
diff --git a/src/main/java/net/pl3x/purpur/PurpurConfig.java b/src/main/java/net/pl3x/purpur/PurpurConfig.java
index bc5f937e7480d954680c7b9f1d698aff3e28665d..c0e7027ad804d7b801ef8cb94963c113c95735d1 100644
--- a/src/main/java/net/pl3x/purpur/PurpurConfig.java
+++ b/src/main/java/net/pl3x/purpur/PurpurConfig.java
@@ -188,6 +188,11 @@ public class PurpurConfig {
         if (!co.aikar.timings.TimingsManager.hiddenConfigs.contains("server-ip")) co.aikar.timings.TimingsManager.hiddenConfigs.add("server-ip");
     }
 
+    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;
diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
index c4b60be92fec445096e81e9fad106d2a9f635ff2..09530a0caa8c64f27a6fa28c3919fb326e4a31d6 100644
--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
@@ -2689,5 +2689,10 @@ public final class CraftServer implements Server {
     public String getServerName() {
         return this.getProperties().serverName;
     }
+
+    @Override
+    public boolean isLagging() {
+        return getServer().lagging;
+    }
     // Purpur end
 }