From f7cfb32940e6bb8be5cb2592737ac9096d194878 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Wed, 27 Mar 2019 22:48:45 -0400
Subject: [PATCH] Server Tick Events

Fires event at start and end of a server tick

diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 99306781f7..cbb4280631 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1041,6 +1041,7 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
         co.aikar.timings.TimingsManager.FULL_SERVER_TICK.startTiming(); // Paper
         this.slackActivityAccountant.tickStarted(); // Spigot
         long i = SystemUtils.getMonotonicNanos();
+        new com.destroystokyo.paper.event.server.ServerTickStartEvent(this.ticks+1).callEvent(); // Paper
 
         ++this.ticks;
         this.b(booleansupplier);
@@ -1087,6 +1088,11 @@ public abstract class MinecraftServer extends IAsyncTaskHandlerReentrant<TickTas
         this.methodProfiler.exit();
         org.spigotmc.WatchdogThread.tick(); // Spigot
         this.slackActivityAccountant.tickEnded(l); // Spigot
+        // Paper start
+        long endTime = System.nanoTime();
+        long remaining = (TICK_TIME - (endTime - lastTick)) - catchupTime;
+        new com.destroystokyo.paper.event.server.ServerTickEndEvent(this.ticks, ((double)(endTime - lastTick) / 1000000D), remaining).callEvent();
+        // Paper end
         co.aikar.timings.TimingsManager.FULL_SERVER_TICK.stopTiming(); // Paper
     }
 
-- 
2.21.0