Paper/patches/server/0321-Server-Tick-Events.patch

From 0000000000000000000000000000000000000000 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 a5a48c0450cd3f15c2bc49f45487da9573a4dec3..8415342e178ab61660321570454815eb418b5282 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1327,6 +1327,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
         });
         isOversleep = false;MinecraftTimings.serverOversleep.stopTiming();
         // Paper end
+        new com.destroystokyo.paper.event.server.ServerTickStartEvent(this.tickCount+1).callEvent(); // Paper
 
         ++this.tickCount;
         this.tickChildren(shouldKeepTicking);
@@ -1370,6 +1371,12 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
         }
         // Paper end
 
+        // Paper start
+        long endTime = System.nanoTime();
+        long remaining = (TICK_TIME - (endTime - lastTick)) - catchupTime;
+        new com.destroystokyo.paper.event.server.ServerTickEndEvent(this.tickCount, ((double)(endTime - lastTick) / 1000000D), remaining).callEvent();
+        // Paper end
+
         this.profiler.push("tallying");
         long l = this.tickTimes[this.tickCount % 100] = Util.getNanos() - i;