From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <blake.galbreath@gmail.com>
Date: Thu, 26 Mar 2020 19:06:22 -0500
Subject: [PATCH] Configurable TPS Catchup


diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
index 6676970d434b8c1200d8ec3c0304084b640a7eb8..9835183dc91230f86200eb18cf9ce9a26e5808ab 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1258,6 +1258,12 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
                 this.profiler.popPush("nextTickWait");
                 this.mayHaveDelayedTasks = true;
                 this.delayedTasksMaxNextTickTimeNanos = Math.max(Util.getNanos() + i, this.nextTickTimeNanos);
+                // Purpur start
+                if (!org.purpurmc.purpur.PurpurConfig.tpsCatchup) {
+                    this.nextTickTimeNanos = currentTime + i;
+                    this.delayedTasksMaxNextTickTimeNanos = nextTickTimeNanos;
+                }
+                // Purpur end
                 this.startMeasuringTaskExecutionTime();
                 this.waitUntilNextTick();
                 this.finishMeasuringTaskExecutionTime();
diff --git a/src/main/java/org/purpurmc/purpur/PurpurConfig.java b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
index 49737a87b75c971b823bc1f3a20c17faee9d537c..5fc5ae6f6e04e1fe4edfd22379bbfa52b5af0bc2 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
@@ -250,4 +250,9 @@ public class PurpurConfig {
         loggerSuppressUnrecognizedRecipeErrors = getBoolean("settings.logger.suppress-unrecognized-recipe-errors", loggerSuppressUnrecognizedRecipeErrors);
         loggerSuppressSetBlockFarChunk = getBoolean("settings.logger.suppress-setblock-in-far-chunk-errors", loggerSuppressSetBlockFarChunk);
     }
+
+    public static boolean tpsCatchup = true;
+    private static void tpsCatchup() {
+        tpsCatchup = getBoolean("settings.tps-catchup", tpsCatchup);
+    }
 }