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 5aabb74e0fd49a7ab97d324f9fa7bfc26527af00..709d594d35848d248a195e20f73972d26dcac7c1 100644
--- a/src/main/java/net/minecraft/server/MinecraftServer.java
+++ b/src/main/java/net/minecraft/server/MinecraftServer.java
@@ -1239,6 +1239,12 @@ 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 321a10764b2a0787a49d7b8948e40cfe0a73f591..29d7c792277ff17f5119cf391c4fe4b86797adf0 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurConfig.java
@@ -248,4 +248,9 @@ 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);
+    }
 }