From 62368ec93e5c9db0f2681ace4bc6cd8d6621cdc9 Mon Sep 17 00:00:00 2001
From: Shauren <shauren.trinity@gmail.com>
Date: Sat, 16 Apr 2022 23:14:42 +0200
Subject: [PATCH] Core/World: Allow specifying minimum world updates diff in
 config

---
 src/server/worldserver/Main.cpp              | 7 +++----
 src/server/worldserver/worldserver.conf.dist | 7 +++++++
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/src/server/worldserver/Main.cpp b/src/server/worldserver/Main.cpp
index b7e3d2fe348..75b26b29f6e 100644
--- a/src/server/worldserver/Main.cpp
+++ b/src/server/worldserver/Main.cpp
@@ -70,8 +70,6 @@ namespace fs = boost::filesystem;
     #define _TRINITY_CORE_CONFIG  "worldserver.conf"
 #endif
 
-#define WORLD_SLEEP_CONST 1
-
 #ifdef _WIN32
 #include "ServiceWin32.h"
 char serviceName[] = "worldserver";
@@ -474,6 +472,7 @@ void ShutdownCLIThread(std::thread* cliThread)
 
 void WorldUpdateLoop()
 {
+    uint32 minUpdateDiff = uint32(sConfigMgr->GetIntDefault("MinWorldUpdateTime", 1));
     uint32 realCurrTime = 0;
     uint32 realPrevTime = getMSTime();
 
@@ -484,10 +483,10 @@ void WorldUpdateLoop()
         realCurrTime = getMSTime();
 
         uint32 diff = getMSTimeDiff(realPrevTime, realCurrTime);
-        if (!diff)
+        if (diff < minUpdateDiff)
         {
             // sleep until enough time passes that we can update all timers
-            std::this_thread::sleep_for(std::chrono::milliseconds(1));
+            std::this_thread::sleep_for(Milliseconds(minUpdateDiff - diff));
             continue;
         }
 
diff --git a/src/server/worldserver/worldserver.conf.dist b/src/server/worldserver/worldserver.conf.dist
index 215e6d24544..858553f0060 100644
--- a/src/server/worldserver/worldserver.conf.dist
+++ b/src/server/worldserver/worldserver.conf.dist
@@ -336,6 +336,13 @@ SessionAddDelay = 10000
 
 GridCleanUpDelay = 300000
 
+#
+#    MinWorldUpdateTime
+#        Description: Minimum time (milliseconds) between world update ticks (for mostly idle servers).
+#        Default:     1 - (0.001 second)
+
+MinWorldUpdateTime = 1
+
 #
 #    MapUpdateInterval
 #        Description: Time (milliseconds) for map update interval.