From 60c8599e4c647c625795385da16396c99643d7c3 Mon Sep 17 00:00:00 2001
From: Kamay Xutax <admin@xutaxkamay.com>
Date: Wed, 28 Aug 2024 15:59:44 +0200
Subject: [PATCH] Optimized network

---
 game/client/in_main.cpp |  9 ++++++++-
 game/shared/usercmd.cpp | 18 +++++++++++++++---
 game/shared/usercmd.h   |  5 +++--
 3 files changed, 26 insertions(+), 6 deletions(-)

diff --git a/game/client/in_main.cpp b/game/client/in_main.cpp
index 9e0dd0a149..d82c858bb8 100644
--- a/game/client/in_main.cpp
+++ b/game/client/in_main.cpp
@@ -14,6 +14,7 @@
 #include <cmath>
 #include <cstdio>
 #include "bone_setup.h"
+#include "const.h"
 #include "convar.h"
 #include "imovehelper.h"
 #include "ipredictionsystem.h"
@@ -1300,6 +1301,11 @@ void CInput::CreateMove ( int sequence_number, float input_sample_frametime, boo
 	m_EntityGroundContact.RemoveAll();
 #endif
 
+    for (int i = 0; i < MAX_EDICTS; i++)
+    {
+		cmd->simulationdata[i].m_bEntityExists = false;
+    }
+
 	// Send interpolated simulation time for lag compensation
 	for (int i = 0; i <= ClientEntityList().GetHighestEntityIndex(); i++)
     {
@@ -1311,7 +1317,8 @@ void CInput::CreateMove ( int sequence_number, float input_sample_frametime, boo
         }
 
         cmd->simulationdata[pEntity->index].m_flSimulationTime = pEntity->m_flInterpolatedSimulationTime;
-        cmd->simulationdata[pEntity->index].m_flAnimTime = pEntity->m_flSimulationTime;
+        cmd->simulationdata[pEntity->index].m_flAnimTime       = pEntity->m_flSimulationTime;
+        cmd->simulationdata[pEntity->index].m_bEntityExists    = true;
     }
 
 #ifdef CSTRIKE_DLL
diff --git a/game/shared/usercmd.cpp b/game/shared/usercmd.cpp
index b0680091fa..873ec5a28c 100644
--- a/game/shared/usercmd.cpp
+++ b/game/shared/usercmd.cpp
@@ -194,8 +194,15 @@ void WriteUsercmd( bf_write *buf, const CUserCmd *to, const CUserCmd *from )
     // Write finally simulation data with entity index
     for (unsigned int i = 0; i <= highestEntityIndex; i++)
     {
-        if (from->simulationdata[i].m_flSimulationTime
-            != to->simulationdata[i].m_flSimulationTime)
+        if (to->simulationdata[i].m_bEntityExists)
+        {
+            buf->WriteOneBit( 0 );
+            continue;
+        }
+
+        buf->WriteOneBit( 1 );
+
+        if (from->simulationdata[i].m_flSimulationTime != to->simulationdata[i].m_flSimulationTime)
         {
             buf->WriteOneBit(1);
             buf->WriteBitFloat(to->simulationdata[i].m_flSimulationTime);
@@ -357,8 +364,13 @@ void ReadUsercmd( bf_read *buf, CUserCmd *move, CUserCmd *from )
 
     const auto highestEntityIndex = buf->ReadUBitLong(11);
 
-    for (unsigned int i = 0; i <= highestEntityIndex;i++)
+    for (unsigned int i = 0; i <= highestEntityIndex; i++)
     {
+        if (!buf->ReadOneBit())
+        {
+            continue;
+        }
+
 		if (buf->ReadOneBit())
 		{
 			move->simulationdata[i].m_flSimulationTime = buf->ReadBitFloat();
diff --git a/game/shared/usercmd.h b/game/shared/usercmd.h
index 764e88c0a7..89a102e8b4 100644
--- a/game/shared/usercmd.h
+++ b/game/shared/usercmd.h
@@ -57,8 +57,9 @@ struct SimulationData
     // TODO_ENHANCED:
     // For now we send the last received update for animations.
     // anim time is unreliable on low fps.
-    float m_flSimulationTime;
-	float m_flAnimTime;   
+	float m_flSimulationTime;
+	float m_flAnimTime;
+	bool m_bEntityExists;
 };
 
 class CEntityGroundContact