Optimized network

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++)
     {
@@ -1312,6 +1318,7 @@ 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_bEntityExists    = true;
     }
 
 #ifdef CSTRIKE_DLL

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
+        if (to->simulationdata[i].m_bEntityExists)
-            != to->simulationdata[i].m_flSimulationTime)
+        {
+            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);
@@ -359,6 +366,11 @@ void ReadUsercmd( bf_read *buf, CUserCmd *move, CUserCmd *from )
 
     for (unsigned int i = 0; i <= highestEntityIndex; i++)
     {
+        if (!buf->ReadOneBit())
+        {
+            continue;
+        }
+
 		if (buf->ReadOneBit())
 		{
 			move->simulationdata[i].m_flSimulationTime = buf->ReadBitFloat();

game/shared/usercmd.h

@@ -59,6 +59,7 @@ struct SimulationData
     // anim time is unreliable on low fps.
 	float m_flSimulationTime;
 	float m_flAnimTime;
+	bool m_bEntityExists;
 };
 
 class CEntityGroundContact