Experimental bot simulation implementation

Simulate bot user commands on the server. The simulation system is experimental and only runs if cvar 'sv_simulateBots' is set, and bots are created on the server.

r5dev/game/server/physics_main.cpp

@@ -5,14 +5,41 @@
 // $NoKeywords: $
 //=============================================================================//
 #include "core/stdafx.h"
+#include "tier1/cvar.h"
 #include "player.h"
 #include "physics_main.h"
+#include "engine/client/client.h"
+#include "game/shared/util_shared.h"
+
+//-----------------------------------------------------------------------------
+// Purpose: Runs the command simulation for fake players
+//-----------------------------------------------------------------------------
+void Physics_RunBotSimulation(bool bSimulating)
+{
+	if (!sv_simulateBots->GetBool())
+		return;
+
+	for (int i = 0; i < MAX_PLAYERS; i++)
+	{
+		CClient* pClient = g_pClient->GetClient(i);
+		if (!pClient)
+			continue;
+
+		if (pClient->IsActive() && pClient->IsFakeClient())
+		{
+			CPlayer* pPlayer = UTIL_PlayerByIndex(i + 1);
+			if (pPlayer)
+				pPlayer->RunNullCommand();
+		}
+	}
+}
 
 //-----------------------------------------------------------------------------
 // Purpose: Runs the main physics simulation loop against all entities ( except players )
 //-----------------------------------------------------------------------------
 void Physics_RunThinkFunctions(bool bSimulating)
 {
+	Physics_RunBotSimulation(bSimulating);
 	v_Physics_RunThinkFunctions(bSimulating);
 }
 

r5dev/game/server/player.h

@@ -20,6 +20,13 @@
 #include "basecombatcharacter.h"
 #include <mathlib/vector4d.h>
 
+enum PlayerConnectedState
+{
+	PlayerConnected,
+	PlayerDisconnecting,
+	PlayerDisconnected,
+};
+
 
 // TODO: Move to separate header file!!
 struct ThirdPersonViewData
@@ -244,6 +251,9 @@ public:
 	void PlayerRunCommand(CUserCmd* pUserCmd, IMoveHelper* pMover);
 	void SetLastUserCommand(CUserCmd* pUserCmd);
 
+	bool	IsConnected() const { return m_iConnected != PlayerDisconnected; }
+	bool	IsDisconnecting() const { return m_iConnected == PlayerDisconnecting; }
+
 private:
 	int m_StuckLast;
 	char gap_5a8c[4];

r5dev/game/shared/usercmd.h

@@ -38,7 +38,7 @@ public:
 
 	CUserCmd* Copy(CUserCmd* pSource)
 	{
-		v_CUserCmd__Copy(this, pSource);
+		return v_CUserCmd__Copy(this, pSource);
 	}
 
 	int32_t command_number;

r5dev/game/shared/util_shared.cpp

@@ -15,6 +15,11 @@
 
 CPlayer* UTIL_PlayerByIndex(int nIndex)
 {
+	if (nIndex < 1 || nIndex > g_pGlobals->m_nMaxClients || nIndex == FL_EDICT_INVALID)
+		return nullptr;
 
+	// !TODO: Improve this!!!
+	CPlayer* pPlayer = *reinterpret_cast<CPlayer**>(g_pGlobals->m_pInterlock + nIndex + 0x7808);
+	return pPlayer;
 }
 #endif // CLIENT_DLL

r5dev/game/shared/util_shared.h

@@ -0,0 +1,16 @@
+//===== Copyright <20> 1996-2005, Valve Corporation, All rights reserved. ======//
+//
+// Purpose: 
+//
+//===========================================================================//
+#ifndef UTIL_SHARED_H
+#define UTIL_SHARED_H
+#ifndef CLIENT_DLL
+#include "game/server/player.h"
+#endif
+
+#ifndef CLIENT_DLL
+CPlayer* UTIL_PlayerByIndex(int nIndex);
+#endif // CLIENT_DLL
+
+#endif // !UTIL_SHARED_H

r5dev/tier1/IConVar.cpp

@@ -107,6 +107,7 @@ void ConVar::Init(void)
 	sv_statusRefreshRate  = ConVar::Create("sv_statusRefreshRate" , "0.5", FCVAR_RELEASE, "Server status refresh rate (seconds).", false, 0.f, false, 0.f, nullptr, nullptr);
 	sv_autoReloadRate     = ConVar::Create("sv_autoReloadRate"    , "0"  , FCVAR_RELEASE, "Time in seconds between each server auto-reload (disabled if null). ", true, 0.f, false, 0.f, nullptr, nullptr);
 	sv_quota_stringCmdsPerSecond = ConVar::Create("sv_quota_stringCmdsPerSecond", "16", FCVAR_RELEASE, "How many string commands per second clients are allowed to submit, 0 to disallow all string commands.", true, 0.f, false, 0.f, nullptr, nullptr);
+	sv_simulateBots = ConVar::Create("sv_simulateBots", "1", FCVAR_RELEASE, "Simulate user commands for bots on the server.", true, 0.f, false, 0.f, nullptr, nullptr);
 #ifdef DEDICATED
 	sv_rcon_debug       = ConVar::Create("sv_rcon_debug"      , "0" , FCVAR_RELEASE, "Show rcon debug information ( !slower! ).", false, 0.f, false, 0.f, nullptr, nullptr);
 	sv_rcon_sendlogs    = ConVar::Create("sv_rcon_sendlogs"   , "0" , FCVAR_RELEASE, "Network console logs to connected and authenticated sockets.", false, 0.f, false, 0.f, nullptr, nullptr);

r5dev/tier1/cvar.cpp

@@ -74,6 +74,8 @@ ConVar* sv_forceChatToTeamOnly             = nullptr;
 ConVar* sv_autoReloadRate                  = nullptr;
 ConVar* sv_quota_stringCmdsPerSecond       = nullptr;
 
+ConVar* sv_simulateBots                    = nullptr;
+
 #ifdef DEDICATED
 ConVar* sv_rcon_debug                      = nullptr;
 ConVar* sv_rcon_sendlogs                   = nullptr;

r5dev/tier1/cvar.h

@@ -70,6 +70,8 @@ extern ConVar* sv_forceChatToTeamOnly;
 extern ConVar* sv_autoReloadRate;
 extern ConVar* sv_quota_stringCmdsPerSecond;
 
+extern ConVar* sv_simulateBots;
+
 #ifdef DEDICATED
 extern ConVar* sv_rcon_debug;
 extern ConVar* sv_rcon_sendlogs;