TODO: figure out why we need to do this

game/client/cstrike/c_cs_player.cpp

@@ -690,6 +690,7 @@ IMPLEMENT_CLIENTCLASS_DT( C_CSPlayer, DT_CSPlayer, CCSPlayer )
 	RecvPropInt( RECVINFO( m_iClass ) ),
 	RecvPropInt( RECVINFO( m_ArmorValue ) ),
 	RecvPropQAngles( RECVINFO( m_angEyeAngles ) ),
+	RecvPropQAngles( RECVINFO( m_angRenderAngles ) ),
 	RecvPropFloat( RECVINFO( m_flStamina ) ),
 	RecvPropInt( RECVINFO( m_bHasDefuser ), 0, RecvProxy_HasDefuser ),
 	RecvPropInt( RECVINFO( m_bNightVisionOn), 0, RecvProxy_NightVision ),
@@ -738,6 +739,8 @@ C_CSPlayer::C_CSPlayer() :
 
 	AddVar( &m_angEyeAngles, &m_iv_angEyeAngles, LATCH_SIMULATION_VAR );
 
+	// interpolation on m_angRenderAngles later
+
 	m_iLastAddonBits = m_iAddonBits = 0;
 	m_iLastPrimaryAddon = m_iLastSecondaryAddon = WEAPON_NONE;
 	m_iProgressBarDuration = 0;
@@ -879,19 +882,6 @@ int C_CSPlayer::GetCurrentAssaultSuitPrice()
 	}
 }
 
-const QAngle& C_CSPlayer::GetRenderAngles()
-{
-	if ( IsRagdoll() )
-	{
-		return vec3_angle;
-    }
-	else
-	{
-		return BaseClass::GetRenderAngles();
-	}
-}
-
-
 float g_flFattenAmt = 4;
 void C_CSPlayer::GetShadowRenderBounds( Vector &mins, Vector &maxs, ShadowType_t shadowType )
 {
@@ -2180,7 +2170,7 @@ void C_CSPlayer::FireGameEvent( IGameEvent* event )
 
 				C_AnimationLayer backupAnimLayers[C_BaseAnimatingOverlay::MAX_OVERLAYS];
 				Vector vecBackupPosition = player->GetAbsOrigin();
-				QAngle angBackupAngles	 = player->GetAbsAngles();
+				QAngle angBackupAngles	 = player->GetRenderAngles();
 				auto flOldCycle			 = player->GetCycle();
 				auto iOldSequence		 = player->GetSequence();
 
@@ -2205,9 +2195,9 @@ void C_CSPlayer::FireGameEvent( IGameEvent* event )
 											  event->GetFloat( "position_y" ),
 											  event->GetFloat( "position_z" ) ) );
 
-				player->SetAbsAngles( QAngle( event->GetFloat( "angle_x" ),
+				player->m_angRenderAngles = QAngle( event->GetFloat( "angle_x" ),
 													event->GetFloat( "angle_y" ),
-											  event->GetFloat( "angle_z" ) ) );
+													event->GetFloat( "angle_z" ) );
 
 				const auto numposeparams = event->GetInt( "num_poseparams" );
 				Assert( numposeparams == player->GetModelPtr()->GetNumPoseParameters() );
@@ -2311,7 +2301,7 @@ void C_CSPlayer::FireGameEvent( IGameEvent* event )
 						pos++;
 					}
 
-					auto angles = player->GetAbsAngles();
+					auto angles = player->GetRenderAngles();
 
 					if ( pRecord->m_angAbsRotation != angles )
 					{
@@ -2440,7 +2430,7 @@ void C_CSPlayer::FireGameEvent( IGameEvent* event )
 				player->m_nSequence = iOldSequence;
 				player->m_flCycle	= flOldCycle;
 				player->SetAbsOrigin( vecBackupPosition );
-				player->SetAbsAngles( angBackupAngles );
+				player->m_angRenderAngles = angBackupAngles;
 
 				for ( int i = 0; i < MAXSTUDIOPOSEPARAM; i++ )
 				{

game/client/cstrike/c_cs_player.h

@@ -6,6 +6,7 @@
 
 #ifndef C_CS_PLAYER_H
 #define C_CS_PLAYER_H
+#include "mathlib/vector.h"
 #ifdef _WIN32
 #pragma once
 #endif
@@ -420,6 +421,8 @@ private:
 	};
 
 	CUtlCircularBuffer< HitboxRecord, MAX_HISTORY_HITBOX_RECORDS > m_HitboxTrack[MAX_PLAYERS + 1];
+
+	QAngle m_angRenderAngles;
 };
 
 C_CSPlayer* GetLocalOrInEyeCSPlayer( void );

game/client/in_main.cpp

@@ -1321,7 +1321,7 @@ void CInput::CreateMove ( int sequence_number, float input_sample_frametime, boo
 		}
 
 		cmd->simulationdata[i].sim_time	 = pEntity->m_flInterpolatedSimulationTime;
-		cmd->simulationdata[i].anim_time = pEntity->m_flInterpolatedAnimTime;
+		cmd->simulationdata[i].anim_time = pEntity->m_flAnimTime;
 	}
 
 #ifdef CSTRIKE_DLL

game/server/BaseAnimatingOverlay.cpp

@@ -480,7 +480,7 @@ void CBaseAnimatingOverlay::GetSkeleton( CStudioHdr *pStudioHdr, Vector pos[], Q
 	if ( m_pIk )
 	{
 		CIKContext auto_ik;
-		auto_ik.Init( pStudioHdr, GetAbsAngles(), GetAbsOrigin(), gpGlobals->curtime, m_iIKCounter, boneMask );
+		auto_ik.Init( pStudioHdr, GetRenderAngles(), GetAbsOrigin(), gpGlobals->curtime, m_iIKCounter, boneMask );
 		boneSetup.CalcAutoplaySequences( pos, q, gpGlobals->curtime, &auto_ik );
 	}
 	else

game/server/baseanimating.cpp

@@ -1670,7 +1670,7 @@ void CBaseAnimating::CalculateIKLocks( float currentTime )
 
 	// FIXME: trace based on gravity or trace based on angles?
 	Vector up;
-	AngleVectors( GetAbsAngles(), NULL, NULL, &up );
+	AngleVectors( GetRenderAngles(), NULL, NULL, &up );
 
 	// FIXME: check number of slots?
 	float minHeight = FLT_MAX;
@@ -1781,7 +1781,7 @@ void CBaseAnimating::CalculateIKLocks( float currentTime )
 					else if (trace.DidHitNonWorldEntity())
 					{
 						pTarget->SetPos( trace.endpos );
-						pTarget->SetAngles( GetAbsAngles() );
+						pTarget->SetAngles( GetRenderAngles() );
 
 						// only do this on forward tracking or commited IK ground rules
 						if (pTarget->est.release < 0.1)
@@ -1815,7 +1815,7 @@ void CBaseAnimating::CalculateIKLocks( float currentTime )
 					else
 					{
 						pTarget->SetPos( trace.endpos );
-						pTarget->SetAngles( GetAbsAngles() );
+						pTarget->SetAngles( GetRenderAngles() );
 						pTarget->SetOnWorld( true );
 					}
 				}
@@ -2031,7 +2031,7 @@ void CBaseAnimating::SetupBones( matrix3x4_t *pBoneToWorld, int boneMask )
 		// FIXME: pass this into Studio_BuildMatrices to skip transforms
 		CBoneBitList boneComputed;
 		m_iIKCounter++;
-		m_pIk->Init( pStudioHdr, GetAbsAngles(), adjOrigin, gpGlobals->curtime, m_iIKCounter, boneMask );
+		m_pIk->Init( pStudioHdr, GetRenderAngles(), adjOrigin, gpGlobals->curtime, m_iIKCounter, boneMask );
 		GetSkeleton( pStudioHdr, pos, q, boneMask );
 
         UpdateIKLocks( gpGlobals->curtime );
@@ -2055,7 +2055,7 @@ void CBaseAnimating::SetupBones( matrix3x4_t *pBoneToWorld, int boneMask )
 		{
 			BuildMatricesWithBoneMerge( 
 				pStudioHdr, 
-				GetAbsAngles(), 
+				GetRenderAngles(), 
 				adjOrigin, 
 				pos, 
 				q, 
@@ -2074,7 +2074,7 @@ void CBaseAnimating::SetupBones( matrix3x4_t *pBoneToWorld, int boneMask )
 
 	Studio_BuildMatrices( 
 		pStudioHdr, 
-		GetAbsAngles(), 
+		GetRenderAngles(), 
 		adjOrigin, 
 		pos, 
 		q, 
@@ -3036,7 +3036,7 @@ void CBaseAnimating::GetSkeleton( CStudioHdr *pStudioHdr, Vector pos[], Quaterni
 	if ( m_pIk )
 	{
 		CIKContext auto_ik;
-		auto_ik.Init( pStudioHdr, GetAbsAngles(), GetAbsOrigin(), gpGlobals->curtime, m_iIKCounter, boneMask );
+		auto_ik.Init( pStudioHdr, GetRenderAngles(), GetAbsOrigin(), gpGlobals->curtime, m_iIKCounter, boneMask );
 		boneSetup.CalcAutoplaySequences( pos, q, gpGlobals->curtime, &auto_ik );
 	}
 	else

game/server/baseentity.h

@@ -427,6 +427,11 @@ public:
 	const Vector&			GetAbsOrigin( void ) const;
 	const QAngle&			GetAbsAngles( void ) const;
 
+	virtual const QAngle& GetRenderAngles( void )
+	{
+		return GetAbsAngles();
+	}
+
 	SolidType_t				GetSolid() const;
 	int			 			GetSolidFlags( void ) const;
 

game/server/cstrike/cs_player.cpp

@@ -302,6 +302,7 @@ IMPLEMENT_SERVERCLASS_ST( CCSPlayer, DT_CSPlayer )
 	SendPropInt( SENDINFO( m_iClass ), Q_log2( CS_NUM_CLASSES )+1, SPROP_UNSIGNED ),
 	SendPropInt( SENDINFO( m_ArmorValue ), 8 ),
 	SendPropQAngles(SENDINFO(m_angEyeAngles)),
+	SendPropQAngles(SENDINFO(m_angRenderAngles)),
 	SendPropBool( SENDINFO( m_bHasDefuser ) ),
 	SendPropBool( SENDINFO( m_bNightVisionOn ) ),	//send as int so we can use a RecvProxy on the client
 	SendPropBool( SENDINFO( m_bHasNightVision ) ),
@@ -1584,7 +1585,7 @@ void CCSPlayer::PostThink()
 	m_PlayerAnimState->Update( m_angEyeAngles[YAW], m_angEyeAngles[PITCH] );
 
 	// Use the m_angRotation instead.
-	SetAbsAngles( m_PlayerAnimState->GetRenderAngles() );
+	m_angRenderAngles = m_PlayerAnimState->GetRenderAngles();
 
 	// check if we need to apply a deafness DSP effect.
 	if ((m_applyDeafnessTime != 0.0f) && (m_applyDeafnessTime <= gpGlobals->curtime))

game/server/cstrike/cs_player.h

@@ -245,6 +245,8 @@ public:
 	static CCSPlayer *CreatePlayer( const char *className, edict_t *ed );
 	static CCSPlayer* Instance( int iEnt );
 
+	virtual const QAngle& GetRenderAngles( void );
+
 	virtual void		Precache();
 	virtual void		Spawn();
 	virtual void		InitialSpawn( void );
@@ -814,6 +816,7 @@ public:
 
 	// Copyed from EyeAngles() so we can send it to the client.
 	CNetworkQAngle( m_angEyeAngles );
+	CNetworkQAngle( m_angRenderAngles );
 
 	bool m_bVCollisionInitted;
 

game/server/player_lagcompensation.cpp

@@ -17,6 +17,9 @@
 #include "util.h"
 #include "utllinkedlist.h"
 #include "BaseAnimatingOverlay.h"
+#ifdef CSTRIKE_DLL
+#include "cs_player.h"
+#endif
 #include "tier0/vprof.h"
 
 // memdbgon must be the last include file in a .cpp file!!!
@@ -74,6 +77,9 @@ struct LagRecord
 	float m_masterCycle;
 	float m_poseParameters[MAXSTUDIOPOSEPARAM];
 	float m_encodedControllers[MAXSTUDIOBONECTRLS];
+#ifdef CSTRIKE_DLL
+	QAngle m_angRenderAngles;
+#endif
 };
 
 //
@@ -220,6 +226,15 @@ void CLagCompensationManager::TrackEntities()
 			}
 		}
 
+#ifdef CSTRIKE_DLL
+		auto csPlayer = dynamic_cast<CCSPlayer*>(pEntity);
+
+		if (csPlayer)
+		{
+			record.m_angRenderAngles = csPlayer->GetRenderAngles();
+		}
+#endif
+
 		track->Push( record );
 	}
 }
@@ -555,6 +570,16 @@ inline void CLagCompensationManager::BacktrackEntity( CBaseEntity* pEntity, int
 		flags |= LC_ANIM_OVERS_CHANGED;
 	}
 
+#ifdef CSTRIKE_DLL
+		auto csPlayer = dynamic_cast<CCSPlayer*>(pEntity);
+
+		if (csPlayer && foundAnim)
+		{
+			restore->m_angRenderAngles = csPlayer->GetRenderAngles();
+			csPlayer->m_angRenderAngles = recordAnim->m_angRenderAngles;
+		}
+#endif
+
 	Finish();
 }
 
@@ -653,6 +678,13 @@ void CLagCompensationManager::FinishLagCompensation( CBasePlayer* player )
 			}
 		}
 
+		auto csPlayer = dynamic_cast<CCSPlayer*>(pEntity);
+
+		if (csPlayer)
+		{
+			csPlayer->m_angRenderAngles = restore->m_angRenderAngles;
+		}
+
 		pEntity->SetSimulationTime( restore->m_flSimulationTime );
 		pEntity->SetAnimTime( restore->m_flAnimTime );
 	}

game/shared/cstrike/cs_player_shared.cpp

@@ -44,6 +44,22 @@
 ConVar weapon_accuracy_nospread( "weapon_accuracy_nospread", "0", FCVAR_REPLICATED );
 #define	CS_MASK_SHOOT (MASK_SOLID|CONTENTS_DEBRIS)
 
+const QAngle& CCSPlayer::GetRenderAngles()
+{
+#ifdef CLIENT_DLL
+	if ( IsRagdoll() )
+	{
+		return vec3_angle;
+    }
+	else
+	{
+		return m_angRenderAngles;
+	}
+#else
+	return m_angRenderAngles;
+#endif
+}
+
 void DispatchEffect( const char *pName, const CEffectData &data );
 
 #ifdef _DEBUG
@@ -541,7 +557,7 @@ void CCSPlayer::FireBullet(
 			QAngle angles[MAXSTUDIOBONES];
 			int indexes[MAXSTUDIOBONES];
 
-			auto angle	  = lagPlayer->GetAbsAngles();
+			auto angle	  = lagPlayer->GetRenderAngles();
 			auto position = lagPlayer->GetAbsOrigin();
 
 			event->SetFloat( "position_x", position.x );

game/shared/cstrike/fx_cs_shared.cpp

@@ -336,7 +336,7 @@ void FX_FireBullets(
 			C_CSPlayer::HitboxRecord record;
 
 			record.m_vecAbsOrigin	= lagPlayer->GetAbsOrigin();
-			record.m_angAbsRotation = lagPlayer->GetAbsAngles();
+			record.m_angAbsRotation = lagPlayer->GetRenderAngles();
 
 			record.m_nAttackerTickBase = pPlayer->m_nTickBase;
 			record.m_flSimulationTime  = lagPlayer->m_flInterpolatedSimulationTime;