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game/shared/tf2/weapon_shield.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose:			The Escort's Shield weapon
+//
+// $Revision: $
+// $NoKeywords: $
+//=============================================================================//
+
+#include "cbase.h"
+#include "weapon_shield.h"
+#include "in_buttons.h"
+#include <float.h>
+#include "mathlib/mathlib.h"
+#include "engine/IEngineSound.h"
+
+#if defined( CLIENT_DLL )
+#include "c_shield.h"
+#else
+#include "tf_shield.h"
+#endif
+
+//-----------------------------------------------------------------------------
+// Shield WEAPON
+//-----------------------------------------------------------------------------
+LINK_ENTITY_TO_CLASS( weapon_shield, CWeaponShield );
+PRECACHE_WEAPON_REGISTER(weapon_shield);
+
+IMPLEMENT_NETWORKCLASS_ALIASED( WeaponShield, DT_WeaponShield )
+
+BEGIN_NETWORK_TABLE(CWeaponShield, DT_WeaponShield)
+#ifdef CLIENT_DLL
+	RecvPropEHandle (RECVINFO(m_hDeployedShield)),
+#else
+	SendPropEHandle (SENDINFO(m_hDeployedShield)),
+#endif
+END_NETWORK_TABLE()
+
+
+BEGIN_PREDICTION_DATA( CWeaponShield  )
+
+	DEFINE_FIELD( m_bIsDeployed, FIELD_BOOLEAN ),
+	DEFINE_FIELD( m_bShieldPositionLocked, FIELD_BOOLEAN ),
+
+END_PREDICTION_DATA()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+CWeaponShield::CWeaponShield( void )
+{
+	SetPredictionEligible( true );
+	m_bIsDeployed = false;
+}
+
+void CWeaponShield::UpdateOnRemove( void )
+{
+#ifdef GAME_DLL
+	if ( m_hDeployedShield.Get() )
+	{
+		m_hDeployedShield.Get()->Remove( );
+		m_hDeployedShield.Set( NULL );
+	}
+#endif
+
+	// Chain at end to mimic destructor unwind order
+	BaseClass::UpdateOnRemove();
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Given the distance the hit occurred at, return the damage done
+//-----------------------------------------------------------------------------
+float CWeaponShield::GetDamage( float flDistance, int iLocation )
+{
+	// Can't injure at all over this distance
+	return 0.0;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+float CWeaponShield::GetFireRate( void )
+{	
+	return 1.0; 
+}
+
+
+//-----------------------------------------------------------------------------
+// Deploy the shield! 
+//-----------------------------------------------------------------------------
+bool CWeaponShield::Deploy( )
+{
+	if ( !BaseClass::Deploy() )
+		return false;
+
+	// NOTE: the underlying system can cause Deploy to be called twice in a row
+	if ( m_bIsDeployed )
+		return true;
+
+	// We gotta make the actual shield effect....
+	CBaseTFPlayer *pPlayer = ToBaseTFPlayer( GetOwner() );
+	if ( !pPlayer )
+		return false;
+
+#ifdef GAME_DLL
+	Assert( !m_hDeployedShield.Get().IsValid() ); 
+	m_hDeployedShield = CreateMobileShield( pPlayer );
+#endif
+
+	SetShieldPositionLocked( false );
+	m_bIsDeployed = true;
+
+	return true;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Remove the shield
+//-----------------------------------------------------------------------------
+bool CWeaponShield::Holster( CBaseCombatWeapon *pSwitchingTo )
+{
+#ifdef GAME_DLL
+	if ( m_hDeployedShield.Get() )
+	{
+		m_hDeployedShield.Get()->Remove( );
+		m_hDeployedShield.Set( NULL );
+	}
+#endif
+
+	m_bIsDeployed = false;
+
+	return BaseClass::Holster( pSwitchingTo );
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CWeaponShield::ItemPostFrame( void )
+{
+	CBaseTFPlayer *pPlayer = ToBaseTFPlayer( GetOwner() );
+	if (pPlayer == NULL)
+		return;
+
+	// Disabled
+	if ( ComputeEMPFireState() )
+	{
+		// Handle deployment & pick-up (firing is handled on the client)
+		if ( pPlayer->m_nButtons & IN_ATTACK2 )
+		{
+			if ( gpGlobals->curtime >= m_flNextPrimaryAttack) 
+			{
+				PrimaryAttack();
+			}
+		}
+	}
+
+	WeaponIdle();
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CWeaponShield::PrimaryAttack( void )
+{
+	CShield *shield = m_hDeployedShield.Get();
+	if ( shield )
+	{
+		SetShieldPositionLocked( !m_bShieldPositionLocked );
+
+#ifdef GAME_DLL
+		if ( m_bShieldPositionLocked )
+		{
+			ClientPrint( ToBasePlayer(GetOwner()), HUD_PRINTCENTER, "Projected Shield Locked" );
+		}
+		else
+		{
+			ClientPrint( ToBasePlayer(GetOwner()), HUD_PRINTCENTER, "Projected Shield Tracking" );
+		}
+#endif
+	}
+
+	m_flNextPrimaryAttack = gpGlobals->curtime + 0.25f;
+}
+
+
+//-----------------------------------------------------------------------------
+// Lock the projected shield
+//-----------------------------------------------------------------------------
+void CWeaponShield::SetShieldPositionLocked( bool bLocked )
+{
+	m_bShieldPositionLocked = bLocked; 
+	if ( m_hDeployedShield.Get() )
+	{
+		if ( bLocked && m_hDeployedShield.Get()->IsAlwaysOrienting() )
+		{
+			CBaseTFPlayer *pPlayer = ToBaseTFPlayer( GetOwner() );
+			m_hDeployedShield.Get()->SetCenterAngles( pPlayer->EyeAngles() );
+		}
+		m_hDeployedShield.Get()->SetAlwaysOrient( !bLocked );
+	}
+}
+
+
+//-----------------------------------------------------------------------------
+// Idle processing
+//-----------------------------------------------------------------------------
+void CWeaponShield::WeaponIdle( void )
+{
+	bool isEmped = IsOwnerEMPed();
+
+	if (m_hDeployedShield.Get())
+	{
+		m_hDeployedShield.Get()->SetEMPed( isEmped ); 
+	}
+}