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game/server/tf2/tf_func_no_build.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+#include "cbase.h"
+#include "tf_func_no_build.h"
+#include "tf_team.h"
+#include "NDebugOverlay.h"
+
+//-----------------------------------------------------------------------------
+// Purpose: Defines an area from which resources can be collected
+//-----------------------------------------------------------------------------
+class CFuncNoBuild : public CBaseEntity
+{
+	DECLARE_CLASS( CFuncNoBuild, CBaseEntity );
+public:
+	CFuncNoBuild();
+
+	DECLARE_DATADESC();
+
+	virtual void Spawn( void );
+	virtual void Precache( void );
+	virtual void Activate( void );
+
+	// Inputs
+	void	InputSetActive( inputdata_t &inputdata );
+	void	InputSetInactive( inputdata_t &inputdata );
+	void	InputToggleActive( inputdata_t &inputdata );
+
+	void	SetActive( bool bActive );
+	bool	GetActive() const;
+
+	bool	IsEmpty( void );
+	bool	PointIsWithin( const Vector &vecPoint );
+
+	bool	PreventsBuildOf( int iObjectType );
+
+	// need to transmit to players who are in commander mode
+	int		UpdateTransmitState() { return SetTransmitState( FL_EDICT_FULLCHECK ); }
+	int 	ShouldTransmit( const CCheckTransmitInfo *pInfo );
+
+private:
+	bool	m_bActive;
+	bool	m_bOnlyPreventTowers;
+};
+
+LINK_ENTITY_TO_CLASS( func_no_build, CFuncNoBuild);
+
+BEGIN_DATADESC( CFuncNoBuild )
+
+	// keys 
+	DEFINE_KEYFIELD_NOT_SAVED( m_bOnlyPreventTowers, FIELD_BOOLEAN, "OnlyPreventTowers" ),
+
+	// inputs
+	DEFINE_INPUTFUNC( FIELD_VOID, "SetActive", InputSetActive ),
+	DEFINE_INPUTFUNC( FIELD_VOID, "SetInactive", InputSetInactive ),
+	DEFINE_INPUTFUNC( FIELD_VOID, "ToggleActive", InputToggleActive ),
+
+END_DATADESC()
+
+
+PRECACHE_REGISTER( func_no_build );
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+CFuncNoBuild::CFuncNoBuild()
+{
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Initializes the resource zone
+//-----------------------------------------------------------------------------
+void CFuncNoBuild::Spawn( void )
+{
+	SetSolid( SOLID_BSP );
+	AddSolidFlags( FSOLID_TRIGGER );
+	SetMoveType( MOVETYPE_NONE );
+	AddEffects( EF_NODRAW );
+	SetModel( STRING( GetModelName() ) );
+	m_bActive = true;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CFuncNoBuild::Precache( void )
+{
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: See if we've got a gather point specified 
+//-----------------------------------------------------------------------------
+void CFuncNoBuild::Activate( void )
+{
+	BaseClass::Activate();
+	SetActive( true );
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CFuncNoBuild::InputSetActive( inputdata_t &inputdata )
+{
+	SetActive( true );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CFuncNoBuild::InputSetInactive( inputdata_t &inputdata )
+{
+	SetActive( false );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CFuncNoBuild::InputToggleActive( inputdata_t &inputdata )
+{
+	if ( m_bActive )
+	{
+		SetActive( false );
+	}
+	else
+	{
+		SetActive( true );
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CFuncNoBuild::SetActive( bool bActive )
+{
+	m_bActive = bActive;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+bool CFuncNoBuild::GetActive() const
+{
+	return m_bActive;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Return true if the specified point is within this zone
+//-----------------------------------------------------------------------------
+bool CFuncNoBuild::PointIsWithin( const Vector &vecPoint )
+{
+	return CollisionProp()->IsPointInBounds( vecPoint );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Return true if this zone prevents building of the specified type
+//-----------------------------------------------------------------------------
+bool CFuncNoBuild::PreventsBuildOf( int iObjectType )
+{
+	if ( m_bOnlyPreventTowers )
+		return ( iObjectType == OBJ_TOWER );
+
+	return true;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Transmit this to all players who are in commander mode
+//-----------------------------------------------------------------------------
+int CFuncNoBuild::ShouldTransmit( const CCheckTransmitInfo *pInfo )
+{
+	// Team rules may tell us that we should
+	CBaseEntity* pRecipientEntity = CBaseEntity::Instance( pInfo->m_pClientEnt );
+	Assert( pRecipientEntity->IsPlayer() );
+	
+	CBasePlayer *pPlayer = (CBasePlayer*)pRecipientEntity;
+	if ( pPlayer->GetTeam() )
+	{
+		if (pPlayer->GetTeam()->ShouldTransmitToPlayer( pPlayer, this ))
+			return FL_EDICT_ALWAYS;
+	}
+
+	return FL_EDICT_DONTSEND;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Does a nobuild zone prevent us from building?
+//-----------------------------------------------------------------------------
+bool PointInNoBuild( CBaseObject *pObject, const Vector &vecBuildOrigin )
+{
+	// Find out whether we're in a resource zone or not
+	CBaseEntity *pEntity = NULL;
+	while ((pEntity = gEntList.FindEntityByClassname( pEntity, "func_no_build" )) != NULL)
+	{
+		CFuncNoBuild *pNoBuild = (CFuncNoBuild *)pEntity;
+
+		// Are we within this no build?
+		if ( pNoBuild->GetActive() && pNoBuild->PointIsWithin( vecBuildOrigin ) )
+		{
+			if ( pNoBuild->PreventsBuildOf( pObject->GetType() ) )
+				return true;	// prevent building.
+		}
+	}
+
+	return false; // Building should be ok.
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Return true if a nobuild zone prevents building this object at the specified origin
+//-----------------------------------------------------------------------------
+bool NoBuildPreventsBuild( CBaseObject *pObject, const Vector &vecBuildOrigin )
+{
+	// Find out whether we're in a no build zone or not
+	if ( PointInNoBuild( pObject, vecBuildOrigin ) )
+	{
+		return true;
+	}
+
+	return false;
+}