1

game/server/pointteleport.cpp

@@ -0,0 +1,147 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Teleports a named entity to a given position and restores
+//			it's physics state
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#include "cbase.h"
+
+
+#include "in_buttons.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+#define	SF_TELEPORT_TO_SPAWN_POS	0x00000001
+#define	SF_TELEPORT_INTO_DUCK		0x00000002 ///< episodic only: player should be ducked after this teleport
+
+class CPointTeleport : public CBaseEntity
+{
+	DECLARE_CLASS( CPointTeleport, CBaseEntity );
+public:
+	void	Activate( void );
+
+	void InputTeleport( inputdata_t &inputdata );
+
+private:
+	
+	bool	EntityMayTeleport( CBaseEntity *pTarget );
+
+	Vector m_vSaveOrigin;
+	QAngle m_vSaveAngles;
+
+	DECLARE_DATADESC();
+};
+
+
+LINK_ENTITY_TO_CLASS( point_teleport, CPointTeleport );
+
+
+BEGIN_DATADESC( CPointTeleport )
+
+	DEFINE_FIELD( m_vSaveOrigin, FIELD_VECTOR ),
+	DEFINE_FIELD( m_vSaveAngles, FIELD_VECTOR ),
+
+	DEFINE_INPUTFUNC( FIELD_VOID, "Teleport", InputTeleport ),
+
+END_DATADESC()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : *pTarget - 
+// Output : Returns true if the entity may be teleported
+//-----------------------------------------------------------------------------
+bool CPointTeleport::EntityMayTeleport( CBaseEntity *pTarget )
+{
+	if ( pTarget->GetMoveParent() != NULL )
+	{
+		// Passengers in a vehicle are allowed to teleport; their behavior handles it
+		CBaseCombatCharacter *pBCC = pTarget->MyCombatCharacterPointer();
+		if ( pBCC == NULL || ( pBCC != NULL && pBCC->IsInAVehicle() == false ) )
+			return false;
+	}
+
+	return true;
+}
+
+//------------------------------------------------------------------------------
+// Purpose:
+//------------------------------------------------------------------------------
+void CPointTeleport::Activate( void )
+{
+	// Start with our origin point
+	m_vSaveOrigin = GetAbsOrigin();
+	m_vSaveAngles = GetAbsAngles();
+
+	// Save off the spawn position of the target if instructed to do so
+	if ( m_spawnflags & SF_TELEPORT_TO_SPAWN_POS )
+	{
+		CBaseEntity *pTarget = gEntList.FindEntityByName( NULL, m_target );
+		if ( pTarget )
+		{
+			// If teleport object is in a movement hierarchy, remove it first
+			if ( EntityMayTeleport( pTarget ) )
+			{
+				// Save the points
+				m_vSaveOrigin = pTarget->GetAbsOrigin();
+				m_vSaveAngles = pTarget->GetAbsAngles();
+			}
+			else
+			{
+				Warning("ERROR: (%s) can't teleport object (%s) as it has a parent (%s)!\n",GetDebugName(),pTarget->GetDebugName(),pTarget->GetMoveParent()->GetDebugName());
+				BaseClass::Activate();
+				return;
+			}
+		}
+		else
+		{
+			Warning("ERROR: (%s) target '%s' not found. Deleting.\n", GetDebugName(), STRING(m_target));
+			UTIL_Remove( this );
+			return;
+		}
+	}
+
+	BaseClass::Activate();
+}
+
+//------------------------------------------------------------------------------
+// Purpose:
+//------------------------------------------------------------------------------
+void CPointTeleport::InputTeleport( inputdata_t &inputdata )
+{
+	// Attempt to find the entity in question
+	CBaseEntity *pTarget = gEntList.FindEntityByName( NULL, m_target, this, inputdata.pActivator, inputdata.pCaller );
+	if ( pTarget == NULL )
+		return;
+
+	// If teleport object is in a movement hierarchy, remove it first
+	if ( EntityMayTeleport( pTarget ) == false )
+	{
+		Warning("ERROR: (%s) can't teleport object (%s) as it has a parent (%s)!\n",GetDebugName(),pTarget->GetDebugName(),pTarget->GetMoveParent()->GetDebugName());
+		return;
+	}
+
+	// in episodic, we have a special spawn flag that forces Gordon into a duck
+#ifdef HL2_EPISODIC
+	if ( (m_spawnflags & SF_TELEPORT_INTO_DUCK) && pTarget->IsPlayer() ) 
+	{
+		CBasePlayer *pPlayer = ToBasePlayer( pTarget );
+		if ( pPlayer != NULL )
+		{
+			pPlayer->m_nButtons |= IN_DUCK;
+			pPlayer->AddFlag( FL_DUCKING );
+			pPlayer->m_Local.m_bDucked = true;
+			pPlayer->m_Local.m_bDucking = true;
+			pPlayer->m_Local.m_flDucktime = 0.0f;
+			pPlayer->SetViewOffset( VEC_DUCK_VIEW_SCALED( pPlayer ) );
+			pPlayer->SetCollisionBounds( VEC_DUCK_HULL_MIN, VEC_DUCK_HULL_MAX );
+		}
+	}		
+#endif
+
+	pTarget->Teleport( &m_vSaveOrigin, &m_vSaveAngles, NULL );
+}
+