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game/server/env_zoom.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================//
+
+#include "cbase.h"
+#include "env_zoom.h"
+
+#ifdef HL2_DLL
+#include "hl2_player.h"
+#endif
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+#define ENV_ZOOM_OVERRIDE (1<<0)
+
+class CEnvZoom : public CPointEntity
+{
+public:
+	DECLARE_CLASS( CEnvZoom, CPointEntity );
+
+	void	InputZoom( inputdata_t &inputdata );
+	void	InputUnZoom( inputdata_t &inputdata );
+
+	int	GetFOV( void ) { return m_nFOV;	}
+	float GetSpeed( void ) { return m_flSpeed;	}
+private:
+
+	float	m_flSpeed;
+	int		m_nFOV;
+
+	DECLARE_DATADESC();
+};
+
+LINK_ENTITY_TO_CLASS( env_zoom, CEnvZoom );
+
+BEGIN_DATADESC( CEnvZoom )
+
+	DEFINE_KEYFIELD( m_flSpeed, FIELD_FLOAT, "Rate" ),
+	DEFINE_KEYFIELD( m_nFOV, FIELD_INTEGER, "FOV" ),
+
+	DEFINE_INPUTFUNC( FIELD_VOID, "Zoom", InputZoom ),
+	DEFINE_INPUTFUNC( FIELD_VOID, "UnZoom", InputUnZoom ),
+
+END_DATADESC()
+
+bool CanOverrideEnvZoomOwner( CBaseEntity *pZoomOwner )
+{
+	CEnvZoom *pZoom = dynamic_cast<CEnvZoom*>(pZoomOwner );
+
+	if ( pZoom == NULL || ( pZoom && pZoom->HasSpawnFlags( ENV_ZOOM_OVERRIDE ) == false ) )
+		 return false;
+
+	return true;
+}
+
+float GetZoomOwnerDesiredFOV( CBaseEntity *pZoomOwner )
+{
+	if ( CanOverrideEnvZoomOwner( pZoomOwner ) )
+	{
+		CEnvZoom *pZoom = dynamic_cast<CEnvZoom*>( pZoomOwner );
+
+		return pZoom->GetFOV();
+	}
+
+	return 0;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : &inputdata - 
+//-----------------------------------------------------------------------------
+void CEnvZoom::InputZoom( inputdata_t &inputdata )
+{
+	CBasePlayer *pPlayer = UTIL_GetLocalPlayer();
+
+	if ( pPlayer )
+	{
+
+#ifdef HL2_DLL
+		if ( pPlayer == pPlayer->GetFOVOwner() )
+		{
+			CHL2_Player *pHLPlayer = static_cast<CHL2_Player*>( pPlayer );
+
+			pHLPlayer->StopZooming();
+		}
+#endif
+
+		// If the player's already holding a fov from another env_zoom, we're allowed to overwrite it
+		if ( pPlayer->GetFOVOwner() && FClassnameIs( pPlayer->GetFOVOwner(), "env_zoom" ) )
+		{
+			pPlayer->ClearZoomOwner();
+		}
+
+		//Stuff the values
+		pPlayer->SetFOV( this, m_nFOV, m_flSpeed );
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : &inputdata - 
+//-----------------------------------------------------------------------------
+void CEnvZoom::InputUnZoom( inputdata_t &inputdata )
+{
+	CBasePlayer *pPlayer = UTIL_GetLocalPlayer();
+
+	if ( pPlayer )
+	{
+		// Stuff the values
+		pPlayer->SetFOV( this, 0 );
+	}
+}
+