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diff --git a/public/engine/IStaticPropMgr.h b/public/engine/IStaticPropMgr.h
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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef IPROPS_H
+#define IPROPS_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "interface.h"
+#include "mathlib/vector.h"
+#include "utlvector.h"
+#include "basehandle.h"
+
+
+struct vcollide_t;
+struct Ray_t;
+class IClientRenderable;
+class CGameTrace;
+typedef CGameTrace trace_t;
+class IVPhysicsKeyHandler;
+class IPhysicsEnvironment;
+class ICollideable;
+
+
+//-----------------------------------------------------------------------------
+// Interface versions for static props
+//-----------------------------------------------------------------------------
+#define INTERFACEVERSION_STATICPROPMGR_CLIENT		"StaticPropMgrClient004"
+#define INTERFACEVERSION_STATICPROPMGR_SERVER		"StaticPropMgrServer002"
+
+
+//-----------------------------------------------------------------------------
+// Interface for static props
+//-----------------------------------------------------------------------------
+abstract_class IStaticPropMgr
+{
+public:
+	// Create physics representations of props
+	virtual void	CreateVPhysicsRepresentations( IPhysicsEnvironment *physenv, IVPhysicsKeyHandler *pDefaults, void *pGameData ) = 0;
+
+	// Purpose: Trace a ray against the specified static Prop. Returns point of intersection in trace_t
+	virtual void	TraceRayAgainstStaticProp( const Ray_t& ray, int staticPropIndex, trace_t& tr ) = 0;
+
+	// Is a base handle a static prop?
+	virtual bool	IsStaticProp( IHandleEntity *pHandleEntity ) const = 0;
+	virtual bool	IsStaticProp( CBaseHandle handle ) const = 0;
+
+	// returns a collideable interface to static props
+	virtual ICollideable *GetStaticPropByIndex( int propIndex ) = 0;
+};
+
+abstract_class IStaticPropMgrClient : public IStaticPropMgr
+{
+public:
+	// Recomputes the static prop opacity given a view origin
+	virtual void	ComputePropOpacity( const Vector &viewOrigin, float factor ) = 0;
+
+	// Adds decals to static props, returns point of decal in trace_t
+	virtual void	AddDecalToStaticProp( const Vector& rayStart, const Vector& rayEnd,
+		int staticPropIndex, int decalIndex, bool doTrace, trace_t& tr ) = 0;
+	// Adds/removes shadows from static props
+	virtual void	AddShadowToStaticProp( unsigned short shadowHandle, IClientRenderable* pRenderable ) = 0;
+	virtual void	RemoveAllShadowsFromStaticProp( IClientRenderable* pRenderable ) = 0;
+
+	// Gets the lighting + material color of a static prop
+	virtual void	GetStaticPropMaterialColorAndLighting( trace_t* pTrace,
+		int staticPropIndex, Vector& lighting, Vector& matColor ) = 0;
+
+	//Changes made specifically to support the Portal mod (smack Dave Kircher if something breaks) (Added separately to both client and server to not mess with versioning)
+	//===================================================================
+	virtual void GetAllStaticProps( CUtlVector<ICollideable *> *pOutput ) = 0; //testing function that will eventually be removed
+	virtual void GetAllStaticPropsInAABB( const Vector &vMins, const Vector &vMaxs, CUtlVector<ICollideable *> *pOutput ) = 0; //get all static props that exist wholly or partially in an AABB
+	virtual void GetAllStaticPropsInOBB( const Vector &ptOrigin, const Vector &vExtent1, const Vector &vExtent2, const Vector &vExtent3, CUtlVector<ICollideable *> *pOutput ) = 0; //get all static props that exist wholly or partially in an OBB
+	//===================================================================
+
+	virtual void DrawStaticProps( IClientRenderable **pProps, int count, bool bShadowDepth, bool drawVCollideWireframe ) = 0;
+	virtual void AddColorDecalToStaticProp( Vector const& rayStart, Vector const& rayEnd,
+		int staticPropIndex, int decalIndex, bool doTrace, trace_t& tr, bool bUseColor, Color cColor ) = 0;
+};
+
+class IStaticPropMgrServer : public IStaticPropMgr
+{
+public:
+
+
+	//Changes made specifically to support the Portal mod (smack Dave Kircher if something breaks) (Added separately to both client and server to not mess with versioning)
+	//===================================================================
+	virtual void GetAllStaticProps( CUtlVector<ICollideable *> *pOutput ) = 0; //testing function that will eventually be removed
+	virtual void GetAllStaticPropsInAABB( const Vector &vMins, const Vector &vMaxs, CUtlVector<ICollideable *> *pOutput ) = 0; //get all static props that exist wholly or partially in an AABB
+	virtual void GetAllStaticPropsInOBB( const Vector &ptOrigin, const Vector &vExtent1, const Vector &vExtent2, const Vector &vExtent3, CUtlVector<ICollideable *> *pOutput ) = 0; //get all static props that exist wholly or partially in an OBB
+	//===================================================================
+};
+
+
+#endif // IPROPS_H