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diff --git a/hammer/mapdecal.h b/hammer/mapdecal.h
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+++ b/hammer/mapdecal.h
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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Defines a decal helper. The decal attaches itself to nearby
+//			solids, dynamically creating decal faces as necessary.
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef MAPDECAL_H
+#define MAPDECAL_H
+#pragma once
+
+#include "MapHelper.h"
+
+
+
+class CHelperInfo;
+class CMapFace;
+class CRender3D;
+class IEditorTexture;
+
+
+//
+// Structure containing a decal face and the solid to which it is attached.
+// We keep one of these for every decal face that is created.
+//
+struct DecalFace_t
+{
+	CMapFace *pFace;		// Textured face representing the decal.
+	CMapSolid *pSolid;		// The solid to which the face is attached.
+};
+
+
+class CMapDecal : public CMapHelper
+{
+	public:
+
+		DECLARE_MAPCLASS(CMapDecal,CMapHelper)
+
+		//
+		// Factory for building from a list of string parameters.
+		//
+		static CMapClass *CreateMapDecal(CHelperInfo *pInfo, CMapEntity *pParent);
+
+		//
+		// Construction/destruction:
+		//
+		CMapDecal(void);
+		CMapDecal(float *pfMins, float *pfMaxs);
+		~CMapDecal(void);
+
+		void CalcBounds(BOOL bFullUpdate = FALSE);
+
+		virtual CMapClass *Copy(bool bUpdateDependencies);
+		virtual CMapClass *CopyFrom(CMapClass *pFrom, bool bUpdateDependencies);
+
+		virtual void OnNotifyDependent(CMapClass *pObject, Notify_Dependent_t eNotifyType);
+		virtual void OnParentKeyChanged(const char* szKey, const char* szValue);
+		virtual void OnPaste(CMapClass *pCopy, CMapWorld *pSourceWorld, CMapWorld *pDestWorld, const CMapObjectList &OriginalList, CMapObjectList &NewList);
+		virtual void OnRemoveFromWorld(CMapWorld *pWorld, bool bNotifyChildren);
+
+		virtual void Render3D(CRender3D *pRender);
+
+		int SerializeRMF(std::fstream &File, BOOL bRMF);
+		int SerializeMAP(std::fstream &File, BOOL bRMF);
+
+		bool IsVisualElement(void) { return(true); }
+		
+		const char* GetDescription() { return("Decal helper"); }
+
+		virtual void PostloadWorld(CMapWorld *pWorld);
+
+		void DecalAllSolids(CMapWorld *pWorld);
+
+		bool ShouldRenderLast(void) { return true; }
+
+	protected:
+
+		//
+		// Implements CMapAtom transformation functions.
+		//
+		void DoTransform(const VMatrix &matrix);
+		
+		void AddSolid(CMapSolid *pSolid);
+
+		int CanDecalSolid(CMapSolid *pSolid, CMapFace **ppFaces);
+		int DecalSolid(CMapSolid *pSolid);
+
+		void RebuildDecalFaces(void);
+
+		IEditorTexture *m_pTexture;		// Pointer to the texture this decal uses.
+		CMapObjectList m_Solids;	// List of solids to which we are attached.
+		CUtlVector<DecalFace_t*> m_Faces;		// List of decal faces and the solids that they are attached to.
+};
+
+
+#endif // MAPDECAL_H