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diff --git a/src/mg_decoration.h b/src/mg_decoration.h
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+/*
+Minetest
+Copyright (C) 2010-2013 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef MG_DECORATION_HEADER
+#define MG_DECORATION_HEADER
+
+#include <set>
+#include "mapnode.h"
+
+class NoiseParams;
+class Mapgen;
+class ManualMapVoxelManipulator;
+class PseudoRandom;
+
+enum DecorationType {
+	DECO_SIMPLE,
+	DECO_SCHEMATIC,
+	DECO_LSYSTEM
+};
+
+#if 0
+struct CutoffData {
+	VoxelArea a;
+	Decoration *deco;
+	//v3s16 p;
+	//v3s16 size;
+	//s16 height;
+
+	CutoffData(s16 x, s16 y, s16 z, s16 h) {
+		p = v3s16(x, y, z);
+		height = h;
+	}
+};
+#endif
+
+class Decoration {
+public:
+	INodeDefManager *ndef;
+
+	int mapseed;
+	std::vector<content_t> c_place_on;
+	s16 sidelen;
+	float fill_ratio;
+	NoiseParams *np;
+
+	std::set<u8> biomes;
+	//std::list<CutoffData> cutoffs;
+	//JMutex cutoff_mutex;
+
+	Decoration();
+	virtual ~Decoration();
+
+	void placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax);
+	void placeCutoffs(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax);
+
+	virtual void generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, v3s16 p) = 0;
+	virtual int getHeight() = 0;
+	virtual std::string getName() = 0;
+};
+
+class DecoSimple : public Decoration {
+public:
+	std::vector<content_t> c_decos;
+	std::vector<content_t> c_spawnby;
+	s16 deco_height;
+	s16 deco_height_max;
+	s16 nspawnby;
+
+	~DecoSimple() {}
+
+	bool canPlaceDecoration(ManualMapVoxelManipulator *vm, v3s16 p);
+	virtual void generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, v3s16 p);
+	virtual int getHeight();
+	virtual std::string getName();
+};
+
+/*
+class DecoLSystem : public Decoration {
+public:
+	virtual void generate(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax);
+};
+*/
+
+Decoration *createDecoration(DecorationType type);
+
+#endif