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diff --git a/src/mapgen.h b/src/mapgen.h
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+/*
+Minetest-c55
+Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 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 General Public License for more details.
+
+You should have received a copy of the GNU 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 MAPGEN_HEADER
+#define MAPGEN_HEADER
+
+#include "common_irrlicht.h"
+#include "utility.h" // UniqueQueue
+
+struct BlockMakeData;
+class MapBlock;
+class ManualMapVoxelManipulator;
+
+namespace mapgen
+{
+	// Finds precise ground level at any position
+	s16 find_ground_level_from_noise(u64 seed, v2s16 p2d, s16 precision);
+
+	// Find out if block is completely underground
+	bool block_is_underground(u64 seed, v3s16 blockpos);
+
+	// Main map generation routine
+	void make_block(BlockMakeData *data);
+	
+	// Add objects according to block content
+	void add_random_objects(MapBlock *block);
+	
+	/*
+		These are used by FarMesh
+	*/
+	bool get_have_sand(u64 seed, v2s16 p2d);
+	double tree_amount_2d(u64 seed, v2s16 p);
+	
+
+	struct BlockMakeData
+	{
+		bool no_op;
+		ManualMapVoxelManipulator *vmanip;
+		u64 seed;
+		v3s16 blockpos;
+		UniqueQueue<v3s16> transforming_liquid;
+
+		BlockMakeData();
+		~BlockMakeData();
+	};
+
+}; // namespace mapgen
+
+#endif
+