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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_ORE_HEADER
+#define MG_ORE_HEADER
+
+#include "util/string.h"
+#include "mapnode.h"
+
+class NoiseParams;
+class Noise;
+class Mapgen;
+class ManualMapVoxelManipulator;
+
+/////////////////// Ore generation flags
+// Use absolute value of height to determine ore placement
+#define OREFLAG_ABSHEIGHT 0x01
+// Use 3d noise to get density of ore placement, instead of just the position
+#define OREFLAG_DENSITY   0x02 // not yet implemented
+// For claylike ore types, place ore if the number of surrounding
+// nodes isn't the specified node
+#define OREFLAG_NODEISNT  0x04 // not yet implemented
+
+#define ORE_RANGE_ACTUAL 1
+#define ORE_RANGE_MIRROR 2
+
+extern FlagDesc flagdesc_ore[];
+
+enum OreType {
+	ORE_SCATTER,
+	ORE_SHEET,
+	ORE_CLAYLIKE
+};
+
+class Ore {
+public:
+	content_t c_ore;                  // the node to place
+	std::vector<content_t> c_wherein; // the nodes to be placed in
+	u32 clust_scarcity; // ore cluster has a 1-in-clust_scarcity chance of appearing at a node
+	s16 clust_num_ores; // how many ore nodes are in a chunk
+	s16 clust_size;     // how large (in nodes) a chunk of ore is
+	s16 height_min;
+	s16 height_max;
+	u8 ore_param2;		// to set node-specific attributes
+	u32 flags;          // attributes for this ore
+	float nthresh;      // threshhold for noise at which an ore is placed
+	NoiseParams *np;    // noise for distribution of clusters (NULL for uniform scattering)
+	Noise *noise;
+
+	Ore() {
+		c_ore   = CONTENT_IGNORE;
+		np      = NULL;
+		noise   = NULL;
+	}
+
+	virtual ~Ore();
+
+	void placeOre(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax);
+	virtual void generate(ManualMapVoxelManipulator *vm, int seed,
+						u32 blockseed, v3s16 nmin, v3s16 nmax) = 0;
+};
+
+class OreScatter : public Ore {
+	~OreScatter() {}
+	virtual void generate(ManualMapVoxelManipulator *vm, int seed,
+						u32 blockseed, v3s16 nmin, v3s16 nmax);
+};
+
+class OreSheet : public Ore {
+	~OreSheet() {}
+	virtual void generate(ManualMapVoxelManipulator *vm, int seed,
+						u32 blockseed, v3s16 nmin, v3s16 nmax);
+};
+
+Ore *createOre(OreType type);
+
+
+#endif