From 8ec3fc35c656544a55f7f8ece9359c9e2b472e8f Mon Sep 17 00:00:00 2001
From: kwolekr <kwolekr@minetest.net>
Date: Sat, 6 Apr 2013 11:19:59 -0400
Subject: Add Mapgen V7, reorganize biomes

---
 src/mapgen_v7.h | 125 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 125 insertions(+)
 create mode 100644 src/mapgen_v7.h

(limited to 'src/mapgen_v7.h')

diff --git a/src/mapgen_v7.h b/src/mapgen_v7.h
new file mode 100644
index 000000000..73fa9be03
--- /dev/null
+++ b/src/mapgen_v7.h
@@ -0,0 +1,125 @@
+/*
+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 MAPGEN_V7_HEADER
+#define MAPGEN_V7_HEADER
+
+#include "mapgen.h"
+
+extern NoiseParams nparams_v7_def_terrain_base;
+extern NoiseParams nparams_v7_def_terrain_alt;
+extern NoiseParams nparams_v7_def_terrain_mod;
+extern NoiseParams nparams_v7_def_terrain_persist;
+extern NoiseParams nparams_v7_def_height_select;
+extern NoiseParams nparams_v7_def_ridge;
+
+struct MapgenV7Params : public MapgenParams {
+	NoiseParams *np_terrain_base;
+	NoiseParams *np_terrain_alt;
+	NoiseParams *np_terrain_mod;
+	NoiseParams *np_terrain_persist;
+	NoiseParams *np_height_select;
+	NoiseParams *np_ridge;
+	
+	MapgenV7Params() {
+		np_terrain_base    = &nparams_v7_def_terrain_base;
+		np_terrain_alt     = &nparams_v7_def_terrain_alt;
+		np_terrain_mod     = &nparams_v7_def_terrain_mod;
+		np_terrain_persist = &nparams_v7_def_terrain_persist;
+		np_height_select   = &nparams_v7_def_height_select;
+		np_ridge           = &nparams_v7_def_ridge;
+	}
+	
+	bool readParams(Settings *settings);
+	void writeParams(Settings *settings);
+};
+
+class MapgenV7 : public Mapgen {
+public:
+	EmergeManager *emerge;
+	BiomeDefManager *bmgr;
+
+	int ystride;
+	v3s16 csize;
+	u32 flags;
+
+	u32 blockseed;
+	v3s16 node_min;
+	v3s16 node_max;
+	v3s16 full_node_min;
+	v3s16 full_node_max;
+	
+	s16 *heightmap;
+	s16 *ridge_heightmap;
+	u8 *biomemap;
+	
+	Noise *noise_terrain_base;
+	Noise *noise_terrain_alt;
+	Noise *noise_terrain_mod;
+	Noise *noise_terrain_persist;
+	Noise *noise_height_select;
+	
+	Noise *noise_ridge;
+	
+	Noise *noise_heat;
+	Noise *noise_humidity;
+	
+	content_t c_stone;
+	content_t c_dirt;
+	content_t c_dirt_with_grass;
+	content_t c_sand;
+	content_t c_water_source;
+	content_t c_lava_source;
+	content_t c_gravel;
+	content_t c_cobble;
+	content_t c_desert_sand;
+	content_t c_desert_stone;
+
+	MapgenV7(int mapgenid, MapgenV7Params *params, EmergeManager *emerge);
+	~MapgenV7();
+	
+	void makeChunk(BlockMakeData *data);
+	int getGroundLevelAtPoint(v2s16 p);
+	Biome *getBiomeAtPoint(v3s16 p);
+
+	float baseTerrainLevelAtPoint(int x, int z);
+	float baseTerrainLevelFromMap(int index);
+	void calculateNoise();
+	int calcHeightMap();
+	
+	void generateTerrain();
+	void carveRidges();
+	//void carveRivers(); //experimental
+	
+	void testBiomes();
+	void addTopNodes();
+	void growGrass();
+};
+
+struct MapgenFactoryV7 : public MapgenFactory {
+	Mapgen *createMapgen(int mgid, MapgenParams *params, EmergeManager *emerge) {
+		return new MapgenV7(mgid, (MapgenV7Params *)params, emerge);
+	};
+	
+	MapgenParams *createMapgenParams() {
+		return new MapgenV7Params();
+	};
+};
+
+#endif
-- 
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