Move files to subdirectories (#6599)

* Move files around

1 files changed, 238 insertions, 0 deletions

diff --git a/src/mapgen/mg_biome.cpp b/src/mapgen/mg_biome.cpp
new file mode 100644
index 000000000..8dbb78e59
--- /dev/null
+++ b/src/mapgen/mg_biome.cpp
@@ -0,0 +1,238 @@
+/*
+Minetest
+Copyright (C) 2014-2016 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
+Copyright (C) 2014-2017 paramat
+
+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.
+*/
+
+#include "mg_biome.h"
+#include "mg_decoration.h"
+#include "emerge.h"
+#include "server.h"
+#include "nodedef.h"
+#include "map.h" //for MMVManip
+#include "util/numeric.h"
+#include "porting.h"
+#include "settings.h"
+
+
+///////////////////////////////////////////////////////////////////////////////
+
+
+BiomeManager::BiomeManager(Server *server) :
+	ObjDefManager(server, OBJDEF_BIOME)
+{
+	m_server = server;
+
+	// Create default biome to be used in case none exist
+	Biome *b = new Biome;
+
+	b->name            = "Default";
+	b->flags           = 0;
+	b->depth_top       = 0;
+	b->depth_filler    = -MAX_MAP_GENERATION_LIMIT;
+	b->depth_water_top = 0;
+	b->depth_riverbed  = 0;
+	b->y_min           = -MAX_MAP_GENERATION_LIMIT;
+	b->y_max           = MAX_MAP_GENERATION_LIMIT;
+	b->heat_point      = 0.0;
+	b->humidity_point  = 0.0;
+
+	b->m_nodenames.emplace_back("mapgen_stone");
+	b->m_nodenames.emplace_back("mapgen_stone");
+	b->m_nodenames.emplace_back("mapgen_stone");
+	b->m_nodenames.emplace_back("mapgen_water_source");
+	b->m_nodenames.emplace_back("mapgen_water_source");
+	b->m_nodenames.emplace_back("mapgen_river_water_source");
+	b->m_nodenames.emplace_back("mapgen_stone");
+	b->m_nodenames.emplace_back("ignore");
+	m_ndef->pendNodeResolve(b);
+
+	add(b);
+}
+
+
+void BiomeManager::clear()
+{
+	EmergeManager *emerge = m_server->getEmergeManager();
+
+	// Remove all dangling references in Decorations
+	DecorationManager *decomgr = emerge->decomgr;
+	for (size_t i = 0; i != decomgr->getNumObjects(); i++) {
+		Decoration *deco = (Decoration *)decomgr->getRaw(i);
+		deco->biomes.clear();
+	}
+
+	// Don't delete the first biome
+	for (size_t i = 1; i < m_objects.size(); i++)
+		delete (Biome *)m_objects[i];
+
+	m_objects.resize(1);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+
+void BiomeParamsOriginal::readParams(const Settings *settings)
+{
+	settings->getNoiseParams("mg_biome_np_heat",           np_heat);
+	settings->getNoiseParams("mg_biome_np_heat_blend",     np_heat_blend);
+	settings->getNoiseParams("mg_biome_np_humidity",       np_humidity);
+	settings->getNoiseParams("mg_biome_np_humidity_blend", np_humidity_blend);
+}
+
+
+void BiomeParamsOriginal::writeParams(Settings *settings) const
+{
+	settings->setNoiseParams("mg_biome_np_heat",           np_heat);
+	settings->setNoiseParams("mg_biome_np_heat_blend",     np_heat_blend);
+	settings->setNoiseParams("mg_biome_np_humidity",       np_humidity);
+	settings->setNoiseParams("mg_biome_np_humidity_blend", np_humidity_blend);
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
+
+BiomeGenOriginal::BiomeGenOriginal(BiomeManager *biomemgr,
+	BiomeParamsOriginal *params, v3s16 chunksize)
+{
+	m_bmgr   = biomemgr;
+	m_params = params;
+	m_csize  = chunksize;
+
+	noise_heat           = new Noise(&params->np_heat,
+									params->seed, m_csize.X, m_csize.Z);
+	noise_humidity       = new Noise(&params->np_humidity,
+									params->seed, m_csize.X, m_csize.Z);
+	noise_heat_blend     = new Noise(&params->np_heat_blend,
+									params->seed, m_csize.X, m_csize.Z);
+	noise_humidity_blend = new Noise(&params->np_humidity_blend,
+									params->seed, m_csize.X, m_csize.Z);
+
+	heatmap  = noise_heat->result;
+	humidmap = noise_humidity->result;
+	biomemap = new biome_t[m_csize.X * m_csize.Z];
+}
+
+BiomeGenOriginal::~BiomeGenOriginal()
+{
+	delete []biomemap;
+
+	delete noise_heat;
+	delete noise_humidity;
+	delete noise_heat_blend;
+	delete noise_humidity_blend;
+}
+
+
+Biome *BiomeGenOriginal::calcBiomeAtPoint(v3s16 pos) const
+{
+	float heat =
+		NoisePerlin2D(&m_params->np_heat,       pos.X, pos.Z, m_params->seed) +
+		NoisePerlin2D(&m_params->np_heat_blend, pos.X, pos.Z, m_params->seed);
+	float humidity =
+		NoisePerlin2D(&m_params->np_humidity,       pos.X, pos.Z, m_params->seed) +
+		NoisePerlin2D(&m_params->np_humidity_blend, pos.X, pos.Z, m_params->seed);
+
+	return calcBiomeFromNoise(heat, humidity, pos.Y);
+}
+
+
+void BiomeGenOriginal::calcBiomeNoise(v3s16 pmin)
+{
+	m_pmin = pmin;
+
+	noise_heat->perlinMap2D(pmin.X, pmin.Z);
+	noise_humidity->perlinMap2D(pmin.X, pmin.Z);
+	noise_heat_blend->perlinMap2D(pmin.X, pmin.Z);
+	noise_humidity_blend->perlinMap2D(pmin.X, pmin.Z);
+
+	for (s32 i = 0; i < m_csize.X * m_csize.Z; i++) {
+		noise_heat->result[i]     += noise_heat_blend->result[i];
+		noise_humidity->result[i] += noise_humidity_blend->result[i];
+	}
+}
+
+
+biome_t *BiomeGenOriginal::getBiomes(s16 *heightmap)
+{
+	for (s32 i = 0; i != m_csize.X * m_csize.Z; i++) {
+		Biome *biome = calcBiomeFromNoise(
+			noise_heat->result[i],
+			noise_humidity->result[i],
+			heightmap[i]);
+
+		biomemap[i] = biome->index;
+	}
+
+	return biomemap;
+}
+
+
+Biome *BiomeGenOriginal::getBiomeAtPoint(v3s16 pos) const
+{
+	return getBiomeAtIndex(
+		(pos.Z - m_pmin.Z) * m_csize.X + (pos.X - m_pmin.X),
+		pos.Y);
+}
+
+
+Biome *BiomeGenOriginal::getBiomeAtIndex(size_t index, s16 y) const
+{
+	return calcBiomeFromNoise(
+		noise_heat->result[index],
+		noise_humidity->result[index],
+		y);
+}
+
+
+Biome *BiomeGenOriginal::calcBiomeFromNoise(float heat, float humidity, s16 y) const
+{
+	Biome *b, *biome_closest = NULL;
+	float dist_min = FLT_MAX;
+
+	for (size_t i = 1; i < m_bmgr->getNumObjects(); i++) {
+		b = (Biome *)m_bmgr->getRaw(i);
+		if (!b || y > b->y_max || y < b->y_min)
+			continue;
+
+		float d_heat     = heat     - b->heat_point;
+		float d_humidity = humidity - b->humidity_point;
+		float dist = (d_heat * d_heat) +
+					 (d_humidity * d_humidity);
+		if (dist < dist_min) {
+			dist_min = dist;
+			biome_closest = b;
+		}
+	}
+
+	return biome_closest ? biome_closest : (Biome *)m_bmgr->getRaw(BIOME_NONE);
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
+
+void Biome::resolveNodeNames()
+{
+	getIdFromNrBacklog(&c_top,         "mapgen_stone",              CONTENT_AIR);
+	getIdFromNrBacklog(&c_filler,      "mapgen_stone",              CONTENT_AIR);
+	getIdFromNrBacklog(&c_stone,       "mapgen_stone",              CONTENT_AIR);
+	getIdFromNrBacklog(&c_water_top,   "mapgen_water_source",       CONTENT_AIR);
+	getIdFromNrBacklog(&c_water,       "mapgen_water_source",       CONTENT_AIR);
+	getIdFromNrBacklog(&c_river_water, "mapgen_river_water_source", CONTENT_AIR);
+	getIdFromNrBacklog(&c_riverbed,    "mapgen_stone",              CONTENT_AIR);
+	getIdFromNrBacklog(&c_dust,        "ignore",                    CONTENT_IGNORE);
+}