Move files to subdirectories (#6599)

* Move files around

src/mapgen/mapgen_flat.cpp

@@ -0,0 +1,274 @@
+/*
+Minetest
+Copyright (C) 2015-2017 paramat
+Copyright (C) 2015-2016 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.
+*/
+
+
+#include "mapgen.h"
+#include "voxel.h"
+#include "noise.h"
+#include "mapblock.h"
+#include "mapnode.h"
+#include "map.h"
+#include "content_sao.h"
+#include "nodedef.h"
+#include "voxelalgorithms.h"
+//#include "profiler.h" // For TimeTaker
+#include "settings.h" // For g_settings
+#include "emerge.h"
+#include "dungeongen.h"
+#include "cavegen.h"
+#include "mg_biome.h"
+#include "mg_ore.h"
+#include "mg_decoration.h"
+#include "mapgen_flat.h"
+
+
+FlagDesc flagdesc_mapgen_flat[] = {
+	{"lakes", MGFLAT_LAKES},
+	{"hills", MGFLAT_HILLS},
+	{NULL,    0}
+};
+
+///////////////////////////////////////////////////////////////////////////////////////
+
+
+MapgenFlat::MapgenFlat(int mapgenid, MapgenFlatParams *params, EmergeManager *emerge)
+	: MapgenBasic(mapgenid, params, emerge)
+{
+	spflags          = params->spflags;
+	ground_level     = params->ground_level;
+	large_cave_depth = params->large_cave_depth;
+	lava_depth       = params->lava_depth;
+	cave_width       = params->cave_width;
+	lake_threshold   = params->lake_threshold;
+	lake_steepness   = params->lake_steepness;
+	hill_threshold   = params->hill_threshold;
+	hill_steepness   = params->hill_steepness;
+
+	// 2D noise
+	noise_filler_depth = new Noise(&params->np_filler_depth, seed, csize.X, csize.Z);
+
+	if ((spflags & MGFLAT_LAKES) || (spflags & MGFLAT_HILLS))
+		noise_terrain = new Noise(&params->np_terrain, seed, csize.X, csize.Z);
+	// 3D noise
+	MapgenBasic::np_cave1 = params->np_cave1;
+	MapgenBasic::np_cave2 = params->np_cave2;
+}
+
+
+MapgenFlat::~MapgenFlat()
+{
+	delete noise_filler_depth;
+
+	if ((spflags & MGFLAT_LAKES) || (spflags & MGFLAT_HILLS))
+		delete noise_terrain;
+}
+
+
+MapgenFlatParams::MapgenFlatParams():
+	np_terrain      (0, 1,   v3f(600, 600, 600), 7244,  5, 0.6, 2.0),
+	np_filler_depth (0, 1.2, v3f(150, 150, 150), 261,   3, 0.7, 2.0),
+	np_cave1        (0, 12,  v3f(61,  61,  61),  52534, 3, 0.5, 2.0),
+	np_cave2        (0, 12,  v3f(67,  67,  67),  10325, 3, 0.5, 2.0)
+{
+}
+
+
+void MapgenFlatParams::readParams(const Settings *settings)
+{
+	settings->getFlagStrNoEx("mgflat_spflags",      spflags, flagdesc_mapgen_flat);
+	settings->getS16NoEx("mgflat_ground_level",     ground_level);
+	settings->getS16NoEx("mgflat_large_cave_depth", large_cave_depth);
+	settings->getS16NoEx("mgflat_lava_depth",       lava_depth);
+	settings->getFloatNoEx("mgflat_cave_width",     cave_width);
+	settings->getFloatNoEx("mgflat_lake_threshold", lake_threshold);
+	settings->getFloatNoEx("mgflat_lake_steepness", lake_steepness);
+	settings->getFloatNoEx("mgflat_hill_threshold", hill_threshold);
+	settings->getFloatNoEx("mgflat_hill_steepness", hill_steepness);
+
+	settings->getNoiseParams("mgflat_np_terrain",      np_terrain);
+	settings->getNoiseParams("mgflat_np_filler_depth", np_filler_depth);
+	settings->getNoiseParams("mgflat_np_cave1",        np_cave1);
+	settings->getNoiseParams("mgflat_np_cave2",        np_cave2);
+}
+
+
+void MapgenFlatParams::writeParams(Settings *settings) const
+{
+	settings->setFlagStr("mgflat_spflags",      spflags, flagdesc_mapgen_flat, U32_MAX);
+	settings->setS16("mgflat_ground_level",     ground_level);
+	settings->setS16("mgflat_large_cave_depth", large_cave_depth);
+	settings->setS16("mgflat_lava_depth",       lava_depth);
+	settings->setFloat("mgflat_cave_width",     cave_width);
+	settings->setFloat("mgflat_lake_threshold", lake_threshold);
+	settings->setFloat("mgflat_lake_steepness", lake_steepness);
+	settings->setFloat("mgflat_hill_threshold", hill_threshold);
+	settings->setFloat("mgflat_hill_steepness", hill_steepness);
+
+	settings->setNoiseParams("mgflat_np_terrain",      np_terrain);
+	settings->setNoiseParams("mgflat_np_filler_depth", np_filler_depth);
+	settings->setNoiseParams("mgflat_np_cave1",        np_cave1);
+	settings->setNoiseParams("mgflat_np_cave2",        np_cave2);
+}
+
+
+/////////////////////////////////////////////////////////////////
+
+
+int MapgenFlat::getSpawnLevelAtPoint(v2s16 p)
+{
+	s16 level_at_point = ground_level;
+	float n_terrain = 0.0f;
+	if ((spflags & MGFLAT_LAKES) || (spflags & MGFLAT_HILLS))
+		n_terrain = NoisePerlin2D(&noise_terrain->np, p.X, p.Y, seed);
+
+	if ((spflags & MGFLAT_LAKES) && n_terrain < lake_threshold) {
+		level_at_point = ground_level -
+			(lake_threshold - n_terrain) * lake_steepness;
+	} else if ((spflags & MGFLAT_HILLS) && n_terrain > hill_threshold) {
+		level_at_point = ground_level +
+			(n_terrain - hill_threshold) * hill_steepness;
+	}
+
+	if (ground_level < water_level)  // Ocean world, allow spawn in water
+		return MYMAX(level_at_point, water_level);
+
+	if (level_at_point > water_level)
+		return level_at_point;  // Spawn on land
+
+	return MAX_MAP_GENERATION_LIMIT;  // Unsuitable spawn point
+}
+
+
+void MapgenFlat::makeChunk(BlockMakeData *data)
+{
+	// Pre-conditions
+	assert(data->vmanip);
+	assert(data->nodedef);
+	assert(data->blockpos_requested.X >= data->blockpos_min.X &&
+		data->blockpos_requested.Y >= data->blockpos_min.Y &&
+		data->blockpos_requested.Z >= data->blockpos_min.Z);
+	assert(data->blockpos_requested.X <= data->blockpos_max.X &&
+		data->blockpos_requested.Y <= data->blockpos_max.Y &&
+		data->blockpos_requested.Z <= data->blockpos_max.Z);
+
+	this->generating = true;
+	this->vm   = data->vmanip;
+	this->ndef = data->nodedef;
+	//TimeTaker t("makeChunk");
+
+	v3s16 blockpos_min = data->blockpos_min;
+	v3s16 blockpos_max = data->blockpos_max;
+	node_min = blockpos_min * MAP_BLOCKSIZE;
+	node_max = (blockpos_max + v3s16(1, 1, 1)) * MAP_BLOCKSIZE - v3s16(1, 1, 1);
+	full_node_min = (blockpos_min - 1) * MAP_BLOCKSIZE;
+	full_node_max = (blockpos_max + 2) * MAP_BLOCKSIZE - v3s16(1, 1, 1);
+
+	blockseed = getBlockSeed2(full_node_min, seed);
+
+	// Generate base terrain, mountains, and ridges with initial heightmaps
+	s16 stone_surface_max_y = generateTerrain();
+
+	// Create heightmap
+	updateHeightmap(node_min, node_max);
+
+	// Init biome generator, place biome-specific nodes, and build biomemap
+	biomegen->calcBiomeNoise(node_min);
+
+	MgStoneType mgstone_type;
+	content_t biome_stone;
+	generateBiomes(&mgstone_type, &biome_stone);
+
+	if (flags & MG_CAVES)
+		generateCaves(stone_surface_max_y, large_cave_depth);
+
+	if (flags & MG_DUNGEONS)
+		generateDungeons(stone_surface_max_y, mgstone_type, biome_stone);
+
+	// Generate the registered decorations
+	if (flags & MG_DECORATIONS)
+		m_emerge->decomgr->placeAllDecos(this, blockseed, node_min, node_max);
+
+	// Generate the registered ores
+	m_emerge->oremgr->placeAllOres(this, blockseed, node_min, node_max);
+
+	// Sprinkle some dust on top after everything else was generated
+	dustTopNodes();
+
+	//printf("makeChunk: %dms\n", t.stop());
+
+	updateLiquid(&data->transforming_liquid, full_node_min, full_node_max);
+
+	if (flags & MG_LIGHT)
+		calcLighting(node_min - v3s16(0, 1, 0), node_max + v3s16(0, 1, 0),
+			full_node_min, full_node_max);
+
+	//setLighting(node_min - v3s16(1, 0, 1) * MAP_BLOCKSIZE,
+	//			node_max + v3s16(1, 0, 1) * MAP_BLOCKSIZE, 0xFF);
+
+	this->generating = false;
+}
+
+
+s16 MapgenFlat::generateTerrain()
+{
+	MapNode n_air(CONTENT_AIR);
+	MapNode n_stone(c_stone);
+	MapNode n_water(c_water_source);
+
+	const v3s16 &em = vm->m_area.getExtent();
+	s16 stone_surface_max_y = -MAX_MAP_GENERATION_LIMIT;
+	u32 ni2d = 0;
+
+	bool use_noise = (spflags & MGFLAT_LAKES) || (spflags & MGFLAT_HILLS);
+	if (use_noise)
+		noise_terrain->perlinMap2D(node_min.X, node_min.Z);
+
+	for (s16 z = node_min.Z; z <= node_max.Z; z++)
+	for (s16 x = node_min.X; x <= node_max.X; x++, ni2d++) {
+		s16 stone_level = ground_level;
+		float n_terrain = use_noise ? noise_terrain->result[ni2d] : 0.0f;
+
+		if ((spflags & MGFLAT_LAKES) && n_terrain < lake_threshold) {
+			s16 depress = (lake_threshold - n_terrain) * lake_steepness;
+			stone_level = ground_level - depress;
+		} else if ((spflags & MGFLAT_HILLS) && n_terrain > hill_threshold) {
+			s16 rise = (n_terrain - hill_threshold) * hill_steepness;
+		 	stone_level = ground_level + rise;
+		}
+
+		u32 vi = vm->m_area.index(x, node_min.Y - 1, z);
+		for (s16 y = node_min.Y - 1; y <= node_max.Y + 1; y++) {
+			if (vm->m_data[vi].getContent() == CONTENT_IGNORE) {
+				if (y <= stone_level) {
+					vm->m_data[vi] = n_stone;
+					if (y > stone_surface_max_y)
+						stone_surface_max_y = y;
+				} else if (y <= water_level) {
+					vm->m_data[vi] = n_water;
+				} else {
+					vm->m_data[vi] = n_air;
+				}
+			}
+			vm->m_area.add_y(em, vi, 1);
+		}
+	}
+
+	return stone_surface_max_y;
+}