Move files to subdirectories (#6599)

* Move files around

1 files changed, 483 insertions, 0 deletions

diff --git a/src/mapgen/mg_ore.cpp b/src/mapgen/mg_ore.cpp
new file mode 100644
index 000000000..979135ed4
--- /dev/null
+++ b/src/mapgen/mg_ore.cpp
@@ -0,0 +1,483 @@
+/*
+Minetest
+Copyright (C) 2014-2016 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
+Copyright (C) 2015-2017 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_ore.h"
+#include "mapgen.h"
+#include "noise.h"
+#include "map.h"
+#include "log.h"
+#include "util/numeric.h"
+#include <algorithm>
+
+
+FlagDesc flagdesc_ore[] = {
+	{"absheight",                 OREFLAG_ABSHEIGHT}, // Non-functional
+	{"puff_cliffs",               OREFLAG_PUFF_CLIFFS},
+	{"puff_additive_composition", OREFLAG_PUFF_ADDITIVE},
+	{NULL,                        0}
+};
+
+
+///////////////////////////////////////////////////////////////////////////////
+
+
+OreManager::OreManager(IGameDef *gamedef) :
+	ObjDefManager(gamedef, OBJDEF_ORE)
+{
+}
+
+
+size_t OreManager::placeAllOres(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax)
+{
+	size_t nplaced = 0;
+
+	for (size_t i = 0; i != m_objects.size(); i++) {
+		Ore *ore = (Ore *)m_objects[i];
+		if (!ore)
+			continue;
+
+		nplaced += ore->placeOre(mg, blockseed, nmin, nmax);
+		blockseed++;
+	}
+
+	return nplaced;
+}
+
+
+void OreManager::clear()
+{
+	for (ObjDef *object : m_objects) {
+		Ore *ore = (Ore *) object;
+		delete ore;
+	}
+	m_objects.clear();
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+
+
+Ore::~Ore()
+{
+	delete noise;
+}
+
+
+void Ore::resolveNodeNames()
+{
+	getIdFromNrBacklog(&c_ore, "", CONTENT_AIR);
+	getIdsFromNrBacklog(&c_wherein);
+}
+
+
+size_t Ore::placeOre(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax)
+{
+	if (nmin.Y > y_max || nmax.Y < y_min)
+		return 0;
+
+	int actual_ymin = MYMAX(nmin.Y, y_min);
+	int actual_ymax = MYMIN(nmax.Y, y_max);
+	if (clust_size >= actual_ymax - actual_ymin + 1)
+		return 0;
+
+	nmin.Y = actual_ymin;
+	nmax.Y = actual_ymax;
+	generate(mg->vm, mg->seed, blockseed, nmin, nmax, mg->biomemap);
+
+	return 1;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+
+
+void OreScatter::generate(MMVManip *vm, int mapseed, u32 blockseed,
+	v3s16 nmin, v3s16 nmax, u8 *biomemap)
+{
+	PcgRandom pr(blockseed);
+	MapNode n_ore(c_ore, 0, ore_param2);
+
+	u32 sizex  = (nmax.X - nmin.X + 1);
+	u32 volume = (nmax.X - nmin.X + 1) *
+				 (nmax.Y - nmin.Y + 1) *
+				 (nmax.Z - nmin.Z + 1);
+	u32 csize     = clust_size;
+	u32 cvolume    = csize * csize * csize;
+	u32 nclusters = volume / clust_scarcity;
+
+	for (u32 i = 0; i != nclusters; i++) {
+		int x0 = pr.range(nmin.X, nmax.X - csize + 1);
+		int y0 = pr.range(nmin.Y, nmax.Y - csize + 1);
+		int z0 = pr.range(nmin.Z, nmax.Z - csize + 1);
+
+		if ((flags & OREFLAG_USE_NOISE) &&
+			(NoisePerlin3D(&np, x0, y0, z0, mapseed) < nthresh))
+			continue;
+
+		if (biomemap && !biomes.empty()) {
+			u32 index = sizex * (z0 - nmin.Z) + (x0 - nmin.X);
+			std::unordered_set<u8>::const_iterator it = biomes.find(biomemap[index]);
+			if (it == biomes.end())
+				continue;
+		}
+
+		for (u32 z1 = 0; z1 != csize; z1++)
+		for (u32 y1 = 0; y1 != csize; y1++)
+		for (u32 x1 = 0; x1 != csize; x1++) {
+			if (pr.range(1, cvolume) > clust_num_ores)
+				continue;
+
+			u32 i = vm->m_area.index(x0 + x1, y0 + y1, z0 + z1);
+			if (!CONTAINS(c_wherein, vm->m_data[i].getContent()))
+				continue;
+
+			vm->m_data[i] = n_ore;
+		}
+	}
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+
+
+void OreSheet::generate(MMVManip *vm, int mapseed, u32 blockseed,
+	v3s16 nmin, v3s16 nmax, u8 *biomemap)
+{
+	PcgRandom pr(blockseed + 4234);
+	MapNode n_ore(c_ore, 0, ore_param2);
+
+	u16 max_height = column_height_max;
+	int y_start_min = nmin.Y + max_height;
+	int y_start_max = nmax.Y - max_height;
+
+	int y_start = y_start_min < y_start_max ?
+		pr.range(y_start_min, y_start_max) :
+		(y_start_min + y_start_max) / 2;
+
+	if (!noise) {
+		int sx = nmax.X - nmin.X + 1;
+		int sz = nmax.Z - nmin.Z + 1;
+		noise = new Noise(&np, 0, sx, sz);
+	}
+	noise->seed = mapseed + y_start;
+	noise->perlinMap2D(nmin.X, nmin.Z);
+
+	size_t index = 0;
+	for (int z = nmin.Z; z <= nmax.Z; z++)
+	for (int x = nmin.X; x <= nmax.X; x++, index++) {
+		float noiseval = noise->result[index];
+		if (noiseval < nthresh)
+			continue;
+
+		if (biomemap && !biomes.empty()) {
+			std::unordered_set<u8>::const_iterator it = biomes.find(biomemap[index]);
+			if (it == biomes.end())
+				continue;
+		}
+
+		u16 height = pr.range(column_height_min, column_height_max);
+		int ymidpoint = y_start + noiseval;
+		int y0 = MYMAX(nmin.Y, ymidpoint - height * (1 - column_midpoint_factor));
+		int y1 = MYMIN(nmax.Y, y0 + height - 1);
+
+		for (int y = y0; y <= y1; y++) {
+			u32 i = vm->m_area.index(x, y, z);
+			if (!vm->m_area.contains(i))
+				continue;
+			if (!CONTAINS(c_wherein, vm->m_data[i].getContent()))
+				continue;
+
+			vm->m_data[i] = n_ore;
+		}
+	}
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+
+
+OrePuff::~OrePuff()
+{
+	delete noise_puff_top;
+	delete noise_puff_bottom;
+}
+
+
+void OrePuff::generate(MMVManip *vm, int mapseed, u32 blockseed,
+	v3s16 nmin, v3s16 nmax, u8 *biomemap)
+{
+	PcgRandom pr(blockseed + 4234);
+	MapNode n_ore(c_ore, 0, ore_param2);
+
+	int y_start = pr.range(nmin.Y, nmax.Y);
+
+	if (!noise) {
+		int sx = nmax.X - nmin.X + 1;
+		int sz = nmax.Z - nmin.Z + 1;
+		noise = new Noise(&np, 0, sx, sz);
+		noise_puff_top = new Noise(&np_puff_top, 0, sx, sz);
+		noise_puff_bottom = new Noise(&np_puff_bottom, 0, sx, sz);
+	}
+
+	noise->seed = mapseed + y_start;
+	noise->perlinMap2D(nmin.X, nmin.Z);
+	bool noise_generated = false;
+
+	size_t index = 0;
+	for (int z = nmin.Z; z <= nmax.Z; z++)
+	for (int x = nmin.X; x <= nmax.X; x++, index++) {
+		float noiseval = noise->result[index];
+		if (noiseval < nthresh)
+			continue;
+
+		if (biomemap && !biomes.empty()) {
+			std::unordered_set<u8>::const_iterator it = biomes.find(biomemap[index]);
+			if (it == biomes.end())
+				continue;
+		}
+
+		if (!noise_generated) {
+			noise_generated = true;
+			noise_puff_top->perlinMap2D(nmin.X, nmin.Z);
+			noise_puff_bottom->perlinMap2D(nmin.X, nmin.Z);
+		}
+
+		float ntop    = noise_puff_top->result[index];
+		float nbottom = noise_puff_bottom->result[index];
+
+		if (!(flags & OREFLAG_PUFF_CLIFFS)) {
+			float ndiff = noiseval - nthresh;
+			if (ndiff < 1.0f) {
+				ntop *= ndiff;
+				nbottom *= ndiff;
+			}
+		}
+
+		int ymid = y_start;
+		int y0 = ymid - nbottom;
+		int y1 = ymid + ntop;
+
+		if ((flags & OREFLAG_PUFF_ADDITIVE) && (y0 > y1))
+			SWAP(int, y0, y1);
+
+		for (int y = y0; y <= y1; y++) {
+			u32 i = vm->m_area.index(x, y, z);
+			if (!vm->m_area.contains(i))
+				continue;
+			if (!CONTAINS(c_wherein, vm->m_data[i].getContent()))
+				continue;
+
+			vm->m_data[i] = n_ore;
+		}
+	}
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+
+
+void OreBlob::generate(MMVManip *vm, int mapseed, u32 blockseed,
+	v3s16 nmin, v3s16 nmax, u8 *biomemap)
+{
+	PcgRandom pr(blockseed + 2404);
+	MapNode n_ore(c_ore, 0, ore_param2);
+
+	u32 sizex  = (nmax.X - nmin.X + 1);
+	u32 volume = (nmax.X - nmin.X + 1) *
+				 (nmax.Y - nmin.Y + 1) *
+				 (nmax.Z - nmin.Z + 1);
+	u32 csize  = clust_size;
+	u32 nblobs = volume / clust_scarcity;
+
+	if (!noise)
+		noise = new Noise(&np, mapseed, csize, csize, csize);
+
+	for (u32 i = 0; i != nblobs; i++) {
+		int x0 = pr.range(nmin.X, nmax.X - csize + 1);
+		int y0 = pr.range(nmin.Y, nmax.Y - csize + 1);
+		int z0 = pr.range(nmin.Z, nmax.Z - csize + 1);
+
+		if (biomemap && !biomes.empty()) {
+			u32 bmapidx = sizex * (z0 - nmin.Z) + (x0 - nmin.X);
+			std::unordered_set<u8>::const_iterator it = biomes.find(biomemap[bmapidx]);
+			if (it == biomes.end())
+				continue;
+		}
+
+		bool noise_generated = false;
+		noise->seed = blockseed + i;
+
+		size_t index = 0;
+		for (u32 z1 = 0; z1 != csize; z1++)
+		for (u32 y1 = 0; y1 != csize; y1++)
+		for (u32 x1 = 0; x1 != csize; x1++, index++) {
+			u32 i = vm->m_area.index(x0 + x1, y0 + y1, z0 + z1);
+			if (!CONTAINS(c_wherein, vm->m_data[i].getContent()))
+				continue;
+
+			// Lazily generate noise only if there's a chance of ore being placed
+			// This simple optimization makes calls 6x faster on average
+			if (!noise_generated) {
+				noise_generated = true;
+				noise->perlinMap3D(x0, y0, z0);
+			}
+
+			float noiseval = noise->result[index];
+
+			float xdist = (s32)x1 - (s32)csize / 2;
+			float ydist = (s32)y1 - (s32)csize / 2;
+			float zdist = (s32)z1 - (s32)csize / 2;
+
+			noiseval -= (sqrt(xdist * xdist + ydist * ydist + zdist * zdist) / csize);
+
+			if (noiseval < nthresh)
+				continue;
+
+			vm->m_data[i] = n_ore;
+		}
+	}
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+
+
+OreVein::~OreVein()
+{
+	delete noise2;
+}
+
+
+void OreVein::generate(MMVManip *vm, int mapseed, u32 blockseed,
+	v3s16 nmin, v3s16 nmax, u8 *biomemap)
+{
+	PcgRandom pr(blockseed + 520);
+	MapNode n_ore(c_ore, 0, ore_param2);
+
+	u32 sizex = (nmax.X - nmin.X + 1);
+
+	if (!noise) {
+		int sx = nmax.X - nmin.X + 1;
+		int sy = nmax.Y - nmin.Y + 1;
+		int sz = nmax.Z - nmin.Z + 1;
+		noise  = new Noise(&np, mapseed, sx, sy, sz);
+		noise2 = new Noise(&np, mapseed + 436, sx, sy, sz);
+	}
+	bool noise_generated = false;
+
+	size_t index = 0;
+	for (int z = nmin.Z; z <= nmax.Z; z++)
+	for (int y = nmin.Y; y <= nmax.Y; y++)
+	for (int x = nmin.X; x <= nmax.X; x++, index++) {
+		u32 i = vm->m_area.index(x, y, z);
+		if (!vm->m_area.contains(i))
+			continue;
+		if (!CONTAINS(c_wherein, vm->m_data[i].getContent()))
+			continue;
+
+		if (biomemap && !biomes.empty()) {
+			u32 bmapidx = sizex * (z - nmin.Z) + (x - nmin.X);
+			std::unordered_set<u8>::const_iterator it = biomes.find(biomemap[bmapidx]);
+			if (it == biomes.end())
+				continue;
+		}
+
+		// Same lazy generation optimization as in OreBlob
+		if (!noise_generated) {
+			noise_generated = true;
+			noise->perlinMap3D(nmin.X, nmin.Y, nmin.Z);
+			noise2->perlinMap3D(nmin.X, nmin.Y, nmin.Z);
+		}
+
+		// randval ranges from -1..1
+		float randval   = (float)pr.next() / (pr.RANDOM_RANGE / 2) - 1.f;
+		float noiseval  = contour(noise->result[index]);
+		float noiseval2 = contour(noise2->result[index]);
+		if (noiseval * noiseval2 + randval * random_factor < nthresh)
+			continue;
+
+		vm->m_data[i] = n_ore;
+	}
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+
+
+OreStratum::~OreStratum()
+{
+	delete noise_stratum_thickness;
+}
+
+
+void OreStratum::generate(MMVManip *vm, int mapseed, u32 blockseed,
+	v3s16 nmin, v3s16 nmax, u8 *biomemap)
+{
+	PcgRandom pr(blockseed + 4234);
+	MapNode n_ore(c_ore, 0, ore_param2);
+
+	if (flags & OREFLAG_USE_NOISE) {
+		if (!(noise && noise_stratum_thickness)) {
+			int sx = nmax.X - nmin.X + 1;
+			int sz = nmax.Z - nmin.Z + 1;
+			noise = new Noise(&np, 0, sx, sz);
+			noise_stratum_thickness = new Noise(&np_stratum_thickness, 0, sx, sz);
+		}
+		noise->perlinMap2D(nmin.X, nmin.Z);
+		noise_stratum_thickness->perlinMap2D(nmin.X, nmin.Z);
+	}
+
+	size_t index = 0;
+
+	for (int z = nmin.Z; z <= nmax.Z; z++)
+	for (int x = nmin.X; x <= nmax.X; x++, index++) {
+		if (biomemap && !biomes.empty()) {
+			std::unordered_set<u8>::const_iterator it = biomes.find(biomemap[index]);
+			if (it == biomes.end())
+				continue;
+		}
+
+		int y0;
+		int y1;
+
+		if (flags & OREFLAG_USE_NOISE) {
+			float nmid = noise->result[index];
+			float nhalfthick = noise_stratum_thickness->result[index] / 2.0f;
+			y0 = MYMAX(nmin.Y, nmid - nhalfthick);
+			y1 = MYMIN(nmax.Y, nmid + nhalfthick);
+		} else {
+			y0 = nmin.Y;
+			y1 = nmax.Y;
+		}
+
+		for (int y = y0; y <= y1; y++) {
+			if (pr.range(1, clust_scarcity) != 1)
+				continue;
+
+			u32 i = vm->m_area.index(x, y, z);
+			if (!vm->m_area.contains(i))
+				continue;
+			if (!CONTAINS(c_wherein, vm->m_data[i].getContent()))
+				continue;
+
+			vm->m_data[i] = n_ore;
+		}
+	}
+}