3 Copyright (C) 2010-2014 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 #include "mg_decoration.h"
21 #include "mg_schematic.h"
26 #include "util/numeric.h"
28 const char *DecorationManager::ELEMENT_TITLE = "decoration";
30 FlagDesc flagdesc_deco_schematic[] = {
31 {"place_center_x", DECO_PLACE_CENTER_X},
32 {"place_center_y", DECO_PLACE_CENTER_Y},
33 {"place_center_z", DECO_PLACE_CENTER_Z},
38 ///////////////////////////////////////////////////////////////////////////////
41 size_t DecorationManager::placeAllDecos(Mapgen *mg, u32 seed, v3s16 nmin, v3s16 nmax)
45 for (size_t i = 0; i != m_elements.size(); i++) {
46 Decoration *deco = (Decoration *)m_elements[i];
50 nplaced += deco->placeDeco(mg, seed, nmin, nmax);
58 ///////////////////////////////////////////////////////////////////////////////
61 Decoration::Decoration()
70 Decoration::~Decoration()
76 size_t Decoration::placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax)
78 PseudoRandom ps(blockseed + 53);
79 int carea_size = nmax.X - nmin.X + 1;
81 // Divide area into parts
82 if (carea_size % sidelen) {
83 errorstream << "Decoration::placeDeco: chunk size is not divisible by "
84 "sidelen; setting sidelen to " << carea_size << std::endl;
88 s16 divlen = carea_size / sidelen;
89 int area = sidelen * sidelen;
91 for (s16 z0 = 0; z0 < divlen; z0++)
92 for (s16 x0 = 0; x0 < divlen; x0++) {
93 v2s16 p2d_center( // Center position of part of division
94 nmin.X + sidelen / 2 + sidelen * x0,
95 nmin.Z + sidelen / 2 + sidelen * z0
97 v2s16 p2d_min( // Minimum edge of part of division
98 nmin.X + sidelen * x0,
101 v2s16 p2d_max( // Maximum edge of part of division
102 nmin.X + sidelen + sidelen * x0 - 1,
103 nmin.Z + sidelen + sidelen * z0 - 1
106 // Amount of decorations
108 NoisePerlin2D(np, p2d_center.X, p2d_center.Y, mapseed) :
110 u32 deco_count = area * MYMAX(nval, 0.f);
112 for (u32 i = 0; i < deco_count; i++) {
113 s16 x = ps.range(p2d_min.X, p2d_max.X);
114 s16 z = ps.range(p2d_min.Y, p2d_max.Y);
116 int mapindex = carea_size * (z - nmin.Z) + (x - nmin.X);
118 s16 y = mg->heightmap ?
119 mg->heightmap[mapindex] :
120 mg->findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);
122 if (y < nmin.Y || y > nmax.Y)
125 int height = getHeight();
126 int max_y = nmax.Y;// + MAP_BLOCKSIZE - 1;
127 if (y + 1 + height > max_y) {
130 printf("Decoration at (%d %d %d) cut off\n", x, y, z);
132 JMutexAutoLock cutofflock(cutoff_mutex);
133 cutoffs.push_back(CutoffData(x, y, z, height));
138 std::set<u8>::iterator iter;
141 iter = biomes.find(mg->biomemap[mapindex]);
142 if (iter == biomes.end())
148 if (generate(mg, &ps, max_y, pos))
149 mg->gennotify.addEvent(GENNOTIFY_DECORATION, pos, id);
158 void Decoration::placeCutoffs(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax)
160 PseudoRandom pr(blockseed + 53);
161 std::vector<CutoffData> handled_cutoffs;
163 // Copy over the cutoffs we're interested in so we don't needlessly hold a lock
165 JMutexAutoLock cutofflock(cutoff_mutex);
166 for (std::list<CutoffData>::iterator i = cutoffs.begin();
167 i != cutoffs.end(); ++i) {
168 CutoffData cutoff = *i;
170 s16 height = cutoff.height;
171 if (p.X < nmin.X || p.X > nmax.X ||
172 p.Z < nmin.Z || p.Z > nmax.Z)
174 if (p.Y + height < nmin.Y || p.Y > nmax.Y)
177 handled_cutoffs.push_back(cutoff);
181 // Generate the cutoffs
182 for (size_t i = 0; i != handled_cutoffs.size(); i++) {
183 v3s16 p = handled_cutoffs[i].p;
184 s16 height = handled_cutoffs[i].height;
186 if (p.Y + height > nmax.Y) {
187 //printf("Decoration at (%d %d %d) cut off again!\n", p.X, p.Y, p.Z);
188 cuttoffs.push_back(v3s16(p.X, p.Y, p.Z));
191 generate(mg, &pr, nmax.Y, nmin.Y - p.Y, v3s16(p.X, nmin.Y, p.Z));
194 // Remove cutoffs that were handled from the cutoff list
196 JMutexAutoLock cutofflock(cutoff_mutex);
197 for (std::list<CutoffData>::iterator i = cutoffs.begin();
198 i != cutoffs.end(); ++i) {
200 for (size_t j = 0; j != handled_cutoffs.size(); j++) {
201 CutoffData coff = *i;
202 if (coff.p == handled_cutoffs[j].p)
203 i = cutoffs.erase(i);
211 ///////////////////////////////////////////////////////////////////////////////
214 bool DecoSimple::canPlaceDecoration(ManualMapVoxelManipulator *vm, v3s16 p)
216 // Don't bother if there aren't any decorations to place
217 if (c_decos.size() == 0)
220 u32 vi = vm->m_area.index(p);
222 // Check if the decoration can be placed on this node
223 if (!CONTAINS(c_place_on, vm->m_data[vi].getContent()))
226 // Don't continue if there are no spawnby constraints
242 // Check a Moore neighborhood if there are enough spawnby nodes
243 for (size_t i = 0; i != ARRLEN(dirs); i++) {
244 u32 index = vm->m_area.index(p + dirs[i]);
245 if (!vm->m_area.contains(index))
248 if (CONTAINS(c_spawnby, vm->m_data[index].getContent()))
252 if (nneighs < nspawnby)
259 size_t DecoSimple::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, v3s16 p)
261 ManualMapVoxelManipulator *vm = mg->vm;
263 if (!canPlaceDecoration(vm, p))
266 content_t c_place = c_decos[pr->range(0, c_decos.size() - 1)];
268 s16 height = (deco_height_max > 0) ?
269 pr->range(deco_height, deco_height_max) : deco_height;
271 height = MYMIN(height, max_y - p.Y);
273 v3s16 em = vm->m_area.getExtent();
274 u32 vi = vm->m_area.index(p);
275 for (int i = 0; i < height; i++) {
276 vm->m_area.add_y(em, vi, 1);
278 content_t c = vm->m_data[vi].getContent();
279 if (c != CONTENT_AIR && c != CONTENT_IGNORE)
282 vm->m_data[vi] = MapNode(c_place);
289 int DecoSimple::getHeight()
291 return (deco_height_max > 0) ? deco_height_max : deco_height;
295 ///////////////////////////////////////////////////////////////////////////////
298 size_t DecoSchematic::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, v3s16 p)
300 ManualMapVoxelManipulator *vm = mg->vm;
302 if (flags & DECO_PLACE_CENTER_X)
303 p.X -= (schematic->size.X + 1) / 2;
304 if (flags & DECO_PLACE_CENTER_Y)
305 p.Y -= (schematic->size.Y + 1) / 2;
306 if (flags & DECO_PLACE_CENTER_Z)
307 p.Z -= (schematic->size.Z + 1) / 2;
309 u32 vi = vm->m_area.index(p);
310 content_t c = vm->m_data[vi].getContent();
311 if (!CONTAINS(c_place_on, c))
314 Rotation rot = (rotation == ROTATE_RAND) ?
315 (Rotation)pr->range(ROTATE_0, ROTATE_270) : rotation;
317 schematic->blitToVManip(p, vm, rot, false, mg->ndef);
323 int DecoSchematic::getHeight()
325 return schematic->size.Y;