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 FlagDesc flagdesc_deco[] = {
29 {"place_center_x", DECO_PLACE_CENTER_X},
30 {"place_center_y", DECO_PLACE_CENTER_Y},
31 {"place_center_z", DECO_PLACE_CENTER_Z},
32 {"force_placement", DECO_FORCE_PLACEMENT},
37 ///////////////////////////////////////////////////////////////////////////////
40 DecorationManager::DecorationManager(IGameDef *gamedef) :
41 ObjDefManager(gamedef, OBJDEF_DECORATION)
46 size_t DecorationManager::placeAllDecos(Mapgen *mg, u32 blockseed,
47 v3s16 nmin, v3s16 nmax)
51 for (size_t i = 0; i != m_objects.size(); i++) {
52 Decoration *deco = (Decoration *)m_objects[i];
56 nplaced += deco->placeDeco(mg, blockseed, nmin, nmax);
64 ///////////////////////////////////////////////////////////////////////////////
67 Decoration::Decoration()
76 Decoration::~Decoration()
81 void Decoration::resolveNodeNames()
83 getIdsFromNrBacklog(&c_place_on);
87 size_t Decoration::placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax)
89 PseudoRandom ps(blockseed + 53);
90 int carea_size = nmax.X - nmin.X + 1;
92 // Divide area into parts
93 // If chunksize is changed it may no longer be divisable by sidelen
94 if (carea_size % sidelen)
97 s16 divlen = carea_size / sidelen;
98 int area = sidelen * sidelen;
100 for (s16 z0 = 0; z0 < divlen; z0++)
101 for (s16 x0 = 0; x0 < divlen; x0++) {
102 v2s16 p2d_center( // Center position of part of division
103 nmin.X + sidelen / 2 + sidelen * x0,
104 nmin.Z + sidelen / 2 + sidelen * z0
106 v2s16 p2d_min( // Minimum edge of part of division
107 nmin.X + sidelen * x0,
108 nmin.Z + sidelen * z0
110 v2s16 p2d_max( // Maximum edge of part of division
111 nmin.X + sidelen + sidelen * x0 - 1,
112 nmin.Z + sidelen + sidelen * z0 - 1
115 // Amount of decorations
116 float nval = (flags & DECO_USE_NOISE) ?
117 NoisePerlin2D(&np, p2d_center.X, p2d_center.Y, mapseed) :
119 u32 deco_count = area * MYMAX(nval, 0.f);
121 for (u32 i = 0; i < deco_count; i++) {
122 s16 x = ps.range(p2d_min.X, p2d_max.X);
123 s16 z = ps.range(p2d_min.Y, p2d_max.Y);
125 int mapindex = carea_size * (z - nmin.Z) + (x - nmin.X);
127 s16 y = mg->heightmap ?
128 mg->heightmap[mapindex] :
129 mg->findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);
131 if (y < nmin.Y || y > nmax.Y ||
132 y < y_min || y > y_max)
135 if (y + getHeight() >= mg->vm->m_area.MaxEdge.Y) {
138 printf("Decoration at (%d %d %d) cut off\n", x, y, z);
140 MutexAutoLock cutofflock(cutoff_mutex);
141 cutoffs.push_back(CutoffData(x, y, z, height));
146 std::set<u8>::iterator iter;
148 if (!biomes.empty()) {
149 iter = biomes.find(mg->biomemap[mapindex]);
150 if (iter == biomes.end())
156 if (generate(mg->vm, &ps, pos))
157 mg->gennotify.addEvent(GENNOTIFY_DECORATION, pos, index);
166 void Decoration::placeCutoffs(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax)
168 PseudoRandom pr(blockseed + 53);
169 std::vector<CutoffData> handled_cutoffs;
171 // Copy over the cutoffs we're interested in so we don't needlessly hold a lock
173 MutexAutoLock cutofflock(cutoff_mutex);
174 for (std::list<CutoffData>::iterator i = cutoffs.begin();
175 i != cutoffs.end(); ++i) {
176 CutoffData cutoff = *i;
178 s16 height = cutoff.height;
179 if (p.X < nmin.X || p.X > nmax.X ||
180 p.Z < nmin.Z || p.Z > nmax.Z)
182 if (p.Y + height < nmin.Y || p.Y > nmax.Y)
185 handled_cutoffs.push_back(cutoff);
189 // Generate the cutoffs
190 for (size_t i = 0; i != handled_cutoffs.size(); i++) {
191 v3s16 p = handled_cutoffs[i].p;
192 s16 height = handled_cutoffs[i].height;
194 if (p.Y + height > nmax.Y) {
195 //printf("Decoration at (%d %d %d) cut off again!\n", p.X, p.Y, p.Z);
196 cuttoffs.push_back(v3s16(p.X, p.Y, p.Z));
199 generate(mg, &pr, nmax.Y, nmin.Y - p.Y, v3s16(p.X, nmin.Y, p.Z));
202 // Remove cutoffs that were handled from the cutoff list
204 MutexAutoLock cutofflock(cutoff_mutex);
205 for (std::list<CutoffData>::iterator i = cutoffs.begin();
206 i != cutoffs.end(); ++i) {
208 for (size_t j = 0; j != handled_cutoffs.size(); j++) {
209 CutoffData coff = *i;
210 if (coff.p == handled_cutoffs[j].p)
211 i = cutoffs.erase(i);
219 ///////////////////////////////////////////////////////////////////////////////
222 void DecoSimple::resolveNodeNames()
224 Decoration::resolveNodeNames();
225 getIdsFromNrBacklog(&c_decos);
226 getIdsFromNrBacklog(&c_spawnby);
230 bool DecoSimple::canPlaceDecoration(MMVManip *vm, v3s16 p)
232 // Don't bother if there aren't any decorations to place
233 if (c_decos.size() == 0)
236 u32 vi = vm->m_area.index(p);
238 // Check if the decoration can be placed on this node
239 if (!CONTAINS(c_place_on, vm->m_data[vi].getContent()))
242 // Don't continue if there are no spawnby constraints
267 // Check a Moore neighborhood if there are enough spawnby nodes
268 for (size_t i = 0; i != ARRLEN(dirs); i++) {
269 u32 index = vm->m_area.index(p + dirs[i]);
270 if (!vm->m_area.contains(index))
273 if (CONTAINS(c_spawnby, vm->m_data[index].getContent()))
277 if (nneighs < nspawnby)
284 size_t DecoSimple::generate(MMVManip *vm, PseudoRandom *pr, v3s16 p)
286 if (!canPlaceDecoration(vm, p))
289 content_t c_place = c_decos[pr->range(0, c_decos.size() - 1)];
291 s16 height = (deco_height_max > 0) ?
292 pr->range(deco_height, deco_height_max) : deco_height;
294 v3s16 em = vm->m_area.getExtent();
295 u32 vi = vm->m_area.index(p);
296 for (int i = 0; i < height; i++) {
297 vm->m_area.add_y(em, vi, 1);
299 content_t c = vm->m_data[vi].getContent();
300 if (c != CONTENT_AIR && c != CONTENT_IGNORE)
303 vm->m_data[vi] = MapNode(c_place);
310 int DecoSimple::getHeight()
312 return (deco_height_max > 0) ? deco_height_max : deco_height;
316 ///////////////////////////////////////////////////////////////////////////////
319 DecoSchematic::DecoSchematic()
325 size_t DecoSchematic::generate(MMVManip *vm, PseudoRandom *pr, v3s16 p)
327 // Schematic could have been unloaded but not the decoration
328 // In this case generate() does nothing (but doesn't *fail*)
329 if (schematic == NULL)
332 u32 vi = vm->m_area.index(p);
333 content_t c = vm->m_data[vi].getContent();
334 if (!CONTAINS(c_place_on, c))
337 if (flags & DECO_PLACE_CENTER_X)
338 p.X -= (schematic->size.X - 1) / 2;
339 if (flags & DECO_PLACE_CENTER_Y)
340 p.Y -= (schematic->size.Y - 1) / 2;
341 if (flags & DECO_PLACE_CENTER_Z)
342 p.Z -= (schematic->size.Z - 1) / 2;
344 Rotation rot = (rotation == ROTATE_RAND) ?
345 (Rotation)pr->range(ROTATE_0, ROTATE_270) : rotation;
347 bool force_placement = (flags & DECO_FORCE_PLACEMENT);
349 schematic->blitToVManip(p, vm, rot, force_placement);
355 int DecoSchematic::getHeight()
357 return schematic->size.Y;