]> git.lizzy.rs Git - minetest.git/blobdiff - src/mapgen.cpp
Add capability to read table flag fields from Lua API
[minetest.git] / src / mapgen.cpp
index 49ac827e1d171de7804bf97717dd5f52def0b3ca..95a2f4029e326133735af3ebb302edac50a163b6 100644 (file)
@@ -35,15 +35,18 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "treegen.h"
 #include "mapgen_v6.h"
 #include "mapgen_v7.h"
+#include "serialization.h"
+#include "util/serialize.h"
+#include "filesys.h"
+
 
 FlagDesc flagdesc_mapgen[] = {
-       {"trees",          MG_TREES},
-       {"caves",          MG_CAVES},
-       {"dungeons",       MG_DUNGEONS},
-       {"v6_jungles",     MGV6_JUNGLES},
-       {"v6_biome_blend", MGV6_BIOME_BLEND},
-       {"flat",           MG_FLAT},
-       {NULL,             0}
+       {"trees",    MG_TREES},
+       {"caves",    MG_CAVES},
+       {"dungeons", MG_DUNGEONS},
+       {"flat",     MG_FLAT},
+       {"light",    MG_LIGHT},
+       {NULL,       0}
 };
 
 FlagDesc flagdesc_ore[] = {
@@ -53,6 +56,22 @@ FlagDesc flagdesc_ore[] = {
        {NULL,                   0}
 };
 
+FlagDesc flagdesc_deco_schematic[] = {
+       {"place_center_x", DECO_PLACE_CENTER_X},
+       {"place_center_y", DECO_PLACE_CENTER_Y},
+       {"place_center_z", DECO_PLACE_CENTER_Z},
+       {NULL,             0}
+};
+
+FlagDesc flagdesc_gennotify[] = {
+       {"dungeon",          1 << GENNOTIFY_DUNGEON},
+       {"temple",           1 << GENNOTIFY_TEMPLE},
+       {"cave_begin",       1 << GENNOTIFY_CAVE_BEGIN},
+       {"cave_end",         1 << GENNOTIFY_CAVE_END},
+       {"large_cave_begin", 1 << GENNOTIFY_LARGECAVE_BEGIN},
+       {"large_cave_end",   1 << GENNOTIFY_LARGECAVE_END},
+       {NULL,               0}
+};
 
 ///////////////////////////////////////////////////////////////////////////////
 
@@ -83,18 +102,17 @@ void Ore::resolveNodeNames(INodeDefManager *ndef) {
                if (ore == CONTENT_IGNORE) {
                        errorstream << "Ore::resolveNodeNames: ore node '"
                                << ore_name << "' not defined";
-                       ore     = CONTENT_AIR;
-                       wherein = CONTENT_AIR;
+                       ore = CONTENT_AIR;
+                       wherein.push_back(CONTENT_AIR);
+                       return;
                }
        }
 
-       if (wherein == CONTENT_IGNORE) {
-               wherein = ndef->getId(wherein_name);
-               if (wherein == CONTENT_IGNORE) {
-                       errorstream << "Ore::resolveNodeNames: wherein node '"
-                               << wherein_name << "' not defined";
-                       ore     = CONTENT_AIR;
-                       wherein = CONTENT_AIR;
+       for (size_t i=0; i != wherein_names.size(); i++) {
+               std::string name = wherein_names[i];
+               content_t c = ndef->getId(name);
+               if (c != CONTENT_IGNORE) {
+                       wherein.push_back(c);
                }
        }
 }
@@ -109,8 +127,6 @@ void Ore::placeOre(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
        if (!in_range)
                return;
 
-       resolveNodeNames(mg->ndef);
-
        int ymin, ymax;
        if (in_range & ORE_RANGE_MIRROR) {
                ymin = MYMAX(nmin.Y, -height_max);
@@ -144,7 +160,7 @@ void OreScatter::generate(ManualMapVoxelManipulator *vm, int seed,
                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 (np && (NoisePerlin3D(np, x0, y0, z0, seed) < nthresh))
                        continue;
 
@@ -155,8 +171,9 @@ void OreScatter::generate(ManualMapVoxelManipulator *vm, int seed,
                                continue;
 
                        u32 i = vm->m_area.index(x0 + x1, y0 + y1, z0 + z1);
-                       if (vm->m_data[i].getContent() == wherein)
-                               vm->m_data[i] = n_ore;
+                       for (size_t ii = 0; ii < wherein.size(); ii++)
+                               if (vm->m_data[i].getContent() == wherein[ii])
+                                       vm->m_data[i] = n_ore;
                }
        }
 }
@@ -193,19 +210,23 @@ void OreSheet::generate(ManualMapVoxelManipulator *vm, int seed,
                        if (!vm->m_area.contains(i))
                                continue;
 
-                       if (vm->m_data[i].getContent() == wherein)
-                               vm->m_data[i] = n_ore;
+                       for (size_t ii = 0; ii < wherein.size(); ii++)
+                               if (vm->m_data[i].getContent() == wherein[ii])
+                                       vm->m_data[i] = n_ore;
                }
        }
 }
 
 
+///////////////////////////////////////////////////////////////////////////////
+
+
 Decoration *createDecoration(DecorationType type) {
        switch (type) {
                case DECO_SIMPLE:
                        return new DecoSimple;
-               //case DECO_SCHEMATIC:
-               //      return new DecoSchematic;
+               case DECO_SCHEMATIC:
+                       return new DecoSchematic;
                //case DECO_LSYSTEM:
                //      return new DecoLSystem;
                default:
@@ -214,26 +235,40 @@ Decoration *createDecoration(DecorationType type) {
 }
 
 
+Decoration::Decoration() {
+       mapseed    = 0;
+       np         = NULL;
+       fill_ratio = 0;
+       sidelen    = 1;
+}
+
+
 Decoration::~Decoration() {
        delete np;
 }
 
 
 void Decoration::resolveNodeNames(INodeDefManager *ndef) {
+       this->ndef = ndef;
+
        if (c_place_on == CONTENT_IGNORE)
                c_place_on = ndef->getId(place_on_name);
 }
 
 
 void Decoration::placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
-       resolveNodeNames(mg->ndef);
-
        PseudoRandom ps(blockseed + 53);
        int carea_size = nmax.X - nmin.X + 1;
 
        // Divide area into parts
-       s16 sidelen = carea_size / divlen;
-       float area = sidelen * sidelen;
+       if (carea_size % sidelen) {
+               errorstream << "Decoration::placeDeco: chunk size is not divisible by "
+                       "sidelen; setting sidelen to " << carea_size << std::endl;
+               sidelen = carea_size;
+       }
+
+       s16 divlen = carea_size / sidelen;
+       int area = sidelen * sidelen;
 
        for (s16 z0 = 0; z0 < divlen; z0++)
        for (s16 x0 = 0; x0 < divlen; x0++) {
@@ -261,16 +296,16 @@ void Decoration::placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
                        s16 z = ps.range(p2d_min.Y, p2d_max.Y);
 
                        int mapindex = carea_size * (z - nmin.Z) + (x - nmin.X);
-                       
-                       s16 y = mg->heightmap ? 
+
+                       s16 y = mg->heightmap ?
                                        mg->heightmap[mapindex] :
                                        mg->findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);
-                                       
+
                        if (y < nmin.Y || y > nmax.Y)
                                continue;
 
                        int height = getHeight();
-                       int max_y = nmax.Y + MAP_BLOCKSIZE;
+                       int max_y = nmax.Y;// + MAP_BLOCKSIZE - 1;
                        if (y + 1 + height > max_y) {
                                continue;
 #if 0
@@ -283,7 +318,7 @@ void Decoration::placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
 
                        if (mg->biomemap) {
                                std::set<u8>::iterator iter;
-                               
+
                                if (biomes.size()) {
                                        iter = biomes.find(mg->biomemap[mapindex]);
                                        if (iter == biomes.end())
@@ -291,7 +326,7 @@ void Decoration::placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
                                }
                        }
 
-                       generate(mg, &ps, max_y, 0, v3s16(x, y, z));
+                       generate(mg, &ps, max_y, v3s16(x, y, z));
                }
        }
 }
@@ -301,7 +336,7 @@ void Decoration::placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
 void Decoration::placeCutoffs(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
        PseudoRandom pr(blockseed + 53);
        std::vector<CutoffData> handled_cutoffs;
-       
+
        // Copy over the cutoffs we're interested in so we don't needlessly hold a lock
        {
                JMutexAutoLock cutofflock(cutoff_mutex);
@@ -315,49 +350,52 @@ void Decoration::placeCutoffs(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax)
                                continue;
                        if (p.Y + height < nmin.Y || p.Y > nmax.Y)
                                continue;
-                       
+
                        handled_cutoffs.push_back(cutoff);
                }
        }
-       
+
        // Generate the cutoffs
        for (size_t i = 0; i != handled_cutoffs.size(); i++) {
                v3s16 p    = handled_cutoffs[i].p;
                s16 height = handled_cutoffs[i].height;
-               
+
                if (p.Y + height > nmax.Y) {
                        //printf("Decoration at (%d %d %d) cut off again!\n", p.X, p.Y, p.Z);
                        cuttoffs.push_back(v3s16(p.X, p.Y, p.Z));
                }
-               
+
                generate(mg, &pr, nmax.Y, nmin.Y - p.Y, v3s16(p.X, nmin.Y, p.Z));
        }
-       
+
        // Remove cutoffs that were handled from the cutoff list
        {
                JMutexAutoLock cutofflock(cutoff_mutex);
                for (std::list<CutoffData>::iterator i = cutoffs.begin();
                        i != cutoffs.end(); ++i) {
-                       
+
                        for (size_t j = 0; j != handled_cutoffs.size(); j++) {
                                CutoffData coff = *i;
                                if (coff.p == handled_cutoffs[j].p)
                                        i = cutoffs.erase(i);
                        }
                }
-       }       
+       }
 }
 #endif
 
 
+///////////////////////////////////////////////////////////////////////////////
+
+
 void DecoSimple::resolveNodeNames(INodeDefManager *ndef) {
        Decoration::resolveNodeNames(ndef);
-       
-       if (c_deco == CONTENT_IGNORE) {
+
+       if (c_deco == CONTENT_IGNORE && !decolist_names.size()) {
                c_deco = ndef->getId(deco_name);
                if (c_deco == CONTENT_IGNORE) {
                        errorstream << "DecoSimple::resolveNodeNames: decoration node '"
-                               << deco_name << "' not defined";
+                               << deco_name << "' not defined" << std::endl;
                        c_deco = CONTENT_AIR;
                }
        }
@@ -365,20 +403,20 @@ void DecoSimple::resolveNodeNames(INodeDefManager *ndef) {
                c_spawnby = ndef->getId(spawnby_name);
                if (c_spawnby == CONTENT_IGNORE) {
                        errorstream << "DecoSimple::resolveNodeNames: spawnby node '"
-                               << deco_name << "' not defined";
+                               << spawnby_name << "' not defined" << std::endl;
                        nspawnby = -1;
                        c_spawnby = CONTENT_AIR;
                }
        }
-       
+
        if (c_decolist.size())
                return;
-       
-       for (size_t i = 0; i != decolist_names.size(); i++) {           
+
+       for (size_t i = 0; i != decolist_names.size(); i++) {
                content_t c = ndef->getId(decolist_names[i]);
                if (c == CONTENT_IGNORE) {
                        errorstream << "DecoSimple::resolveNodeNames: decolist node '"
-                               << decolist_names[i] << "' not defined";
+                               << decolist_names[i] << "' not defined" << std::endl;
                        c = CONTENT_AIR;
                }
                c_decolist.push_back(c);
@@ -386,14 +424,14 @@ void DecoSimple::resolveNodeNames(INodeDefManager *ndef) {
 }
 
 
-void DecoSimple::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, s16 start_y, v3s16 p) {
+void DecoSimple::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, v3s16 p) {
        ManualMapVoxelManipulator *vm = mg->vm;
 
        u32 vi = vm->m_area.index(p);
        if (vm->m_data[vi].getContent() != c_place_on &&
                c_place_on != CONTENT_IGNORE)
                return;
-               
+
        if (nspawnby != -1) {
                int nneighs = 0;
                v3s16 dirs[8] = { // a Moore neighborhood
@@ -406,20 +444,20 @@ void DecoSimple::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, s16 start_y,
                        v3s16(-1, 0, -1),
                        v3s16( 1, 0, -1)
                };
-               
+
                for (int i = 0; i != 8; i++) {
                        u32 index = vm->m_area.index(p + dirs[i]);
                        if (vm->m_area.contains(index) &&
                                vm->m_data[index].getContent() == c_spawnby)
                                nneighs++;
                }
-               
+
                if (nneighs < nspawnby)
                        return;
        }
-       
+
        size_t ndecos = c_decolist.size();
-       content_t c = ndecos ? c_decolist[pr->range(0, ndecos - 1)] : c_deco;
+       content_t c_place = ndecos ? c_decolist[pr->range(0, ndecos - 1)] : c_deco;
 
        s16 height = (deco_height_max > 0) ?
                pr->range(deco_height, deco_height_max) : deco_height;
@@ -427,9 +465,14 @@ void DecoSimple::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, s16 start_y,
        height = MYMIN(height, max_y - p.Y);
 
        v3s16 em = vm->m_area.getExtent();
-       for (int i = start_y; i < height; i++) {
+       for (int i = 0; i < height; i++) {
                vm->m_area.add_y(em, vi, 1);
-               vm->m_data[vi] = MapNode(c);
+
+               content_t c = vm->m_data[vi].getContent();
+               if (c != CONTENT_AIR && c != CONTENT_IGNORE)
+                       break;
+
+               vm->m_data[vi] = MapNode(c_place);
        }
 }
 
@@ -447,6 +490,413 @@ std::string DecoSimple::getName() {
 ///////////////////////////////////////////////////////////////////////////////
 
 
+DecoSchematic::DecoSchematic() {
+       node_names  = NULL;
+       schematic   = NULL;
+       slice_probs = NULL;
+       flags       = 0;
+       size        = v3s16(0, 0, 0);
+}
+
+
+DecoSchematic::~DecoSchematic() {
+       delete node_names;
+       delete []schematic;
+       delete []slice_probs;
+}
+
+
+void DecoSchematic::resolveNodeNames(INodeDefManager *ndef) {
+       Decoration::resolveNodeNames(ndef);
+
+       if (filename.empty())
+               return;
+
+       if (!node_names) {
+               errorstream << "DecoSchematic::resolveNodeNames: node name list was "
+                       "not created" << std::endl;
+               return;
+       }
+
+       for (size_t i = 0; i != node_names->size(); i++) {
+               std::string name = node_names->at(i);
+
+               std::map<std::string, std::string>::iterator it;
+               it = replacements.find(name);
+               if (it != replacements.end())
+                       name = it->second;
+
+               content_t c = ndef->getId(name);
+               if (c == CONTENT_IGNORE) {
+                       errorstream << "DecoSchematic::resolveNodeNames: node '"
+                               << name << "' not defined" << std::endl;
+                       c = CONTENT_AIR;
+               }
+
+               c_nodes.push_back(c);
+       }
+
+       for (int i = 0; i != size.X * size.Y * size.Z; i++)
+               schematic[i].setContent(c_nodes[schematic[i].getContent()]);
+
+       delete node_names;
+       node_names = NULL;
+}
+
+
+void DecoSchematic::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, v3s16 p) {
+       ManualMapVoxelManipulator *vm = mg->vm;
+
+       if (flags & DECO_PLACE_CENTER_X)
+               p.X -= (size.X + 1) / 2;
+       if (flags & DECO_PLACE_CENTER_Y)
+               p.Y -= (size.Y + 1) / 2;
+       if (flags & DECO_PLACE_CENTER_Z)
+               p.Z -= (size.Z + 1) / 2;
+
+       u32 vi = vm->m_area.index(p);
+       if (vm->m_data[vi].getContent() != c_place_on &&
+               c_place_on != CONTENT_IGNORE)
+               return;
+
+       Rotation rot = (rotation == ROTATE_RAND) ?
+               (Rotation)pr->range(ROTATE_0, ROTATE_270) : rotation;
+
+       blitToVManip(p, vm, rot, false);
+}
+
+
+int DecoSchematic::getHeight() {
+       return size.Y;
+}
+
+
+std::string DecoSchematic::getName() {
+       return filename;
+}
+
+
+void DecoSchematic::blitToVManip(v3s16 p, ManualMapVoxelManipulator *vm,
+                                                               Rotation rot, bool force_placement) {
+       int xstride = 1;
+       int ystride = size.X;
+       int zstride = size.X * size.Y;
+
+       s16 sx = size.X;
+       s16 sy = size.Y;
+       s16 sz = size.Z;
+
+       int i_start, i_step_x, i_step_z;
+       switch (rot) {
+               case ROTATE_90:
+                       i_start  = sx - 1;
+                       i_step_x = zstride;
+                       i_step_z = -xstride;
+                       SWAP(s16, sx, sz);
+                       break;
+               case ROTATE_180:
+                       i_start  = zstride * (sz - 1) + sx - 1;
+                       i_step_x = -xstride;
+                       i_step_z = -zstride;
+                       break;
+               case ROTATE_270:
+                       i_start  = zstride * (sz - 1);
+                       i_step_x = -zstride;
+                       i_step_z = xstride;
+                       SWAP(s16, sx, sz);
+                       break;
+               default:
+                       i_start  = 0;
+                       i_step_x = xstride;
+                       i_step_z = zstride;
+       }
+
+       s16 y_map = p.Y;
+       for (s16 y = 0; y != sy; y++) {
+               if (slice_probs[y] != MTSCHEM_PROB_ALWAYS &&
+                       myrand_range(1, 255) > slice_probs[y])
+                       continue;
+
+               for (s16 z = 0; z != sz; z++) {
+                       u32 i = z * i_step_z + y * ystride + i_start;
+                       for (s16 x = 0; x != sx; x++, i += i_step_x) {
+                               u32 vi = vm->m_area.index(p.X + x, y_map, p.Z + z);
+                               if (!vm->m_area.contains(vi))
+                                       continue;
+
+                               if (schematic[i].getContent() == CONTENT_IGNORE)
+                                       continue;
+
+                               if (schematic[i].param1 == MTSCHEM_PROB_NEVER)
+                                       continue;
+
+                               if (!force_placement) {
+                                       content_t c = vm->m_data[vi].getContent();
+                                       if (c != CONTENT_AIR && c != CONTENT_IGNORE)
+                                               continue;
+                               }
+
+                               if (schematic[i].param1 != MTSCHEM_PROB_ALWAYS &&
+                                       myrand_range(1, 255) > schematic[i].param1)
+                                       continue;
+
+                               vm->m_data[vi] = schematic[i];
+                               vm->m_data[vi].param1 = 0;
+
+                               if (rot)
+                                       vm->m_data[vi].rotateAlongYAxis(ndef, rot);
+                       }
+               }
+               y_map++;
+       }
+}
+
+
+void DecoSchematic::placeStructure(Map *map, v3s16 p) {
+       assert(schematic != NULL);
+       ManualMapVoxelManipulator *vm = new ManualMapVoxelManipulator(map);
+
+       Rotation rot = (rotation == ROTATE_RAND) ?
+               (Rotation)myrand_range(ROTATE_0, ROTATE_270) : rotation;
+
+       v3s16 s = (rot == ROTATE_90 || rot == ROTATE_270) ?
+                               v3s16(size.Z, size.Y, size.X) : size;
+
+       if (flags & DECO_PLACE_CENTER_X)
+               p.X -= (s.X + 1) / 2;
+       if (flags & DECO_PLACE_CENTER_Y)
+               p.Y -= (s.Y + 1) / 2;
+       if (flags & DECO_PLACE_CENTER_Z)
+               p.Z -= (s.Z + 1) / 2;
+
+       v3s16 bp1 = getNodeBlockPos(p);
+       v3s16 bp2 = getNodeBlockPos(p + s - v3s16(1,1,1));
+       vm->initialEmerge(bp1, bp2);
+
+       blitToVManip(p, vm, rot, true);
+
+       std::map<v3s16, MapBlock *> lighting_modified_blocks;
+       std::map<v3s16, MapBlock *> modified_blocks;
+       vm->blitBackAll(&modified_blocks);
+
+       // TODO: Optimize this by using Mapgen::calcLighting() instead
+       lighting_modified_blocks.insert(modified_blocks.begin(), modified_blocks.end());
+       map->updateLighting(lighting_modified_blocks, modified_blocks);
+
+       MapEditEvent event;
+       event.type = MEET_OTHER;
+       for (std::map<v3s16, MapBlock *>::iterator
+               it = modified_blocks.begin();
+               it != modified_blocks.end(); ++it)
+               event.modified_blocks.insert(it->first);
+
+       map->dispatchEvent(&event);
+}
+
+
+bool DecoSchematic::loadSchematicFile() {
+       content_t cignore = CONTENT_IGNORE;
+       bool have_cignore = false;
+
+       std::ifstream is(filename.c_str(), std::ios_base::binary);
+
+       u32 signature = readU32(is);
+       if (signature != MTSCHEM_FILE_SIGNATURE) {
+               errorstream << "loadSchematicFile: invalid schematic "
+                       "file" << std::endl;
+               return false;
+       }
+
+       u16 version = readU16(is);
+       if (version > MTSCHEM_FILE_VER_HIGHEST_READ) {
+               errorstream << "loadSchematicFile: unsupported schematic "
+                       "file version" << std::endl;
+               return false;
+       }
+
+       size = readV3S16(is);
+
+       delete []slice_probs;
+       slice_probs = new u8[size.Y];
+       if (version >= 3) {
+               for (int y = 0; y != size.Y; y++)
+                       slice_probs[y] = readU8(is);
+       } else {
+               for (int y = 0; y != size.Y; y++)
+                       slice_probs[y] = MTSCHEM_PROB_ALWAYS;
+       }
+
+       int nodecount = size.X * size.Y * size.Z;
+
+       u16 nidmapcount = readU16(is);
+
+       node_names = new std::vector<std::string>;
+       for (int i = 0; i != nidmapcount; i++) {
+               std::string name = deSerializeString(is);
+               if (name == "ignore") {
+                       name = "air";
+                       cignore = i;
+                       have_cignore = true;
+               }
+               node_names->push_back(name);
+       }
+
+       delete []schematic;
+       schematic = new MapNode[nodecount];
+       MapNode::deSerializeBulk(is, SER_FMT_VER_HIGHEST_READ, schematic,
+                               nodecount, 2, 2, true);
+
+       if (version == 1) { // fix up the probability values
+               for (int i = 0; i != nodecount; i++) {
+                       if (schematic[i].param1 == 0)
+                               schematic[i].param1 = MTSCHEM_PROB_ALWAYS;
+                       if (have_cignore && schematic[i].getContent() == cignore)
+                               schematic[i].param1 = MTSCHEM_PROB_NEVER;
+               }
+       }
+
+       return true;
+}
+
+
+/*
+       Minetest Schematic File Format
+
+       All values are stored in big-endian byte order.
+       [u32] signature: 'MTSM'
+       [u16] version: 3
+       [u16] size X
+       [u16] size Y
+       [u16] size Z
+       For each Y:
+               [u8] slice probability value
+       [Name-ID table] Name ID Mapping Table
+               [u16] name-id count
+               For each name-id mapping:
+                       [u16] name length
+                       [u8[]] name
+       ZLib deflated {
+       For each node in schematic:  (for z, y, x)
+               [u16] content
+       For each node in schematic:
+               [u8] probability of occurance (param1)
+       For each node in schematic:
+               [u8] param2
+       }
+
+       Version changes:
+       1 - Initial version
+       2 - Fixed messy never/always place; 0 probability is now never, 0xFF is always
+       3 - Added y-slice probabilities; this allows for variable height structures
+*/
+void DecoSchematic::saveSchematicFile(INodeDefManager *ndef) {
+       std::ostringstream ss(std::ios_base::binary);
+
+       writeU32(ss, MTSCHEM_FILE_SIGNATURE);         // signature
+       writeU16(ss, MTSCHEM_FILE_VER_HIGHEST_WRITE); // version
+       writeV3S16(ss, size);                         // schematic size
+
+       for (int y = 0; y != size.Y; y++)             // Y slice probabilities
+               writeU8(ss, slice_probs[y]);
+
+       std::vector<content_t> usednodes;
+       int nodecount = size.X * size.Y * size.Z;
+       build_nnlist_and_update_ids(schematic, nodecount, &usednodes);
+
+       u16 numids = usednodes.size();
+       writeU16(ss, numids); // name count
+       for (int i = 0; i != numids; i++)
+               ss << serializeString(ndef->get(usednodes[i]).name); // node names
+
+       // compressed bulk node data
+       MapNode::serializeBulk(ss, SER_FMT_VER_HIGHEST_WRITE, schematic,
+                               nodecount, 2, 2, true);
+
+       fs::safeWriteToFile(filename, ss.str());
+}
+
+
+void build_nnlist_and_update_ids(MapNode *nodes, u32 nodecount,
+                                               std::vector<content_t> *usednodes) {
+       std::map<content_t, content_t> nodeidmap;
+       content_t numids = 0;
+
+       for (u32 i = 0; i != nodecount; i++) {
+               content_t id;
+               content_t c = nodes[i].getContent();
+
+               std::map<content_t, content_t>::const_iterator it = nodeidmap.find(c);
+               if (it == nodeidmap.end()) {
+                       id = numids;
+                       numids++;
+
+                       usednodes->push_back(c);
+                       nodeidmap.insert(std::make_pair(c, id));
+               } else {
+                       id = it->second;
+               }
+               nodes[i].setContent(id);
+       }
+}
+
+
+bool DecoSchematic::getSchematicFromMap(Map *map, v3s16 p1, v3s16 p2) {
+       ManualMapVoxelManipulator *vm = new ManualMapVoxelManipulator(map);
+
+       v3s16 bp1 = getNodeBlockPos(p1);
+       v3s16 bp2 = getNodeBlockPos(p2);
+       vm->initialEmerge(bp1, bp2);
+
+       size = p2 - p1 + 1;
+
+       slice_probs = new u8[size.Y];
+       for (s16 y = 0; y != size.Y; y++)
+               slice_probs[y] = MTSCHEM_PROB_ALWAYS;
+
+       schematic = new MapNode[size.X * size.Y * size.Z];
+
+       u32 i = 0;
+       for (s16 z = p1.Z; z <= p2.Z; z++)
+       for (s16 y = p1.Y; y <= p2.Y; y++) {
+               u32 vi = vm->m_area.index(p1.X, y, z);
+               for (s16 x = p1.X; x <= p2.X; x++, i++, vi++) {
+                       schematic[i] = vm->m_data[vi];
+                       schematic[i].param1 = MTSCHEM_PROB_ALWAYS;
+               }
+       }
+
+       delete vm;
+       return true;
+}
+
+
+void DecoSchematic::applyProbabilities(v3s16 p0,
+       std::vector<std::pair<v3s16, u8> > *plist,
+       std::vector<std::pair<s16, u8> > *splist) {
+
+       for (size_t i = 0; i != plist->size(); i++) {
+               v3s16 p = (*plist)[i].first - p0;
+               int index = p.Z * (size.Y * size.X) + p.Y * size.X + p.X;
+               if (index < size.Z * size.Y * size.X) {
+                       u8 prob = (*plist)[i].second;
+                       schematic[index].param1 = prob;
+
+                       // trim unnecessary node names from schematic
+                       if (prob == MTSCHEM_PROB_NEVER)
+                               schematic[index].setContent(CONTENT_AIR);
+               }
+       }
+
+       for (size_t i = 0; i != splist->size(); i++) {
+               s16 y = (*splist)[i].first - p0.Y;
+               slice_probs[y] = (*splist)[i].second;
+       }
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+
+
 Mapgen::Mapgen() {
        seed        = 0;
        water_level = 0;
@@ -456,6 +906,15 @@ Mapgen::Mapgen() {
        ndef        = NULL;
        heightmap   = NULL;
        biomemap    = NULL;
+
+       for (unsigned int i = 0; i != NUM_GEN_NOTIFY; i++)
+               gen_notifications[i] = new std::vector<v3s16>;
+}
+
+
+Mapgen::~Mapgen() {
+       for (unsigned int i = 0; i != NUM_GEN_NOTIFY; i++)
+               delete gen_notifications[i];
 }
 
 
@@ -466,7 +925,7 @@ s16 Mapgen::findGroundLevelFull(v2s16 p2d) {
        s16 y_nodes_min = vm->m_area.MinEdge.Y;
        u32 i = vm->m_area.index(p2d.X, y_nodes_max, p2d.Y);
        s16 y;
-       
+
        for (y = y_nodes_max; y >= y_nodes_min; y--) {
                MapNode &n = vm->m_data[i];
                if (ndef->get(n).walkable)
@@ -482,7 +941,7 @@ s16 Mapgen::findGroundLevel(v2s16 p2d, s16 ymin, s16 ymax) {
        v3s16 em = vm->m_area.getExtent();
        u32 i = vm->m_area.index(p2d.X, ymax, p2d.Y);
        s16 y;
-       
+
        for (y = ymax; y >= ymin; y--) {
                MapNode &n = vm->m_data[i];
                if (ndef->get(n).walkable)
@@ -497,13 +956,20 @@ s16 Mapgen::findGroundLevel(v2s16 p2d, s16 ymin, s16 ymax) {
 void Mapgen::updateHeightmap(v3s16 nmin, v3s16 nmax) {
        if (!heightmap)
                return;
-       
+
        //TimeTaker t("Mapgen::updateHeightmap", NULL, PRECISION_MICRO);
        int index = 0;
        for (s16 z = nmin.Z; z <= nmax.Z; z++) {
-               for (s16 x = nmin.X; x <= nmax.X; x++) {
+               for (s16 x = nmin.X; x <= nmax.X; x++, index++) {
                        s16 y = findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);
-                       heightmap[index++] = y;
+
+                       // if the values found are out of range, trust the old heightmap
+                       if (y == nmax.Y && heightmap[index] > nmax.Y)
+                               continue;
+                       if (y == nmin.Y - 1 && heightmap[index] < nmin.Y)
+                               continue;
+
+                       heightmap[index] = y;
                }
        }
        //printf("updateHeightmap: %dus\n", t.stop());
@@ -511,8 +977,10 @@ void Mapgen::updateHeightmap(v3s16 nmin, v3s16 nmax) {
 
 
 void Mapgen::updateLiquid(UniqueQueue<v3s16> *trans_liquid, v3s16 nmin, v3s16 nmax) {
-       bool isliquid, wasliquid;
+       bool isliquid, wasliquid, rare;
        v3s16 em  = vm->m_area.getExtent();
+       rare = g_settings->getBool("liquid_finite");
+       int rarecnt = 0;
 
        for (s16 z = nmin.Z; z <= nmax.Z; z++) {
                for (s16 x = nmin.X; x <= nmax.X; x++) {
@@ -522,8 +990,8 @@ void Mapgen::updateLiquid(UniqueQueue<v3s16> *trans_liquid, v3s16 nmin, v3s16 nm
                        for (s16 y = nmax.Y; y >= nmin.Y; y--) {
                                isliquid = ndef->get(vm->m_data[i]).isLiquid();
 
-                               // there was a change between liquid and nonliquid, add to queue
-                               if (isliquid != wasliquid)
+                               // there was a change between liquid and nonliquid, add to queue. no need to add every with liquid_finite
+                               if (isliquid != wasliquid && (!rare || !(rarecnt++ % 36)))
                                        trans_liquid->push_back(v3s16(x, y, z));
 
                                wasliquid = isliquid;
@@ -591,7 +1059,7 @@ void Mapgen::calcLighting(v3s16 nmin, v3s16 nmax) {
                                continue;
                        }
                        vm->m_area.add_y(em, i, -1);
+
                        for (int y = a.MaxEdge.Y; y >= a.MinEdge.Y; y--) {
                                MapNode &n = vm->m_data[i];
                                if (!ndef->get(n).sunlight_propagates)
@@ -618,12 +1086,12 @@ void Mapgen::calcLighting(v3s16 nmin, v3s16 nmax) {
 
                                u8 light = n.param1 & 0x0F;
                                if (light) {
-                                       lightSpread(a, v3s16(x,     y,     z + 1), light);
-                                       lightSpread(a, v3s16(x,     y + 1, z    ), light);
-                                       lightSpread(a, v3s16(x + 1, y,     z    ), light);
-                                       lightSpread(a, v3s16(x,     y,     z - 1), light);
-                                       lightSpread(a, v3s16(x,     y - 1, z    ), light);
-                                       lightSpread(a, v3s16(x - 1, y,     z    ), light);
+                                       lightSpread(a, v3s16(x,     y,     z + 1), light - 1);
+                                       lightSpread(a, v3s16(x,     y + 1, z    ), light - 1);
+                                       lightSpread(a, v3s16(x + 1, y,     z    ), light - 1);
+                                       lightSpread(a, v3s16(x,     y,     z - 1), light - 1);
+                                       lightSpread(a, v3s16(x,     y - 1, z    ), light - 1);
+                                       lightSpread(a, v3s16(x - 1, y,     z    ), light - 1);
                                }
                        }
                }
@@ -654,95 +1122,3 @@ void Mapgen::calcLightingOld(v3s16 nmin, v3s16 nmax) {
                vm->spreadLight(bank, light_sources, ndef);
        }
 }
-//////////////////////// Mapgen V6 parameter read/write
-bool MapgenV6Params::readParams(Settings *settings) {
-       freq_desert = settings->getFloat("mgv6_freq_desert");
-       freq_beach  = settings->getFloat("mgv6_freq_beach");
-
-       bool success = 
-               settings->getNoiseParams("mgv6_np_terrain_base",   np_terrain_base)   &&
-               settings->getNoiseParams("mgv6_np_terrain_higher", np_terrain_higher) &&
-               settings->getNoiseParams("mgv6_np_steepness",      np_steepness)      &&
-               settings->getNoiseParams("mgv6_np_height_select",  np_height_select)  &&
-               settings->getNoiseParams("mgv6_np_mud",            np_mud)            &&
-               settings->getNoiseParams("mgv6_np_beach",          np_beach)          &&
-               settings->getNoiseParams("mgv6_np_biome",          np_biome)          &&
-               settings->getNoiseParams("mgv6_np_cave",           np_cave)           &&
-               settings->getNoiseParams("mgv6_np_humidity",       np_humidity)       &&
-               settings->getNoiseParams("mgv6_np_trees",          np_trees)          &&
-               settings->getNoiseParams("mgv6_np_apple_trees",    np_apple_trees);
-       return success;
-}
-void MapgenV6Params::writeParams(Settings *settings) {
-       settings->setFloat("mgv6_freq_desert", freq_desert);
-       settings->setFloat("mgv6_freq_beach",  freq_beach);
-       settings->setNoiseParams("mgv6_np_terrain_base",   np_terrain_base);
-       settings->setNoiseParams("mgv6_np_terrain_higher", np_terrain_higher);
-       settings->setNoiseParams("mgv6_np_steepness",      np_steepness);
-       settings->setNoiseParams("mgv6_np_height_select",  np_height_select);
-       settings->setNoiseParams("mgv6_np_mud",            np_mud);
-       settings->setNoiseParams("mgv6_np_beach",          np_beach);
-       settings->setNoiseParams("mgv6_np_biome",          np_biome);
-       settings->setNoiseParams("mgv6_np_cave",           np_cave);
-       settings->setNoiseParams("mgv6_np_humidity",       np_humidity);
-       settings->setNoiseParams("mgv6_np_trees",          np_trees);
-       settings->setNoiseParams("mgv6_np_apple_trees",    np_apple_trees);
-}
-
-
-bool MapgenV7Params::readParams(Settings *settings) {
-       bool success = 
-               settings->getNoiseParams("mgv7_np_terrain_base",    np_terrain_base)    &&
-               settings->getNoiseParams("mgv7_np_terrain_alt",     np_terrain_alt)     &&
-               settings->getNoiseParams("mgv7_np_terrain_mod",     np_terrain_mod)     &&
-               settings->getNoiseParams("mgv7_np_terrain_persist", np_terrain_persist) &&
-               settings->getNoiseParams("mgv7_np_height_select",   np_height_select)   &&
-               settings->getNoiseParams("mgv7_np_ridge",           np_ridge);
-       return success;
-}
-
-
-void MapgenV7Params::writeParams(Settings *settings) {
-       settings->setNoiseParams("mgv7_np_terrain_base",    np_terrain_base);
-       settings->setNoiseParams("mgv7_np_terrain_alt",     np_terrain_alt);
-       settings->setNoiseParams("mgv7_np_terrain_mod",     np_terrain_mod);
-       settings->setNoiseParams("mgv7_np_terrain_persist", np_terrain_persist);
-       settings->setNoiseParams("mgv7_np_height_select",   np_height_select);
-       settings->setNoiseParams("mgv7_np_ridge",           np_ridge);
-}
-
-
-/////////////////////////////////// legacy static functions for farmesh
-
-s16 Mapgen::find_ground_level_from_noise(u64 seed, v2s16 p2d, s16 precision) {
-       //just need to return something
-       s16 level = 5;
-       return level;
-}
-
-
-bool Mapgen::get_have_beach(u64 seed, v2s16 p2d) {
-       double sandnoise = noise2d_perlin(
-                               0.2+(float)p2d.X/250, 0.7+(float)p2d.Y/250,
-                               seed+59420, 3, 0.50);
-       return (sandnoise > 0.15);
-}
-
-
-double Mapgen::tree_amount_2d(u64 seed, v2s16 p) {
-       double noise = noise2d_perlin(
-                       0.5+(float)p.X/125, 0.5+(float)p.Y/125,
-                       seed+2, 4, 0.66);
-       double zeroval = -0.39;
-       if(noise < zeroval)
-               return 0;
-       else
-               return 0.04 * (noise-zeroval) / (1.0-zeroval);
-}