]> git.lizzy.rs Git - minetest.git/blobdiff - src/mg_schematic.cpp
Biome API: Make fallback biome stone and water, disable filler
[minetest.git] / src / mg_schematic.cpp
index 3100637ae82f70508f6a8dca9eb018078443c09d..a5ffb20b8faa38e56e7873a4df11a4508be7e32d 100644 (file)
@@ -94,8 +94,7 @@ void Schematic::resolveNodeNames()
 }
 
 
-void Schematic::blitToVManip(v3s16 p, MMVManip *vm,
-       Rotation rot, bool force_placement)
+void Schematic::blitToVManip(v3s16 p, MMVManip *vm, Rotation rot, bool force_place)
 {
        sanity_check(m_ndef != NULL);
 
@@ -134,8 +133,8 @@ void Schematic::blitToVManip(v3s16 p, MMVManip *vm,
 
        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])
+               if ((slice_probs[y] != MTSCHEM_PROB_ALWAYS) &&
+                       (slice_probs[y] <= myrand_range(1, MTSCHEM_PROB_ALWAYS)))
                        continue;
 
                for (s16 z = 0; z != sz; z++) {
@@ -148,17 +147,20 @@ void Schematic::blitToVManip(v3s16 p, MMVManip *vm,
                                if (schemdata[i].getContent() == CONTENT_IGNORE)
                                        continue;
 
-                               if (schemdata[i].param1 == MTSCHEM_PROB_NEVER)
+                               u8 placement_prob     = schemdata[i].param1 & MTSCHEM_PROB_MASK;
+                               bool force_place_node = schemdata[i].param1 & MTSCHEM_FORCE_PLACE;
+
+                               if (placement_prob == MTSCHEM_PROB_NEVER)
                                        continue;
 
-                               if (!force_placement) {
+                               if (!force_place && !force_place_node) {
                                        content_t c = vm->m_data[vi].getContent();
                                        if (c != CONTENT_AIR && c != CONTENT_IGNORE)
                                                continue;
                                }
 
-                               if (schemdata[i].param1 != MTSCHEM_PROB_ALWAYS &&
-                                       myrand_range(1, 255) > schemdata[i].param1)
+                               if ((placement_prob != MTSCHEM_PROB_ALWAYS) &&
+                                       (placement_prob <= myrand_range(1, MTSCHEM_PROB_ALWAYS)))
                                        continue;
 
                                vm->m_data[vi] = schemdata[i];
@@ -174,7 +176,7 @@ void Schematic::blitToVManip(v3s16 p, MMVManip *vm,
 
 
 void Schematic::placeStructure(Map *map, v3s16 p, u32 flags,
-       Rotation rot, bool force_placement)
+       Rotation rot, bool force_place)
 {
        assert(schemdata != NULL); // Pre-condition
        sanity_check(m_ndef != NULL);
@@ -198,7 +200,7 @@ void Schematic::placeStructure(Map *map, v3s16 p, u32 flags,
        v3s16 bp2 = getNodeBlockPos(p + s - v3s16(1,1,1));
        vm->initialEmerge(bp1, bp2);
 
-       blitToVManip(p, vm, rot, force_placement);
+       blitToVManip(p, vm, rot, force_place);
 
        std::map<v3s16, MapBlock *> lighting_modified_blocks;
        std::map<v3s16, MapBlock *> modified_blocks;
@@ -226,6 +228,7 @@ bool Schematic::deserializeFromMts(std::istream *is,
        content_t cignore = CONTENT_IGNORE;
        bool have_cignore = false;
 
+       //// Read signature
        u32 signature = readU32(ss);
        if (signature != MTSCHEM_FILE_SIGNATURE) {
                errorstream << "Schematic::deserializeFromMts: invalid schematic "
@@ -233,6 +236,7 @@ bool Schematic::deserializeFromMts(std::istream *is,
                return false;
        }
 
+       //// Read version
        u16 version = readU16(ss);
        if (version > MTSCHEM_FILE_VER_HIGHEST_READ) {
                errorstream << "Schematic::deserializeFromMts: unsupported schematic "
@@ -240,18 +244,21 @@ bool Schematic::deserializeFromMts(std::istream *is,
                return false;
        }
 
+       //// Read size
        size = readV3S16(ss);
 
+       //// Read Y-slice probability values
        delete []slice_probs;
        slice_probs = new u8[size.Y];
        for (int y = 0; y != size.Y; y++)
-               slice_probs[y] = (version >= 3) ? readU8(ss) : MTSCHEM_PROB_ALWAYS;
+               slice_probs[y] = (version >= 3) ? readU8(ss) : MTSCHEM_PROB_ALWAYS_OLD;
 
+       //// Read node names
        u16 nidmapcount = readU16(ss);
        for (int i = 0; i != nidmapcount; i++) {
                std::string name = deSerializeString(ss);
 
-               // Instances of "ignore" from ver 1 are converted to air (and instances
+               // Instances of "ignore" from v1 are converted to air (and instances
                // are fixed to have MTSCHEM_PROB_NEVER later on).
                if (name == "ignore") {
                        name = "air";
@@ -262,6 +269,7 @@ bool Schematic::deserializeFromMts(std::istream *is,
                names->push_back(name);
        }
 
+       //// Read node data
        size_t nodecount = size.X * size.Y * size.Z;
 
        delete []schemdata;
@@ -270,16 +278,24 @@ bool Schematic::deserializeFromMts(std::istream *is,
        MapNode::deSerializeBulk(ss, SER_FMT_VER_HIGHEST_READ, schemdata,
                nodecount, 2, 2, true);
 
-       // fix any probability values for nodes that were ignore
-       if (version == 1) {
+       // Fix probability values for nodes that were ignore; removed in v2
+       if (version < 2) {
                for (size_t i = 0; i != nodecount; i++) {
                        if (schemdata[i].param1 == 0)
-                               schemdata[i].param1 = MTSCHEM_PROB_ALWAYS;
+                               schemdata[i].param1 = MTSCHEM_PROB_ALWAYS_OLD;
                        if (have_cignore && schemdata[i].getContent() == cignore)
                                schemdata[i].param1 = MTSCHEM_PROB_NEVER;
                }
        }
 
+       // Fix probability values for probability range truncation introduced in v4
+       if (version < 4) {
+               for (s16 y = 0; y != size.Y; y++)
+                       slice_probs[y] >>= 1;
+               for (size_t i = 0; i != nodecount; i++)
+                       schemdata[i].param1 >>= 1;
+       }
+
        return true;
 }
 
@@ -309,14 +325,18 @@ bool Schematic::serializeToMts(std::ostream *os,
 
 
 bool Schematic::serializeToLua(std::ostream *os,
-       const std::vector<std::string> &names, bool use_comments)
+       const std::vector<std::string> &names, bool use_comments, u32 indent_spaces)
 {
        std::ostream &ss = *os;
 
+       std::string indent("\t");
+       if (indent_spaces > 0)
+               indent.assign(indent_spaces, ' ');
+
        //// Write header
        {
                ss << "schematic = {" << std::endl;
-               ss << "\tsize = "
+               ss << indent << "size = "
                        << "{x=" << size.X
                        << ", y=" << size.Y
                        << ", z=" << size.Z
@@ -325,41 +345,51 @@ bool Schematic::serializeToLua(std::ostream *os,
 
        //// Write y-slice probabilities
        {
-               ss << "\tyslice_prob = {" << std::endl;
+               ss << indent << "yslice_prob = {" << std::endl;
 
                for (u16 y = 0; y != size.Y; y++) {
-                       ss << "\t\t{"
+                       u8 probability = slice_probs[y] & MTSCHEM_PROB_MASK;
+
+                       ss << indent << indent << "{"
                                << "ypos=" << y
-                               << ", prob=" << (u16)slice_probs[y]
+                               << ", prob=" << (u16)probability * 2
                                << "}," << std::endl;
                }
 
-               ss << "\t}," << std::endl;
+               ss << indent << "}," << std::endl;
        }
 
        //// Write node data
        {
-               ss << "\tdata = {" << std::endl;
+               ss << indent << "data = {" << std::endl;
 
                u32 i = 0;
                for (u16 z = 0; z != size.Z; z++)
                for (u16 y = 0; y != size.Y; y++) {
                        if (use_comments) {
                                ss << std::endl
-                                       << "\t\t-- z=" << z
+                                       << indent << indent
+                                       << "-- z=" << z
                                        << ", y=" << y << std::endl;
                        }
 
                        for (u16 x = 0; x != size.X; x++, i++) {
-                               ss << "\t\t{"
+                               u8 probability   = schemdata[i].param1 & MTSCHEM_PROB_MASK;
+                               bool force_place = schemdata[i].param1 & MTSCHEM_FORCE_PLACE;
+
+                               ss << indent << indent << "{"
                                        << "name=\"" << names[schemdata[i].getContent()]
-                                       << "\", param1=" << (u16)schemdata[i].param1
-                                       << ", param2=" << (u16)schemdata[i].param2
-                                       << "}," << std::endl;
+                                       << "\", prob=" << (u16)probability * 2
+                                       << ", param2=" << (u16)schemdata[i].param2;
+
+                               if (force_place)
+                                       ss << ", force_place=true";
+
+                               ss << "}," << std::endl;
                        }
                }
 
-               ss << "\t}," << std::endl;
+               ss << indent << "}," << std::endl;
        }
 
        ss << "}" << std::endl;
@@ -400,15 +430,17 @@ bool Schematic::loadSchematicFromFile(const std::string &filename,
 }
 
 
-bool Schematic::saveSchematicToFile(const std::string &filename)
+bool Schematic::saveSchematicToFile(const std::string &filename,
+       INodeDefManager *ndef)
 {
        MapNode *orig_schemdata = schemdata;
        std::vector<std::string> ndef_nodenames;
        std::vector<std::string> *names;
 
-       // Only carry out the modification if we know the nodes
-       // were resolved at this point
-       if (m_resolve_done) {
+       if (m_resolve_done && ndef == NULL)
+               ndef = m_ndef;
+
+       if (ndef) {
                names = &ndef_nodenames;
 
                u32 volume = size.X * size.Y * size.Z;
@@ -416,19 +448,22 @@ bool Schematic::saveSchematicToFile(const std::string &filename)
                for (u32 i = 0; i != volume; i++)
                        schemdata[i] = orig_schemdata[i];
 
-               generate_nodelist_and_update_ids(schemdata, volume, names, m_ndef);
+               generate_nodelist_and_update_ids(schemdata, volume, names, ndef);
        } else { // otherwise, use the names we have on hand in the list
                names = &m_nodenames;
        }
 
        std::ostringstream os(std::ios_base::binary);
-       serializeToMts(&os, *names);
+       bool status = serializeToMts(&os, *names);
 
-       if (m_resolve_done) {
+       if (ndef) {
                delete []schemdata;
                schemdata = orig_schemdata;
        }
 
+       if (!status)
+               return false;
+
        return fs::safeWriteToFile(filename, os.str());
 }