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Decoration: Add schematic Y-slice probability support

This commit is contained in:
kwolekr 2013-12-01 01:23:39 -05:00
parent de0cdbc01c
commit 20e3d550fa
4 changed files with 108 additions and 47 deletions
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5
doc/lua_api.txt
View File

@ -1491,7 +1491,7 @@ minetest.delete_particlespawner(id, player)
^ otherwise on all clients
Schematics:
minetest.create_schematic(p1, p2, probability_list, filename)
minetest.create_schematic(p1, p2, probability_list, filename, slice_prob_list)
^ Create a schematic from the volume of map specified by the box formed by p1 and p2.
^ Apply the specified probability values to the specified nodes in probability_list.
^ probability_list is an array of tables containing two fields, pos and prob.
@ -1500,6 +1500,9 @@ minetest.create_schematic(p1, p2, probability_list, filename)
^ If there are two or more entries with the same pos value, the last occuring in the array is used.
^ If pos is not inside the box formed by p1 and p2, it is ignored.
^ If probability_list is nil, no probabilities are applied.
^ Slice probability works in the same manner, except takes a field called ypos instead which indicates
^ the y position of the slice with a probability applied.
^ If slice probability list is nil, no slice probabilities are applied.
^ Saves schematic in the Minetest Schematic format to filename.
minetest.place_schematic(pos, schematic, rotation, replacements)

53
src/mapgen.cpp
View File

@ -484,6 +484,7 @@ std::string DecoSimple::getName() {
DecoSchematic::DecoSchematic() {
node_names = NULL;
schematic = NULL;
slice_probs = NULL;
flags = 0;
size = v3s16(0, 0, 0);
}
@ -492,6 +493,7 @@ DecoSchematic::DecoSchematic() {
DecoSchematic::~DecoSchematic() {
delete node_names;
delete []schematic;
delete []slice_probs;
}
@ -600,11 +602,16 @@ void DecoSchematic::blitToVManip(v3s16 p, ManualMapVoxelManipulator *vm,
i_step_z = zstride;
}
for (s16 z = 0; z != sz; z++)
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, p.Y + y, p.Z + z);
u32 vi = vm->m_area.index(p.X + x, y_map, p.Z + z);
if (!vm->m_area.contains(vi))
continue;
@ -631,6 +638,8 @@ void DecoSchematic::blitToVManip(v3s16 p, ManualMapVoxelManipulator *vm,
vm->m_data[vi].rotateAlongYAxis(ndef, rot);
}
}
y_map++;
}
}
@ -690,13 +699,24 @@ bool DecoSchematic::loadSchematicFile() {
}
u16 version = readU16(is);
if (version > 2) {
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);
@ -712,7 +732,7 @@ bool DecoSchematic::loadSchematicFile() {
node_names->push_back(name);
}
delete schematic;
delete []schematic;
schematic = new MapNode[nodecount];
MapNode::deSerializeBulk(is, SER_FMT_VER_HIGHEST_READ, schematic,
nodecount, 2, 2, true);
@ -735,10 +755,12 @@ bool DecoSchematic::loadSchematicFile() {
All values are stored in big-endian byte order.
[u32] signature: 'MTSM'
[u16] version: 2
[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:
@ -761,9 +783,12 @@ void DecoSchematic::saveSchematicFile(INodeDefManager *ndef) {
std::ostringstream ss(std::ios_base::binary);
writeU32(ss, MTSCHEM_FILE_SIGNATURE); // signature
writeU16(ss, 2); // version
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);
@ -813,6 +838,11 @@ bool DecoSchematic::getSchematicFromMap(Map *map, v3s16 p1, v3s16 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;
@ -830,8 +860,10 @@ bool DecoSchematic::getSchematicFromMap(Map *map, v3s16 p1, v3s16 p2) {
}
void DecoSchematic::applyProbabilities(std::vector<std::pair<v3s16, u8> > *plist,
v3s16 p0) {
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;
@ -844,6 +876,11 @@ void DecoSchematic::applyProbabilities(std::vector<std::pair<v3s16, u8> > *plist
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;
}
}

8
src/mapgen.h
View File

@ -256,6 +256,9 @@ public:
};
#define MTSCHEM_FILE_SIGNATURE 0x4d54534d // 'MTSM'
#define MTSCHEM_FILE_VER_HIGHEST_READ 3
#define MTSCHEM_FILE_VER_HIGHEST_WRITE 3
#define MTSCHEM_PROB_NEVER 0x00
#define MTSCHEM_PROB_ALWAYS 0xFF
@ -271,6 +274,7 @@ public:
Rotation rotation;
v3s16 size;
MapNode *schematic;
u8 *slice_probs;
DecoSchematic();
~DecoSchematic();
@ -288,7 +292,9 @@ public:
bool getSchematicFromMap(Map *map, v3s16 p1, v3s16 p2);
void placeStructure(Map *map, v3s16 p);
void applyProbabilities(std::vector<std::pair<v3s16, u8> > *plist, v3s16 p0);
void applyProbabilities(v3s16 p0,
std::vector<std::pair<v3s16, u8> > *plist,
std::vector<std::pair<s16, u8> > *splist);
};
void build_nnlist_and_update_ids(MapNode *nodes, u32 nodecount,

23
src/script/lua_api/l_mapgen.cpp
View File

@ -475,7 +475,7 @@ int ModApiMapgen::l_create_schematic(lua_State *L)
v3s16 p2 = read_v3s16(L, 2);
sortBoxVerticies(p1, p2);
std::vector<std::pair<v3s16, u8> > probability_list;
std::vector<std::pair<v3s16, u8> > prob_list;
if (lua_istable(L, 3)) {
lua_pushnil(L);
while (lua_next(L, 3)) {
@ -485,14 +485,29 @@ int ModApiMapgen::l_create_schematic(lua_State *L)
lua_pop(L, 1);
u8 prob = getintfield_default(L, -1, "prob", MTSCHEM_PROB_ALWAYS);
probability_list.push_back(std::make_pair(pos, prob));
prob_list.push_back(std::make_pair(pos, prob));
}
lua_pop(L, 1);
}
}
dschem.filename = std::string(lua_tostring(L, 4));
std::vector<std::pair<s16, u8> > slice_prob_list;
if (lua_istable(L, 5)) {
lua_pushnil(L);
while (lua_next(L, 5)) {
if (lua_istable(L, -1)) {
s16 ypos = getintfield_default(L, -1, "ypos", 0);
u8 prob = getintfield_default(L, -1, "prob", MTSCHEM_PROB_ALWAYS);
slice_prob_list.push_back(std::make_pair(ypos, prob));
}
lua_pop(L, 1);
}
}
const char *s = lua_tostring(L, 4);
dschem.filename = std::string(s ? s : "");
if (!dschem.getSchematicFromMap(map, p1, p2)) {
errorstream << "create_schematic: failed to get schematic "
@ -500,7 +515,7 @@ int ModApiMapgen::l_create_schematic(lua_State *L)
return 0;
}
dschem.applyProbabilities(&probability_list, p1);
dschem.applyProbabilities(p1, &prob_list, &slice_prob_list);
dschem.saveSchematicFile(ndef);
actionstream << "create_schematic: saved schematic file '"