Merge 0cb84dfe70 into 274d8a7c65

builtin/game/features.lua

@@ -51,6 +51,7 @@ core.features = {
 	on_timer_four_args = true,
 	particlespawner_exclude_player = true,
 	generate_decorations_biomes = true,
+	chunksize_vector = true,
 }
 
 function core.has_feature(arg)

doc/lua_api.md

@@ -5849,6 +5849,8 @@ Utilities
       particlespawner_exclude_player = true,
       -- core.generate_decorations() supports `use_mapgen_biomes` parameter (5.14.0)
       generate_decorations_biomes = true,
+      -- 'chunksize' mapgen setting can be a vector, instead of a single number (5.15.0)
+      chunksize_vector = true,
   }
   ```
 
@@ -6704,7 +6706,7 @@ Environment access
       in that order.
     * `mapgen_limit` is an optional number. If it is absent, its value is that
       of the *active* mapgen setting `"mapgen_limit"`.
-    * `chunksize` is an optional number. If it is absent, its value is that
+    * `chunksize` is an optional number or vector. If it is absent, its value is that
       of the *active* mapgen setting `"chunksize"`.
 * `core.get_mapgen_chunksize()`
     * Returns the currently active chunksize of the mapgen, as a vector.

doc/world_format.md

@@ -249,7 +249,7 @@ Example content:
 
 # Map File Format
 
-Luanti maps consist of `MapBlock`s, chunks of 16x16x16 nodes.
+Luanti maps consist of `MapBlock`s, each holds 16x16x16 nodes.
 
 In addition to the bulk node data, `MapBlock`s stored on disk also contain
 other things.

src/emerge.cpp

@@ -190,7 +190,7 @@ void EmergeManager::initMapgens(MapgenParams *params)
 
 	mgparams = params;
 
-	v3s16 csize = v3s16(1, 1, 1) * (params->chunksize * MAP_BLOCKSIZE);
+	v3s16 csize = params->chunksize * MAP_BLOCKSIZE;
 	biomegen = biomemgr->createBiomeGen(BIOMEGEN_ORIGINAL, params->bparams, csize);
 
 	for (u32 i = 0; i != m_threads.size(); i++) {
@@ -319,11 +319,9 @@ bool EmergeManager::isBlockInQueue(v3s16 pos)
 //
 
 
-// TODO(hmmmm): Move this to ServerMap
-v3s16 EmergeManager::getContainingChunk(v3s16 blockpos, s16 chunksize)
+v3s16 EmergeManager::getContainingChunk(v3s16 blockpos, v3s16 chunksize)
 {
-	s16 coff = -chunksize / 2;
-	v3s16 chunk_offset(coff, coff, coff);
+	v3s16 chunk_offset = -chunksize / 2;
 
 	return getContainerPos(blockpos - chunk_offset, chunksize)
 		* chunksize + chunk_offset;

src/emerge.h

@@ -189,7 +189,8 @@ public:
 	int getSpawnLevelAtPoint(v2s16 p);
 	bool isBlockUnderground(v3s16 blockpos);
 
-	static v3s16 getContainingChunk(v3s16 blockpos, s16 chunksize);
+	/// @return min edge of chunk in block units
+	static v3s16 getContainingChunk(v3s16 blockpos, v3s16 chunksize);
 
 private:
 	std::vector<Mapgen *> m_mapgens;

src/map.cpp

@@ -775,12 +775,10 @@ void MMVManip::initialEmerge(v3s16 p_min, v3s16 p_max, bool load_if_inexistent)
 			(p_min*MAP_BLOCKSIZE, (p_max+1)*MAP_BLOCKSIZE-v3s16(1,1,1));
 
 	u32 size_MB = block_area_nodes.getVolume() * sizeof(MapNode) / 1000000U;
-	if(size_MB >= 1)
-	{
-		infostream<<"initialEmerge: area: ";
+	if (size_MB >= 4) {
+		infostream << "initialEmerge: area: ";
 		block_area_nodes.print(infostream);
-		infostream<<" ("<<size_MB<<"MB)";
-		infostream<<std::endl;
+		infostream << " (" << size_MB << "MB)" << std::endl;
 	}
 
 	std::map<v3s16, bool> had_blocks;

src/map_settings_manager.cpp

@@ -125,10 +125,20 @@ MapgenParams *MapSettingsManager::makeMapgenParams()
 	if (mapgen_params)
 		return mapgen_params;
 
+	MapgenParams *params = makeMapgenParamsCopy();
+	if (!params)
+		return nullptr;
+	mapgen_params = params;
+	return params;
+}
+
+MapgenParams *MapSettingsManager::makeMapgenParamsCopy() const
+{
+	// Note: can't return mapgen_params here, because we want a copy.
+
 	assert(m_map_settings);
 	assert(m_defaults);
 
-	// Now, get the mapgen type so we can create the appropriate MapgenParams
 	std::string mg_name;
 	MapgenType mgtype = getMapSetting("mg_name", &mg_name) ?
 		Mapgen::getMapgenType(mg_name) : MAPGEN_DEFAULT;
@@ -151,8 +161,5 @@ MapgenParams *MapSettingsManager::makeMapgenParams()
 	params->MapgenParams::readParams(m_map_settings.get());
 	params->readParams(m_map_settings.get());
 
-	// Hold onto our params
-	mapgen_params = params;
-
 	return params;
 }

src/map_settings_manager.h

@@ -52,7 +52,11 @@ public:
 
 	bool loadMapMeta();
 	bool saveMapMeta();
+
+	/// @brief Finalizes and creates the mapgen params
 	MapgenParams *makeMapgenParams();
+	/// @brief Creates a copy of the mapgen params without making the manager immutable
+	MapgenParams *makeMapgenParamsCopy() const;
 
 private:
 	std::string m_map_meta_path;

src/mapgen/mapgen.cpp

@@ -100,7 +100,7 @@ Mapgen::Mapgen(int mapgenid, MapgenParams *params, EmergeParams *emerge) :
 	water_level  = params->water_level;
 	mapgen_limit = params->mapgen_limit;
 	flags        = params->flags;
-	csize        = v3s16(1, 1, 1) * (params->chunksize * MAP_BLOCKSIZE);
+	csize        = params->chunksize * MAP_BLOCKSIZE;
 
 	/*
 		We are losing half our entropy by doing this, but it is necessary to
@@ -1071,10 +1071,29 @@ void MapgenParams::readParams(const Settings *settings)
 
 	settings->getS16NoEx("water_level", water_level);
 	settings->getS16NoEx("mapgen_limit", mapgen_limit);
-	settings->getS16NoEx("chunksize", chunksize);
 	settings->getFlagStrNoEx("mg_flags", flags, flagdesc_mapgen);
 
-	chunksize = rangelim(chunksize, 1, 10);
+	std::string chunksize_str;
+	settings->getNoEx("chunksize", chunksize_str);
+	if (is_number(chunksize_str)) {
+		chunksize = v3s16(stoi(chunksize_str, 1, 999));
+	} else if (auto tmp = str_to_v3f(chunksize_str); tmp.has_value()) {
+		chunksize = v3s16(
+			rangelim(tmp->X, 1, 999),
+			rangelim(tmp->Y, 1, 999),
+			rangelim(tmp->Z, 1, 999)
+		);
+	} else if (!chunksize_str.empty()) {
+		errorstream << "MapgenParams: invalid chunksize \"" << chunksize_str
+			<< "\"" << std::endl;
+	}
+	// Finally check the volume limit
+	if (u32 v = chunksize.X * chunksize.Y * chunksize.Z; v > MAX_CHUNK_VOLUME) {
+		errorstream << "MapgenParams: chunksize " << chunksize
+			<< " is too big (volume > " << MAX_CHUNK_VOLUME
+			<< "), falling back to the default." << std::endl;
+		chunksize = v3s16(5);
+	}
 
 	delete bparams;
 	bparams = BiomeManager::createBiomeParams(BIOMEGEN_ORIGINAL);
@@ -1091,9 +1110,15 @@ void MapgenParams::writeParams(Settings *settings) const
 	settings->setU64("seed", seed);
 	settings->setS16("water_level", water_level);
 	settings->setS16("mapgen_limit", mapgen_limit);
-	settings->setS16("chunksize", chunksize);
 	settings->setFlagStr("mg_flags", flags, flagdesc_mapgen);
 
+	// Write as number if cubic, for backwards-compatibility
+	if (chunksize.X == chunksize.Y && chunksize.Y == chunksize.Z) {
+		settings->setS16("chunksize", chunksize.X);
+	} else {
+		settings->setV3F("chunksize", v3f::from(chunksize));
+	}
+
 	if (bparams)
 		bparams->writeParams(settings);
 }
@@ -1101,29 +1126,14 @@ void MapgenParams::writeParams(Settings *settings) const
 
 s32 MapgenParams::getSpawnRangeMax()
 {
-	if (!m_mapgen_edges_calculated) {
-		std::pair<s16, s16> edges = get_mapgen_edges(mapgen_limit, chunksize);
-		mapgen_edge_min = edges.first;
-		mapgen_edge_max = edges.second;
-		m_mapgen_edges_calculated = true;
-	}
-
-	return MYMIN(-mapgen_edge_min, mapgen_edge_max);
+	auto [emin, emax] = get_mapgen_edges(mapgen_limit, chunksize);
+	s32 min_xz = std::max(emin.X, emin.Z), max_xz = std::min(emax.X, emax.Z);
+	return std::min(-min_xz, max_xz);
 }
 
 
-std::pair<s16, s16> get_mapgen_edges(s16 mapgen_limit, s16 chunksize)
+std::pair<v3s16, v3s16> get_mapgen_edges(s16 mapgen_limit, v3s16 chunksize)
 {
-	// Central chunk offset, in blocks
-	s16 ccoff_b = -chunksize / 2;
-	// Chunksize, in nodes
-	s32 csize_n = chunksize * MAP_BLOCKSIZE;
-	// Minp/maxp of central chunk, in nodes
-	s16 ccmin = ccoff_b * MAP_BLOCKSIZE;
-	s16 ccmax = ccmin + csize_n - 1;
-	// Fullminp/fullmaxp of central chunk, in nodes
-	s16 ccfmin = ccmin - MAP_BLOCKSIZE;
-	s16 ccfmax = ccmax + MAP_BLOCKSIZE;
 	// Effective mapgen limit, in blocks
 	// Uses same calculation as ServerMap::blockpos_over_mapgen_limit(v3s16 p)
 	s16 mapgen_limit_b = rangelim(mapgen_limit,
@@ -1131,10 +1141,29 @@ std::pair<s16, s16> get_mapgen_edges(s16 mapgen_limit, s16 chunksize)
 	// Effective mapgen limits, in nodes
 	s16 mapgen_limit_min = -mapgen_limit_b * MAP_BLOCKSIZE;
 	s16 mapgen_limit_max = (mapgen_limit_b + 1) * MAP_BLOCKSIZE - 1;
+
+	const auto &calculate = [&] (s16 cs) -> std::pair<s16, s16> {
+		// Central chunk offset, in blocks
+		s16 ccoff_b = -cs / 2;
+		// Chunksize, in nodes
+		s32 csize_n = cs * MAP_BLOCKSIZE;
+		// Minp/maxp of central chunk, in nodes
+		s16 ccmin = ccoff_b * MAP_BLOCKSIZE;
+		s16 ccmax = ccmin + csize_n - 1;
+		// Fullminp/fullmaxp of central chunk, in nodes
+		s16 ccfmin = ccmin - MAP_BLOCKSIZE;
+		s16 ccfmax = ccmax + MAP_BLOCKSIZE;
 		// Number of complete chunks from central chunk fullminp/fullmaxp
 		// to effective mapgen limits.
-	s16 numcmin = MYMAX((ccfmin - mapgen_limit_min) / csize_n, 0);
-	s16 numcmax = MYMAX((mapgen_limit_max - ccfmax) / csize_n, 0);
+		s16 numcmin = std::max((ccfmin - mapgen_limit_min) / csize_n, 0);
+		s16 numcmax = std::max((mapgen_limit_max - ccfmax) / csize_n, 0);
+		return {ccmin - numcmin * csize_n, ccmax + numcmax * csize_n};
+	};
+
 	// Mapgen edges, in nodes
-	return std::pair<s16, s16>(ccmin - numcmin * csize_n, ccmax + numcmax * csize_n);
+	v3s16 emin, emax;
+	std::tie(emin.X, emax.X) = calculate(chunksize.X);
+	std::tie(emin.Y, emax.Y) = calculate(chunksize.Y);
+	std::tie(emin.Z, emax.Z) = calculate(chunksize.Z);
+	return {emin, emax};
 }

src/mapgen/mapgen.h

@@ -111,7 +111,7 @@ struct MapgenParams {
 	virtual ~MapgenParams();
 
 	MapgenType mgtype = MAPGEN_DEFAULT;
-	s16 chunksize = 5;
+	v3s16 chunksize = v3s16(5);
 	u64 seed = 0;
 	s16 water_level = 1;
 	s16 mapgen_limit = MAX_MAP_GENERATION_LIMIT;
@@ -121,9 +121,6 @@ struct MapgenParams {
 
 	BiomeParams *bparams = nullptr;
 
-	s16 mapgen_edge_min = -MAX_MAP_GENERATION_LIMIT;
-	s16 mapgen_edge_max = MAX_MAP_GENERATION_LIMIT;
-
 	virtual void readParams(const Settings *settings);
 	virtual void writeParams(Settings *settings) const;
 	// Default settings for g_settings such as flags
@@ -131,8 +128,8 @@ struct MapgenParams {
 
 	s32 getSpawnRangeMax();
 
-private:
-	bool m_mapgen_edges_calculated = false;
+	// Mostly arbitrary limit
+	constexpr static u32 MAX_CHUNK_VOLUME = 2000;
 };
 
 
@@ -328,4 +325,4 @@ protected:
 
 // Calculate exact edges of the outermost mapchunks that are within the set
 // mapgen_limit. Returns the minimum and maximum edges in nodes in that order.
-std::pair<s16, s16> get_mapgen_edges(s16 mapgen_limit, s16 chunksize);
+std::pair<v3s16, v3s16> get_mapgen_edges(s16 mapgen_limit, v3s16 chunksize);

src/script/lua_api/l_mapgen.cpp

@@ -849,28 +849,27 @@ int ModApiMapgen::l_get_mapgen_edges(lua_State *L)
 	// MapSettingsManager::makeMapgenParams cannot be used here because it would
 	// make mapgen settings immutable from then on. Mapgen settings should stay
 	// mutable until after mod loading ends.
+	std::unique_ptr<MapgenParams> params(settingsmgr->makeMapgenParamsCopy());
 
 	s16 mapgen_limit;
 	if (lua_isnumber(L, 1)) {
 		mapgen_limit = lua_tointeger(L, 1);
 	} else {
-		std::string mapgen_limit_str;
-		settingsmgr->getMapSetting("mapgen_limit", &mapgen_limit_str);
-		mapgen_limit = stoi(mapgen_limit_str, 0, MAX_MAP_GENERATION_LIMIT);
+		mapgen_limit = params->mapgen_limit;
 	}
 
-	s16 chunksize;
+	v3s16 chunksize;
 	if (lua_isnumber(L, 2)) {
-		chunksize = lua_tointeger(L, 2);
+		chunksize = v3s16(lua_tointeger(L, 2));
+	} else if (lua_istable(L, 2)) {
+		chunksize = check_v3s16(L, 2);
 	} else {
-		std::string chunksize_str;
-		settingsmgr->getMapSetting("chunksize", &chunksize_str);
-		chunksize = stoi(chunksize_str, 1, 10);
+		chunksize = params->chunksize;
 	}
 
-	std::pair<s16, s16> edges = get_mapgen_edges(mapgen_limit, chunksize);
-	push_v3s16(L, v3s16(1, 1, 1) * edges.first);
-	push_v3s16(L, v3s16(1, 1, 1) * edges.second);
+	auto edges = get_mapgen_edges(mapgen_limit, chunksize);
+	push_v3s16(L, edges.first);
+	push_v3s16(L, edges.second);
 	return 2;
 }
 
@@ -884,12 +883,9 @@ int ModApiMapgen::l_get_mapgen_chunksize(lua_State *L)
 	// MapSettingsManager::makeMapgenParams cannot be used here because it would
 	// make mapgen settings immutable from then on. Mapgen settings should stay
 	// mutable until after mod loading ends.
+	std::unique_ptr<MapgenParams> params(settingsmgr->makeMapgenParamsCopy());
 
-	std::string chunksize_str;
-	settingsmgr->getMapSetting("chunksize", &chunksize_str);
-	s16 chunksize = stoi(chunksize_str, 1, 10);
-
-	push_v3s16(L, {chunksize, chunksize, chunksize});
+	push_v3s16(L, params->chunksize);
 	return 1;
 }
 

src/servermap.cpp

@@ -200,9 +200,9 @@ bool ServerMap::blockpos_over_mapgen_limit(v3s16 p)
 bool ServerMap::initBlockMake(v3s16 blockpos, BlockMakeData *data)
 {
 	assert(data);
-	s16 csize = getMapgenParams()->chunksize;
+	const v3s16 csize = getMapgenParams()->chunksize;
 	const v3s16 bpmin = EmergeManager::getContainingChunk(blockpos, csize);
-	const v3s16 bpmax = bpmin + v3s16(1, 1, 1) * (csize - 1);
+	const v3s16 bpmax = bpmin + csize - v3s16(1);
 
 	if (!m_chunks_in_progress.insert(bpmin).second)
 		return false;

src/unittest/test_map_settings_manager.cpp

@@ -7,7 +7,9 @@
 #include "noise.h"
 #include "settings.h"
 #include "mapgen/mapgen_v5.h"
+#include "emerge.h"
 #include "util/hashing.h"
+#include "irrlicht_changes/printing.h"
 #include "map_settings_manager.h"
 
 class TestMapSettingsManager : public TestBase {
@@ -23,6 +25,7 @@ public:
 	void testMapSettingsManager();
 	void testMapMetaSaveLoad();
 	void testMapMetaFailures();
+	void testChunks();
 };
 
 static TestMapSettingsManager g_test_instance;
@@ -32,6 +35,7 @@ void TestMapSettingsManager::runTests(IGameDef *gamedef)
 	TEST(testMapSettingsManager);
 	TEST(testMapMetaSaveLoad);
 	TEST(testMapMetaFailures);
+	TEST(testChunks);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -141,7 +145,7 @@ void TestMapSettingsManager::testMapSettingsManager()
 	// Now make our Params and see if the values are correctly sourced
 	MapgenParams *params = mgr.makeMapgenParams();
 	UASSERT(params->mgtype == MAPGEN_V5);
-	UASSERT(params->chunksize == 5);
+	UASSERT(params->chunksize == v3s16(5));
 	UASSERT(params->water_level == 15);
 	UASSERT(params->seed == 1234);
 	UASSERT((params->flags & MG_LIGHT) == 0);
@@ -246,3 +250,29 @@ void TestMapSettingsManager::testMapMetaFailures()
 		UASSERT(!mgr2.loadMapMeta());
 	}
 }
+
+
+void TestMapSettingsManager::testChunks()
+{
+	v3s16 csize(5);
+
+#define GET(x) EmergeManager::getContainingChunk(x, csize)
+	// origin chunk goes from (-2, -2, -2) -> (3, 3, 3) excl
+	UASSERTEQ(auto, GET(v3s16(-2, -2, -2)), v3s16(-2, -2, -2));
+	UASSERTEQ(auto, GET(v3s16(0, 0, 0)), v3s16(-2, -2, -2));
+	UASSERTEQ(auto, GET(v3s16(1, 1, 1)), v3s16(-2, -2, -2));
+	UASSERTEQ(auto, GET(v3s16(2, 2, 2)), v3s16(-2, -2, -2));
+	UASSERTEQ(auto, GET(v3s16(2, 3, 2)), v3s16(-2, 3, -2));
+	UASSERTEQ(auto, GET(v3s16(0, -3, 0)), v3s16(-2, -7, -2));
+
+	csize = v3s16(5, 2, 5);
+	UASSERTEQ(auto, GET(v3s16(0, 0, 0)), v3s16(-2, -1, -2));
+	UASSERTEQ(auto, GET(v3s16(0, 1, 0)), v3s16(-2, 1, -2));
+	UASSERTEQ(auto, GET(v3s16(3, 3, 3)), v3s16(3, 3, 3));
+
+	csize = v3s16(1);
+	UASSERTEQ(auto, GET(v3s16(1, 2, 3)), v3s16(1, 2, 3));
+	UASSERTEQ(auto, GET(v3s16(-3, -2, -1)), v3s16(-3, -2, -1));
+
+#undef GET
+}

src/unittest/test_mapgen.cpp

@@ -7,6 +7,7 @@
 #include "emerge.h"
 #include "mapgen/mapgen.h"
 #include "mapgen/mg_biome.h"
+#include "irrlicht_changes/printing.h"
 #include "mock_server.h"
 
 class TestMapgen : public TestBase
@@ -18,6 +19,7 @@ public:
 	void runTests(IGameDef *gamedef);
 
 	void testBiomeGen(IGameDef *gamedef);
+	void testMapgenEdges();
 };
 
 static TestMapgen g_test_instance;
@@ -37,6 +39,7 @@ namespace {
 void TestMapgen::runTests(IGameDef *gamedef)
 {
 	TEST(testBiomeGen, gamedef);
+	TEST(testMapgenEdges);
 }
 
 void TestMapgen::testBiomeGen(IGameDef *gamedef)
@@ -98,7 +101,7 @@ void TestMapgen::testBiomeGen(IGameDef *gamedef)
 			{    0, "deciduous_forest_shore", S16_MIN },
 			{ -100, "deciduous_forest_shore", S16_MIN },
 		};
-		for (const auto expected : expected_biomes) {
+		for (const auto &expected : expected_biomes) {
 			Biome *biome = biomegen->getBiomeAtIndex(
 				(1 * CSIZE.X) + 1, // index in CSIZE 2D noise map
 				v3s16(2000, expected.check_y, -1000) // absolute coordinates
@@ -123,3 +126,15 @@ void TestMapgen::testBiomeGen(IGameDef *gamedef)
 	}
 }
 
+void TestMapgen::testMapgenEdges()
+{
+	v3s16 emin, emax;
+
+	std::tie(emin, emax) = get_mapgen_edges(31007, v3s16(5));
+	UASSERTEQ(auto, emin, v3s16(-30912));
+	UASSERTEQ(auto, emax, v3s16(30927));
+
+	std::tie(emin, emax) = get_mapgen_edges(502 * MAP_BLOCKSIZE, v3s16(1, 2, 1));
+	UASSERTEQ(auto, emin, v3s16(-8016));
+	UASSERTEQ(auto, emax, v3s16(8031, 8015, 8031));
+}