///////////////////////////////////////////////////////////////////////////////////////
-MapgenFlat::MapgenFlat(int mapgenid, MapgenParams *params, EmergeManager *emerge)
- : Mapgen(mapgenid, params, emerge)
+MapgenFlat::MapgenFlat(int mapgenid, MapgenFlatParams *params, EmergeManager *emerge)
+ : MapgenBasic(mapgenid, params, emerge)
{
- this->m_emerge = emerge;
- this->bmgr = emerge->biomemgr;
-
- //// amount of elements to skip for the next index
- //// for noise/height/biome maps (not vmanip)
- this->ystride = csize.X;
- this->zstride = csize.X * (csize.Y + 2);
-
- this->biomemap = new u8[csize.X * csize.Z];
- this->heightmap = new s16[csize.X * csize.Z];
- this->heatmap = NULL;
- this->humidmap = NULL;
-
- MapgenFlatParams *sp = (MapgenFlatParams *)params->sparams;
- this->spflags = sp->spflags;
-
- this->ground_level = sp->ground_level;
- this->large_cave_depth = sp->large_cave_depth;
- this->lake_threshold = sp->lake_threshold;
- this->lake_steepness = sp->lake_steepness;
- this->hill_threshold = sp->hill_threshold;
- this->hill_steepness = sp->hill_steepness;
+ this->spflags = params->spflags;
+ this->ground_level = params->ground_level;
+ this->large_cave_depth = params->large_cave_depth;
+ this->cave_width = params->cave_width;
+ this->lake_threshold = params->lake_threshold;
+ this->lake_steepness = params->lake_steepness;
+ this->hill_threshold = params->hill_threshold;
+ this->hill_steepness = params->hill_steepness;
//// 2D noise
- noise_terrain = new Noise(&sp->np_terrain, seed, csize.X, csize.Z);
- noise_filler_depth = new Noise(&sp->np_filler_depth, seed, csize.X, csize.Z);
-
- //// 3D noise
- noise_cave1 = new Noise(&sp->np_cave1, seed, csize.X, csize.Y + 2, csize.Z);
- noise_cave2 = new Noise(&sp->np_cave2, seed, csize.X, csize.Y + 2, csize.Z);
-
- //// Biome noise
- noise_heat = new Noise(¶ms->np_biome_heat, seed, csize.X, csize.Z);
- noise_humidity = new Noise(¶ms->np_biome_humidity, seed, csize.X, csize.Z);
- noise_heat_blend = new Noise(¶ms->np_biome_heat_blend, seed, csize.X, csize.Z);
- noise_humidity_blend = new Noise(¶ms->np_biome_humidity_blend, seed, csize.X, csize.Z);
-
- //// Resolve nodes to be used
- INodeDefManager *ndef = emerge->ndef;
-
- c_stone = ndef->getId("mapgen_stone");
- c_water_source = ndef->getId("mapgen_water_source");
- c_lava_source = ndef->getId("mapgen_lava_source");
- c_desert_stone = ndef->getId("mapgen_desert_stone");
- c_ice = ndef->getId("mapgen_ice");
- c_sandstone = ndef->getId("mapgen_sandstone");
-
- c_cobble = ndef->getId("mapgen_cobble");
- c_stair_cobble = ndef->getId("mapgen_stair_cobble");
- c_mossycobble = ndef->getId("mapgen_mossycobble");
- c_sandstonebrick = ndef->getId("mapgen_sandstonebrick");
- c_stair_sandstonebrick = ndef->getId("mapgen_stair_sandstonebrick");
-
- if (c_ice == CONTENT_IGNORE)
- c_ice = CONTENT_AIR;
- if (c_mossycobble == CONTENT_IGNORE)
- c_mossycobble = c_cobble;
- if (c_stair_cobble == CONTENT_IGNORE)
- c_stair_cobble = c_cobble;
- if (c_sandstonebrick == CONTENT_IGNORE)
- c_sandstonebrick = c_sandstone;
- if (c_stair_sandstonebrick == CONTENT_IGNORE)
- c_stair_sandstonebrick = c_sandstone;
+ noise_terrain = new Noise(¶ms->np_terrain, seed, csize.X, csize.Z);
+ noise_filler_depth = new Noise(¶ms->np_filler_depth, seed, csize.X, csize.Z);
+
+ MapgenBasic::np_cave1 = params->np_cave1;
+ MapgenBasic::np_cave2 = params->np_cave2;
}
{
delete noise_terrain;
delete noise_filler_depth;
- delete noise_cave1;
- delete noise_cave2;
-
- delete noise_heat;
- delete noise_humidity;
- delete noise_heat_blend;
- delete noise_humidity_blend;
-
- delete[] heightmap;
- delete[] biomemap;
}
MapgenFlatParams::MapgenFlatParams()
{
- spflags = 0;
-
- ground_level = 8;
+ spflags = 0;
+ ground_level = 8;
large_cave_depth = -33;
- lake_threshold = -0.45;
- lake_steepness = 48.0;
- hill_threshold = 0.45;
- hill_steepness = 64.0;
+ cave_width = 0.2;
+ lake_threshold = -0.45;
+ lake_steepness = 48.0;
+ hill_threshold = 0.45;
+ hill_steepness = 64.0;
np_terrain = NoiseParams(0, 1, v3f(600, 600, 600), 7244, 5, 0.6, 2.0);
np_filler_depth = NoiseParams(0, 1.2, v3f(150, 150, 150), 261, 3, 0.7, 2.0);
- np_cave1 = NoiseParams(0, 12, v3f(96, 96, 96), 52534, 4, 0.5, 2.0);
- np_cave2 = NoiseParams(0, 12, v3f(96, 96, 96), 10325, 4, 0.5, 2.0);
+ np_cave1 = NoiseParams(0, 12, v3f(61, 61, 61), 52534, 3, 0.5, 2.0);
+ np_cave2 = NoiseParams(0, 12, v3f(67, 67, 67), 10325, 3, 0.5, 2.0);
}
void MapgenFlatParams::readParams(const Settings *settings)
{
- settings->getFlagStrNoEx("mgflat_spflags", spflags, flagdesc_mapgen_flat);
-
+ settings->getFlagStrNoEx("mgflat_spflags", spflags, flagdesc_mapgen_flat);
settings->getS16NoEx("mgflat_ground_level", ground_level);
settings->getS16NoEx("mgflat_large_cave_depth", large_cave_depth);
+ settings->getFloatNoEx("mgflat_cave_width", cave_width);
settings->getFloatNoEx("mgflat_lake_threshold", lake_threshold);
settings->getFloatNoEx("mgflat_lake_steepness", lake_steepness);
settings->getFloatNoEx("mgflat_hill_threshold", hill_threshold);
void MapgenFlatParams::writeParams(Settings *settings) const
{
- settings->setFlagStr("mgflat_spflags", spflags, flagdesc_mapgen_flat, U32_MAX);
-
+ settings->setFlagStr("mgflat_spflags", spflags, flagdesc_mapgen_flat, U32_MAX);
settings->setS16("mgflat_ground_level", ground_level);
settings->setS16("mgflat_large_cave_depth", large_cave_depth);
+ settings->setFloat("mgflat_cave_width", cave_width);
settings->setFloat("mgflat_lake_threshold", lake_threshold);
settings->setFloat("mgflat_lake_steepness", lake_steepness);
settings->setFloat("mgflat_hill_threshold", hill_threshold);
/////////////////////////////////////////////////////////////////
-int MapgenFlat::getGroundLevelAtPoint(v2s16 p)
+int MapgenFlat::getSpawnLevelAtPoint(v2s16 p)
{
+ s16 level_at_point = ground_level;
float n_terrain = NoisePerlin2D(&noise_terrain->np, p.X, p.Y, seed);
+
if ((spflags & MGFLAT_LAKES) && n_terrain < lake_threshold) {
- s16 depress = (lake_threshold - n_terrain) * lake_steepness;
- return ground_level - depress;
+ level_at_point = ground_level -
+ (lake_threshold - n_terrain) * lake_steepness;
} else if ((spflags & MGFLAT_HILLS) && n_terrain > hill_threshold) {
- s16 rise = (n_terrain - hill_threshold) * hill_steepness;
- return ground_level + rise;
- } else {
- return ground_level;
+ level_at_point = ground_level +
+ (n_terrain - hill_threshold) * hill_steepness;
}
+
+ if (ground_level < water_level) // Ocean world, allow spawn in water
+ return MYMAX(level_at_point, water_level);
+ else if (level_at_point > water_level)
+ return level_at_point; // Spawn on land
+ else
+ return MAX_MAP_GENERATION_LIMIT; // Unsuitable spawn point
}
blockseed = getBlockSeed2(full_node_min, seed);
- // Make some noise
- calculateNoise();
-
// Generate base terrain, mountains, and ridges with initial heightmaps
s16 stone_surface_max_y = generateTerrain();
// Create heightmap
updateHeightmap(node_min, node_max);
- // Create biomemap at heightmap surface
- bmgr->calcBiomes(csize.X, csize.Z, noise_heat->result,
- noise_humidity->result, heightmap, biomemap);
-
- // Actually place the biome-specific nodes
- MgStoneType stone_type = generateBiomes(noise_heat->result, noise_humidity->result);
+ // Init biome generator, place biome-specific nodes, and build biomemap
+ biomegen->calcBiomeNoise(node_min);
+ MgStoneType stone_type = generateBiomes();
if (flags & MG_CAVES)
- generateCaves(stone_surface_max_y);
-
- if ((flags & MG_DUNGEONS) && (stone_surface_max_y >= node_min.Y)) {
- DungeonParams dp;
-
- dp.np_rarity = nparams_dungeon_rarity;
- dp.np_density = nparams_dungeon_density;
- dp.np_wetness = nparams_dungeon_wetness;
- dp.c_water = c_water_source;
- if (stone_type == STONE) {
- dp.c_cobble = c_cobble;
- dp.c_moss = c_mossycobble;
- dp.c_stair = c_stair_cobble;
-
- dp.diagonal_dirs = false;
- dp.mossratio = 3.0;
- dp.holesize = v3s16(1, 2, 1);
- dp.roomsize = v3s16(0, 0, 0);
- dp.notifytype = GENNOTIFY_DUNGEON;
- } else if (stone_type == DESERT_STONE) {
- dp.c_cobble = c_desert_stone;
- dp.c_moss = c_desert_stone;
- dp.c_stair = c_desert_stone;
-
- dp.diagonal_dirs = true;
- dp.mossratio = 0.0;
- dp.holesize = v3s16(2, 3, 2);
- dp.roomsize = v3s16(2, 5, 2);
- dp.notifytype = GENNOTIFY_TEMPLE;
- } else if (stone_type == SANDSTONE) {
- dp.c_cobble = c_sandstonebrick;
- dp.c_moss = c_sandstonebrick;
- dp.c_stair = c_sandstonebrick;
-
- dp.diagonal_dirs = false;
- dp.mossratio = 0.0;
- dp.holesize = v3s16(2, 2, 2);
- dp.roomsize = v3s16(2, 0, 2);
- dp.notifytype = GENNOTIFY_DUNGEON;
- }
+ generateCaves(stone_surface_max_y, large_cave_depth);
- DungeonGen dgen(this, &dp);
- dgen.generate(blockseed, full_node_min, full_node_max);
- }
+ if (flags & MG_DUNGEONS)
+ generateDungeons(stone_surface_max_y, stone_type);
// Generate the registered decorations
if (flags & MG_DECORATIONS)
}
-void MapgenFlat::calculateNoise()
-{
- //TimeTaker t("calculateNoise", NULL, PRECISION_MICRO);
- int x = node_min.X;
- int y = node_min.Y - 1;
- int z = node_min.Z;
-
- if ((spflags & MGFLAT_LAKES) || (spflags & MGFLAT_HILLS))
- noise_terrain->perlinMap2D(x, z);
-
- noise_filler_depth->perlinMap2D(x, z);
-
- if (flags & MG_CAVES) {
- noise_cave1->perlinMap3D(x, y, z);
- noise_cave2->perlinMap3D(x, y, z);
- }
-
- noise_heat->perlinMap2D(x, z);
- noise_humidity->perlinMap2D(x, z);
- noise_heat_blend->perlinMap2D(x, z);
- noise_humidity_blend->perlinMap2D(x, z);
-
- for (s32 i = 0; i < csize.X * csize.Z; i++) {
- noise_heat->result[i] += noise_heat_blend->result[i];
- noise_humidity->result[i] += noise_humidity_blend->result[i];
- }
-
- heatmap = noise_heat->result;
- humidmap = noise_humidity->result;
- //printf("calculateNoise: %dus\n", t.stop());
-}
-
-
s16 MapgenFlat::generateTerrain()
{
MapNode n_air(CONTENT_AIR);
s16 stone_surface_max_y = -MAX_MAP_GENERATION_LIMIT;
u32 ni2d = 0;
+ bool use_noise = (spflags & MGFLAT_LAKES) || (spflags & MGFLAT_HILLS);
+ if (use_noise)
+ noise_terrain->perlinMap2D(node_min.X, node_min.Z);
+
for (s16 z = node_min.Z; z <= node_max.Z; z++)
for (s16 x = node_min.X; x <= node_max.X; x++, ni2d++) {
s16 stone_level = ground_level;
- float n_terrain = 0.0f;
-
- if ((spflags & MGFLAT_LAKES) || (spflags & MGFLAT_HILLS))
- n_terrain = noise_terrain->result[ni2d];
+ float n_terrain = use_noise ? noise_terrain->result[ni2d] : 0.0f;
if ((spflags & MGFLAT_LAKES) && n_terrain < lake_threshold) {
s16 depress = (lake_threshold - n_terrain) * lake_steepness;
return stone_surface_max_y;
}
-
-
-MgStoneType MapgenFlat::generateBiomes(float *heat_map, float *humidity_map)
-{
- v3s16 em = vm->m_area.getExtent();
- u32 index = 0;
- MgStoneType stone_type = STONE;
-
- for (s16 z = node_min.Z; z <= node_max.Z; z++)
- for (s16 x = node_min.X; x <= node_max.X; x++, index++) {
- Biome *biome = NULL;
- u16 depth_top = 0;
- u16 base_filler = 0;
- u16 depth_water_top = 0;
- u32 vi = vm->m_area.index(x, node_max.Y, z);
-
- // Check node at base of mapchunk above, either a node of a previously
- // generated mapchunk or if not, a node of overgenerated base terrain.
- content_t c_above = vm->m_data[vi + em.X].getContent();
- bool air_above = c_above == CONTENT_AIR;
- bool water_above = c_above == c_water_source;
-
- // If there is air or water above enable top/filler placement, otherwise force
- // nplaced to stone level by setting a number exceeding any possible filler depth.
- u16 nplaced = (air_above || water_above) ? 0 : U16_MAX;
-
-
- for (s16 y = node_max.Y; y >= node_min.Y; y--) {
- content_t c = vm->m_data[vi].getContent();
-
- // Biome is recalculated each time an upper surface is detected while
- // working down a column. The selected biome then remains in effect for
- // all nodes below until the next surface and biome recalculation.
- // Biome is recalculated:
- // 1. At the surface of stone below air or water.
- // 2. At the surface of water below air.
- // 3. When stone or water is detected but biome has not yet been calculated.
- if ((c == c_stone && (air_above || water_above || !biome)) ||
- (c == c_water_source && (air_above || !biome))) {
- biome = bmgr->getBiome(heat_map[index], humidity_map[index], y);
- depth_top = biome->depth_top;
- base_filler = MYMAX(depth_top + biome->depth_filler
- + noise_filler_depth->result[index], 0);
- depth_water_top = biome->depth_water_top;
-
- // Detect stone type for dungeons during every biome calculation.
- // This is more efficient than detecting per-node and will not
- // miss any desert stone or sandstone biomes.
- if (biome->c_stone == c_desert_stone)
- stone_type = DESERT_STONE;
- else if (biome->c_stone == c_sandstone)
- stone_type = SANDSTONE;
- }
-
- if (c == c_stone) {
- content_t c_below = vm->m_data[vi - em.X].getContent();
-
- // If the node below isn't solid, make this node stone, so that
- // any top/filler nodes above are structurally supported.
- // This is done by aborting the cycle of top/filler placement
- // immediately by forcing nplaced to stone level.
- if (c_below == CONTENT_AIR || c_below == c_water_source)
- nplaced = U16_MAX;
-
- if (nplaced < depth_top) {
- vm->m_data[vi] = MapNode(biome->c_top);
- nplaced++;
- } else if (nplaced < base_filler) {
- vm->m_data[vi] = MapNode(biome->c_filler);
- nplaced++;
- } else {
- vm->m_data[vi] = MapNode(biome->c_stone);
- }
-
- air_above = false;
- water_above = false;
- } else if (c == c_water_source) {
- vm->m_data[vi] = MapNode((y > (s32)(water_level - depth_water_top)) ?
- biome->c_water_top : biome->c_water);
- nplaced = 0; // Enable top/filler placement for next surface
- air_above = false;
- water_above = true;
- } else if (c == CONTENT_AIR) {
- nplaced = 0; // Enable top/filler placement for next surface
- air_above = true;
- water_above = false;
- } else { // Possible various nodes overgenerated from neighbouring mapchunks
- nplaced = U16_MAX; // Disable top/filler placement
- air_above = false;
- water_above = false;
- }
-
- vm->m_area.add_y(em, vi, -1);
- }
- }
-
- return stone_type;
-}
-
-
-void MapgenFlat::dustTopNodes()
-{
- if (node_max.Y < water_level)
- return;
-
- v3s16 em = vm->m_area.getExtent();
- u32 index = 0;
-
- for (s16 z = node_min.Z; z <= node_max.Z; z++)
- for (s16 x = node_min.X; x <= node_max.X; x++, index++) {
- Biome *biome = (Biome *)bmgr->getRaw(biomemap[index]);
-
- if (biome->c_dust == CONTENT_IGNORE)
- continue;
-
- u32 vi = vm->m_area.index(x, full_node_max.Y, z);
- content_t c_full_max = vm->m_data[vi].getContent();
- s16 y_start;
-
- if (c_full_max == CONTENT_AIR) {
- y_start = full_node_max.Y - 1;
- } else if (c_full_max == CONTENT_IGNORE) {
- vi = vm->m_area.index(x, node_max.Y + 1, z);
- content_t c_max = vm->m_data[vi].getContent();
-
- if (c_max == CONTENT_AIR)
- y_start = node_max.Y;
- else
- continue;
- } else {
- continue;
- }
-
- vi = vm->m_area.index(x, y_start, z);
- for (s16 y = y_start; y >= node_min.Y - 1; y--) {
- if (vm->m_data[vi].getContent() != CONTENT_AIR)
- break;
-
- vm->m_area.add_y(em, vi, -1);
- }
-
- content_t c = vm->m_data[vi].getContent();
- if (!ndef->get(c).buildable_to && c != CONTENT_IGNORE && c != biome->c_dust) {
- vm->m_area.add_y(em, vi, 1);
- vm->m_data[vi] = MapNode(biome->c_dust);
- }
- }
-}
-
-
-void MapgenFlat::generateCaves(s16 max_stone_y)
-{
- if (max_stone_y >= node_min.Y) {
- v3s16 em = vm->m_area.getExtent();
- u32 index2d = 0;
- u32 index3d;
-
- for (s16 z = node_min.Z; z <= node_max.Z; z++)
- for (s16 x = node_min.X; x <= node_max.X; x++, index2d++) {
- bool open = false; // Is column open to overground
- u32 vi = vm->m_area.index(x, node_max.Y + 1, z);
- index3d = (z - node_min.Z) * zstride + (csize.Y + 1) * ystride +
- (x - node_min.X);
- // Biome of column
- Biome *biome = (Biome *)bmgr->getRaw(biomemap[index2d]);
-
- for (s16 y = node_max.Y + 1; y >= node_min.Y - 1;
- y--, index3d -= ystride, vm->m_area.add_y(em, vi, -1)) {
- content_t c = vm->m_data[vi].getContent();
- if (c == CONTENT_AIR || c == biome->c_water_top ||
- c == biome->c_water) {
- open = true;
- continue;
- }
- // Ground
- float d1 = contour(noise_cave1->result[index3d]);
- float d2 = contour(noise_cave2->result[index3d]);
- if (d1 * d2 > 0.3f && ndef->get(c).is_ground_content) {
- // In tunnel and ground content, excavate
- vm->m_data[vi] = MapNode(CONTENT_AIR);
- } else if (open && (c == biome->c_filler || c == biome->c_stone)) {
- // Tunnel entrance floor
- vm->m_data[vi] = MapNode(biome->c_top);
- open = false;
- } else {
- open = false;
- }
- }
- }
- }
-
- if (node_max.Y > large_cave_depth)
- return;
-
- PseudoRandom ps(blockseed + 21343);
- u32 bruises_count = ps.range(0, 2);
- for (u32 i = 0; i < bruises_count; i++) {
- CaveV5 cave(this, &ps);
- cave.makeCave(node_min, node_max, max_stone_y);
- }
-}
projects / minetest.git / blobdiff