From 38e62805527b774e478617d9781bde72ce2bdcb9 Mon Sep 17 00:00:00 2001 From: paramat Date: Wed, 21 Jan 2015 13:24:11 +0000 Subject: [PATCH] Mgv5: Remove blobgen. Remove crumble and wetness noises Add large pseudorandom caves below -256 De-link terrain level from water_level Cavegen: Mgv5 large cave code --- src/cavegen.cpp | 262 +++++++++++++++++++++++++++++++++++++++++++++- src/cavegen.h | 46 ++++++++ src/mapgen_v5.cpp | 76 +++----------- src/mapgen_v5.h | 11 +- 4 files changed, 322 insertions(+), 73 deletions(-) diff --git a/src/cavegen.cpp b/src/cavegen.cpp index 22bf03d1..6010780e 100644 --- a/src/cavegen.cpp +++ b/src/cavegen.cpp @@ -20,6 +20,7 @@ with this program; if not, write to the Free Software Foundation, Inc., #include "util/numeric.h" #include "map.h" #include "mapgen.h" +#include "mapgen_v5.h" #include "mapgen_v6.h" #include "mapgen_v7.h" #include "cavegen.h" @@ -279,6 +280,7 @@ void CaveV6::carveRoute(v3f vec, float f, bool randomize_xz) { ///////////////////////////////////////// Caves V7 + CaveV7::CaveV7(MapgenV7 *mg, PseudoRandom *ps, bool is_large_cave) { this->mg = mg; this->vm = mg->vm; @@ -431,7 +433,7 @@ void CaveV7::makeTunnel(bool dirswitch) { p = orpi + veci + of + rs / 2; if (p.Z >= node_min.Z && p.Z <= node_max.Z && - p.X >= node_min.X && p.X <= node_max.X) { + p.X >= node_min.X && p.X <= node_max.X) { u32 index = (p.Z - node_min.Z) * mg->ystride + (p.X - node_min.X); s16 h = mg->ridge_heightmap[index]; if (h < p.Y) @@ -442,7 +444,7 @@ void CaveV7::makeTunnel(bool dirswitch) { p = orpi + of + rs / 2; if (p.Z >= node_min.Z && p.Z <= node_max.Z && - p.X >= node_min.X && p.X <= node_max.X) { + p.X >= node_min.X && p.X <= node_max.X) { u32 index = (p.Z - node_min.Z) * mg->ystride + (p.X - node_min.X); s16 h = mg->ridge_heightmap[index]; if (h < p.Y) @@ -581,3 +583,259 @@ void CaveV7::carveRoute(v3f vec, float f, bool randomize_xz, bool is_ravine) { } } } + + +///////////////////////////////////////// Caves V5 + + +CaveV5::CaveV5(MapgenV5 *mg, PseudoRandom *ps) { + this->mg = mg; + this->vm = mg->vm; + this->ndef = mg->ndef; + this->water_level = mg->water_level; + this->ps = ps; + this->c_water_source = mg->c_water_source; + this->c_lava_source = mg->c_lava_source; + this->c_ice = mg->c_ice; + this->np_caveliquids = &nparams_caveliquids; + + dswitchint = ps->range(1, 14); + flooded = ps->range(1, 2) == 2; + + part_max_length_rs = ps->range(2, 4); + tunnel_routepoints = ps->range(5, ps->range(15, 30)); + min_tunnel_diameter = 5; + max_tunnel_diameter = ps->range(7, ps->range(8, 24)); + + large_cave_is_flat = (ps->range(0, 1) == 0); +} + + +void CaveV5::makeCave(v3s16 nmin, v3s16 nmax, int max_stone_height) { + node_min = nmin; + node_max = nmax; + main_direction = v3f(0, 0, 0); + + // Allowed route area size in nodes + ar = node_max - node_min + v3s16(1, 1, 1); + // Area starting point in nodes + of = node_min; + + // Allow a bit more + //(this should be more than the maximum radius of the tunnel) + s16 insure = 10; + s16 more = MYMAX(MAP_BLOCKSIZE - max_tunnel_diameter / 2 - insure, 1); + ar += v3s16(1,0,1) * more * 2; + of -= v3s16(1,0,1) * more; + + route_y_min = 0; + // Allow half a diameter + 7 over stone surface + route_y_max = -of.Y + max_stone_y + max_tunnel_diameter / 2 + 7; + + // Limit maximum to area + route_y_max = rangelim(route_y_max, 0, ar.Y - 1); + + s16 min = 0; + if (node_min.Y < water_level && node_max.Y > water_level) { + min = water_level - max_tunnel_diameter/3 - of.Y; + route_y_max = water_level + max_tunnel_diameter/3 - of.Y; + } + route_y_min = ps->range(min, min + max_tunnel_diameter); + route_y_min = rangelim(route_y_min, 0, route_y_max); + + s16 route_start_y_min = route_y_min; + s16 route_start_y_max = route_y_max; + + route_start_y_min = rangelim(route_start_y_min, 0, ar.Y - 1); + route_start_y_max = rangelim(route_start_y_max, route_start_y_min, ar.Y - 1); + + // Randomize starting position + orp = v3f( + (float)(ps->next() % ar.X) + 0.5, + (float)(ps->range(route_start_y_min, route_start_y_max)) + 0.5, + (float)(ps->next() % ar.Z) + 0.5 + ); + + // Add generation notify begin event + v3s16 abs_pos(of.X + orp.X, of.Y + orp.Y, of.Z + orp.Z); + GenNotifyType notifytype = GENNOTIFY_LARGECAVE_BEGIN; + mg->gennotify.addEvent(notifytype, abs_pos); + + // Generate some tunnel starting from orp + for (u16 j = 0; j < tunnel_routepoints; j++) + makeTunnel(j % dswitchint == 0); + + // Add generation notify end event + abs_pos = v3s16(of.X + orp.X, of.Y + orp.Y, of.Z + orp.Z); + notifytype = GENNOTIFY_LARGECAVE_END; + mg->gennotify.addEvent(notifytype, abs_pos); +} + + +void CaveV5::makeTunnel(bool dirswitch) { + + // Randomize size + s16 min_d = min_tunnel_diameter; + s16 max_d = max_tunnel_diameter; + rs = ps->range(min_d, max_d); + + v3s16 maxlen; + maxlen = v3s16( + rs * part_max_length_rs, + rs * part_max_length_rs / 2, + rs * part_max_length_rs + ); + + v3f vec; + // Jump downward sometimes + vec = v3f( + (float)(ps->next() % (maxlen.X * 1)) - (float)maxlen.X / 2, + (float)(ps->next() % (maxlen.Y * 1)) - (float)maxlen.Y / 2, + (float)(ps->next() % (maxlen.Z * 1)) - (float)maxlen.Z / 2 + ); + + // Do not make large caves that are above ground. + // It is only necessary to check the startpoint and endpoint. + v3s16 orpi(orp.X, orp.Y, orp.Z); + v3s16 veci(vec.X, vec.Y, vec.Z); + v3s16 p; + + p = orpi + veci + of + rs / 2; + if (p.Z >= node_min.Z && p.Z <= node_max.Z && + p.X >= node_min.X && p.X <= node_max.X) { + u32 index = (p.Z - node_min.Z) * mg->ystride + (p.X - node_min.X); + s16 h = mg->heightmap[index]; + if (h < p.Y) + return; + } else if (p.Y > water_level) { + return; // If it's not in our heightmap, use a simple heuristic + } + + p = orpi + of + rs / 2; + if (p.Z >= node_min.Z && p.Z <= node_max.Z && + p.X >= node_min.X && p.X <= node_max.X) { + u32 index = (p.Z - node_min.Z) * mg->ystride + (p.X - node_min.X); + s16 h = mg->heightmap[index]; + if (h < p.Y) + return; + } else if (p.Y > water_level) { + return; + } + + vec += main_direction; + + v3f rp = orp + vec; + if (rp.X < 0) + rp.X = 0; + else if (rp.X >= ar.X) + rp.X = ar.X - 1; + + if (rp.Y < route_y_min) + rp.Y = route_y_min; + else if (rp.Y >= route_y_max) + rp.Y = route_y_max - 1; + + if (rp.Z < 0) + rp.Z = 0; + else if (rp.Z >= ar.Z) + rp.Z = ar.Z - 1; + + vec = rp - orp; + + float veclen = vec.getLength(); + if (veclen < 0.05) + veclen = 1.0; + + // Every second section is rough + bool randomize_xz = (ps->range(1, 2) == 1); + + // Make a ravine every once in a while if it's long enough + //float xylen = vec.X * vec.X + vec.Z * vec.Z; + //disable ravines for now + bool is_ravine = false; //(xylen > 500.0) && !large_cave && (ps->range(1, 8) == 1); + + // Carve routes + for (float f = 0; f < 1.0; f += 1.0 / veclen) + carveRoute(vec, f, randomize_xz, is_ravine); + + orp = rp; +} + + +void CaveV5::carveRoute(v3f vec, float f, bool randomize_xz, bool is_ravine) { + MapNode airnode(CONTENT_AIR); + MapNode waternode(c_water_source); + MapNode lavanode(c_lava_source); + + v3s16 startp(orp.X, orp.Y, orp.Z); + startp += of; + + float nval = NoisePerlin3D(np_caveliquids, startp.X, + startp.Y, startp.Z, mg->seed); + MapNode liquidnode = nval < 0.40 ? lavanode : waternode; + + v3f fp = orp + vec * f; + fp.X += 0.1 * ps->range(-10, 10); + fp.Z += 0.1 * ps->range(-10, 10); + v3s16 cp(fp.X, fp.Y, fp.Z); + + s16 d0 = -rs/2; + s16 d1 = d0 + rs; + if (randomize_xz) { + d0 += ps->range(-1, 1); + d1 += ps->range(-1, 1); + } + + bool should_make_cave_hole = ps->range(1, 10) == 1; + + for (s16 z0 = d0; z0 <= d1; z0++) { + s16 si = rs / 2 - MYMAX(0, abs(z0) - rs / 7 - 1); + for (s16 x0 = -si - ps->range(0,1); x0 <= si - 1 + ps->range(0,1); x0++) { + s16 maxabsxz = MYMAX(abs(x0), abs(z0)); + + s16 si2 = is_ravine ? MYMIN(ps->range(25, 26), ar.Y) : + rs / 2 - MYMAX(0, maxabsxz - rs / 7 - 1); + + for (s16 y0 = -si2; y0 <= si2; y0++) { + if (large_cave_is_flat) { + // Make large caves not so tall + if (rs > 7 && abs(y0) >= rs / 3) + continue; + } + + v3s16 p(cp.X + x0, cp.Y + y0, cp.Z + z0); + p += of; + + if (!is_ravine && mg->heightmap && should_make_cave_hole && + p.X <= node_max.X && p.Z <= node_max.Z) { + int maplen = node_max.X - node_min.X + 1; + int idx = (p.Z - node_min.Z) * maplen + (p.X - node_min.X); + if (p.Y >= mg->heightmap[idx] - 2) + continue; + } + + if (vm->m_area.contains(p) == false) + continue; + + u32 i = vm->m_area.index(p); + + // Don't replace air, water, lava, or ice + content_t c = vm->m_data[i].getContent(); + if (!ndef->get(c).is_ground_content || c == CONTENT_AIR || + c == c_water_source || c == c_lava_source || c == c_ice) + continue; + + int full_ymin = node_min.Y - MAP_BLOCKSIZE; + int full_ymax = node_max.Y + MAP_BLOCKSIZE; + + if (flooded && full_ymin < water_level && full_ymax > water_level) + vm->m_data[i] = (p.Y <= water_level) ? waternode : airnode; + else if (flooded && full_ymax < water_level) + vm->m_data[i] = (p.Y < startp.Y - 4) ? liquidnode : airnode; + else + vm->m_data[i] = airnode; + } + } + } +} + diff --git a/src/cavegen.h b/src/cavegen.h index 7371df6f..0b57bf4d 100644 --- a/src/cavegen.h +++ b/src/cavegen.h @@ -22,9 +22,55 @@ with this program; if not, write to the Free Software Foundation, Inc., #define VMANIP_FLAG_CAVE VOXELFLAG_CHECKED1 +class MapgenV5; class MapgenV6; class MapgenV7; +class CaveV5 { +public: + MapgenV5 *mg; + MMVManip *vm; + INodeDefManager *ndef; + + NoiseParams *np_caveliquids; + + s16 min_tunnel_diameter; + s16 max_tunnel_diameter; + u16 tunnel_routepoints; + int dswitchint; + int part_max_length_rs; + + bool large_cave_is_flat; + bool flooded; + + s16 max_stone_y; + v3s16 node_min; + v3s16 node_max; + + v3f orp; // starting point, relative to caved space + v3s16 of; // absolute coordinates of caved space + v3s16 ar; // allowed route area + s16 rs; // tunnel radius size + v3f main_direction; + + s16 route_y_min; + s16 route_y_max; + + PseudoRandom *ps; + + content_t c_water_source; + content_t c_lava_source; + content_t c_ice; + + int water_level; + + CaveV5() {} + CaveV5(MapgenV5 *mg, PseudoRandom *ps); + void makeCave(v3s16 nmin, v3s16 nmax, int max_stone_height); + void makeTunnel(bool dirswitch); + void carveRoute(v3f vec, float f, bool randomize_xz, bool is_ravine); +}; + class CaveV6 { public: MapgenV6 *mg; diff --git a/src/mapgen_v5.cpp b/src/mapgen_v5.cpp index f7efc4e1..ed18f7d0 100644 --- a/src/mapgen_v5.cpp +++ b/src/mapgen_v5.cpp @@ -42,7 +42,6 @@ with this program; if not, write to the Free Software Foundation, Inc., FlagDesc flagdesc_mapgen_v5[] = { - {"blobs", MGV5_BLOBS}, {NULL, 0} }; @@ -73,8 +72,6 @@ MapgenV5::MapgenV5(int mapgenid, MapgenParams *params, EmergeManager *emerge) 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); noise_ground = new Noise(&sp->np_ground, seed, csize.X, csize.Y + 2, csize.Z); - noise_crumble = new Noise(&sp->np_crumble, seed, csize.X, csize.Y + 2, csize.Z); - noise_wetness = new Noise(&sp->np_wetness, seed, csize.X, csize.Y + 2, csize.Z); // Biome noise noise_heat = new Noise(¶ms->np_biome_heat, seed, csize.X, csize.Z); @@ -117,8 +114,6 @@ MapgenV5::~MapgenV5() delete noise_cave1; delete noise_cave2; delete noise_ground; - delete noise_crumble; - delete noise_wetness; delete noise_heat; delete noise_humidity; @@ -130,7 +125,7 @@ MapgenV5::~MapgenV5() MapgenV5Params::MapgenV5Params() { - spflags = MGV5_BLOBS; + spflags = 0; np_filler_depth = NoiseParams(0, 1, v3f(150, 150, 150), 261, 4, 0.7, 2.0); np_factor = NoiseParams(0, 1, v3f(250, 250, 250), 920381, 3, 0.45, 2.0); @@ -138,18 +133,11 @@ MapgenV5Params::MapgenV5Params() np_cave1 = NoiseParams(0, 12, v3f(50, 50, 50), 52534, 4, 0.5, 2.0); np_cave2 = NoiseParams(0, 12, v3f(50, 50, 50), 10325, 4, 0.5, 2.0); np_ground = NoiseParams(0, 40, v3f(80, 80, 80), 983240, 4, 0.55, 2.0, NOISE_FLAG_EASED); - np_crumble = NoiseParams(0, 1, v3f(20, 20, 20), 34413, 3, 1.3, 2.0, NOISE_FLAG_EASED); - np_wetness = NoiseParams(0, 1, v3f(40, 40, 40), 32474, 4, 1.1, 2.0); } -// Scaling the output of the noise function affects the overdrive of the -// contour function, which affects the shape of the output considerably. - -// Two original MT 0.3 parameters for non-eased noise: - //#define CAVE_NOISE_SCALE 12.0 -//#define CAVE_NOISE_THRESHOLD (1.5/CAVE_NOISE_SCALE) +//#define CAVE_NOISE_THRESHOLD (1.5/CAVE_NOISE_SCALE) = 0.125 void MapgenV5Params::readParams(Settings *settings) @@ -162,8 +150,6 @@ void MapgenV5Params::readParams(Settings *settings) settings->getNoiseParams("mgv5_np_cave1", np_cave1); settings->getNoiseParams("mgv5_np_cave2", np_cave2); settings->getNoiseParams("mgv5_np_ground", np_ground); - settings->getNoiseParams("mgv5_np_crumble", np_crumble); - settings->getNoiseParams("mgv5_np_wetness", np_wetness); } @@ -177,8 +163,6 @@ void MapgenV5Params::writeParams(Settings *settings) settings->setNoiseParams("mgv5_np_cave1", np_cave1); settings->setNoiseParams("mgv5_np_cave2", np_cave2); settings->setNoiseParams("mgv5_np_ground", np_ground); - settings->setNoiseParams("mgv5_np_crumble", np_crumble); - settings->setNoiseParams("mgv5_np_wetness", np_wetness); } @@ -195,9 +179,6 @@ int MapgenV5::getGroundLevelAtPoint(v2s16 p) s16 search_top = water_level + 15; s16 search_base = water_level; - // Use these 2 lines instead for a slower search returning highest ground level: - //s16 search_top = h + f * noise_ground->np->octaves * noise_ground->np->scale; - //s16 search_base = h - f * noise_ground->np->octaves * noise_ground->np->scale; s16 level = -31000; for (s16 y = search_top; y >= search_base; y--) { @@ -258,7 +239,7 @@ void MapgenV5::makeChunk(BlockMakeData *data) // Generate caves if ((flags & MG_CAVES) && (stone_surface_max_y >= node_min.Y)) - generateCaves(); + generateCaves(stone_surface_max_y); // Generate dungeons and desert temples if ((flags & MG_DUNGEONS) && (stone_surface_max_y >= node_min.Y)) { @@ -269,11 +250,6 @@ void MapgenV5::makeChunk(BlockMakeData *data) // Generate the registered decorations m_emerge->decomgr->placeAllDecos(this, blockseed, node_min, node_max); - // Generate underground dirt, sand, gravel and lava blobs - if (spflags & MGV5_BLOBS) { - generateBlobs(); - } - // Generate the registered ores m_emerge->oremgr->placeAllOres(this, blockseed, node_min, node_max); @@ -311,11 +287,6 @@ void MapgenV5::calculateNoise() noise_cave2->perlinMap3D(x, y, z); } - if (spflags & MGV5_BLOBS) { - noise_crumble->perlinMap3D(x, y, z); - noise_wetness->perlinMap3D(x, y, z); - } - if (node_max.Y >= water_level) { noise_filler_depth->perlinMap2D(x, z); noise_heat->perlinMap2D(x, z); @@ -326,8 +297,6 @@ void MapgenV5::calculateNoise() } -// Two original MT 0.3 functions: - //bool is_cave(u32 index) { // double d1 = contour(noise_cave1->result[index]); // double d2 = contour(noise_cave2->result[index]); @@ -363,7 +332,7 @@ int MapgenV5::generateBaseTerrain() f = 0.01; else if(f >= 1.0) f *= 1.6; - float h = water_level + noise_height->result[index2d]; + float h = noise_height->result[index2d]; if(noise_ground->result[index] * f < y - h) { if(y <= water_level) @@ -470,7 +439,7 @@ void MapgenV5::generateBiomes() } -void MapgenV5::generateCaves() +void MapgenV5::generateCaves(int max_stone_y) { u32 index = 0; u32 index2d = 0; @@ -496,36 +465,15 @@ void MapgenV5::generateCaves() } index2d = index2d + ystride; } -} + if (node_max.Y > -256) + return; -void MapgenV5::generateBlobs() -{ - u32 index = 0; - - for(s16 z=node_min.Z; z<=node_max.Z; z++) { - for(s16 y=node_min.Y - 1; y<=node_max.Y + 1; y++) { - u32 i = vm->m_area.index(node_min.X, y, z); - for(s16 x=node_min.X; x<=node_max.X; x++, i++, index++) { - content_t c = vm->m_data[i].getContent(); - if(c != c_stone) - continue; - - if(noise_crumble->result[index] > 1.3) { - if(noise_wetness->result[index] > 0.0) - vm->m_data[i] = MapNode(c_dirt); - else - vm->m_data[i] = MapNode(c_sand); - } else if(noise_crumble->result[index] > 0.7) { - if(noise_wetness->result[index] < -0.6) - vm->m_data[i] = MapNode(c_gravel); - } else if(noise_crumble->result[index] < -3.5 + - MYMIN(0.1 * - sqrt((float)MYMAX(0, -y)), 1.5)) { - vm->m_data[i] = MapNode(c_lava_source); - } - } - } + PseudoRandom ps(blockseed + 21343); + u32 bruises_count = (ps.range(1, 5) == 1) ? ps.range(1, 2) : 0; + for (u32 i = 0; i < bruises_count; i++) { + CaveV5 cave(this, &ps); + cave.makeCave(node_min, node_max, max_stone_y); } } diff --git a/src/mapgen_v5.h b/src/mapgen_v5.h index 1949bf5d..703addf6 100644 --- a/src/mapgen_v5.h +++ b/src/mapgen_v5.h @@ -23,7 +23,9 @@ with this program; if not, write to the Free Software Foundation, Inc., #include "mapgen.h" /////////////////// Mapgen V5 flags -#define MGV5_BLOBS 0x01 +//#define MGV5_ 0x01 + +class BiomeManager; extern FlagDesc flagdesc_mapgen_v5[]; @@ -36,8 +38,6 @@ struct MapgenV5Params : public MapgenSpecificParams { NoiseParams np_cave1; NoiseParams np_cave2; NoiseParams np_ground; - NoiseParams np_crumble; - NoiseParams np_wetness; MapgenV5Params(); ~MapgenV5Params() {} @@ -67,8 +67,6 @@ class MapgenV5 : public Mapgen { Noise *noise_cave1; Noise *noise_cave2; Noise *noise_ground; - Noise *noise_crumble; - Noise *noise_wetness; Noise *noise_heat; Noise *noise_humidity; @@ -96,8 +94,7 @@ class MapgenV5 : public Mapgen { void calculateNoise(); int generateBaseTerrain(); void generateBiomes(); - void generateCaves(); - void generateBlobs(); + void generateCaves(int max_stone_y); void dustTopNodes(); };