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-rw-r--r--src/mapgen/mapgen_fractal.cpp103
-rw-r--r--src/mapgen/mapgen_fractal.h13
2 files changed, 69 insertions, 47 deletions
diff --git a/src/mapgen/mapgen_fractal.cpp b/src/mapgen/mapgen_fractal.cpp
index 8dcff726f..933958587 100644
--- a/src/mapgen/mapgen_fractal.cpp
+++ b/src/mapgen/mapgen_fractal.cpp
@@ -1,7 +1,7 @@
/*
Minetest
-Copyright (C) 2015-2018 paramat
-Copyright (C) 2015-2018 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
+Copyright (C) 2015-2019 paramat
+Copyright (C) 2015-2016 kwolekr, Ryan Kwolek
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
@@ -41,7 +41,8 @@ with this program; if not, write to the Free Software Foundation, Inc.,
FlagDesc flagdesc_mapgen_fractal[] = {
- {NULL, 0}
+ {"terrain", MGFRACTAL_TERRAIN},
+ {NULL, 0}
};
///////////////////////////////////////////////////////////////////////////////////////
@@ -66,13 +67,17 @@ MapgenFractal::MapgenFractal(MapgenFractalParams *params, EmergeManager *emerge)
julia_z = params->julia_z;
julia_w = params->julia_w;
- //// 2D terrain noise
- noise_seabed = new Noise(&params->np_seabed, seed, csize.X, csize.Z);
+ //// 2D noise
+ if (spflags & MGFRACTAL_TERRAIN)
+ noise_seabed = new Noise(&params->np_seabed, seed, csize.X, csize.Z);
+
noise_filler_depth = new Noise(&params->np_filler_depth, seed, csize.X, csize.Z);
+ //// 3D noise
+ MapgenBasic::np_dungeons = params->np_dungeons;
+ // Overgeneration to node_min.Y - 1
MapgenBasic::np_cave1 = params->np_cave1;
MapgenBasic::np_cave2 = params->np_cave2;
- MapgenBasic::np_dungeons = params->np_dungeons;
formula = fractal / 2 + fractal % 2;
julia = fractal % 2 == 0;
@@ -81,7 +86,9 @@ MapgenFractal::MapgenFractal(MapgenFractalParams *params, EmergeManager *emerge)
MapgenFractal::~MapgenFractal()
{
- delete noise_seabed;
+ if (noise_seabed)
+ delete noise_seabed;
+
delete noise_filler_depth;
}
@@ -153,21 +160,25 @@ void MapgenFractalParams::writeParams(Settings *settings) const
int MapgenFractal::getSpawnLevelAtPoint(v2s16 p)
{
- bool solid_below = false; // Dry solid node is present below to spawn on
- u8 air_count = 0; // Consecutive air nodes above the dry solid node
- s16 seabed_level = NoisePerlin2D(&noise_seabed->np, p.X, p.Y, seed);
- // Seabed can rise above water_level or might be raised to create dry land
- s16 search_start = MYMAX(seabed_level, water_level + 1);
- if (seabed_level > water_level)
- solid_below = true;
-
- for (s16 y = search_start; y <= search_start + 128; y++) {
- if (getFractalAtPoint(p.X, y, p.Y)) { // Fractal node
+ bool solid_below = false; // Fractal node is present below to spawn on
+ u8 air_count = 0; // Consecutive air nodes above a fractal node
+ s16 search_start = 0; // No terrain search start
+
+ // If terrain present, don't start search below terrain or water level
+ if (noise_seabed) {
+ s16 seabed_level = NoisePerlin2D(&noise_seabed->np, p.X, p.Y, seed);
+ search_start = MYMAX(search_start, MYMAX(seabed_level, water_level));
+ }
+
+ for (s16 y = search_start; y <= search_start + 4096; y++) {
+ if (getFractalAtPoint(p.X, y, p.Y)) {
+ // Fractal node
solid_below = true;
air_count = 0;
- } else if (solid_below) { // Air above solid node
+ } else if (solid_below) {
+ // Air above fractal node
air_count++;
- // 3 to account for snowblock dust
+ // 3 and -2 to account for biome dust nodes
if (air_count == 3)
return y - 2;
}
@@ -189,10 +200,11 @@ void MapgenFractal::makeChunk(BlockMakeData *data)
data->blockpos_requested.Y <= data->blockpos_max.Y &&
data->blockpos_requested.Z <= data->blockpos_max.Z);
+ //TimeTaker t("makeChunk");
+
this->generating = true;
- this->vm = data->vmanip;
+ this->vm = data->vmanip;
this->ndef = data->nodedef;
- //TimeTaker t("makeChunk");
v3s16 blockpos_min = data->blockpos_min;
v3s16 blockpos_max = data->blockpos_max;
@@ -203,7 +215,7 @@ void MapgenFractal::makeChunk(BlockMakeData *data)
blockseed = getBlockSeed2(full_node_min, seed);
- // Generate base terrain, mountains, and ridges with initial heightmaps
+ // Generate fractal and optional terrain
s16 stone_surface_max_y = generateTerrain();
// Create heightmap
@@ -215,16 +227,16 @@ void MapgenFractal::makeChunk(BlockMakeData *data)
generateBiomes();
}
+ // Generate tunnels and randomwalk caves
if (flags & MG_CAVES) {
- // Generate tunnels
generateCavesNoiseIntersection(stone_surface_max_y);
- // Generate large randomwalk caves
generateCavesRandomWalk(stone_surface_max_y, large_cave_depth);
}
// Generate the registered ores
m_emerge->oremgr->placeAllOres(this, blockseed, node_min, node_max);
+ // Generate dungeons
if ((flags & MG_DUNGEONS) && full_node_min.Y >= dungeon_ymin &&
full_node_max.Y <= dungeon_ymax)
generateDungeons(stone_surface_max_y);
@@ -237,18 +249,18 @@ void MapgenFractal::makeChunk(BlockMakeData *data)
if (flags & MG_BIOMES)
dustTopNodes();
- //printf("makeChunk: %dms\n", t.stop());
-
- updateLiquid(&data->transforming_liquid, full_node_min, full_node_max);
+ // Update liquids
+ if (spflags & MGFRACTAL_TERRAIN)
+ updateLiquid(&data->transforming_liquid, full_node_min, full_node_max);
+ // Calculate lighting
if (flags & MG_LIGHT)
calcLighting(node_min - v3s16(0, 1, 0), node_max + v3s16(0, 1, 0),
full_node_min, full_node_max);
- //setLighting(node_min - v3s16(1, 0, 1) * MAP_BLOCKSIZE,
- // node_max + v3s16(1, 0, 1) * MAP_BLOCKSIZE, 0xFF);
-
this->generating = false;
+
+ //printf("makeChunk: %lums\n", t.stop());
}
@@ -391,24 +403,29 @@ s16 MapgenFractal::generateTerrain()
s16 stone_surface_max_y = -MAX_MAP_GENERATION_LIMIT;
u32 index2d = 0;
- noise_seabed->perlinMap2D(node_min.X, node_min.Z);
+ if (noise_seabed)
+ noise_seabed->perlinMap2D(node_min.X, node_min.Z);
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 vi = vm->m_area.index(node_min.X, y, z);
for (s16 x = node_min.X; x <= node_max.X; x++, vi++, index2d++) {
- if (vm->m_data[vi].getContent() == CONTENT_IGNORE) {
- s16 seabed_height = noise_seabed->result[index2d];
-
- if (y <= seabed_height || getFractalAtPoint(x, y, z)) {
- vm->m_data[vi] = n_stone;
- if (y > stone_surface_max_y)
- stone_surface_max_y = y;
- } else if (y <= water_level) {
- vm->m_data[vi] = n_water;
- } else {
- vm->m_data[vi] = n_air;
- }
+ if (vm->m_data[vi].getContent() != CONTENT_IGNORE)
+ continue;
+
+ s16 seabed_height;
+ if (noise_seabed)
+ seabed_height = noise_seabed->result[index2d];
+
+ if (((spflags & MGFRACTAL_TERRAIN) && y <= seabed_height) ||
+ getFractalAtPoint(x, y, z)) {
+ vm->m_data[vi] = n_stone;
+ if (y > stone_surface_max_y)
+ stone_surface_max_y = y;
+ } else if ((spflags & MGFRACTAL_TERRAIN) && y <= water_level) {
+ vm->m_data[vi] = n_water;
+ } else {
+ vm->m_data[vi] = n_air;
}
}
index2d -= ystride;
diff --git a/src/mapgen/mapgen_fractal.h b/src/mapgen/mapgen_fractal.h
index 8a8cf0c75..82622d4d9 100644
--- a/src/mapgen/mapgen_fractal.h
+++ b/src/mapgen/mapgen_fractal.h
@@ -1,7 +1,7 @@
/*
Minetest
-Copyright (C) 2015-2018 paramat
-Copyright (C) 2015-2018 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
+Copyright (C) 2015-2019 paramat
+Copyright (C) 2015-2016 kwolekr, Ryan Kwolek
Fractal formulas from http://www.bugman123.com/Hypercomplex/index.html
by Paul Nylander, and from http://www.fractalforums.com, thank you.
@@ -25,13 +25,17 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#include "mapgen.h"
+///////////// Mapgen Fractal flags
+#define MGFRACTAL_TERRAIN 0x01
+
class BiomeManager;
extern FlagDesc flagdesc_mapgen_fractal[];
+
struct MapgenFractalParams : public MapgenParams
{
- u32 spflags = 0;
+ u32 spflags = MGFRACTAL_TERRAIN;
float cave_width = 0.09f;
s16 large_cave_depth = -33;
s16 lava_depth = -256;
@@ -60,6 +64,7 @@ struct MapgenFractalParams : public MapgenParams
void writeParams(Settings *settings) const;
};
+
class MapgenFractal : public MapgenBasic
{
public:
@@ -89,5 +94,5 @@ private:
float julia_y;
float julia_z;
float julia_w;
- Noise *noise_seabed;
+ Noise *noise_seabed = nullptr;
};
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 02:35:59 +0000