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voronoi_biome_patch
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Add tiled option.

master
David G 2019-10-17 09:42:19 -07:00
parent e710a9e351
commit 9cdea68efd
3 changed files with 106 additions and 38 deletions
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16
README.md
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@ -9,8 +9,13 @@ arranged in the standard Voronoi pattern. Heat (or temperature) on the x-axis an
on the z-axis.
![Screenshot 1](default_biomes.jpeg "Default Voronoi world")
Default Voronoi world.
![Screenshot 2](ethereal_biomes.jpeg "Ethereal Voronoi world")
Ethereal Voronoi world *(elev. approx. 15)*
![Screenshot 3](tiled_voronoi.jpeg "Tiled Voronoi world")
**NEW:** Now includes option to tile voronoi patterns indefinitely.
**This is a proof of concept that is intended for people who are experienced compiling minetest themselves.**
@ -32,8 +37,14 @@ on the z-axis.
- By default the patch creates Voronoi maps with sides of 500 nodes.
- It maps x=-250 to heat=0 and x=+250 to heat=100. The corresponding values for humidity are mapped from z=-250 to z=+250.
- This can be changed by updating the following value in the patched version of mg_biome.cpp before recompiling:
> #define W_Voronoi 500
- **NEW:** I've added an option to repeatedly tile the voronoi pattern.
- **UPDATED:** This can be changed by updating the following value in the patched version of mg_biome.cpp **before recompiling**:
> // Until this can be read in from config file, has to be set manually.
> // 0 = default biome distribution--not voronoi.
> // +n = single voronoi pattern centered at (0,0) with sides of 'n'
> // -n = tiled voronoi pattern centered at (0,0) with sides of '+n'
>
> int voronoi_biomes = 500;
**Further customizations can be done in minetest.conf:**
@ -45,6 +56,7 @@ It's more difficult when the biomes change with elevation.
- Multiple runs can be done with different base levels—carpathian and flat mapgens have easy options to do this.
- Otherwise, use different mapgens and seeds to find what works. I've used amidst-minetest, but keep in mind that the biomes that program shows will be completely overridden.
- **NEW:** Tiled voronoi option has been added, which might help this case—it gives multiple versions of each biome per world.
**License of source code: LGPL-2.1**

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128
voronoi_biomes.patch
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@ -1,74 +1,130 @@
--- mg_biome.cpp.orig 2019-09-14 09:04:44.522429758 -0700
+++ mg_biome.cpp 2019-10-06 15:31:13.478110742 -0700
--- mg_biome.orig.cpp 2019-10-15 11:21:37.604496970 -0700
+++ mg_biome.cpp 2019-10-16 16:22:08.874191603 -0700
@@ -18,6 +18,10 @@
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
+// Modified by David G (kestral246@gmail.com)
+// 2019-10-05
+// 2019-10-17
+// Hack to give Voronoi biome distribution.
+
#include "mg_biome.h"
#include "mg_decoration.h"
#include "emerge.h"
@@ -31,6 +35,8 @@
@@ -31,6 +35,12 @@
///////////////////////////////////////////////////////////////////////////////
+// Length of side of full Voronoi biome map, centered about (0,0)
+#define W_Voronoi 500.0
+// Until this can be read in from config file, has to be set manually.
+// 0 = default biome distribution--not voronoi.
+// +n = single voronoi pattern centered at (0,0) with sides of 'n'
+// -n = tiled voronoi pattern centered at (0,0) with sides of '+n'
+
+int voronoi_biomes = 500;
BiomeManager::BiomeManager(Server *server) :
ObjDefManager(server, OBJDEF_BIOME)
@@ -97,7 +103,8 @@
@@ -96,9 +106,18 @@
float BiomeManager::getHeatAtPosOriginal(v3s16 pos, NoiseParams &np_heat,
NoiseParams &np_heat_blend, u64 seed)
{
return
- return
- NoisePerlin2D(&np_heat, pos.X, pos.Z, seed) +
+ //NoisePerlin2D(&np_heat, pos.X, pos.Z, seed) +
+ (W_Voronoi/2 + pos.X) * 100/W_Voronoi +
NoisePerlin2D(&np_heat_blend, pos.X, pos.Z, seed);
- NoisePerlin2D(&np_heat_blend, pos.X, pos.Z, seed);
+ if (voronoi_biomes == 0)
+ return
+ NoisePerlin2D(&np_heat, pos.X, pos.Z, seed) +
+ NoisePerlin2D(&np_heat_blend, pos.X, pos.Z, seed);
+ else if (voronoi_biomes > 0)
+ return
+ (voronoi_biomes/2.0 + pos.X) * 100.0/voronoi_biomes +
+ NoisePerlin2D(&np_heat_blend, pos.X, pos.Z, seed);
+ else
+ return
+ fmod(fmod(-voronoi_biomes/2.0 + pos.X, -voronoi_biomes) - voronoi_biomes, -voronoi_biomes) * -100.0/voronoi_biomes +
+ NoisePerlin2D(&np_heat_blend, pos.X, pos.Z, seed);
}
@@ -107,7 +114,8 @@
@@ -106,9 +125,18 @@
float BiomeManager::getHumidityAtPosOriginal(v3s16 pos, NoiseParams &np_humidity,
NoiseParams &np_humidity_blend, u64 seed)
{
return
- return
- NoisePerlin2D(&np_humidity, pos.X, pos.Z, seed) +
+ //NoisePerlin2D(&np_humidity, pos.X, pos.Z, seed) +
+ (W_Voronoi/2 + pos.Z) * 100/W_Voronoi +
NoisePerlin2D(&np_humidity_blend, pos.X, pos.Z, seed);
- NoisePerlin2D(&np_humidity_blend, pos.X, pos.Z, seed);
+ if (voronoi_biomes == 0)
+ return
+ NoisePerlin2D(&np_humidity, pos.X, pos.Z, seed) +
+ NoisePerlin2D(&np_humidity_blend, pos.X, pos.Z, seed);
+ else if (voronoi_biomes > 0)
+ return
+ (voronoi_biomes/2.0 + pos.Z) * 100.0/voronoi_biomes +
+ NoisePerlin2D(&np_humidity_blend, pos.X, pos.Z, seed);
+ else
+ return
+ fmod(fmod(-voronoi_biomes/2.0 + pos.Z, -voronoi_biomes) - voronoi_biomes, -voronoi_biomes) * -100.0/voronoi_biomes +
+ NoisePerlin2D(&np_humidity_blend, pos.X, pos.Z, seed);
}
@@ -215,10 +223,12 @@
@@ -214,13 +242,33 @@
// Only usable in a mapgen thread
Biome *BiomeGenOriginal::calcBiomeAtPoint(v3s16 pos) const
{
float heat =
- float heat =
- NoisePerlin2D(&m_params->np_heat, pos.X, pos.Z, m_params->seed) +
+ //NoisePerlin2D(&m_params->np_heat, pos.X, pos.Z, m_params->seed) +
+ (W_Voronoi/2 + pos.X) * 100/W_Voronoi +
NoisePerlin2D(&m_params->np_heat_blend, pos.X, pos.Z, m_params->seed);
float humidity =
- NoisePerlin2D(&m_params->np_heat_blend, pos.X, pos.Z, m_params->seed);
- float humidity =
- NoisePerlin2D(&m_params->np_humidity, pos.X, pos.Z, m_params->seed) +
+ //NoisePerlin2D(&m_params->np_humidity, pos.X, pos.Z, m_params->seed) +
+ (W_Voronoi/2 + pos.Z) * 100/W_Voronoi +
NoisePerlin2D(&m_params->np_humidity_blend, pos.X, pos.Z, m_params->seed);
- NoisePerlin2D(&m_params->np_humidity_blend, pos.X, pos.Z, m_params->seed);
+ float heat;
+ float humidity;
+ if (voronoi_biomes == 0) {
+ heat =
+ NoisePerlin2D(&m_params->np_heat, pos.X, pos.Z, m_params->seed) +
+ NoisePerlin2D(&m_params->np_heat_blend, pos.X, pos.Z, m_params->seed);
+ humidity =
+ NoisePerlin2D(&m_params->np_humidity, pos.X, pos.Z, m_params->seed) +
+ NoisePerlin2D(&m_params->np_humidity_blend, pos.X, pos.Z, m_params->seed);
+ }
+ else if (voronoi_biomes > 0) {
+ heat =
+ (voronoi_biomes/2.0 + pos.X) * 100.0/voronoi_biomes +
+ NoisePerlin2D(&m_params->np_heat_blend, pos.X, pos.Z, m_params->seed);
+ humidity =
+ (voronoi_biomes/2.0 + pos.Z) * 100.0/voronoi_biomes +
+ NoisePerlin2D(&m_params->np_humidity_blend, pos.X, pos.Z, m_params->seed);
+ }
+ else {
+ heat =
+ fmod(fmod(-voronoi_biomes/2.0 + pos.X, -voronoi_biomes) - voronoi_biomes, -voronoi_biomes) * -100.0/voronoi_biomes +
+ NoisePerlin2D(&m_params->np_heat_blend, pos.X, pos.Z, m_params->seed);
+ humidity =
+ fmod(fmod(-voronoi_biomes/2.0 + pos.Z, -voronoi_biomes) - voronoi_biomes, -voronoi_biomes) * -100.0/voronoi_biomes +
+ NoisePerlin2D(&m_params->np_humidity_blend, pos.X, pos.Z, m_params->seed);
+ }
return calcBiomeFromNoise(heat, humidity, pos);
@@ -234,6 +244,11 @@
}
@@ -234,6 +282,19 @@
noise_heat_blend->perlinMap2D(pmin.X, pmin.Z);
noise_humidity_blend->perlinMap2D(pmin.X, pmin.Z);
+ for (s32 i = 0; i < m_csize.X; i++)
+ for (s32 j = 0; j < m_csize.Z; j++) {
+ noise_heat->result[i + j*m_csize.X] = (W_Voronoi/2 + pmin.X + i) * 100/W_Voronoi;
+ noise_humidity->result[i + j*m_csize.X] = (W_Voronoi/2 + pmin.Z + j) * 100/W_Voronoi;
+ }
+ if (voronoi_biomes > 0)
+ for (s32 i = 0; i < m_csize.X; i++)
+ for (s32 j = 0; j < m_csize.Z; j++) {
+ noise_heat->result[i + j*m_csize.X] = (voronoi_biomes/2.0 + pmin.X + i) * 100.0/voronoi_biomes;
+ noise_humidity->result[i + j*m_csize.X] = (voronoi_biomes/2.0 + pmin.Z + j) * 100.0/voronoi_biomes;
+ }
+ else if (voronoi_biomes < 0)
+ for (s32 i = 0; i < m_csize.X; i++)
+ for (s32 j = 0; j < m_csize.Z; j++) {
+ noise_heat->result[i + j*m_csize.X] = fmod(fmod(-voronoi_biomes/2.0 + pmin.X + i, -voronoi_biomes) - voronoi_biomes, -voronoi_biomes) * -100.0/voronoi_biomes;
+ noise_humidity->result[i + j*m_csize.X] = fmod(fmod(-voronoi_biomes/2.0 + pmin.Z + j, -voronoi_biomes) - voronoi_biomes, -voronoi_biomes) * -100.0/voronoi_biomes;
+ }
+
for (s32 i = 0; i < m_csize.X * m_csize.Z; i++) {
noise_heat->result[i] += noise_heat_blend->result[i];
noise_humidity->result[i] += noise_humidity_blend->result[i];
@@ -336,3 +351,4 @@
getIdFromNrBacklog(&c_dungeon_alt, "ignore", CONTENT_IGNORE, false);
getIdFromNrBacklog(&c_dungeon_stair, "ignore", CONTENT_IGNORE, false);
}
+