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Author SHA1 Message Date
Gael-de-Sailly
9b4a9b2516 Rework default erosion parameters, 
Fix ignored values of K and m,
and changed processes order.
 2020-12-24 14:48:17 +01:00
Gael-de-Sailly
7529291ab4 For bounds.py (calculation of offsets), use the same data type as rivers 2020-12-24 14:48:17 +01:00
Gael-de-Sailly
b4f97bec61 For noise map seed: don't go over ±4096, to prevent rounding errors on coordinates (because noise library uses 32-bit floats) 2020-12-24 14:48:17 +01:00
Gael-de-Sailly
3dc874a494 Added description of the algorithm + acknowledge the authors of the paper. 2020-12-24 14:48:17 +01:00
Gael-de-Sailly
f0dddee33c Lakes map: keep initial height (reduces file size) 
Lake height is calculated for every basin, and there is a lake if lake height is higher than ground height. If it is lower, there is no lake.
In that case, it was previously raised to ground level, but since this can be done in Lua, we can write initial lakes height in the files.
This has the advantage of reducing file size, since there are bigger areas of equal values, that are more efficiently compressed.
 2020-12-24 14:48:17 +01:00
Gael-de-Sailly
ecd2c7d3f9 Completely change flow routing algorithm, 
use a local flow calculation, determine depressions, and link them using a minimum spanning tree (Boruvka's algorithm).
This is based on a paper by Cordonnier et al, 2019.
 2020-12-24 14:48:17 +01:00
Gael-de-Sailly
40098d6be3 Use standard int instead of uint8, int32, etc. 
Much faster with NumPy.
 2020-12-24 14:48:17 +01:00
Gael-de-Sailly
faef1658a9 Fixed map centering, and converted polygon coordinates to map nodes instead of grid nodes. 2020-12-22 16:38:30 +01:00
Gael-de-Sailly
d5cf4a6267 Optionally center the map around x=0 z=0 2020-12-20 22:28:54 +01:00
Gael-de-Sailly
53f88d337d Protect map preview from exceptions 
Since map preview is optional, an exception should not propagate to terrain calculation, so print an error message + traceback but keep the script running.
 2020-11-25 13:12:24 +01:00
Gael-de-Sailly
3644965842 Fix bool settings being improperly loaded as strings 2020-11-17 20:56:02 +01:00
Gael-de-Sailly
9725979363 Fix increments for argument parsing 2020-11-17 20:45:11 +01:00
Gael-de-Sailly
ebacd3cdd4 Add license, update/improve documentation 2020-11-15 11:43:30 +01:00
Gael-de-Sailly
fc0a158385 Disable glaciers by default 2020-11-15 11:26:50 +01:00
Gael-de-Sailly
050ca3b779 Change demo data, update to a grid using new default parameters 2020-11-15 11:19:28 +01:00
Gael-de-Sailly
1f41423104 Print a clear message when grid is ready 
Also use plt.pause before plotting, ensuring plot is updated in real time
 2020-11-15 11:13:42 +01:00
Gael-de-Sailly
52766e8918 Added settingtypes 2020-11-15 11:10:19 +01:00
Gael-de-Sailly
28c674d57c Decrease default diffusion factor 2020-11-14 19:14:09 +01:00
Gael-de-Sailly
90f60ea6fb typo 2020-11-14 19:13:58 +01:00
Gael-de-Sailly
803114aaab Generate data in river_data instead of data 2020-11-14 19:12:12 +01:00
Gael-de-Sailly
9594a79f8b Configurable output directory 
Now relative to the directory the script is *run in*.
 2020-11-14 18:26:13 +01:00
Gael-de-Sailly
d93234c9b7 Moved Python files inside a folder (package), except the 2 that are directly executable 2020-11-14 17:35:27 +01:00
Gael-de-Sailly
7acd0af550 Use biomegen.generate_all 2020-11-14 17:35:03 +01:00
Gael-de-Sailly
3792cd5dc8 Added support for biomegen mod 2020-11-14 17:35:03 +01:00
Gael-de-Sailly
6b9c091dd5 Fix file opening mode on the Lua side, to avoid crashes on Windows 2020-11-14 17:31:36 +01:00
Gael-de-Sailly
b90cecdaf7 Allow command-line options for Python processing 2020-11-14 14:30:53 +01:00
Gael-de-Sailly
c33f2d9582 Python side: rework config system. 
Load `terrain.conf` of the script directory by default.
Add a `terrain_higher.conf` for alternative terrain.
 2020-11-14 12:19:40 +01:00
Gael-de-Sailly
8a15bc924d Dynamic map displaying 
Map is displayed at every iteration if matplotlib library is installed
 2020-11-14 12:05:52 +01:00
Gael-de-Sailly
3fda369fb5 Rewritten map viewer 
Now displays map statistics even if there is no matplotlib
 2020-11-13 11:04:27 +01:00
Gael-de-Sailly
30136bf60a Added scale (blocksize) parameter for view_map.py 2020-11-10 13:19:20 +01:00
Gael-de-Sailly
9475b49b8d Removed duplicate calls to 2 scripts 2020-11-10 13:18:02 +01:00
Gael-de-Sailly
36b49a7fe2 Add settings for parameters in terrain_rivers.py 2020-07-21 14:12:20 +02:00
Gaël de Sailly
103cd49d78 Optionally disable distorsion 
by setting 'mapgen_rivers_distort = false' in minetest.conf
 2020-07-21 14:01:29 +02:00
Gaël de Sailly
25c5cb2e1f Reverse axes order for heightmaps (iterate in Z direction first instead of X) 2020-07-21 12:46:23 +02:00
Gael-de-Sailly
6f43430574 Added glaciers, and re-organized noise definitions 2020-05-24 12:09:21 +02:00
Gael-de-Sailly
625768f967 Added snow and ice in function of temperature. 
Uses noise parameters of builtin biomegen
 2020-05-23 18:13:00 +02:00
Gael-de-Sailly
4edd1a946e Horizontal shifting according to 3D noises: 
makes slopes more irregular and natural-looking, allows overhanging.
This is done by generating an intermediate 2D elevation map and, for each node in 3D, add a 2D offset vector to the position, and seek this position on the heightmap.
 2020-05-23 15:52:16 +02:00
Gael-de-Sailly
f56857e804 Fix water not being set at lower chunk borders 2020-05-08 10:02:04 +02:00
Gael-de-Sailly
a73a0dd80b Avoid some redundant calculation on corners 
(not very significant, but why not)
 2020-04-27 21:08:15 +02:00
Gael-de-Sailly
a9ab0e53d3 Change folder structure: data files are now in a directory. 
Also added a demo 400x400 map, that is overriden on pre-processing.
 2020-04-26 23:29:36 +02:00
Gaël de Sailly
b429b302e1 Rewritten part of code to calculate river depth 
Fixes bathymetry problems on turns or confluences, as well as abrupt riverbanks.
 2020-04-26 22:19:05 +02:00
Gael-de-Sailly
cd4b517585 terrain_rivers.py: mapsize is now the number of intervals 
instead of the number of nodes.
 2020-04-26 19:51:21 +02:00
Gael-de-Sailly
cd90a21df4 Enhanced visualization code to display colormaps, and reuse the same code for initial and further viewing, in view_map.py 2020-04-26 18:30:29 +02:00
Gael-de-Sailly
206c68813e Switch again to using river direction and flux instead of table of bounds 2020-04-26 18:10:23 +02:00
Gael-de-Sailly
6af6795d90 Comment and clarify 2020-04-26 17:13:38 +02:00
Gael-de-Sailly
49bc397718 Fix parameters for Simplex noise, to make sure the last octave has not a greater scale than 1 
Also use a 401x401 grid instead of 400, so that there are 400 intervals
 2020-04-26 16:52:40 +02:00
Gael-de-Sailly
9700e948b9 Position should be strictly beyond river threshold to be a river 
Prevents some wrongly placed water pixels.
 2020-04-14 21:54:05 +02:00
Gael-de-Sailly
55725ad94b Re-organized the code. All polygon-related calculations go to polygons.lua. 2020-04-14 21:11:54 +02:00
Gael-de-Sailly
43211fc31b Removed useless functions get_point_location and geometry.area 2020-04-14 20:26:15 +02:00
Gael-de-Sailly
14163681cc Use settings from minetest.conf 2020-04-14 18:40:51 +02:00