Done json plotting

mods/rp_export_json/init.lua

@@ -19,9 +19,10 @@
     USA
 ]]
 
+local S = minetest.get_translator("rp_export_json")
 local color_map = {}
 for hex, _ in pairs(rp_nodes.colors) do
-    color_map[minetest.get_content_id("rp_nodes:color_" .. hex)] = hex
+    color_map[minetest.get_content_id("rp_nodes:color_" .. hex)] = tonumber(hex, 16)
 end
 
 local function save(callback)
@@ -40,12 +41,14 @@ local function save(callback)
         json_data.z_axis = (area[2][2] - area[1][2] + 1)
         json_data.map = {}
         local VA = VoxelArea(minp, maxp)
-        for z = area[2][1], area[2][2] do
-            for x = area[1][1], area[1][2] do
+        for z = area[1][2], area[2][2] do
+            local x_data = {}
+            for x = area[1][1], area[2][1] do
                 local i = VA:index(x,1,z)
                 local id = data[i]
-                json_data.map[#json_data.map+1] = color_map[id] or ""
+                x_data[#x_data+1] = color_map[id] or 0
             end
+            json_data.map[#json_data.map+1] = x_data
         end
         
         local json = minetest.write_json(json_data)
@@ -53,7 +56,9 @@ local function save(callback)
         minetest.safe_file_write(WP .. "/r_place.json", json)
     end, function(...)
         minetest.log("action","[rp_export_json] Done saving to JSON")
-        callback(...)
+        if callback then
+            callback(...)
+        end
     end, color_map, rp_core.area, data, minp, maxp)
 end
 
@@ -63,4 +68,13 @@ local function loop()
     end)
 end
 
-minetest.after(1,loop)
+minetest.after(1,loop)
+
+minetest.register_chatcommand("json_force_export", {
+    description = S("Forcely start export to JSON job"),
+    privs = {server = true},
+    func = function(name, param)
+        save()
+        return true, minetest.colorize("orange", S("Job started."))
+    end
+})

utils/plot_json_export/.gitignore

@@ -0,0 +1,160 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/

utils/plot_json_export/plot_json_export.py

@@ -0,0 +1,30 @@
+#!/usr/bin/env python
+
+import json, numpy as np, matplotlib.pyplot as plt
+
+def color_int2tuple(colorint):
+    # https://stackoverflow.com/a/2262152, License https://creativecommons.org/licenses/by-sa/2.5/
+    return (colorint & 255, (colorint >> 8) & 255, (colorint >> 16) & 255)
+
+def main(argv):
+    if len(argv) < 2:
+        print("Please supply JSON filename in command line.")
+        return 1
+    filename = argv[1]
+    try:
+        file = open(filename, "r")
+    except IOError:
+        print("Error opening file.")
+        raise
+    else:
+        with file:
+            data = json.load(file)
+    assert "map" in data, "Invalid JSON savefile format"
+    plts = np.array(tuple(tuple(color_int2tuple(int(c)) for c in r) for r in data["map"]), dtype=np.uint8)
+    plt.imshow(plts)
+    plt.show()
+    return 0
+
+if __name__ == "__main__":
+    from sys import argv, exit
+    exit(main(argv))