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  "path": "/viewtopic.php?p=450609#p450609",
  "publishedAt": "2026-04-18T11:54:07.000Z",
  "site": "https://forum.luanti.org",
  "tags": [
    "Krock"
  ],
  "textContent": "You could detect caves generated by the mapgen and fill those with lava.\n\n1. Use an on_generated callback\n2. Retrieve the VoxelManip objects (+ data)\n3. Probe a few positions by scanning upwards or downwards in the vmanip data for \"air\" nodes.\n4. If there are sufficient \"air\" nodes, do replace all of them under a certain Y coordinate with >= 1 lava source\n5. Write the data back to the map\n6. Test it.\n\nStatistics: Posted by Krock — Sat Apr 18, 2026 11:54\n\n* * *",
  "title": "Modding Discussion • Re: How to do an Underground Magma/Lava Lake or Lava pocket?",
  "updatedAt": "2026-04-18T11:54:07.000Z"
}