hbmspace:experimental_cave
Noise-bent tunnels with large rooms.
Tunnels bent by noise, wider and taller below depth_threshold, with rooms and occasional enlarged tunnels. They cut replaceable blocks and fluids, skip ellipsoids whose shell holds a fluid, and fill with lava at and below lava_level. On 26.3, a minecraft:noise generator whose biomes list a Space carver runs its carving after the surface pass, with vanilla carvers of the same biomes; Space carvers work only in such generators.
Fields
| Field | Meaning and default | Range |
|---|---|---|
probability | Chance that a source chunk starts the carver. | [0, 1] |
y | Vanilla height provider for start heights. | |
y_scale | Vanilla float provider: vertical scale of rooms. | |
lava_level | Vertical anchor at and below which cuts fill with the lava block. | |
replaceable | Block ID, #tag or ID list: blocks the carver may cut. | |
carving_scale | Accepted; unused. | \texttt{f32} |
depth_threshold | Y below which tunnels widen and bend more. | \texttt{i32} |
large_cave_size | Room size factor. | \texttt{f32} |
small_cave_size | Size factor of one in ten tunnels. | \texttt{f32} |
lava | Fill at and below lava_level. | |
top | Block ID, #tag or ID list: surface blocks. | |
filler | Block ID, #tag or ID list: blocks re-topped when exposed. | |
biomesOptional | Biome ID, #tag or ID list: positions the carver cuts; default all. |
The top-level type selects this carver; the remaining fields belong beside it.
Example
Source path: data/hbmspace/worldgen/carver/duna/caves.json
{
"type": "hbmspace:experimental_cave",
"biomes": [
"hbmspace:duna_plains",
"hbmspace:duna_polar",
"hbmspace:duna_hills",
"hbmspace:duna_polar_hills"
],
"carving_scale": 2.0,
"depth_threshold": 12,
"filler": [
"hbmspace:duna_sands",
"hbmspace:duna_rock",
"minecraft:snow_block"
],
"large_cave_size": 0.12,
"lava": "hbmspace:duna_sands",
"lava_level": {
"absolute": 9
},
"probability": 0.14285715,
"replaceable": [
"hbmspace:duna_rock",
"hbmspace:duna_sands",
"minecraft:snow_block"
],
"small_cave_size": 0.1,
"top": [
"hbmspace:duna_sands",
"minecraft:snow_block"
],
"y": {
"type": "minecraft:biased_to_bottom",
"inner": 8,
"max_inclusive": {
"absolute": 127
},
"min_inclusive": {
"absolute": 0
}
},
"y_scale": 0.5
}© 2026 movblock. Original site text is licensed under CC BY-SA 4.0 unless otherwise noted. Built with Fumadocs.