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worldgen: parse structure sets and place them on the vanilla grid

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Loads the 26.1.2 structure datapack: 20 structure sets, 34 structure
definitions, and the worldgen biome tags they reference. Random-spread
placement follows RandomSpreadStructurePlacement byte for byte — region
floorDiv by spacing, one Legacy stream salted per region, two
spread-type draws for the offset — and the four legacy frequency
reducers keep their exact draws, including the hardcoded buried-treasure
salt and the outpost's discarded full-range int.

Verified against the fixture: on seed 12345 the ruined_portals set
claims exactly chunk (1,0), the chunk whose captured blocks carry the
ruined portal's obsidian, gold, and crying obsidian. TestStructure-
PlacementGrid pins that plus village separation invariants.
This commit is contained in:
Daniar Mannanov 2026-08-26 10:33:10 +03:00
parent f162698302
commit c488ce274f
125 changed files with 2123 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

48
internal/worldgen/data/structure_json/ancient_city.json Normal file
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{
"type": "minecraft:jigsaw",
"biomes": "#minecraft:has_structure/ancient_city",
"max_distance_from_center": 116,
"size": 7,
"spawn_overrides": {
"ambient": {
"bounding_box": "full",
"spawns": []
},
"axolotls": {
"bounding_box": "full",
"spawns": []
},
"creature": {
"bounding_box": "full",
"spawns": []
},
"misc": {
"bounding_box": "full",
"spawns": []
},
"monster": {
"bounding_box": "full",
"spawns": []
},
"underground_water_creature": {
"bounding_box": "full",
"spawns": []
},
"water_ambient": {
"bounding_box": "full",
"spawns": []
},
"water_creature": {
"bounding_box": "full",
"spawns": []
}
},
"start_height": {
"absolute": -27
},
"start_jigsaw_name": "minecraft:city_anchor",
"start_pool": "minecraft:ancient_city/city_center",
"step": "underground_decoration",
"terrain_adaptation": "beard_box",
"use_expansion_hack": false
}

13
internal/worldgen/data/structure_json/bastion_remnant.json Normal file
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{
"type": "minecraft:jigsaw",
"biomes": "#minecraft:has_structure/bastion_remnant",
"max_distance_from_center": 80,
"size": 6,
"spawn_overrides": {},
"start_height": {
"absolute": 33
},
"start_pool": "minecraft:bastion/starts",
"step": "surface_structures",
"use_expansion_hack": false
}

6
internal/worldgen/data/structure_json/buried_treasure.json Normal file
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{
"type": "minecraft:buried_treasure",
"biomes": "#minecraft:has_structure/buried_treasure",
"spawn_overrides": {},
"step": "underground_structures"
}

6
internal/worldgen/data/structure_json/desert_pyramid.json Normal file
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{
"type": "minecraft:desert_pyramid",
"biomes": "#minecraft:has_structure/desert_pyramid",
"spawn_overrides": {},
"step": "surface_structures"
}

6
internal/worldgen/data/structure_json/end_city.json Normal file
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{
"type": "minecraft:end_city",
"biomes": "#minecraft:has_structure/end_city",
"spawn_overrides": {},
"step": "surface_structures"
}

42
internal/worldgen/data/structure_json/fortress.json Normal file
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{
"type": "minecraft:fortress",
"biomes": "#minecraft:has_structure/nether_fortress",
"spawn_overrides": {
"monster": {
"bounding_box": "piece",
"spawns": [
{
"type": "minecraft:blaze",
"maxCount": 3,
"minCount": 2,
"weight": 10
},
{
"type": "minecraft:zombified_piglin",
"maxCount": 4,
"minCount": 4,
"weight": 5
},
{
"type": "minecraft:wither_skeleton",
"maxCount": 5,
"minCount": 5,
"weight": 8
},
{
"type": "minecraft:skeleton",
"maxCount": 5,
"minCount": 5,
"weight": 2
},
{
"type": "minecraft:magma_cube",
"maxCount": 4,
"minCount": 4,
"weight": 3
}
]
}
},
"step": "underground_decoration"
}

6
internal/worldgen/data/structure_json/igloo.json Normal file
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{
"type": "minecraft:igloo",
"biomes": "#minecraft:has_structure/igloo",
"spawn_overrides": {},
"step": "surface_structures"
}

6
internal/worldgen/data/structure_json/jungle_pyramid.json Normal file
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{
"type": "minecraft:jungle_temple",
"biomes": "#minecraft:has_structure/jungle_temple",
"spawn_overrides": {},
"step": "surface_structures"
}

6
internal/worldgen/data/structure_json/mansion.json Normal file
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{
"type": "minecraft:woodland_mansion",
"biomes": "#minecraft:has_structure/woodland_mansion",
"spawn_overrides": {},
"step": "surface_structures"
}

7
internal/worldgen/data/structure_json/mineshaft.json Normal file
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{
"type": "minecraft:mineshaft",
"biomes": "#minecraft:has_structure/mineshaft",
"mineshaft_type": "normal",
"spawn_overrides": {},
"step": "underground_structures"
}

7
internal/worldgen/data/structure_json/mineshaft_mesa.json Normal file
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{
"type": "minecraft:mineshaft",
"biomes": "#minecraft:has_structure/mineshaft_mesa",
"mineshaft_type": "mesa",
"spawn_overrides": {},
"step": "underground_structures"
}

26
internal/worldgen/data/structure_json/monument.json Normal file
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{
"type": "minecraft:ocean_monument",
"biomes": "#minecraft:has_structure/ocean_monument",
"spawn_overrides": {
"axolotls": {
"bounding_box": "full",
"spawns": []
},
"monster": {
"bounding_box": "full",
"spawns": [
{
"type": "minecraft:guardian",
"maxCount": 4,
"minCount": 2,
"weight": 1
}
]
},
"underground_water_creature": {
"bounding_box": "full",
"spawns": []
}
},
"step": "surface_structures"
}

16
internal/worldgen/data/structure_json/nether_fossil.json Normal file
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{
"type": "minecraft:nether_fossil",
"biomes": "#minecraft:has_structure/nether_fossil",
"height": {
"type": "minecraft:uniform",
"max_inclusive": {
"below_top": 2
},
"min_inclusive": {
"absolute": 32
}
},
"spawn_overrides": {},
"step": "underground_decoration",
"terrain_adaptation": "beard_thin"
}

9
internal/worldgen/data/structure_json/ocean_ruin_cold.json Normal file
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{
"type": "minecraft:ocean_ruin",
"biome_temp": "cold",
"biomes": "#minecraft:has_structure/ocean_ruin_cold",
"cluster_probability": 0.9,
"large_probability": 0.3,
"spawn_overrides": {},
"step": "surface_structures"
}

9
internal/worldgen/data/structure_json/ocean_ruin_warm.json Normal file
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{
"type": "minecraft:ocean_ruin",
"biome_temp": "warm",
"biomes": "#minecraft:has_structure/ocean_ruin_warm",
"cluster_probability": 0.9,
"large_probability": 0.3,
"spawn_overrides": {},
"step": "surface_structures"
}

27
internal/worldgen/data/structure_json/pillager_outpost.json Normal file
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{
"type": "minecraft:jigsaw",
"biomes": "#minecraft:has_structure/pillager_outpost",
"max_distance_from_center": 80,
"project_start_to_heightmap": "WORLD_SURFACE_WG",
"size": 7,
"spawn_overrides": {
"monster": {
"bounding_box": "full",
"spawns": [
{
"type": "minecraft:pillager",
"maxCount": 1,
"minCount": 1,
"weight": 1
}
]
}
},
"start_height": {
"absolute": 0
},
"start_pool": "minecraft:pillager_outpost/base_plates",
"step": "surface_structures",
"terrain_adaptation": "beard_thin",
"use_expansion_hack": true
}

28
internal/worldgen/data/structure_json/ruined_portal.json Normal file
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{
"type": "minecraft:ruined_portal",
"biomes": "#minecraft:has_structure/ruined_portal_standard",
"setups": [
{
"air_pocket_probability": 1.0,
"can_be_cold": true,
"mossiness": 0.2,
"overgrown": false,
"placement": "underground",
"replace_with_blackstone": false,
"vines": false,
"weight": 0.5
},
{
"air_pocket_probability": 0.5,
"can_be_cold": true,
"mossiness": 0.2,
"overgrown": false,
"placement": "on_land_surface",
"replace_with_blackstone": false,
"vines": false,
"weight": 0.5
}
],
"spawn_overrides": {},
"step": "surface_structures"
}

18
internal/worldgen/data/structure_json/ruined_portal_desert.json Normal file
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{
"type": "minecraft:ruined_portal",
"biomes": "#minecraft:has_structure/ruined_portal_desert",
"setups": [
{
"air_pocket_probability": 0.0,
"can_be_cold": false,
"mossiness": 0.0,
"overgrown": false,
"placement": "partly_buried",
"replace_with_blackstone": false,
"vines": false,
"weight": 1.0
}
],
"spawn_overrides": {},
"step": "surface_structures"
}

18
internal/worldgen/data/structure_json/ruined_portal_jungle.json Normal file
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{
"type": "minecraft:ruined_portal",
"biomes": "#minecraft:has_structure/ruined_portal_jungle",
"setups": [
{
"air_pocket_probability": 0.5,
"can_be_cold": false,
"mossiness": 0.8,
"overgrown": true,
"placement": "on_land_surface",
"replace_with_blackstone": false,
"vines": true,
"weight": 1.0
}
],
"spawn_overrides": {},
"step": "surface_structures"
}

28
internal/worldgen/data/structure_json/ruined_portal_mountain.json Normal file
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{
"type": "minecraft:ruined_portal",
"biomes": "#minecraft:has_structure/ruined_portal_mountain",
"setups": [
{
"air_pocket_probability": 1.0,
"can_be_cold": true,
"mossiness": 0.2,
"overgrown": false,
"placement": "in_mountain",
"replace_with_blackstone": false,
"vines": false,
"weight": 0.5
},
{
"air_pocket_probability": 0.5,
"can_be_cold": true,
"mossiness": 0.2,
"overgrown": false,
"placement": "on_land_surface",
"replace_with_blackstone": false,
"vines": false,
"weight": 0.5
}
],
"spawn_overrides": {},
"step": "surface_structures"
}

18
internal/worldgen/data/structure_json/ruined_portal_nether.json Normal file
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{
"type": "minecraft:ruined_portal",
"biomes": "#minecraft:has_structure/ruined_portal_nether",
"setups": [
{
"air_pocket_probability": 0.5,
"can_be_cold": false,
"mossiness": 0.0,
"overgrown": false,
"placement": "in_nether",
"replace_with_blackstone": true,
"vines": false,
"weight": 1.0
}
],
"spawn_overrides": {},
"step": "surface_structures"
}

18
internal/worldgen/data/structure_json/ruined_portal_ocean.json Normal file
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{
"type": "minecraft:ruined_portal",
"biomes": "#minecraft:has_structure/ruined_portal_ocean",
"setups": [
{
"air_pocket_probability": 0.0,
"can_be_cold": true,
"mossiness": 0.8,
"overgrown": false,
"placement": "on_ocean_floor",
"replace_with_blackstone": false,
"vines": false,
"weight": 1.0
}
],
"spawn_overrides": {},
"step": "surface_structures"
}

18
internal/worldgen/data/structure_json/ruined_portal_swamp.json Normal file
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{
"type": "minecraft:ruined_portal",
"biomes": "#minecraft:has_structure/ruined_portal_swamp",
"setups": [
{
"air_pocket_probability": 0.0,
"can_be_cold": false,
"mossiness": 0.5,
"overgrown": false,
"placement": "on_ocean_floor",
"replace_with_blackstone": false,
"vines": true,
"weight": 1.0
}
],
"spawn_overrides": {},
"step": "surface_structures"
}

7
internal/worldgen/data/structure_json/shipwreck.json Normal file
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{
"type": "minecraft:shipwreck",
"biomes": "#minecraft:has_structure/shipwreck",
"is_beached": false,
"spawn_overrides": {},
"step": "surface_structures"
}

7
internal/worldgen/data/structure_json/shipwreck_beached.json Normal file
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{
"type": "minecraft:shipwreck",
"biomes": "#minecraft:has_structure/shipwreck_beached",
"is_beached": true,
"spawn_overrides": {},
"step": "surface_structures"
}

7
internal/worldgen/data/structure_json/stronghold.json Normal file
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{
"type": "minecraft:stronghold",
"biomes": "#minecraft:has_structure/stronghold",
"spawn_overrides": {},
"step": "surface_structures",
"terrain_adaptation": "bury"
}

29
internal/worldgen/data/structure_json/swamp_hut.json Normal file
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{
"type": "minecraft:swamp_hut",
"biomes": "#minecraft:has_structure/swamp_hut",
"spawn_overrides": {
"creature": {
"bounding_box": "piece",
"spawns": [
{
"type": "minecraft:cat",
"maxCount": 1,
"minCount": 1,
"weight": 1
}
]
},
"monster": {
"bounding_box": "piece",
"spawns": [
{
"type": "minecraft:witch",
"maxCount": 1,
"minCount": 1,
"weight": 1
}
]
}
},
"step": "surface_structures"
}

15
internal/worldgen/data/structure_json/trail_ruins.json Normal file
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{
"type": "minecraft:jigsaw",
"biomes": "#minecraft:has_structure/trail_ruins",
"max_distance_from_center": 80,
"project_start_to_heightmap": "WORLD_SURFACE_WG",
"size": 7,
"spawn_overrides": {},
"start_height": {
"absolute": -15
},
"start_pool": "minecraft:trail_ruins/tower",
"step": "underground_structures",
"terrain_adaptation": "bury",
"use_expansion_hack": false
}

147
internal/worldgen/data/structure_json/trial_chambers.json Normal file
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{
"type": "minecraft:jigsaw",
"biomes": "#minecraft:has_structure/trial_chambers",
"dimension_padding": 10,
"liquid_settings": "ignore_waterlogging",
"max_distance_from_center": 116,
"pool_aliases": [
{
"type": "minecraft:random_group",
"groups": [
{
"data": [
{
"type": "minecraft:direct",
"alias": "minecraft:trial_chambers/spawner/contents/ranged",
"target": "minecraft:trial_chambers/spawner/ranged/skeleton"
},
{
"type": "minecraft:direct",
"alias": "minecraft:trial_chambers/spawner/contents/slow_ranged",
"target": "minecraft:trial_chambers/spawner/slow_ranged/skeleton"
}
],
"weight": 1
},
{
"data": [
{
"type": "minecraft:direct",
"alias": "minecraft:trial_chambers/spawner/contents/ranged",
"target": "minecraft:trial_chambers/spawner/ranged/stray"
},
{
"type": "minecraft:direct",
"alias": "minecraft:trial_chambers/spawner/contents/slow_ranged",
"target": "minecraft:trial_chambers/spawner/slow_ranged/stray"
}
],
"weight": 1
},
{
"data": [
{
"type": "minecraft:direct",
"alias": "minecraft:trial_chambers/spawner/contents/ranged",
"target": "minecraft:trial_chambers/spawner/ranged/poison_skeleton"
},
{
"type": "minecraft:direct",
"alias": "minecraft:trial_chambers/spawner/contents/slow_ranged",
"target": "minecraft:trial_chambers/spawner/slow_ranged/poison_skeleton"
}
],
"weight": 1
}
]
},
{
"type": "minecraft:random",
"alias": "minecraft:trial_chambers/spawner/contents/melee",
"targets": [
{
"data": "minecraft:trial_chambers/spawner/melee/zombie",
"weight": 1
},
{
"data": "minecraft:trial_chambers/spawner/melee/husk",
"weight": 1
},
{
"data": "minecraft:trial_chambers/spawner/melee/spider",
"weight": 1
}
]
},
{
"type": "minecraft:random",
"alias": "minecraft:trial_chambers/spawner/contents/small_melee",
"targets": [
{
"data": "minecraft:trial_chambers/spawner/small_melee/slime",
"weight": 1
},
{
"data": "minecraft:trial_chambers/spawner/small_melee/cave_spider",
"weight": 1
},
{
"data": "minecraft:trial_chambers/spawner/small_melee/silverfish",
"weight": 1
},
{
"data": "minecraft:trial_chambers/spawner/small_melee/baby_zombie",
"weight": 1
}
]
}
],
"size": 20,
"spawn_overrides": {
"ambient": {
"bounding_box": "piece",
"spawns": []
},
"axolotls": {
"bounding_box": "piece",
"spawns": []
},
"creature": {
"bounding_box": "piece",
"spawns": []
},
"misc": {
"bounding_box": "piece",
"spawns": []
},
"monster": {
"bounding_box": "piece",
"spawns": []
},
"underground_water_creature": {
"bounding_box": "piece",
"spawns": []
},
"water_ambient": {
"bounding_box": "piece",
"spawns": []
},
"water_creature": {
"bounding_box": "piece",
"spawns": []
}
},
"start_height": {
"type": "minecraft:uniform",
"max_inclusive": {
"absolute": -20
},
"min_inclusive": {
"absolute": -40
}
},
"start_pool": "minecraft:trial_chambers/chamber/end",
"step": "underground_structures",
"terrain_adaptation": "encapsulate",
"use_expansion_hack": false
}

15
internal/worldgen/data/structure_json/village_desert.json Normal file
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{
"type": "minecraft:jigsaw",
"biomes": "#minecraft:has_structure/village_desert",
"max_distance_from_center": 80,
"project_start_to_heightmap": "WORLD_SURFACE_WG",
"size": 6,
"spawn_overrides": {},
"start_height": {
"absolute": 0
},
"start_pool": "minecraft:village/desert/town_centers",
"step": "surface_structures",
"terrain_adaptation": "beard_thin",
"use_expansion_hack": true
}

15
internal/worldgen/data/structure_json/village_plains.json Normal file
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{
"type": "minecraft:jigsaw",
"biomes": "#minecraft:has_structure/village_plains",
"max_distance_from_center": 80,
"project_start_to_heightmap": "WORLD_SURFACE_WG",
"size": 6,
"spawn_overrides": {},
"start_height": {
"absolute": 0
},
"start_pool": "minecraft:village/plains/town_centers",
"step": "surface_structures",
"terrain_adaptation": "beard_thin",
"use_expansion_hack": true
}

15
internal/worldgen/data/structure_json/village_savanna.json Normal file
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{
"type": "minecraft:jigsaw",
"biomes": "#minecraft:has_structure/village_savanna",
"max_distance_from_center": 80,
"project_start_to_heightmap": "WORLD_SURFACE_WG",
"size": 6,
"spawn_overrides": {},
"start_height": {
"absolute": 0
},
"start_pool": "minecraft:village/savanna/town_centers",
"step": "surface_structures",
"terrain_adaptation": "beard_thin",
"use_expansion_hack": true
}

15
internal/worldgen/data/structure_json/village_snowy.json Normal file
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{
"type": "minecraft:jigsaw",
"biomes": "#minecraft:has_structure/village_snowy",
"max_distance_from_center": 80,
"project_start_to_heightmap": "WORLD_SURFACE_WG",
"size": 6,
"spawn_overrides": {},
"start_height": {
"absolute": 0
},
"start_pool": "minecraft:village/snowy/town_centers",
"step": "surface_structures",
"terrain_adaptation": "beard_thin",
"use_expansion_hack": true
}

15
internal/worldgen/data/structure_json/village_taiga.json Normal file
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{
"type": "minecraft:jigsaw",
"biomes": "#minecraft:has_structure/village_taiga",
"max_distance_from_center": 80,
"project_start_to_heightmap": "WORLD_SURFACE_WG",
"size": 6,
"spawn_overrides": {},
"start_height": {
"absolute": 0
},
"start_pool": "minecraft:village/taiga/town_centers",
"step": "surface_structures",
"terrain_adaptation": "beard_thin",
"use_expansion_hack": true
}