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World Generation

Generating Custom Structures

experimental
Generating Custom Structures

Structure feature is one of the most basic feature. It places exported .mcstructure file in the world. This tutorial will show you how to make:

  • Surface structure,

  • Underground structure,

  • Floating structure,

  • Underwater structure, and

  • Water surface structure

TIP

For exporting structure on android devices, use this resource pack

Make sure you put the .mcstructure file inside of BP/structures/!

Surface Structure ​

Feature File ​

BP/features/house_feature.json
json
{
	"format_version": "1.13.0",
	"minecraft:structure_template_feature": {
		"description": {
			"identifier": "wiki:house_feature"
		},
		"structure_name": "mystructure:house",
		"adjustment_radius": 4,
		"facing_direction": "random",
		"constraints": {
			"grounded": {},
			"unburied": {},
			"block_intersection": {
				"block_allowlist": [
					"minecraft:air" //The structure can only replace air
				]
			}
		}
	}
}

Feature Rule ​

BP/feature_rules/plains_house_feature.json
json
{
	"format_version": "1.13.0",
	"minecraft:feature_rules": {
		"description": {
			"identifier": "wiki:plains_house_feature",
			"places_feature": "wiki:house_feature"
		},
		"conditions": {
			"placement_pass": "first_pass",
			"minecraft:biome_filter": {
				"test": "has_biome_tag",
				"operator": "==",
				"value": "plains"
			}
		},
		"distribution": {
			"iterations": 1,
			"x": {
				"extent": [0, 16],
				"distribution": "uniform"
			},
			"y": "q.heightmap(v.worldx, v.worldz)", //Generates the feature on the highest block on the column
			"z": {
				"extent": [0, 16],
				"distribution": "uniform"
			},
			"scatter_chance": {
				"numerator": 1,
				"denominator": 25
			}
		}
	}
}

Underground Structure ​

Feature File ​

BP/features/bunker_feature.json
json
{
	"format_version": "1.13.0",
	"minecraft:structure_template_feature": {
		"description": {
			"identifier": "wiki:bunker_feature"
		},
		"structure_name": "mystructure:bunker",
		"adjustment_radius": 4,
		"facing_direction": "random",
		"constraints": {
			"block_intersection": {
				"block_allowlist": [
					"minecraft:air", //Makes the feature only replace air and stone
					"minecraft:stone"
				]
			}
		}
	}
}

Feature Rule ​

BP/feature_rules/overworld_bunker_feature.json
json
{
	"format_version": "1.13.0",
	"minecraft:feature_rules": {
		"description": {
			"identifier": "wiki:overworld_bunker_feature",
			"places_feature": "wiki:bunker_feature"
		},
		"conditions": {
			"placement_pass": "first_pass",
			"minecraft:biome_filter": {
				"test": "has_biome_tag",
				"operator": "==",
				"value": "overworld"
			}
		},
		"distribution": {
			"iterations": 1,
			"x": {
				"extent": [0, 16],
				"distribution": "uniform"
			},
			"y": {
				"extent": [
					11,
					50 //Makes the structure generate between y11 and y50
				],
				"distribution": "uniform"
			},
			"z": {
				"extent": [0, 16],
				"distribution": "uniform"
			},
			"scatter_chance": {
				"numerator": 1,
				"denominator": 15
			}
		}
	}
}

Floating Feature ​

Feature File ​

BP/features/balloon_feature.json
json
{
	"format_version": "1.13.0",
	"minecraft:structure_template_feature": {
		"description": {
			"identifier": "wiki:balloon_feature"
		},
		"structure_name": "mystructure:balloon",
		"adjustment_radius": 4,
		"facing_direction": "random",
		"constraints": {
			"block_intersection": {
				"block_allowlist": [
					"minecraft:air" //Makes the structure only replace air
				]
			}
		}
	}
}

Feature Rule ​

BP/feature_rules/overworld_balloon_feature.json
json
{
	"format_version": "1.13.0",
	"minecraft:feature_rules": {
		"description": {
			"identifier": "wiki:overworld_baloon_feature",
			"places_feature": "wiki:balloon_feature"
		},
		"conditions": {
			"placement_pass": "first_pass",
			"minecraft:biome_filter": {
				"test": "has_biome_tag",
				"operator": "==",
				"value": "overworld"
			}
		},
		"distribution": {
			"iterations": 1,
			"x": {
				"extent": [0, 16],
				"distribution": "uniform"
			},
			"y": {
				"extent": [
					100, //Makes the structure generate from y100 to y200
					200
				],
				"distribution": "uniform"
			},
			"z": {
				"extent": [0, 16],
				"distribution": "uniform"
			},
			"scatter_chance": {
				"numerator": 1,
				"denominator": 25
			}
		}
	}
}

Underwater Structure ​

TIP

For underwater structures, make sure you waterlogged the structure, because Minecraft won't waterlog them automatically!

Feature File ​

BP/features/aqua_temple_feature.json
json
{
	"format_version": "1.13.0",
	"minecraft:structure_template_feature": {
		"description": {
			"identifier": "wiki:aqua_temple_feature"
		},
		"structure_name": "mystructure:aqua_temple",
		"adjustment_radius": 4,
		"facing_direction": "random",
		"constraints": {
			"block_intersection": {
				"block_allowlist": [
					"minecraft:water" //Makes the structure only replace water
				]
			}
		}
	}
}

Feature Rule ​

BP/feature_rules/ocean_aqua_temple_feature.json
json
{
	"format_version": "1.13.0",
	"minecraft:feature_rules": {
		"description": {
			"identifier": "wiki:ocean_aqua_temple_feature",
			"places_feature": "wiki:aqua_temple_feature"
		},
		"conditions": {
			"placement_pass": "first_pass",
			"minecraft:biome_filter": {
				"test": "has_biome_tag",
				"operator": "==",
				"value": "ocean"
			}
		},
		"distribution": {
			"iterations": 1,
			"x": {
				"extent": [0, 16],
				"distribution": "uniform"
			},
			"y": "q.above_top_solid(v.worldx, v.worldz)", //Places the feature on top of the highest solid block on the column, so it won't place it on the surface of the water
			"z": {
				"extent": [0, 16],
				"distribution": "uniform"
			},
			"scatter_chance": {
				"numerator": 1,
				"denominator": 25
			}
		}
	}
}

Water Surface Structure ​

Feature File ​

BP/features/raft_feature.json
json
{
	"format_version": "1.13.0",
	"minecraft:structure_template_feature": {
		"description": {
			"identifier": "wiki:raft_feature"
		},
		"structure_name": "mystructure:raft",
		"adjustment_radius": 4,
		"facing_direction": "random",
		"constraints": {
			"block_intersection": {
				"block_allowlist": [
					"minecraft:water", //Makes the structure only replace air and water
					"minecraft:air"
				]
			}
		}
	}
}

Feature Rule ​

BP/feature_rules/ocean_raft_feature.json
json
{
	"format_version": "1.13.0",
	"minecraft:feature_rules": {
		"description": {
			"identifier": "wiki:ocean_raft_feature",
			"places_feature": "wiki:raft_feature"
		},
		"conditions": {
			"placement_pass": "first_pass",
			"minecraft:biome_filter": {
				"test": "has_biome_tag",
				"operator": "==",
				"value": "ocean"
			}
		},
		"distribution": {
			"iterations": 1,
			"x": {
				"extent": [0, 16],
				"distribution": "uniform"
			},
			"y": 62, //Makes the feature generate only on y62, which is Minecraft water level
			"z": {
				"extent": [0, 16],
				"distribution": "uniform"
			},
			"scatter_chance": {
				"numerator": 1,
				"denominator": 25
			}
		}
	}
}

Edit Generating Custom Structures on GitHub