FEATURES DOCUMENTATION Version: 1.15.0.51
This is documentation for a beta release of Minecraft. New features, components, and capabilities in this release are not final and might change without notice before the final release.
Be sure to check the documentation once the release is out of beta if your add-on isn't working properly. Resource and Behavior Packs created for the beta are not guaranteed to work on the final release.
Index#
Overview#
Features are decorations scattered throughout the world. Things such as trees, plants, flowers, springs, ore, and coral are all features. Basically, if it isn't the terrain or a mob, it's probably a feature!Features can be standalone or composed of multiple sub-features. In practice, most features in Minecraft are defined as a chain of two or more features. These chains typically end with features that place blocks in the world. Other feature types control flow such as conditional, sequential, or random distribution.
JSON format#
All features must specify the version that they target via the "format_version" field. The remainder of the data is contained in independet JSON sub-objects for each supported feature type. These feature types define the behavior of the feature and include properties specific to that behavior. To be valid, a definition must include exactly one of these type objects. See the full feature schema below for additional details and the full list of supported feature types.
Here is a sample feature
{
"format_version": "1.13.0",
"minecraft:ore_feature": {
"description": {
"identifier": "minecraft:coal_ore_feature"
},
"count": 17,
"places_block": "minecraft:coal_ore",
"may_replace": [
{
"name": "minecraft:stone",
"states": {
"stone_type": "andesite"
}
},
{
"name": "minecraft:stone",
"states": {
"stone_type": "andesite_smooth"
}
},
{
"name": "minecraft:stone",
"states": {
"stone_type": "diorite"
}
},
{
"name": "minecraft:stone",
"states": {
"stone_type": "diorite_smooth"
}
},
{
"name": "minecraft:stone",
"states": {
"stone_type": "granite"
}
},
{
"name": "minecraft:stone",
"states": {
"stone_type": "granite_smooth"
}
},
{
"name": "minecraft:stone",
"states": {
"stone_type": "stone"
}
}
]
}
}
Adding features#
Features are read from JSON files in the "features" subfolder of behavior packs. Loading enforces one feature per file; the file name and the name of the feature must match. Feature names can include a namespace of the form "namespace:feature_name" to help distinguish them from features that may be in other behavior packs. This namespace is not considered when matching the filename to the feature name. For example, in a file called "my_tree_feature.json" both "my_tree_feature" and "my_pack_name:my_tree_feature" would be valid identifiers. If two behavior packs define the same feature name (including namespace), then the feature from the highest pack in the stack will be used. This allows users to override base features if desired.
Supported features#
minecraft:aggregate_feature#
'minecraft:aggregate_feature' places a collection of features in an arbitary order. All features in the collection use the same input position. Features should not depend on each other, as there is no guarantee on the order the features will be placed.Succeeds if: At lease one feature is placed successfully.Fails if: All features fail to be placed.
Example use: scattering multiple different plants around a monument.
{
"format_version": 1.3.0,
"minecraft:aggregate_feature": {
"description": {
"identifier": "example:monument_with_flowers_feature"
},
"features": [
"monument_feature",
"scatter_white_flowers_feature",
"scatter_yellow_flower_feature"
]
}
}
minecraft:sequence_feature#
'minecraft:sequence_feature' places a collection of features sequentially, in the order they appear in data. The output position of the previous feature is used as the input position for the next. For example, a tree feature is placed at (0, 0, 0) and places blocks up to (0, 10, 0). The next feature in the sequence begins at (0, 10, 0).Succeeds if: All features in the sequence are successfully placed.Fails if: Any feature in the sequence fails to be placed. Features that have not yet been placed at the time of failure are skipped.
Example use: Scattering fruit throughout the canopy of a tree.
{
"format_version": 1.3.0,
"minecraft:sequence_feature": {
"description": {
"identifier": "example:oak_tree_then_apples_feature"
},
"features": [
"oak_tree_feature",
"scatter_apples_feature"
]
}
}
minecraft:ore_feature#
'minecraft:ore_feature' places a vein of blocks to simulate ore deposits. Despite the name, any block can be placed by this feature. During placement, existing world blocks are checked to see if they can be replaced by the new ore block based on the list provided in the 'may_replace' field. If no 'may_replace' field is specified, the ore block can replace any existing block.Succeeds if: At least one ore block is successfully placed.Fails if: All ore block placements fail.
Example use: Oil deposits in the sand.
{
"format_version": 1.13.0,
"minecraft:ore_feature": {
"description": {
"identifier": "example:oil_deposit_feature"
},
"places_block": "example:oil_block",
"count": 12,
"may_replace": [
"minecraft:sand"
]
}
}
minecraft:scatter_feature#
'minecraft:scatter_feature' scatters a feature throughout a chunk. The 'x', 'y', and 'z' fields are per-coordinate parameters. Note that coordinates represent an offset from the input position, not an absolute position. Coordinates may be a single value, a random distribution, or molang expression that resolves to a numeric value. The 'coordinate_eval_order' field is provided for finer control of coordinate resolution (particularly when using the 'grid' distribution). 'iterations' controls how many individual placements should occur if the 'scatter_chance' check succeeds. The 'scatter_chance' check happens once, so either all placements will run or none will.Succeeds if: At least one feature placement succeeds.Fails if: All feature placements fail.
Example use: Scattering flowers at sea level across half the chunks in a biome.
{
"format_version": 1.13.0,
"minecraft:scatter_feature": {
"description": {
"identifier": "example:scatter_flowers_feature"
},
"places_feature": "example:flower_feature",
"iterations": 10,
"scatter_chance": 50.0,
"x": {
"distribution": "uniform",
"extent": [ 0, 15 ]
},
"y": 64,
"z": {
"distribution": "uniform",
"extent": [ 0, 15 ]
}
}
}
minecraft:search_feature#
'minecraft:search_feature' sweeps a volume searching for a valid placement location for its referenced feature. The 'search_volume' field specifies the axis-aligned bounding box that defines the boundaries of the search. The search sweeps along the axis defined by the 'search_axis' field, layer by layer. For example, if 'search_axis' = '-x', blocks with greater x values will be checked before blocks with lower x values. Each layer is searched from the bottom-left to the top-right before moving to the next layer along the axis. By default, only one valid position must be found, but this can be altered by specifying the 'required_successes' field. If fewer than the required successes are found, no placement will occur.Succeeds if: The number of valid positions is equal to the value specified by 'required_successes'.Fails if: The number of valid positions is less than the value specified by 'required_successes'.
Example use: Attaching apples to a tree canopy
{
"format_version": 1.13.0,
"minecraft:search_feature": {
"description": {
"identifier": "example:find_valid_apples_feature"
},
"places_feature": "example:apple_feature",
"search_volume": {
"min": [ -3, -3, -3 ],
"max": [ 3, 3, 3 ]
},
"search_axis": "-y",
"required_successes": 3
}
minecraft:single_block_feature#
'minecraft:single_block_feature' places a single block in the world. The 'may_place_on' and 'may_replace' fields are whitelists which specify where the block can be placed. If these fields are omitted, the block can be placed anywhere. The block's internal survivability and placement rules can optionally be enforced with the 'enforce_survivability_rules' and 'enforce_placement_rules' fields. These rules are specified per-block and are typically designed to produce high quality gameplay or natural behavior. However, enabling this enforcement may make it harder to debug placement failures.Succeeds if: The block is successfully placed in the world.Fails if: The block fails to be placed.
Example use: Placing a single pumpkin block.
{
"format_version": 1.13.0,
"minecraft:single_block_feature": {
"description": {
"identifier": "example:single_pumpkin_feature"
},
"places_block": "example:pumpkin",
"enforce_placement_rules": true,
"enforce_survivability_rules": true,
"may_place_on": [
"example:grass"
],
"may_replace": [
"example:air"
]
}
}
minecraft:structure_template_feature#
'minecraft:structure_template_feature' places a structure in the world. The structure must be stored as a .mcstructure file in the "structures" subdirectory of a behavior pack. It is possible to reference structures that are part of other behavior packs, they do not need to come from the same behavior pack as this feature. Constraints can be defined to specify where the structure is allowed to be placed. During placement, the feature will search for a position within the 'adjustment_radius' that satisfies all constraints. If none are found, the structure will not be placed.Succeeds if: The structure is placed in the world.Fails if: The structure fails to be placed within the world.
Example use: Place a hot air balloon structure that "floats" in the air.
{
"format_version": 1.13.0,
"minecraft:structure_template_feature": {
"description": {
"identifier": "example:hot_air_balloon_feature"
},
"structure_name": "example:hot_air_balloon",
"adjustment_radius": 8,
"facing_direction": "random",
"constraints": {
"unburied": {},
"block_intersection": {
"block_whitelist": [
"example:air"
]
}
}
}
}
minecraft:tree_feature#
Feature type 'minecraft:tree_feature' has not yet been documented.
minecraft:weighted_random_feature#
'minecraft:weighted_random_feature' randomly selects and places a feature based on a weight value. Weights are relative, with higher values making selection more likely.Succeeds if: The selected feature is placed.Fails if: The selected feature fails to be placed.
Example use: Selecting and placing a variant of a flower.
{
"format_version": 1.13.0,
"minecraft:weighted_random_feature": {
"description": {
"identifier": "example:select_flower_feature"
},
"features": [
[ "example:white_flower_feature", 1 ],
[ "example:red_flower_feature", 2 ],
[ "example:blue_flower_feature", 1 ],
[ "example:yellow_flower_feature", 4 ]
]
}
}
Feature schema
Here is the complete feature schema
{
version "format_version"
object "minecraft:aggregate_feature" : opt
{
object "description"
{
string "identifier"
}
array "features"[1,*]
{
feature_reference "<any array element>" : opt
}
enumerated_value "early_out"<"none", "first_failure", "first_success"> : opt
}
object "minecraft:sequence_feature" : opt
{
object "description"
{
string "identifier"
}
array "features"[1,*]
{
feature_reference "<any array element>" : opt
}
}
object "minecraft:ore_feature" : opt
{
object "description"
{
string "identifier"
}
block_reference "places_block"
int "count"<1-*>
array "may_replace"[1,*] : opt
{
block_reference "<any array element>" : opt
}
}
object "minecraft:scatter_feature" : opt
{
object "description"
{
string "identifier"
}
feature_reference "places_feature"
bool "project_input_to_floor" : opt
molang "iterations"
object "scatter_chance" : opt
{
int "numerator"<1-*>
int "denominator"<1-*>
}
molang "scatter_chance" : opt
enumerated_value "coordinate_eval_order"<"xyz", "xzy", "yxz", "yzx", "zxy", "zyx"> : opt "xzy".
molang "x" : opt
object "x" : opt
{
enumerated_value "distribution"<"uniform", "gaussian", "inverse_gaussian", "fixed_grid", "jittered_grid">
int "step_size"<1-*> : opt
int "grid_offset"<0-*> : opt
array "extent"[2]
{
molang "[0..0]" : opt
molang "[1..1]" : opt
}
}
molang "z" : opt
object "z" : opt
{
enumerated_value "distribution"<"uniform", "gaussian", "inverse_gaussian", "fixed_grid", "jittered_grid">
int "step_size"<1-*> : opt
int "grid_offset"<0-*> : opt
array "extent"[2]
{
molang "[0..0]" : opt
molang "[1..1]" : opt
}
}
molang "y" : opt
object "y" : opt
{
enumerated_value "distribution"<"uniform", "gaussian", "inverse_gaussian", "fixed_grid", "jittered_grid">
int "step_size"<1-*> : opt
int "grid_offset"<0-*> : opt
array "extent"[2]
{
molang "[0..0]" : opt
molang "[1..1]" : opt
}
}
}
object "minecraft:search_feature" : opt
{
object "description"
{
string "identifier"
}
feature_reference "places_feature"
object "search_volume"
{
array "min"[3]
{
int "[0..0]"
int "[1..1]"
int "[2..2]"
}
array "max"[3]
{
int "[0..0]"
int "[1..1]"
int "[2..2]"
}
}
enumerated_value "search_axis"<"-x", "+x", "-y", "+y", "-z", "+z">
int "required_successes"<1-*> : opt
}
object "minecraft:single_block_feature" : opt
{
object "description"
{
string "identifier"
}
block_reference "places_block"
bool "enforce_placement_rules"
bool "enforce_survivability_rules"
object "may_attach_to" : opt
{
int "min_sides_must_attach"<1-4> : opt
bool "auto_rotate" : opt
block_reference "top" : opt
array "top" : opt
{
block_reference "<any array element>"
}
block_reference "bottom" : opt
array "bottom" : opt
{
block_reference "<any array element>"
}
block_reference "north" : opt
array "north" : opt
{
block_reference "<any array element>"
}
block_reference "east" : opt
array "east" : opt
{
block_reference "<any array element>"
}
block_reference "south" : opt
array "south" : opt
{
block_reference "<any array element>"
}
block_reference "west" : opt
array "west" : opt
{
block_reference "<any array element>"
}
block_reference "all" : opt
array "all" : opt
{
block_reference "<any array element>"
}
block_reference "sides" : opt
array "sides" : opt
{
block_reference "<any array element>"
}
}
array "may_replace" : opt
{
block_reference "<any array element>" : opt
}
}
object "minecraft:structure_template_feature" : opt
{
object "description"
{
string "identifier"
}
structure_reference "structure_name"
int "adjustment_radius"<0-16> : opt
enumerated_value "facing_direction"<"north", "south", "east", "west", "random"> : opt "random" if omitted.
object "constraints"
{
object "grounded" : opt
object "unburied" : opt
object "block_intersection" : opt
{
array "block_whitelist"
{
block_reference "<any array element>" : opt
}
}
}
}
object "minecraft:tree_feature" : opt
{
object "description"
{
string "identifier"
}
object "can_be_submerged" : opt
{
int "max_depth"<1-*>
}
bool "can_be_submerged" : opt
block_reference "base_block" : opt
array "base_block" : opt
{
block_reference "<any array element>"
}
object "base_cluster" : opt
{
array "may_replace"
{
block_reference "<any array element>" : opt
}
int "num_clusters"<1-*>
int "cluster_radius"<0-*>
}
array "may_grow_on" : opt
{
block_reference "<any array element>"
}
array "may_grow_through" : opt
{
block_reference "<any array element>"
}
object "acacia_trunk" : opt
{
int "trunk_width"
object "trunk_height"
{
int "base"<1-*>
array "intervals" : opt
{
int "<any array element>"<1-*> : opt
}
}
object "trunk_lean"
{
bool "allow_diagonal_growth"
"lean_height"
"lean_steps"
}
block_reference "trunk_block"
object "branches" : opt
{
"branch_length"
"branch_position"
chance_information "branch_chance"
object "branch_canopy" : opt
{
object "acacia_canopy" : opt
{
int "canopy_size"<1-*>
block_reference "leaf_block"
bool "simplify_canopy" : opt
}
object "canopy" : opt
{
object "canopy_offset"
{
int "min"
int "max"
}
int "min_width"<0-*> : opt
object "canopy_slope" : opt
{
int "rise"<1-*> : opt
int "run"<1-*> : opt
}
chance_information "variation_chance" : opt
array "variation_chance" : opt
{
chance_information "<any array element>" : opt
}
block_reference "leaf_block"
object "canopy_decoration" : opt
{
chance_information "decoration_chance"
block_reference "decoration_block" : opt
int "num_steps" : opt
enumerated_value "step_direction"<"down", "up", "out", "away"> : opt
}
}
object "fancy_canopy" : opt
{
int "height"<1-*>
int "radius"<0-*>
block_reference "leaf_block"
}
object "mega_canopy" : opt
{
"canopy_height"
int "base_radius"<0-*>
int "core_width"<1-*> : opt
bool "simplify_canopy" : opt
block_reference "leaf_block"
}
object "mega_pine_canopy" : opt
{
"canopy_height"
int "base_radius"<0-*>
float "radius_step_modifier"<0.000000-*>
int "core_width"<1-*> : opt
block_reference "leaf_block"
}
object "pine_canopy" : opt
{
"canopy_height"
int "base_radius"<1-*>
block_reference "leaf_block"
}
object "roofed_canopy" : opt
{
int "canopy_height"<3-*>
int "core_width"<1-*>
int "outer_radius"<0-*>
int "inner_radius"<0-*>
block_reference "leaf_block"
}
object "spruce_canopy" : opt
{
"lower_offset"
"upper_offset"
"max_radius"
block_reference "leaf_block"
}
}
}
object "trunk_decoration" : opt
{
chance_information "decoration_chance"
block_reference "decoration_block" : opt
int "num_steps" : opt
enumerated_value "step_direction"<"down", "up", "out", "away"> : opt
}
}
object "fallen_trunk" : opt
{
"log_length"
"stump_height" : opt
"height_modifier" : opt
block_reference "trunk_block"
feature_reference "log_decoration_feature" : opt
object "trunk_decoration" : opt
{
chance_information "decoration_chance"
block_reference "decoration_block" : opt
int "num_steps" : opt
enumerated_value "step_direction"<"down", "up", "out", "away"> : opt
}
}
object "fancy_trunk" : opt
{
object "trunk_height"
{
int "base"<1-*>
int "variance"<1-*>
float "scale"
}
int "trunk_width"<1-*>
object "branches"
{
float "slope"
float "density"
float "min_altitude_factor"<0.000000-1.000000>
}
block_reference "trunk_block" : opt
float "width_scale"<0.000000-*>
float "foliage_altitude_factor"<0.000000-1.000000>
}
object "mega_trunk" : opt
{
int "trunk_width"
object "trunk_height"
{
int "base"<1-*>
array "intervals" : opt
{
int "<any array element>"<1-*> : opt
}
}
block_reference "trunk_block"
object "trunk_decoration" : opt
{
chance_information "decoration_chance"
block_reference "decoration_block" : opt
int "num_steps" : opt
enumerated_value "step_direction"<"down", "up", "out", "away"> : opt
}
object "branches" : opt
{
int "branch_length"<1-*>
float "branch_slope"
"branch_interval"
object "branch_altitude_factor"
{
float "min"<0.000000-1.000000>
float "max"<0.000000-1.000000>
}
object "branch_canopy" : opt
{
object "acacia_canopy" : opt
{
int "canopy_size"<1-*>
block_reference "leaf_block"
bool "simplify_canopy" : opt
}
object "canopy" : opt
{
object "canopy_offset"
{
int "min"
int "max"
}
int "min_width"<0-*> : opt
object "canopy_slope" : opt
{
int "rise"<1-*> : opt
int "run"<1-*> : opt
}
chance_information "variation_chance" : opt
array "variation_chance" : opt
{
chance_information "<any array element>" : opt
}
block_reference "leaf_block"
object "canopy_decoration" : opt
{
chance_information "decoration_chance"
block_reference "decoration_block" : opt
int "num_steps" : opt
enumerated_value "step_direction"<"down", "up", "out", "away"> : opt
}
}
object "fancy_canopy" : opt
{
int "height"<1-*>
int "radius"<0-*>
block_reference "leaf_block"
}
object "mega_canopy" : opt
{
"canopy_height"
int "base_radius"<0-*>
int "core_width"<1-*> : opt
bool "simplify_canopy" : opt
block_reference "leaf_block"
}
object "mega_pine_canopy" : opt
{
"canopy_height"
int "base_radius"<0-*>
float "radius_step_modifier"<0.000000-*>
int "core_width"<1-*> : opt
block_reference "leaf_block"
}
object "pine_canopy" : opt
{
"canopy_height"
int "base_radius"<1-*>
block_reference "leaf_block"
}
object "roofed_canopy" : opt
{
int "canopy_height"<3-*>
int "core_width"<1-*>
int "outer_radius"<0-*>
int "inner_radius"<0-*>
block_reference "leaf_block"
}
object "spruce_canopy" : opt
{
"lower_offset"
"upper_offset"
"max_radius"
block_reference "leaf_block"
}
}
}
}
object "trunk" : opt
{
"trunk_height"
"height_modifier" : opt
block_reference "trunk_block"
object "trunk_decoration" : opt
{
chance_information "decoration_chance"
block_reference "decoration_block" : opt
int "num_steps" : opt
enumerated_value "step_direction"<"down", "up", "out", "away"> : opt
}
}
object "acacia_canopy" : opt
{
int "canopy_size"<1-*>
block_reference "leaf_block"
bool "simplify_canopy" : opt
}
object "canopy" : opt
{
object "canopy_offset"
{
int "min"
int "max"
}
int "min_width"<0-*> : opt
object "canopy_slope" : opt
{
int "rise"<1-*> : opt
int "run"<1-*> : opt
}
chance_information "variation_chance" : opt
array "variation_chance" : opt
{
chance_information "<any array element>" : opt
}
block_reference "leaf_block"
object "canopy_decoration" : opt
{
chance_information "decoration_chance"
block_reference "decoration_block" : opt
int "num_steps" : opt
enumerated_value "step_direction"<"down", "up", "out", "away"> : opt
}
}
object "fancy_canopy" : opt
{
int "height"<1-*>
int "radius"<0-*>
block_reference "leaf_block"
}
object "mega_canopy" : opt
{
"canopy_height"
int "base_radius"<0-*>
int "core_width"<1-*> : opt
bool "simplify_canopy" : opt
block_reference "leaf_block"
}
object "mega_pine_canopy" : opt
{
"canopy_height"
int "base_radius"<0-*>
float "radius_step_modifier"<0.000000-*>
int "core_width"<1-*> : opt
block_reference "leaf_block"
}
object "pine_canopy" : opt
{
"canopy_height"
int "base_radius"<1-*>
block_reference "leaf_block"
}
object "roofed_canopy" : opt
{
int "canopy_height"<3-*>
int "core_width"<1-*>
int "outer_radius"<0-*>
int "inner_radius"<0-*>
block_reference "leaf_block"
}
object "spruce_canopy" : opt
{
"lower_offset"
"upper_offset"
"max_radius"
block_reference "leaf_block"
}
}
object "minecraft:weighted_random_feature" : opt
{
object "description"
{
string "identifier"
}
array "features"[1,*]
{
array "<any array element>"[2] : opt
{
feature_reference "[0..0]"
float "[1..1]"
}
}
}
}
Attaching features#
Features must be attached to at least one biome in order to show up in the world. During world generation, biomes attempt to place their attached features chunk-by-chunk. Features can be attached in two ways:1) Via a feature rule definition2) Via the "minecraft:forced_features" biome component
Feature rules#
Feature rules are separate JSON definition files found in the "feature_rules" subfolder of behavior packs. Feature rules follow the same filename rules as features. Each feature rule controls exactly one feature and serves as the root of a chain of feature data. To attach a feature to a biome with a feature rule, the "conditions" object must include the "minecraft:biome_filter" field. This is a list of filter tests that are performed on each biome to determine if the feature should be attached. Most relevant is the "has_biome_tag" test.
Here is a sample feature rule
{
"format_version": "1.13.0",
"minecraft:feature_rules": {
"description": {
"identifier": "minecraft:birch_forest_surface_trees_feature",
"places_feature": "minecraft:legacy:birch_forest_tree_feature"
},
"conditions": {
"placement_pass": "surface_pass",
"minecraft:biome_filter": [
{
"test": "has_biome_tag",
"operator": "==",
"value": "forest"
},
{
"all_of": [
{
"test": "has_biome_tag",
"operator": "==",
"value": "birch"
},
{
"test": "has_biome_tag",
"operator": "!=",
"value": "mutated"
}
]
}
]
},
"distribution": {
"iterations": 1,
"x": 0,
"y": 0,
"z": 0
}
}
}
Feature rule schema#
{
version "format_version"
object "minecraft:feature_rules"
{
object "description"
{
string "identifier"
feature_reference "places_feature"
}
object "conditions"
{
enumerated_value "placement_pass"<"first_pass", "before_underground_pass", "underground_pass", "after_underground_pass", "before_surface_pass", "surface_pass", "after_surface_pass", "before_sky_pass", "sky_pass", "after_sky_pass", "final_pass">
biome_filter_group "minecraft:biome_filter" : opt
}
object "distribution"
{
molang "iterations"
object "scatter_chance" : opt
{
int "numerator"<1-*>
int "denominator"<1-*>
}
molang "scatter_chance" : opt
enumerated_value "coordinate_eval_order"<"xyz", "xzy", "yxz", "yzx", "zxy", "zyx"> : opt "xzy".
molang "x" : opt
object "x" : opt
{
enumerated_value "distribution"<"uniform", "gaussian", "inverse_gaussian", "fixed_grid", "jittered_grid">
int "step_size"<1-*> : opt
int "grid_offset"<0-*> : opt
array "extent"[2]
{
molang "[0..0]" : opt
molang "[1..1]" : opt
}
}
molang "z" : opt
object "z" : opt
{
enumerated_value "distribution"<"uniform", "gaussian", "inverse_gaussian", "fixed_grid", "jittered_grid">
int "step_size"<1-*> : opt
int "grid_offset"<0-*> : opt
array "extent"[2]
{
molang "[0..0]" : opt
molang "[1..1]" : opt
}
}
molang "y" : opt
object "y" : opt
{
enumerated_value "distribution"<"uniform", "gaussian", "inverse_gaussian", "fixed_grid", "jittered_grid">
int "step_size"<1-*> : opt
int "grid_offset"<0-*> : opt
array "extent"[2]
{
molang "[0..0]" : opt
molang "[1..1]" : opt
}
}
}
}
}
Forced features#
Features attached with the second method are called "forced" or "explicit" features. Unlike feature rules, forced features are not defined in separate JSON files. Instead, they are specified in the existing biome JSON definitions via the "minecraft:forced_features" component. Like feature rules, this component includes fields that define when features should be placed ("placement_pass") and how they should be scattered ("distribution"). For more information about biome components (including the complete JSON schema), consult the biome documentation.