Anvil

Placed anvils have tiers [1, 8] and a special tier 1,916,169.

Construction recipes

Inputs come from the player's main inventory; an input count totals across stacks. Each non-empty entry of each output position is granted independently, with probability equal to its weight divided by the position's total weight. When the lbsm condition holds and lbsm.unlock_anvil is enabled, tier and a tier_upper other than -1 load as 1.

Fields

Field	Meaning and default	Range
`type`	Selects the `hbm:anvil_construction` recipe format.
`name`Optional	Internal lookup name; defaults to the last segment of the recipe resource path.
`input_items`	Ordered counted item inputs; defaults to an empty list.
`ingredient`	Item ID, item tag, or loader ingredient object.
`count`Optional	Items required from one stack; default 1. The item stack limit bounds a usable count.	[1, \texttt{i32::MAX}]
`components`Optional	Exact item-component values.
`predicates`Optional	Item-component predicates.
`output_items`	Fixed or weighted item-output positions; defaults to an empty list.
`item ID`	Fixed output: String form for one item.
`id`	Item ID in a stack object.
`count`Optional	Stack size; default 1.	[1, 99]
`components`Optional	Item-component values.
`chance`Optional	Output chance; omit for a guaranteed output. Some machines roll each item of the stack separately.	Rounds to weight [1, 999] of 1000
`data`	Weighted choice: Stack object or an empty object for no output.
`weight`	Relative selection weight; a positive total selects an output.	[0, \texttt{i32::MAX}] each; \sum_i w_i \le \texttt{i32::MAX}
`order`Optional	Sort position within the recipe table; lower values first, default 2147483647.	\texttt{i32}
`overlay`	Anvil GUI category and badge: `none`, `construction`, `recycling`, or `smithing`. A `recycling` recipe is listed with its first input as icon.
`tier`Optional	Minimum anvil tier; default 0.	\texttt{i32}
`tier_upper`Optional	Maximum anvil tier; default -1, which leaves it unbounded.	\texttt{i32}

Example

Source path: data/hbm/recipe/anvil_construction/anvil.coal.json

{
  "type": "hbm:anvil_construction",
  "input_items": [
    {
      "ingredient": "#c:dusts/coal"
    }
  ],
  "order": 24,
  "output_items": [
    "minecraft:coal"
  ],
  "overlay": "smithing",
  "tier": 3
}

Smithing recipes

input_items holds two positions: 0 for the left slot and 1 for the right slot. The anvil applies the first matching row by order whose tier does not exceed its own.

`kind`	Left slot	Right slot	Result
`plain`	Matches position 0; consumes its `count`	Matches position 1; consumes its `count`	First `output_items` position
`hot`	As `plain`; a heated NTM item needs at least half heat and no component changes other than heat	As the left slot	As `plain`; a heated result takes the inputs' average heat
`mold`	Template, kept: exactly the position-0 `count`, matching `shape` when set, otherwise position 0; undamaged	Matches position 1; consumes its `count`	First `output_items` position
`poison`	Any food; consumes the position-0 `count`	Matches position 1; consumes its `count`	One left item with the red-pill additive when the right item is `hbm:pill_red`, otherwise cyanide; `output_items` is ignored
`rename`	Any item; consumes the position-0 `count`	Matches position 1 and has a custom name; kept	One left item with the right item's name; `output_items` is ignored

Fields

Field	Meaning and default	Range
`type`	Selects the `hbm:anvil_smithing` recipe format.
`name`Optional	Internal lookup name; defaults to the last segment of the recipe resource path.
`input_items`	Ordered counted item inputs; defaults to an empty list.
`ingredient`	Item ID, item tag, or loader ingredient object.
`count`Optional	Items required from one stack; default 1. The item stack limit bounds a usable count.	[1, \texttt{i32::MAX}]
`components`Optional	Exact item-component values.
`predicates`Optional	Item-component predicates.
`output_items`	Fixed or weighted item-output positions; defaults to an empty list.
`item ID`	Fixed output: String form for one item.
`id`	Item ID in a stack object.
`count`Optional	Stack size; default 1.	[1, 99]
`components`Optional	Item-component values.
`chance`Optional	Output chance; omit for a guaranteed output. Some machines roll each item of the stack separately.	Rounds to weight [1, 999] of 1000
`data`	Weighted choice: Stack object or an empty object for no output.
`weight`	Relative selection weight; a positive total selects an output.	[0, \texttt{i32::MAX}] each; \sum_i w_i \le \texttt{i32::MAX}
`order`Optional	Sort position within the recipe table; lower values first, default 2147483647.	\texttt{i32}
`tier`Optional	Minimum anvil tier; default 1.	\texttt{i32}
`kind`Optional	Smithing behavior: `plain`, `hot`, `mold`, `poison`, or `rename`; default `plain`.
`shapeless`Optional	For `plain` and `hot`, also matches with the slots swapped when true; default false.
`shape`Optional	For `mold`, the left slot matches any item in a `c` or `hbm` item tag whose path starts with `<shape>/`, in place of the position-0 ingredient.

Example

Source path: data/hbm/recipe/anvil_smithing/smith.ingot_gunmetal.json

{
  "type": "hbm:anvil_smithing",
  "input_items": [
    {
      "ingredient": "#c:ingots/copper"
    },
    {
      "ingredient": "#c:ingots/aluminum"
    }
  ],
  "order": 38,
  "output_items": [
    "hbm:ingot_gunmetal"
  ]
}

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Construction recipes

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Smithing recipes

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