# Space Laboratory - 0G Assembler

A row has exactly one item input. A part delivered to a Space Laboratory that matches it queues the first matching row by `order`. Each tick adds the number of delivered 0G Assemblers divided by `duration` to progress; on completion every output position is rolled.

Matching skips the [changed-component check](https://movblock.mov/ntm-next/26.3/wiki/ingredients-and-components.md#changed-component-state), so a frequency-tuned part matches; `components` and `predicates` on the input still apply. A queued row missing from the recipe table is dropped without output, and the queue continues.

## Fields

| Field | Meaning and default | Range |
| - | - | - |
| `type` | Selects the `hbm:space_assembler` 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. | |
| `input_items.ingredient` | Item ID, item tag, or loader ingredient object. | |
| `input_items.count` (Optional) | Items required from one stack; default 1. The item stack limit bounds a usable count. | `[1, i32::MAX]` |
| `input_items.components` (Optional) | Exact item-component values. | |
| `input_items.predicates` (Optional) | Item-component predicates. | |
| `output_items` | Fixed or weighted item-output positions; defaults to an empty list. | |
| `output_items.item ID` | Fixed output: String form for one item. | |
| `output_items.id` | Item ID in a stack object. | |
| `output_items.count` (Optional) | Stack size; default 1. | `[1, 99]` |
| `output_items.components` (Optional) | Item-component values. | |
| `output_items.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 |
| `output_items.data` | Weighted choice: Stack object or an empty object for no output. | |
| `output_items.weight` | Relative selection weight; a positive total selects an output. | `[0, i32::MAX]` each; $\sum_i w_i \le \texttt{i32::MAX}$ |
| `duration` | Process duration in ticks; defaults to 0. | `i32` |
| `order` (Optional) | Sort position within the recipe table; lower values first, default 2147483647. | `i32` |

## Example

Source path: `data/hbm/recipe/space_assembler/space.crystalcircuit.json`

```json
{
  "type": "hbm:space_assembler",
  "duration": 3600,
  "input_items": [
    {
      "ingredient": "hbm:orbital_assembly"
    }
  ],
  "order": 0,
  "output_items": [
    "hbm:circuit_crystal"
  ]
}
```