# Hologram Configurations

Holograms group displays and are saved in `holograms/<name>.json`. They define position, properties, and display list.

## Format

```json
{
  "displays": [
    // Array of display lines
    {
      "name": "display_id", // Display from displays/ or API
      "offset": [0.0, 0.0, 0.0] // Relative position [x, y, z]
    }
  ],
  "position": {
    "world": "minecraft:overworld", // Dimension ID
    "x": 100.5,
    "y": 64.0,
    "z": 200.0
  },
  "rotation": [0.0, 0.0, 0.0], // Hologram rotation
  "leftRotation": [0.0, 0.0, 0.0, 1.0], // Left rotation (quaternion)
  "rightRotation": [0.0, 0.0, 0.0, 1.0], // Right rotation (quaternion)
  "scale": [1.0, 1.0, 1.0], // Overall scale
  "billboardMode": "center", // fixed, horizontal, vertical, center
  "updateRate": 20, // Ticks
  "viewRange": 48.0, // Blocks (1-128)
  "conditionalPlaceholder": "%player:group% == admin" // Optional
}
```

## Properties

* **displays**: List of objects with `name` (display ID) and `offset` \[x,y,z].
* **position**: Object with `world` (string), `x/y/z` (floats).
* **rotation/scale**: Arrays \[x, y, z].
* **leftRotation/rightRotation**: Arrays \[x, y, z, w] (quaternions).
* **billboardMode**: String (applies to displays).
* **updateRate**: Int (lower = more frequent updates).
* **viewRange**: Double (visibility distance).
* **conditionalPlaceholder**: String or omitted (always visible).

## Integration with PlaceholderAPI

Use placeholders in display lines or conditions (e.g., `%player:health%`). Holograms refresh based on updateRate.

## Example

`holograms/welcome.json`:

```json
{
  "displays": [
    {
      "name": "welcome_text",
      "offset": [0, 0, 0]
    },
    {
      "name": "welcome_item",
      "offset": [0, -0.5, 0]
    }
  ],
  "position": {
    "world": "minecraft:overworld",
    "x": 0,
    "y": 100,
    "z": 0
  },
  "scale": [1, 1, 1],
  "billboardMode": "center",
  "updateRate": 20,
  "viewRange": 32,
  "conditionalPlaceholder": null
}
```

See Overview for global setup, [Display Configurations](https://github.com/Furqit/HoloDisplays/blob/main/docs/configuration/broken-reference/README.md) for referenced displays.


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