# Resource packs

Source: https://tehoclient.dev/modules/packs
SDK: 1.0.0

Big resource packs make joins slow. With a pack hint, Teho downloads your pack in the background before the server asks for it. When vanilla's pack request arrives, the pack is already in Teho's 250 MB cache and applies straight away.

## Hint your pack

The easiest way is config:

```yaml
resource-pack:
  url: "https://cdn.skyline.gg/skyline-v12.zip"
  sha1: "0123456789abcdef0123456789abcdef01234567"
  required: false
```

From code, send the hint as soon as the player is ready, and keep sending the pack the vanilla way as usual:

```java
teho.pack().hint("skyline-v12",
        "https://cdn.skyline.gg/skyline-v12.zip",
        "0123456789abcdef0123456789abcdef01234567",
        48_000_000L,
        true,
        "Skyline needs its texture pack");
```

The arguments are an id, the URL, the pack's SHA-1, its size in bytes, whether it is required, and the prompt text.

## Hear back

`pack().lastState()` and `TehoListener.onPackStatus(player, sha1, state)` report how it went:

| `PackApi.State` | Meaning |
|---|---|
| `CACHED` | The pack was already in the cache. |
| `DOWNLOADED` | Teho fetched it ahead of the join. |
| `FAILED` | The download failed or the hash did not match. |
| `DECLINED` | The player declined the pack. |


1.7.10 has no server-pack hashes, so prefetch is skipped there and the pack loads the vanilla way.