---
title: Block Event
description: "Play 0x07, server → client."
---

`play` · `0x07` · **clientbound** (server → client)

Triggers a block-specific action at `location`, such as a note block playing, a piston extending or retracting, a chest lid opening, or a bell ringing. `byte1` and `byte2` are the action id and parameter; `blockId` identifies the block type. The client plays the matching animation or sound.

Sent by the server, read by the client. Listen for it with `client.on("BlockEvent", (data) => …)` on the receiving side.

## Fields

| Field | Type | Notes |
|---|---|---|
| `location` | Position | also `position` |
| `byte1` | UByte |  |
| `byte2` | UByte |  |
| `blockId` | VarInt |  |

## Send it

```ts
await client.sendPacket("BlockEvent", {
  location: /* Position */,
  byte1: /* UByte */,
  byte2: /* UByte */,
  blockId: /* VarInt */,
});
```

Field aliases listed under Notes are accepted as alternative keys when writing.

Source: [`src/Core/Versions/776/Packets/play/clientbound/BlockEvent.ts`](https://github.com/GDLev/mc-protocol/blob/master/src/Core/Versions/776/Packets/play/clientbound/BlockEvent.ts)