> For the complete documentation index, see [llms.txt](https://trident-cas.sabn.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://trident-cas.sabn.xyz/games/dice.md).

# Dice

### Events

#### Client -> Server

**`dice:roll`**

Places a bet and rolls the dice instantly.

* **Payload**:

  ```json
  {
      "amount": 10.5, // Bet amount (USD)
      "percentage": 50, // Target percentage (1 to 99)
      "way": "over", // "over" or "under"
      "clientSeed": "user-provided-seed"
  }
  ```
* **Response**: `dice:roll` (Result)

#### Server -> Client

**`dice:roll` (Response)**

* **Payload (Success)**:

  ```json
  {
      "status": true,
      "won": true, // true if the player won, false if lost
      "rolled": 65.42, // The actual percentage rolled (0.00 to 99.99)
      "pf": {
          "serverSeed": "original-secret-hex", // Full server seed revealed immediately
          "serverSeedCommitment": "hash", // Hash of server seed
          "clientSeed": "user-provided-seed",
          "nonce": 1, // Deterministic random nonce
          "publicSeed": "block-id" // External EOS block hash
      }
  }
  ```
* **Payload (Error)**:

  ```json
  {
      "status": false,
      "message": "Insufficient balance" // Or "Invalid bet parameters", etc.
  }
  ```

***

### Game Logic Details

1. **Provably Fair**:
   * Uses `serverSeed`, `clientSeed`, `nonce`, and `publicSeed` (EOS block hash).
   * Derives a deterministic `Uint32` value using HMAC-SHA256.
   * Converts the integer to a float percentage between `0.00` and `99.99`.
   * Because Dice is resolved instantly in a single action, the `serverSeed` is revealed immediately in the `dice:roll` payload (no need for a separate `dice:proof` event).
2. **Concurrency Protection**:
   * Rolls are protected with a per-user `withQueue` sequential lock. This ensures that rapid-fire requests do not bypass balance deduction checks, preventing negative balances.
   * Rate limits are natively applied.


---

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