> For the complete documentation index, see [llms.txt](https://docs.divergence-protocol.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.divergence-protocol.com/technical-reference/periphery/params.md).

# Params

## CreateAndInitBattleParams

The parameters for creating and initializing a battle

```javascript
struct CreateAndInitBattleParams {
    BattleKey bk;
    uint160 sqrtPriceX96;
}
```

**Params:**

| **Name**     | **Type**  | **Description**                                   |
| ------------ | --------- | ------------------------------------------------- |
| bk           | BattleKey | The battle key containing a pool's specifications |
| sqrtPriceX96 | uint160   | The starting sqrtPrice of the pool                |

## AddLiquidityParams

The parameters for adding liquidity to a battle

```javascript
struct AddLiqParams {
    BattleKey battleKey;
    address recipient;
    int24 tickLower;
    int24 tickUpper;
    LiquidityType liquidityType;
    uint128 amount;
    uint256 deadline;
}
```

**Params:**

| **Name**      | **Type**      | **Description**                                                                        |
| ------------- | ------------- | -------------------------------------------------------------------------------------- |
| battleKey     | BattleKey     | The battle key                                                                         |
| recipient     | address       | The address that receives the NFT                                                      |
| tickLower     | int24         | The lower tick of the position                                                         |
| tickUpper     | int24         | The upper tick of the position                                                         |
| liquidityType | LiquidityType | Specifies the type of liquidity seeded to the position is collateral, Spear, or Shield |
| amount        | uint128       | The amount of collateral, Spear or Shield to add                                       |
| deadline      | uint256       | The deadline of the transaction                                                        |

## TradeParams

Represents the parameters for a trade

```javascript
struct TradeParams {
    BattleKey battleKey;
    TradeType tradeType;
    uint256 amountSpecified;
    address recipient;
    uint256 amountOutMin;
    uint160 sqrtPriceLimitX96;
    uint256 deadline;
}
```

**Params:**

| **Name**          | **Type**  | **Description**                                                                  |
| ----------------- | --------- | -------------------------------------------------------------------------------- |
| battleKey         | BattleKey | The battle key                                                                   |
| tradeType         | TradeType | The trade type (buy Spear or buy Shield)                                         |
| amountSpecified   | uint256   | How much collateral input or SToken output amount to be swapped in/out           |
| recipient         | address   | The address to receive the output of the swap                                    |
| amountOutMin      | uint256   | The minimum amount of Spear or Shield output to receive                          |
| sqrtPriceLimitX96 | uint160   | The maximum/minimum Q64.96 sqrtPrice limit. When reached, the trade is completed |
| deadline          | uint256   | The deadline of the transaction                                                  |


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