# Step-by-Step Guide: Navigating the Extended Version of Battleship

By [coco binner](https://paragraph.com/@coco-binner) · 2023-11-11

---

Battleship stands as a classic naval strategy game where two players aim to sink each other's concealed ships by deducing their locations on a grid. This guide is tailored for the extended edition of Battleship, integrating additional features and implemented using the Leo programming language within the Aleo development environment.

The game itself — Github

Step 1: Preparing the Game Environment Prior to commencing the gameplay, it's crucial to configure your development environment. This particular game is constructed using Leo, a programming language designed for crafting private applications on Aleo.

*   Install Leo if not already done.
    
*   Execute `leo build` to compile the Leo program.
    

Step 2: Initiating Players Every player must possess an Aleo account equipped with a private key, view key, and address. You can opt for the provided player accounts or generate your own. Safeguard these keys and addresses as they serve as representations of Player 1 and Player 2.

Adjust the `program.json` file with Player 1's private key and address.

Step 3: Player 1 Positions Ships Player 1 sets up their board using the `leo run initialize_board` command, incorporating valid ship bitstrings and Player 2’s address. The result is a `board_state.record` exclusively owned by Player 1.

Step 4: Player 1 Extends the Game Offer to Player 2 Player 1 extends a game invitation to Player 2 by executing `leo run offer_battleship` with their `board_state.record`. The outcome includes an updated `board_state.record` featuring the `game_started` flag activated, accompanied by a `move.record` designated for Player 2.

Step 5: Player 2 Deploys Ships Shift the `program.json` file to employ Player 2’s keys. Subsequently, Player 2 crafts their board with the `leo run initialize_board` command, designating Player 1’s address as the adversary.

Step 6: Player 2 Acknowledges the Game Player 2 acknowledges the game offer by initiating `leo run start_battleship` with their `board_state.record` and the `move.record` from Player 1. The output confirms the game initiation, and Player 1 receives a `move.record`.

Step 7: Player 1 Initiates the First Move Revert to Player 1’s keys in `program.json`. Player 1 executes the initial move using `leo run play` with their `board_state.record`, `move.record`, and a fire coordinate.

Step 8: Player 2 Takes Their Turn Switch to Player 2’s keys. Player 2 responds by executing the identical `leo run play` command with their updated records and a fresh fire coordinate.

Step 9: Progressing Through the Game Players maintain the sequence of turns, utilizing the `leo run play` command with their respective `board_state.record` and `move.record`. Each turn's output will update the game state, detailing hits, misses, and played tiles.

Step 10: Securing Victory The game persists until one player successfully sinks all of the opponent's ships. The game state meticulously monitors the progress, and the victor is determined when all tiles corresponding to the opponent’s ships are hit.

Additional Notes:

*   Players should prudently manage their `board_state.record` and `move.record`.
    
*   Regular updates to the `played_tiles` bitstring are necessary with each move to prevent duplicate coordinates.
    
*   The `hits_and_misses` field within the `move.record` signifies whether the last shot was a hit or a miss.
    

Conclusion This expanded edition of Battleship on Aleo introduces heightened privacy and strategy, leveraging the Leo programming language to provide a secure and engaging gaming experience. Follow this guide to initiate your game, strategize your moves, and participate in naval warfare with the innovative addition of privacy-preserving technology.

---

*Originally published on [coco binner](https://paragraph.com/@coco-binner/step-by-step-guide-navigating-the-extended-version-of-battleship)*