Attack mode: work started. Music update.

When approaching an enemy submarine, the attack mode is activated:
1. Enabling this mode is accompanied by the appearance of a blinking red cursor - a target pointing to the enemy.
2. Also, the musical accompaniment changes harmoniously, which becomes somewhat more disturbing and tense.

If you have at least 3 action points, you can launch a volley at the enemy with a torpedo. Your turn always ends in a volley. The torpedo inflicts certain damage on the enemy.

The return fire of the enemy submarine has not yet been implemented.