Major Use Cases

During a game

• Change Direction of Vehicle: This use case is simply the rotation of the ship. By pressing the right or left arrow keys, the user can turn his vehicle clockwise or counterclockwise respectively.
• Change Speed of Vehicle: Through this use case, the user will be able to change the acceleration of the ship. He is able toaccelerate forward, stop acceleratin or accelerate backwards. The ship however is still limited by a maximum speed.
• Shoot Torpedo: Through this use case, the user is able to create a accelerating torpedo in front of his ship. The torpedo starts as fast as the ship that creates it and accelerates until it hits the maximum speed. If the torpedo hits another ship, points will be added to the player that shoot it. The torpedo however has a limited lifespan.
• Type Message: This use case allows the user to send messages to the other players during the game. Since the game is not paused however, the user should either type fast or use one of the prepared messages.