과제

Let's make the boss animate continuously. To do this, we need to give the setAnimatedView method an isLoopAnimation parameter responsible for indicating whether the animation should loop. This parameter is used to properly set the loopAnimation field. If the loopAnimation field is true, the nextFra

The game is lost not only if the player's ship is destroyed, but also if the enemy fleet reaches the player's ship. To determine the coordinates of the lower edge of the enemy fleet, we'll add a getBottomBorder() method. If all the enemies are destroyed, the player wins. For convenience, we'll add

At this stage, we'll add scorekeeping to the game. The player gets 15 points for each ordinary ship and 100 points for the boss. It will be most convenient to keep score in the checkHit() method, after reworking it a little. To store the total score, we'll add a score variable in the SpaceInvadersG

Congratulations! The game is done! Run it and see what happens. If you have time and motivation, you can improve the game by adding some features of your own. For example: - add other types of ships; - change the number of cannons on the ships; - add new types of projectiles; - change the scoring s