Fortress struggle

Hi, I want to introduce you to a small beautiful game "fortress struggle". The game is written in Java. The game is played on one keyboard.Left player-press A, right-L. there Are two sides: red and blue (player 1 and player 2). On top there is a designation of the attacker and the defender. The attacker must catch the moment for the shot. If the enemy has time to defend himself, then the side changes. The defender has 3 attempts to put a protective wall, then there is a recharge. I hope you will...