I am creating a 2D Java game that will have two players going against each other for the most points. The issue I am running into is when either player fires a bullet that player takes damage. Currently, the bullet is doing damage, but it should not be damaging itself to fire. Originally I was using the method intersect to detect the collision, but the results were basically the same with the exception of the players taking damage faster.

I believe my issue is I need a way to set who owns the bullet, but my thought process is I can use the enumeration class to have the ID set to Player and Player 2. This process has been working for collisions of a bullet at the enemy, bullet at the wall, and enemy at the player. I provided my attempt at handling the collision of the bullet into the player and also the method that creates the bullet for the player that shot.

    for (int i=0; i<handler.object.size(); i  ) {
        GameObject tempObject = handler.object.get(i);

        if (tempObject.getId() == ID.Bullet) {
            // Player 1 hit with bullet
            if (id == ID.Player) {
                if (getBounds().contains(tempObject.getBounds())) {
                    System.out.println("Player 1 Health: "   game.hpPlayer1);
                    game.hpPlayer1--;
                    System.out.println("Player 1 Health: "   game.hpPlayer1);
                }
            }
            // Player 2 hit with bullet
            if (id == ID.Player2) {
                if (getBounds().contains(tempObject.getBounds())) {
                    System.out.println("Player 2 Health: "   game.hpPlayer2);
                    game.hpPlayer2--;
                    System.out.println("Player 2 Hit: "   game.hpPlayer2);
                }
            }
        }
    }

    // Creates the bullet for the player that shot
    private void shootBullet() {
        // Limits the tank to one shot per second
        if (System.currentTimeMillis() - LastFired > 1000) {
            // Player 1
            if (id == ID.Player) {
                if (game.ammoPlayer1 >= 1) {
                    handler.addObject(new Bullet(x   20, y   19, ID.Bullet, handler, ss, angle));
                    LastFired = System.currentTimeMillis();
                    game.ammoPlayer1--;
                }
            }
            // Player 2
            if (id == ID.Player2) {
                if (game.ammoPlayer2 >= 1) {
                    handler.addObject(new Bullet(x   20, y   19, ID.Bullet, handler, ss, angle));
                    LastFired = System.currentTimeMillis();
                    game.ammoPlayer2--;
                }
            }
        }
    }