/** spawns a pickup for every enemy marked as "should spawn a pickup" */
private void spawnPickups() {
for (IEnemy enemy : enemyManager.getEnemies()) {
if (enemy.shouldSpawnPickup()) {
pickupManager.addPickup(
new WeaponPickup(enemy.getShip().getPositionClone(), enemy.getWeapon().getName()));
}
}
}
/**
* Resets the game
*
* @param difficulty Which difficulty it should be reset to.
*/
public void reset(Difficulty difficulty) {
bulletManager.clearAllBullets();
enemyManager.clearAllEnemies();
pickupManager.clearAllPickups();
enemySpawner = new EnemySpawner(new RandomWaveList(difficulty));
enemySpawner.addPropertyChangeListener(enemyManager);
player.reset();
player.giveWeapon(new BasicWeapon(bulletManager));
}
/**
* Run an update on the model.
*
* @param input Input variables to the model.
* @param timeElapsed Time in seconds since last update.
*/
public void update(final ModelInput input, final float timeElapsed) {
player.update(input, timeElapsed);
for (AbstractBullet bullet : bulletManager.getBullets()) {
bullet.doMovement(timeElapsed);
}
for (AbstractEnemy enemy : enemyManager.getEnemies()) {
enemy.update(timeElapsed);
}
for (WeaponPickup pickup : pickupManager.getPickups()) {
pickup.doMovement(timeElapsed);
}
enemySpawner.update(timeElapsed);
checkCollisions();
spawnPickups();
enemyManager.clearDeadEnemies();
bulletManager.clearBulletsOffScreen();
pickupManager.clearPickupsOffScreen();
}
/** @param difficulty Which difficulty level the game model should be on. */
public GameModel(Difficulty difficulty) {
bulletManager = new BulletManager();
enemyManager = new EnemyManager();
pickupManager = new PickupManager();
WeaponFactory.initialize(bulletManager);
enemySpawner = new EnemySpawner(new RandomWaveList(difficulty));
enemySpawner.addPropertyChangeListener(enemyManager);
player = new Player(PlayerID.PLAYER1, bulletManager);
pcs = new PropertyChangeSupport(this);
// Player listens when enemies are killed
enemyManager.addPropertyChangeListener(player);
}
private void checkCollisions() {
final List<IBullet> playerBullets = bulletManager.getBulletsFrom(PlayerID.PLAYER1);
final List<IBullet> enemyBullets = bulletManager.getBulletsFrom(PlayerID.ENEMY);
// Check player bullets against enemies
for (IBullet b : playerBullets) {
for (IEnemy e : enemyManager.getEnemies()) {
if (b.collidesWith(e.getShip())) {
e.getShip().receiveDamage(b.getDamage());
pcs.firePropertyChange(Constants.EVENT_ENEMY_DAMAGED, null, e.getShip());
b.markForRemoval();
}
}
}
// Check enemy bullets against player
if (!player.isInvincible()) {
for (IBullet b : enemyBullets) {
if (b.collidesWith(player.getShip())) {
player.getShip().receiveDamage(b.getDamage());
pcs.firePropertyChange(Constants.EVENT_ENTITY_INVINCIBLE, null, player);
b.markForRemoval();
break;
}
}
}
// Check Items against player
for (int i = 0; i < pickupManager.getPickups().size(); i++) {
WeaponPickup wp = pickupManager.getPickups().get(i);
if (wp.collidesWith(player.getShip())) {
player.giveWeapon(WeaponFactory.getNewWeapon(wp.getObjectName()));
pickupManager.removePickup(i);
i--;
}
}
}