/** @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);
}
/**
* Creates a new ParabolaEnemy
*
* @param startPoint where the ParabolaEnemy will appear
* @param midPoint a point between the startPoint and the endPoint (in x coordinate), specifying
* the look of the movement curve
* @param endPosition where the ParabolaEnemy will move towards
* @param weaponName what kind of weapon this enemy will wield
*/
public ParabolaEnemy(
Position startPoint, Position midPoint, Position endPoint, ObjectName weaponName) {
super(
new EnemyShip(startPoint, SHIP_SIZE, SHIP_SIZE, HITPOINTS, ObjectName.PARABOLA_ENEMYSHIP),
WeaponFactory.getNewWeapon(weaponName));
if (!midPointIsInMiddle(startPoint.getX(), midPoint.getX(), endPoint.getX())) {
throw new IllegalArgumentException(
"MidPoints x-coordinate must lie between startPoints"
+ " x-coordinate and endPoints x-coordinate");
}
this.startPoint = startPoint;
this.midPoint = midPoint;
this.endPoint = endPoint;
// negate speed if the curve goes from right to left
if (endPoint.getX() - startPoint.getX() < 0) {
speed *= -1;
}
}
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--;
}
}
}
