Reshenie na zadacha Alien so nasleduvanje

examples/src/main/java/mk/ukim/finki/np/av4/Alien.java

@@ -1,16 +1,37 @@
-package mk.ukim.finki.np.av4;
-
-public class Alien {
-    public static final int SNAKE_ALIEN = 0;
-    public static final int OGRE_ALIEN = 1;
-    public static final int MARSHMALLOW_MAN_ALIEN = 2;
-    public int type; // Stores one of the three above types
-    public int health; // 0=dead, 100=full strength
-    public String name;
-
-    public Alien(int type, int health, String name) {
-        this.type = type;
-        this.health = health;
-        this.name = name;
-    }
-}
+
+public abstract class Alien {
+
+	private int health;
+	private String name;
+
+	public Alien(){
+		this.health = 100;
+		this.name = "Anonymous";
+	}
+
+	public Alien(int health, String name) {
+		this.health = health; // 0-dead, 100-full_strength
+		this.name = name;
+	}
+
+	public int getHealth() {
+		return health;
+	}
+
+	public void setHealth(int health) {
+		this.health = health;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public abstract String getType();
+
+	public abstract int getDamage();
+
+}

examples/src/main/java/mk/ukim/finki/np/av4/AlienPack.java

@@ -1,32 +1,30 @@
-package mk.ukim.finki.np.av4;
 
 public class AlienPack {
-    private Alien[] aliens;
 
-    public AlienPack(int numAliens) {
-        aliens = new Alien[numAliens];
-    }
+	private Alien[] aliens;
 
-    public void addAlien(Alien newAlien, int index) {
-        aliens[index] = newAlien;
-    }
+	public AlienPack() {
+		aliens = new Alien[0];
+	}
 
-    public Alien[] getAliens() {
-        return aliens;
-    }
+	public AlienPack(int numAliens) {
+		aliens = new Alien[numAliens];
+	}
+
+	public void addAlien(Alien newAlien, int index){
+		aliens[index] = newAlien;
+	}
+
+	public Alien[] getAliens() {
+		return aliens;
+	}
+
+	public int calculateDamage() {
+		int damage = 0;
+		for (Alien alien : aliens) {
+			damage += alien.getDamage();
+		}
+		return damage;
+	}
 
-    public int calculateDamage() {
-        int damage = 0;
-        for (int i = 0; i < aliens.length; i++) {
-            if (aliens[i].type == Alien.SNAKE_ALIEN) {
-                damage += 10;// Snake does 10 damage
-            } else if (aliens[i].type == Alien.OGRE_ALIEN) {
-                damage += 6;// Ogre does 6 damage
-            } else if (aliens[i].type == Alien.MARSHMALLOW_MAN_ALIEN) {
-                damage += 1;
-                // Marshmallow Man does 1 damage
-            }
-        }
-        return damage;
-    }
 }

examples/src/main/java/mk/ukim/finki/np/av4/Marshmallow.java

@@ -0,0 +1,22 @@
+
+public class Marshmallow extends Alien {
+
+	public Marshmallow() {
+		super();
+	}
+
+	public Marshmallow(int health, String name) {
+		super(health, name);
+	}
+
+	@Override
+	public String getType() {
+		return "Marshmallow";
+	}
+
+	@Override
+	public int getDamage() {
+		return 1;
+	}
+
+}

examples/src/main/java/mk/ukim/finki/np/av4/Ogre.java

@@ -0,0 +1,22 @@
+
+public class Ogre extends Alien {
+
+	public Ogre() {
+		super();
+	}
+
+	public Ogre(int health, String name) {
+		super(health, name);
+	}
+
+	@Override
+	public String getType() {
+		return "Ogre";
+	}
+
+	@Override
+	public int getDamage() {
+		return 6;
+	}
+
+}

examples/src/main/java/mk/ukim/finki/np/av4/Snake.java

@@ -0,0 +1,22 @@
+
+public class Snake extends Alien {
+
+	public Snake() {
+		super();
+	}
+
+	public Snake(int health, String name) {
+		super(health, name);
+	}
+
+	@Override
+	public String getType() {
+		return "Snake";
+	}
+
+	@Override
+	public int getDamage() {
+		return 10;
+	}
+
+}

examples/src/main/java/mk/ukim/finki/np/av4/TestAliens.java

@@ -0,0 +1,18 @@
+
+public class TestAliens {
+
+	public static void main(String[] args) {
+		AlienPack aliens = new AlienPack(7);
+		int i = 0;
+		aliens.addAlien(new Marshmallow(75, "Prv"), i++);
+		aliens.addAlien(new Ogre(80, "Vtor"), i++);
+		aliens.addAlien(new Marshmallow(10, "Tret"), i++);
+		aliens.addAlien(new Snake(25, "Chetvrt"), i++);
+		aliens.addAlien(new Snake(15, "Petti"), i++);
+		aliens.addAlien(new Marshmallow(60, "Shesti"), i++);
+		aliens.addAlien(new Ogre(5, "Sedmi"), i++);
+
+		System.out.println(aliens.calculateDamage());
+	}
+
+}