Episode 7: Status Effects – Stun, Burn, Heal

1. Project Structure

src/
└── effect/
    ├── StatusEffect.java          // Abstract base class
    ├── BurnEffect.java            // Deals damage over time
    ├── StunEffect.java            // Prevents acting
    └── HealEffect.java            // Restores HP

2. StatusEffect.java – Abstract Base Class

package effect;

import model.Hero;

public abstract class StatusEffect {
    protected int duration;

    public StatusEffect(int duration) {
        this.duration = duration;
    }

    public boolean isExpired() {
        return duration <= 0;
    }

    public void tick(Hero target) {
        if (!isExpired()) {
            apply(target);
            duration--;
        }
    }

    public abstract void apply(Hero target);
    public abstract String getName();
}

3. BurnEffect.java – Damage over Time

package effect;

import model.Hero;

public class BurnEffect extends StatusEffect {
    private int burnDamage;

    public BurnEffect(int duration, int burnDamage) {
        super(duration);
        this.burnDamage = burnDamage;
    }

    @Override
    public void apply(Hero target) {
        System.out.println(target.getName() + " is burning! Takes " + burnDamage + " damage.");
        target.takeDamage(burnDamage);
    }

    @Override
    public String getName() {
        return "Burn";
    }
}

4. StunEffect.java – Skips Turn

package effect;

import model.Hero;

public class StunEffect extends StatusEffect {

    public StunEffect(int duration) {
        super(duration);
    }

    @Override
    public void apply(Hero target) {
        System.out.println(target.getName() + " is stunned and cannot act!");
        // We'll check this flag in Main or Hero logic later
    }

    @Override
    public String getName() {
        return "Stun";
    }
}

5. HealEffect.java – Heals HP

package effect;

import model.Hero;

public class HealEffect extends StatusEffect {
    private int healAmount;

    public HealEffect(int duration, int healAmount) {
        super(duration);
        this.healAmount = healAmount;
    }

    @Override
    public void apply(Hero target) {
        System.out.println(target.getName() + " is healed for " + healAmount + " HP.");
        target.heal(healAmount);
    }

    @Override
    public String getName() {
        return "Heal";
    }
}

6. Update Hero.java to Support Effects

Update your Hero class to store and process status effects:

import effect.StatusEffect;
import java.util.*;

public abstract class Hero {
    // ... existing fields
    protected List<StatusEffect> effects = new ArrayList<>();

    public void addEffect(StatusEffect effect) {
        effects.add(effect);
        System.out.println(name + " is affected by " + effect.getName());
    }

    public void processEffects() {
        Iterator<StatusEffect> it = effects.iterator();
        while (it.hasNext()) {
            StatusEffect effect = it.next();
            effect.tick(this);
            if (effect.isExpired()) {
                System.out.println(effect.getName() + " has worn off.");
                it.remove();
            }
        }
    }

    public void heal(int amount) {
        this.hp += amount;
        System.out.println(name + " now has " + hp + " HP.");
    }

    // existing attack/takeDamage/etc...
}

7. Example Test in Main.java

import effect.*;
import model.*;

public class Main {
    public static void main(String[] args) {
        Hero garen = new Warrior("Garen");
        Hero ahri = new Mage("Ahri");

        ahri.addEffect(new BurnEffect(3, 5));
        garen.addEffect(new HealEffect(2, 10));

        for (int i = 1; i <= 3; i++) {
            System.out.println("=== Turn " + i + " ===");
            garen.processEffects();
            ahri.processEffects();
            garen.attack(ahri);
            ahri.attack(garen);
        }
    }
}