how to calculate shoutPower for my libGdx game?

Question

this.maxHp = 100;

this.hp = this.maxHp;

it's mean objeact got 100hp and if we hit object, it's subtracted 5 hp from object.

here is method th check if object take damage:

 public boolean takeDamage(int dmg) {

    hp -= dmg;

    reddish += 1.0f;

    if (hp <= 0) {

        return true;
  }
    return false;
}

here is method to check if bullet hit object:

public void checkCollisions() {
    List<Bullet> b = bulletEmitter.getActiveList();
    for (int i = 0; i < b.size(); i++) {
        for (int j = 0; j < players.size(); j++) {
            if (b.get(i).isArmed() && players.get(j).getHitArea().contains(b.get(i).getPosition())) {
                b.get(i).deactivate();
                 players.get(j).takeDamage(5);
                map.clearGround(b.get(i).getPosition().x, b.get(i).getPosition().y, 8);
                continue;
            }
        }

I need to show taking damage (int dmg), damage might be any variable which we put in method takeDamage(int dmg). int this case int dmg = 5;

I can't calculate it this:

result = maxHp - hp

increase result on 5hp with evry hit

5.. 10.. 15.. 20..

here is method, which i put font in:

        damageFont.draw(batch, "" + (maxHp - hp), position.x, position.y + 130, 85, 1, false);

    }
}

(maxHp - hp) - increase result on 5hp with evry hit 5.. 10.. 15.. 20..

instead this, i need to calculate ammount of deal damage, but not with constant values.

(maxHp - hp) something instead this just should return 5, if we put 5 in takeDamage(int dmg) or 10, if we put 10.

it's amount of damage take with evry hit:

should be 5, 5, 5, 5

not: 5... 10... 15... 20

Answer 1

Just like MarsAtomic mentioned you allready have your damage per hit, just save it as a new instance variable and display it instead of (maxHp - hp):

private int damageTaken;

public boolean takeDamage(int dmg) {
   damageTaken = dmg;
   hp -= dmg;

   reddish += 1.0f;

   if (hp <= 0) {

       return true;
   }
   return false;
}

and when you draw your font:

damageFont.draw(batch, "" + damageTaken, position.x, position.y + 130, 85, 1, false);