letzplay/src/main/java/letzplay/core/LevelSystem.java

package letzplay.core;

public class LevelSystem {
    private int currentLvl;
    private float experience;

    private LevelSystem(int currentLvl, float experience) {
        this.currentLvl = currentLvl;
        this.experience = experience;
    }

    public static LevelSystem getInstance() {
        return new LevelSystem(0, 0);
    }

    private void lvlUp() {
        currentLvl++;
    }

    public void addExperience(float exp) {
        experience += exp;
        if (experience >= 100) {
            lvlUp();
            experience = experience % 100;
        }
    }

    public int currentLvl() {
        return currentLvl;
    }

    public float currentExperience() {
        return experience;
    }

    @Override
    public String toString() {
        return "Current Level: " + currentLvl + "\n" + "Experience to next " +
                "Level: " + experience + "%";
    }
}