hek/src/main/java/me/hammerle/Skill.java

package me.hammerle;

public class Skill implements Comparable<Skill> {

    private final static double[] xpForLevel = new double[]{
        0, 83, 176, 279, 392, 518, 656, 810, 979, 1166,
        1372, 1599, 1851, 2128, 2435, 2773, 3146, 3558, 4012, 4514,
        5068, 5680, 6353, 7098, 7920, 8827, 9827, 10932, 12151, 13496,
        14981, 16620, 18429, 20426, 22630, 25063, 27747, 30712, 33984, 37596,
        41582, 45984, 50842, 56205, 62127, 68662, 75878, 83844, 92638, 102346,
        113064, 124896, 137959, 152380, 168302, 185880, 205286, 226710, 250384, 276479,
        305310, 337142, 372285, 411085, 453922, 501216, 553432, 611082, 674731, 745003,
        822589, 908249, 1002824, 1107241, 1222525, 1349807, 1490337, 1645492, 1816796, 1975629,
        2214746
    };

    private final String name;
    private int level = 1;
    private double xp = 0;
    private int ticks;
    private int lastTicks = 0;
    private double last = 0.0;

    public Skill(String name) {
        this.name = name;
    }

    public void setExperience(double xp) {
        this.xp = xp;
        level = 1;
        while(level < xpForLevel.length && this.xp >= xpForLevel[level]) {
            level++;
        }
    }

    public void addExperience(double xp) {
        lastTicks = 20 * 15;
        last = xp;
        this.xp += xp;
        while(level < xpForLevel.length && this.xp >= xpForLevel[level]) {
            level++;
        }
        ticks = 20 * 60;
    }

    public String getName() {
        return name;
    }

    public double getExperience() {
        return xp;
    }

    public double getExperienceForLevel() {
        return xpForLevel[level];
    }

    public double getPercent() {
        return (100.0 * (xp - xpForLevel[level - 1])) / (xpForLevel[level] - xpForLevel[level - 1]);
    }

    public double getLastPercent() {
        return (100.0 * last) / (xpForLevel[level] - xpForLevel[level - 1]);
    }

    public void tick() {
        if(ticks > 0) {
            ticks--;
        }
        if(lastTicks > 0) {
            lastTicks--;
        } else {
            last = 0.0f;
        }
    }

    public boolean shouldRender() {
        return ticks > 0;
    }

    public boolean shouldRenderLastPercent() {
        return lastTicks > 0;
    }

    @Override
    public int compareTo(Skill other) {
        return -Integer.compare(ticks, other.ticks);
    }

    public int getLevel() {
        return level;
    }
}