aion-server 4.8

package com.aionemu.gameserver.utils.stats;

import java.util.NoSuchElementException;

/**
 * @author ATracer
 */
public enum XPRewardEnum {
	MINUS_11(-11, 0),
	MINUS_10(-10, 1),
	MINUS_9(-9, 10),
	MINUS_8(-8, 20),
	MINUS_7(-7, 30),
	MINUS_6(-6, 40),
	MINUS_5(-5, 50),
	MINUS_4(-4, 60),
	MINUS_3(-3, 90),
	MINUS_2(-2, 100),
	MINUS_1(-1, 100),
	ZERO(0, 100),
	PLUS_1(1, 105),
	PLUS_2(2, 110),
	PLUS_3(3, 115),
	PLUS_4(4, 120);

	private int xpRewardPercent;

	private int levelDifference;

	private XPRewardEnum(int levelDifference, int xpRewardPercent) {
		this.levelDifference = levelDifference;
		this.xpRewardPercent = xpRewardPercent;
	}

	public int rewardPercent() {
		return xpRewardPercent;
	}

	/**
	 * @param levelDifference
	 *          between two objects
	 * @return XP reward percentage
	 */
	public static int xpRewardFrom(int levelDifference) {
		if (levelDifference < MINUS_11.levelDifference) {
			return MINUS_11.xpRewardPercent;
		}
		if (levelDifference > PLUS_4.levelDifference) {
			return PLUS_4.xpRewardPercent;
		}

		for (XPRewardEnum xpReward : values()) {
			if (xpReward.levelDifference == levelDifference) {
				return xpReward.xpRewardPercent;
			}
		}

		throw new NoSuchElementException("XP reward for such level difference was not found");
	}
}