public void changeXp(float xp) {
		this.xp += xp;
		if (this.xp > maxXP){
			this.xp = 0;
			if (type == CType.KNIGHT){
				maxHP = maxHP * Balance.HP_RATIO_K;
				maxMP = maxMP * Balance.MP_RATIO_K;
				//TODO level up for knight
			}
			else if (type == CType.MAGE){
				//TODO level up for mage
			}
			else{
				//TODO level up for thief
			}
			level += 1;
			log.writeToLog("You are now level " + level + "!", Color.magenta);
			maxXP = maxXP * Balance.XP_RATIO;
			hp = maxHP;
			mp = maxMP;
		}
	}