struct PetLevel
{
    static std::map<BYTE, DWORD> levelBoundaries;
    BYTE curLevel, curSkillLevel;
    FLOAT progressPercentage;
    DWORD curExperience, expBoundaries[2];

    PetLevel(BYTE lvl, DWORD exp, bool masterSkillLvl = FALSE)
    {
        computeBoundaries(lvl);

        curLevel = lvl > PET_MAX_LEVEL ? PET_MAX_LEVEL : lvl;
        curExperience = (exp >= expBoundaries[TRUE] && curLevel < PET_MAX_LEVEL) ? LevelUp(exp) : exp;
        curSkillLevel = masterSkillLvl ? PET_MAX_SKILLVL : BYTE(curLevel / PET_FACTOR_INCREASESKILLLVL);

        computeProgress();
    }

    void Gain(DWORD exp)
    {
        exp = (exp * PET_FACTOR_EXPSHARE) / 100;

        DWORD newValue = curExperience + exp;
        curExperience = newValue;

        while (newValue >= expBoundaries[TRUE])
        {
            if (curLevel >= PET_MAX_LEVEL)
                break;

            LevelUp(newValue);

            if (newValue == expBoundaries[FALSE]) //to prevent endless loop when the curExperience == expBoundaries[FALSE]
                break;
        }

        computeProgress();
    }

    DWORD LevelUp(DWORD newValue)
    {
        if (curLevel >= PET_MAX_LEVEL)
            return expBoundaries[TRUE];

        curLevel++;

        computeBoundaries(curLevel);

        return newValue;
    }

    void computeBoundaries(BYTE lvl)
    {
        for (BYTE i = 0; i < 2; i++)
        {
            if (lvl == 1 && !i)
            {
                expBoundaries[i] = 0;
                continue;
            }

            std::map<BYTE, DWORD>::iterator iterLowerBound = levelBoundaries.find(i ? lvl : lvl -1);

            if (iterLowerBound != levelBoundaries.end())
                expBoundaries[i] = iterLowerBound->second;
            else
            {
                fprintf(stderr, "Pet Level %d does not exist in pet_levelchart", i ? lvl: lvl -1);
                exit(1);
            }
        }
    }

    void computeProgress() { progressPercentage = (((FLOAT)(curExperience - expBoundaries[FALSE]) / (expBoundaries[TRUE] - expBoundaries[FALSE])) * 100);}
};