fighterPowerIntervals = (basicPower = false) => {
        return [basicPower,
            Math.floor(basicPower / 3),
            Math.floor(basicPower / 1.5),
            Math.ceil(basicPower * 1.5),
            Math.ceil(basicPower * 3)
        ];
    }
@param {number} basicPower - basic fighter power calculated by #enemyFighterPower
@return {Array} fighter power intervals array including [basic power, AD power, AP power, AS power, AS+ power].