sapphire/src/world/Math/CalcStats.h

#pragma once

#include <random>
#include <Common.h>
#include "Forwards.h"

namespace Sapphire::Math
{

  class CalcStats
  {
  public:
    static const uint32_t AUTO_ATTACK_POTENCY = 110;
    static const uint32_t RANGED_AUTO_ATTACK_POTENCY = 100;

    static float calculateBaseStat( const Entity::Chara& chara );

    static uint32_t calculateMaxHp( Sapphire::Entity::Player& player );
    static uint32_t calculateMaxHp( Sapphire::Entity::Chara& chara );

    static uint32_t calculateMaxMp( Sapphire::Entity::Player& player );

    /*!
     * @brief Calculates the MP cost of a spell given its base cost
     *
     * @param chara The Chara that is casting the action
     * @param baseCost The action cost
     * @return The total MP to be consumed by a successful cast
     */
    static uint16_t calculateMpCost( const Sapphire::Entity::Chara& chara, uint16_t baseCost );

    /*!
     * @brief Calculates the probability of a block happening
     */
    static float blockProbability( const Sapphire::Entity::Chara& chara );

    /*!
     * @brief Calculates the probability of a critical hit happening
     */
    static float criticalHitProbability( const Sapphire::Entity::Chara& chara );

    /*!
     * @brief Calculates the contribution of potency to damage output.
     *
     * @param potency The action potency
     */
    static float potency( uint16_t potency );

    static float autoAttackPotency( const Sapphire::Entity::Chara& chara );

    /*!
     * @brief Weapon damage is the contribution the weapon's damage rating
     *
     * @param chara The source/casting character.
     * @param weaponDamage the weapons physical or magic damage
     */
    static float weaponDamage( const Sapphire::Entity::Chara& chara, float weaponDamage );

    /*!
     * @brief Calculates the contribution of attack power to damage dealt with consideration for the primary stat
     * @todo Only works at level 70
     *
     * @param chara The source/casting character.
     */
    static float getPrimaryAttackPower( const Sapphire::Entity::Chara& chara );

    static float attackPower( const Sapphire::Entity::Chara& chara );

    static float magicAttackPower( const Sapphire::Entity::Chara& chara );

    static float healingMagicPower( const Sapphire::Entity::Chara& chara );

    /*!
     * @brief Calculates determinations contribution to damage and healing output.
     *
     * @param chara The source/casting character.
     * @return Returns a rational number rounded to 3 decimal places.
     */
    static float determination( const Sapphire::Entity::Chara& chara );

    /*!
     * @brief Calculates the tenacity contribution to damage, mitigation and healing.
     *
     * @param chara The source/casting character.
     * @return Returns a rational number rounded to 3 decimal places.
     */
    static float tenacity( const Sapphire::Entity::Chara& chara );

    /*!
     * @brief Calculates the bonus granted by either spell speed or skill speed depending on the casters classjob.
     *
     * @param chara The source/casting character.
     */
    static float speed( const Sapphire::Entity::Chara& chara );

    /*!
     * @brief Calculates the amount of bonus damaged applied on a critical hit
     * @note Called Critical Hit Rate in the TJ document but I think that name is a bit too ambiguous - f(CHR)
     *
     * @param chara The source/casting character.
     */
    static float criticalHitBonus( const Sapphire::Entity::Chara& chara );

    /*!
     * @brief Calculates how much damage you mitigate via physical defence
     *
     * @param chara The source/casting character.
     */
    static float physicalDefence( const Sapphire::Entity::Chara& chara );

    /*!
     * @brief Calculates how much damage you mitigate via magical defence
     *
     * @param chara The source/casting character.
     */
    static float magicDefence( const Sapphire::Entity::Chara& chara );

    /*!
     * @brief Calculates the percentage of damage that is mitigated on a successful block
     *
     * @param chara The source/casting character.
     */
    static float blockStrength( const Sapphire::Entity::Chara& chara );

    static float autoAttack( const Sapphire::Entity::Chara& chara );

    /*!
     * @brief Calculates the multiplier that healing magic potency affects healing output
     *
     * @todo Only works for level 70
     *
     * @param chara The source/casting character.
     */
    static float healingMagicPotency( const Sapphire::Entity::Chara& chara );

    ////////////////////////////////////////////

    static std::pair< float, Common::ActionHitSeverityType > calcAutoAttackDamage( const Sapphire::Entity::Chara& chara );

    static std::pair< float, Common::ActionHitSeverityType > calcActionDamage( const Sapphire::Entity::Chara& chara, uint32_t ptc, float wepDmg );

    static std::pair< float, Common::ActionHitSeverityType > calcActionHealing( const Sapphire::Entity::Chara& chara, uint32_t ptc, float wepDmg );

    static uint32_t primaryStatValue( const Sapphire::Entity::Chara& chara );
  private:

    /*!
     * @brief Has the main attack power calculation allowing for de-duplication of functions.
     *
     * @param attackPower The magic/physical attack power value.
     */
    static float calcAttackPower( const Sapphire::Entity::Chara& chara, uint32_t attackPower );

    static std::random_device dev;
    static std::mt19937 rng;
    static std::uniform_int_distribution< std::mt19937::result_type > range100;
  };

}