damagecalculator.h

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#pragma once
 
#include <zenkit/addon/daedalus.hh>
 
#include "game/constants.h"
 
class Npc;
class Bullet;
 
class DamageCalculator {
  public:
    enum {
      MinDamage = 5,
      };
 
    struct Val final {
      Val()=default;
      Val(int32_t v,bool b):value(v),hasHit(b){}
      Val(int32_t v,bool b,bool i):value(v),hasHit(b),invincible(i){}
 
      int32_t value      = 0;
      bool    hasHit     = false;
      bool    invincible = false;
      };
 
    struct Damage final {
      int32_t  val[zenkit::DamageType::NUM] = {};
      int32_t& operator[](size_t i) { return val[i]; }
      void     operator *= (int32_t v) { for(auto& i:val) i*=v; }
      void     operator /= (int32_t v) { for(auto& i:val) i/=v; }
      };
 
    static Val     damageValue(Npc& src, Npc& other, const Bullet* b, bool isSpell, const DamageCalculator::Damage& splDmg, const CollideMask bMsk);
    static Val     damageFall(Npc& src, float speed);
    static auto    rangeDamageValue(Npc& src) -> Damage;
    static int32_t damageTypeMask(Npc& npc);
 
  private:
    static bool    checkDamageMask(Npc& src, Npc& other, const Bullet* b);
 
    static Val     rangeDamage(Npc& src, Npc& other, const Bullet& b, const CollideMask bMsk);
    static Val     rangeDamage(Npc& src, Npc& other, Damage dmg, const CollideMask bMsk);
    static Val     swordDamage(Npc& src, Npc& other);
  };