Damage.h

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#include "../Halo.h"
#include "../../../Common/Streams.h"

namespace halo {

    struct s_object_info;
    struct s_tag_entry;

    #pragma pack(push, 1)
    
    struct s_damage_info {
        ident tag_id;
        unsigned long flags;
        ident player_causer;
        ident causer; // obj of causer
        UNKNOWN(0x30);
        float modifier; // 1.0 = max dmg, < 0 decreases dmg.
        float modifier1; // 1.0 default > 1.0 increases dmg.
        UNKNOWN(8);
    };
    static_assert(sizeof(s_damage_info) == 0x50, "bad");

    struct s_hit_info {
        char desc[0x20];
        UNKNOWN(0x28);  // doesn't seem to be that useful, mostly 0s with a few 1.0 floats. 
    };
    static_assert(sizeof(s_hit_info) == 0x48, "bad");

    struct s_damage_amount
    {
        float min_damage;
        float max_damage_min;
        float max_damage_max;

        s_damage_amount()
            : min_damage(0), max_damage_max(0), max_damage_min(0)
        {
        }

        s_damage_amount(float min_damage, float max_damage_min, float max_damage_max)
            : min_damage(min_damage), max_damage_min(max_damage_min), 
              max_damage_max(max_damage_max)
        {
        }
    };
    static_assert(sizeof(s_damage_amount) == 0x0c, "bad");

    struct s_damage_tag
    {
        float min_range;
        float max_range;
        UNKNOWN(0x1BE);
        short damage_id;
        UNKNOWN(0x08);
        s_damage_amount amount;
        UNKNOWN(0xC4);
    };
    static_assert(sizeof(s_damage_tag) == 0x2A0, "bad");
    
    #pragma pack(pop)
    namespace damage_flags {
        static const int kNone =        0x00;
        static const int kRespawn =     0x02;
        static const int kInstantKill = 0x04;
    }

    struct damage_script_options
    {
        halo::ident receiver;
        halo::ident causer; // obj id
        halo::ident causer_player; // player id
        halo::ident tag;
        int flags;
        float modifier;
    };

    // Called when an object's damage is being looked up
    bool __stdcall OnDamageLookup(s_damage_info* dmg, ident* receiver);

    // Called when damage is being applied to an object
    bool __stdcall OnDamageApplication(const s_damage_info* dmg, ident receiver,
        s_hit_info* hit, bool backtap);

    // Temporarily modifies globals\vehicle_hit_environment and uses it to apply damage.
    bool ApplyDamage(halo::ident receiver, halo::ident causer, 
        float dmg, int flags);

    // Apply the specified damage tag to the receiver
    void ApplyDamage(halo::ident receiver, halo::ident causer, 
        const halo::s_tag_entry& dmg_tag, float multiplier, int flags);
}