Halo.h

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#pragma once

namespace halo
{
#define STR_CAT(a,b)            a##b
#define STR_CAT_DELAYED(a,b)   STR_CAT(a,b)
#define UNKNOWN(size) char STR_CAT_DELAYED(_unused_,__COUNTER__)[size]
#define UNKNOWN_BITFIELD(size) char STR_CAT_DELAYED(_unusedbf_, __COUNTER__) : size

#pragma pack(push, 1)

    struct ident 
    {
        unsigned short slot;
        unsigned short id;      

        explicit ident() {
            slot = 0xFFFF;
            id = 0xFFFF;
        }

        bool operator<(const ident& other)
        {
            return (unsigned long)*this < (unsigned long)other;
        }

        bool operator>(const ident& other)
        {
            return (unsigned long)*this > (unsigned long)other;
        }

        operator unsigned long() const
        {
            unsigned long result = id << 16 | (slot & 0xffff);
            return result;
        }

        bool valid() const { return id != 0xFFFF || slot != 0xFFFF; }
    };
    static_assert(sizeof(ident) == 4, "bad");

    ident make_ident(unsigned long id); 

    // Header for tables used throughout Halo (objects, players, loopobjects)
    struct s_table_header
    {
        char name[0x20];
        unsigned short max_size;
        unsigned short elem_size;
        UNKNOWN(4); // only seen as 1
        UNKNOWN(4); // d@t@
        UNKNOWN(2);
        unsigned short cur_items; // i think
        UNKNOWN(4);
        void* data;
    };
    static_assert(sizeof(s_table_header) == 0x38, "s_table_header size incorrect");

#pragma pack(pop)
}