#ifndef THA_GA_H
#define THA_GA_H

#include "ultra64.h"
#include "TwoHeadArena.h"

typedef union TwoHeadGfxArena {
    struct { // Same as TwoHeadArena, with different types and field names for the head and tail pointers
        /* 0x0 */ size_t size;
        /* 0x4 */ void* start;
        /* 0x8 */ Gfx* p;
        /* 0xC */ void* d;
    };
    /* 0x0 */ TwoHeadArena tha;
} TwoHeadGfxArena; // size = 0x10

void THA_GA_ct(TwoHeadGfxArena* thga, void* start, size_t size);
void THGA_dt(TwoHeadGfxArena* thga);
u32 THA_GA_isCrash(TwoHeadGfxArena* thga);
void THA_GA_init(TwoHeadGfxArena* thga);
s32 THA_GA_getFreeBytes(TwoHeadGfxArena* thga);
Gfx* THA_GA_getHeadPtr(TwoHeadGfxArena* thga);
void THA_GA_setHeadPtr(TwoHeadGfxArena* thga, Gfx* newHead);
void* THA_GA_getTailPtr(TwoHeadGfxArena* thga);
Gfx* THA_GA_nextPtrN(TwoHeadGfxArena* thga, size_t num);
Gfx* THA_GA_nextPtr1(TwoHeadGfxArena* thga);
Gfx* THA_GA_NEXT_DISP(TwoHeadGfxArena* thga);
void* THA_GA_alloc(TwoHeadGfxArena* thga, size_t size);
Mtx* THA_GA_allocMtxN(TwoHeadGfxArena* thga, size_t num);
Mtx* THA_GA_allocMtx1(TwoHeadGfxArena* thga);
Vtx* THA_GA_allocVtxN(TwoHeadGfxArena* thga, u32 num);
Vtx* THA_GA_allocVtx1(TwoHeadGfxArena* thga);

#endif