#include <ultra64.h>
#include <global.h>
#include <vt.h>

void Overlay_LoadGameState(GameStateOverlay* overlayEntry)
{
    if (overlayEntry->loadedRamAddr != NULL)
    {
        // Translates to: "ALREADY LINKED"
        osSyncPrintf("既にリンクされています\n");
        return;
    }

    if (overlayEntry->vramStart == 0)
        overlayEntry->unk_28 = 0;
    else
    {
        overlayEntry->loadedRamAddr = Overlay_AllocateAndLoad(overlayEntry->vromStart, overlayEntry->vromEnd,
                                                              overlayEntry->vramStart, overlayEntry->vramEnd);

        if (overlayEntry->loadedRamAddr == NULL)
        {
            // Translates to: "LOADING FAILED"
            osSyncPrintf("ロードに失敗しました\n");
            return;
        }

        osSyncPrintf(VT_FGCOL(GREEN));
        osSyncPrintf("OVL(d):Seg:%08x-%08x Ram:%08x-%08x Off:%08x %s\n",
                     overlayEntry->vramStart, overlayEntry->vramEnd,
                     overlayEntry->loadedRamAddr,
                     (u32)overlayEntry->loadedRamAddr + (u32)overlayEntry->vramEnd - (u32)overlayEntry->vramStart,
                     (u32)overlayEntry->vramStart - (u32)overlayEntry->loadedRamAddr,
                      "");
        osSyncPrintf(VT_RST);

        if (overlayEntry->unk_14 != NULL)
            overlayEntry->unk_14 = (void*)((u32)overlayEntry->unk_14 -
                                           (s32)((u32)overlayEntry->vramStart - (u32)overlayEntry->loadedRamAddr));
        else
            overlayEntry->unk_14 = NULL;

        if (overlayEntry->init != NULL)
            overlayEntry->init = (void*)((u32)overlayEntry->init -
                                         (s32)((u32)overlayEntry->vramStart - (u32)overlayEntry->loadedRamAddr));
        else
            overlayEntry->init = NULL;

        if (overlayEntry->destroy != NULL)
            overlayEntry->destroy = (void*)((u32)overlayEntry->destroy -
                                            (s32)((u32)overlayEntry->vramStart - (u32)overlayEntry->loadedRamAddr));
        else
            overlayEntry->destroy = NULL;

        if (overlayEntry->unk_20 != NULL)
            overlayEntry->unk_20 = (void*)((u32)overlayEntry->unk_20 -
                                           (s32)((u32)overlayEntry->vramStart - (u32)overlayEntry->loadedRamAddr));
        else
            overlayEntry->unk_20 = NULL;

        if (overlayEntry->unk_24 != NULL)
            overlayEntry->unk_24 = (void*)((u32)overlayEntry->unk_24 -
                                           (s32)((u32)overlayEntry->vramStart - (u32)overlayEntry->loadedRamAddr));
        else
            overlayEntry->unk_24 = NULL;

        overlayEntry->unk_28 = 0;
    }
}

void Overlay_FreeGameState(GameStateOverlay* overlayEntry)
{
    if (overlayEntry->loadedRamAddr != NULL)
    {
        s32 temp = overlayEntry->unk_28 != 0 ? -1 : 0;

        if (temp == 0)
        {
            if (overlayEntry->unk_14 != NULL)
                overlayEntry->unk_14 = (void*)((u32)overlayEntry->unk_14 +
                                               (s32)((u32)overlayEntry->vramStart - (u32)overlayEntry->loadedRamAddr));
            else
                overlayEntry->unk_14 = NULL;

            if (overlayEntry->init != NULL)
                overlayEntry->init = (void*)((u32)overlayEntry->init +
                                             (s32)((u32)overlayEntry->vramStart - (u32)overlayEntry->loadedRamAddr));
            else
                overlayEntry->init = NULL;

            if (overlayEntry->destroy != NULL)
                overlayEntry->destroy = (void*)((u32)overlayEntry->destroy +
                                                (s32)((u32)overlayEntry->vramStart - (u32)overlayEntry->loadedRamAddr));
            else
                overlayEntry->destroy = NULL;

            if (overlayEntry->unk_20 != NULL)
                overlayEntry->unk_20 = (void*)((u32)overlayEntry->unk_20 +
                                               (s32)((u32)overlayEntry->vramStart - (u32)overlayEntry->loadedRamAddr));
            else
                overlayEntry->unk_20 = NULL;

            if (overlayEntry->unk_24 != NULL)
                overlayEntry->unk_24 = (void*)((u32)overlayEntry->unk_24 +
                                               (s32)((u32)overlayEntry->vramStart - (u32)overlayEntry->loadedRamAddr));
            else
                overlayEntry->unk_24 = NULL;

            SystemArena_FreeDebug(overlayEntry->loadedRamAddr, "../z_DLF.c", 149);
            overlayEntry->loadedRamAddr = NULL;
        }
    }
}