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//-------------------------------------------------------------------------
/*
Copyright (C) 2010 EDuke32 developers and contributors

This file is part of EDuke32.

EDuke32 is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License version 2
as published by the Free Software Foundation.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

//-------------------------------------------------------------------------

#ifndef savegame_h_
#define savegame_h_

#include "game.h"

#ifdef __cplusplus
extern "C" {
#endif

#ifdef LUNATIC
# define SV_MAJOR_VER 2
#else
# define SV_MAJOR_VER 1
#endif
#define SV_MINOR_VER 3

#pragma pack(push,1)
typedef struct
{
    char headerstr[11];
    uint8_t majorver, minorver, ptrsize;
    uint16_t bytever;
    // 16 bytes

    uint8_t comprthres;
    uint8_t recdiffsp, diffcompress, synccompress;
    // 4 bytes

    int32_t reccnt, snapsiz;
    // 8 bytes

    char savename[MAXSAVEGAMENAME];
    uint8_t numplayers, volnum, levnum, skill;
    char boardfn[BMAX_PATH];
    // 282 bytes
#ifdef __ANDROID__
    char skillname[32], volname[32];
#endif
} savehead_t;
#pragma pack(pop)

#ifdef __ANDROID__
#define SAVEHEAD_SIZE 374
#else
#define SAVEHEAD_SIZE 310
#endif

EDUKE32_STATIC_ASSERT(sizeof(savehead_t) == SAVEHEAD_SIZE);

int32_t sv_updatestate(int32_t frominit);
int32_t sv_readdiff(int32_t fil);
uint32_t sv_writediff(FILE *fil);
int32_t sv_loadheader(int32_t fil, int32_t spot, savehead_t *h);
int32_t sv_loadsnapshot(int32_t fil, int32_t spot, savehead_t *h);
int32_t sv_saveandmakesnapshot(FILE *fil, int8_t spot, int8_t recdiffsp, int8_t diffcompress, int8_t synccompress);
void sv_freemem();
int32_t G_SavePlayer(int32_t spot);
int32_t G_LoadPlayer(int32_t spot);
int32_t G_LoadSaveHeaderNew(int32_t spot, savehead_t *saveh);
void ReadSaveGameHeaders(void);
void G_SavePlayerMaybeMulti(int32_t slot);
void G_LoadPlayerMaybeMulti(int32_t slot);

#ifdef YAX_ENABLE
extern void sv_postyaxload(void);
#endif

// XXX: The 'bitptr' decl really belongs into gamedef.h, but we don't want to
// pull all of it in savegame.c?
extern char *bitptr;
extern uint8_t g_oldverSavegame[MAXSAVEGAMES];

enum
{
    P2I_BACK_BIT = 1,
    P2I_ONLYNON0_BIT = 2,

    P2I_FWD = 0,
    P2I_BACK = 1,

    P2I_FWD_NON0 = 0+2,
    P2I_BACK_NON0 = 1+2,
};
void G_Util_PtrToIdx(void *ptr, int32_t count, const void *base, int32_t mode);
void G_Util_PtrToIdx2(void *ptr, int32_t count, size_t stride, const void *base, int32_t mode);

#ifdef LUNATIC
extern const char *(*El_SerializeGamevars)(int32_t *slenptr, int32_t levelnum);
void El_FreeSaveCode(void);
#endif

#ifdef __ANDROID__
char const * G_GetStringFromSavegame(const char *filename, int type);
int32_t G_GetScreenshotFromSavegame(const char *filename, char *pal, char *data);
#endif

#ifdef __cplusplus
}
#endif

#endif