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game data packing representation of the headers

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This commit is contained in:
David Carlier 2021-04-07 18:09:58 +01:00
parent f3912680ac
commit 4e97fe4c74
1 changed files with 28 additions and 33 deletions
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61
src/savegame/savegame.c
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@ -121,6 +121,15 @@ typedef struct
mmove_t *mmovePtr; mmove_t *mmovePtr;
} mmoveList_t; } mmoveList_t;
typedef struct
{
char ver[32];
char game[32];
char os[32];
char arch[32];
} savegameHeader_t;
/* ========================================================= */ /* ========================================================= */
/* /*
@ -739,12 +748,9 @@ ReadClient(FILE *f, gclient_t *client, short save_ver)
void void
WriteGame(const char *filename, qboolean autosave) WriteGame(const char *filename, qboolean autosave)
{ {
savegameHeader_t sv;
FILE *f; FILE *f;
int i; int i;
char str_ver[32];
char str_game[32];
char str_os[32];
char str_arch[32];
if (!autosave) if (!autosave)
{ {
@ -759,20 +765,14 @@ WriteGame(const char *filename, qboolean autosave)
} }
/* Savegame identification */ /* Savegame identification */
memset(str_ver, 0, sizeof(str_ver)); memset(&sv, 0, sizeof(sv));
memset(str_game, 0, sizeof(str_game));
memset(str_os, 0, sizeof(str_os));
memset(str_arch, 0, sizeof(str_arch));
strncpy(str_ver, SAVEGAMEVER, sizeof(str_ver)); strncpy(sv.ver, SAVEGAMEVER, sizeof(sv.ver));
strncpy(str_game, GAMEVERSION, sizeof(str_game)); strncpy(sv.game, GAMEVERSION, sizeof(sv.game));
strncpy(str_os, YQ2OSTYPE, sizeof(str_os) - 1); strncpy(sv.os, YQ2OSTYPE, sizeof(sv.os) - 1);
strncpy(str_arch, YQ2ARCH, sizeof(str_arch)); strncpy(sv.arch, YQ2ARCH, sizeof(sv.arch));
fwrite(str_ver, sizeof(str_ver), 1, f); fwrite(&sv, sizeof(sv), 1, f);
fwrite(str_game, sizeof(str_game), 1, f);
fwrite(str_os, sizeof(str_os), 1, f);
fwrite(str_arch, sizeof(str_arch), 1, f);
game.autosaved = autosave; game.autosaved = autosave;
fwrite(&game, sizeof(game), 1, f); fwrite(&game, sizeof(game), 1, f);
@ -794,12 +794,10 @@ WriteGame(const char *filename, qboolean autosave)
void void
ReadGame(const char *filename) ReadGame(const char *filename)
{ {
savegameHeader_t sv;
FILE *f; FILE *f;
int i; int i;
char str_ver[32];
char str_game[32];
char str_os[32];
char str_arch[32];
short save_ver = 0; short save_ver = 0;
gi.FreeTags(TAG_GAME); gi.FreeTags(TAG_GAME);
@ -812,10 +810,7 @@ ReadGame(const char *filename)
} }
/* Sanity checks */ /* Sanity checks */
fread(str_ver, sizeof(str_ver), 1, f); fread(&sv, sizeof(sv), 1, f);
fread(str_game, sizeof(str_game), 1, f);
fread(str_os, sizeof(str_os), 1, f);
fread(str_arch, sizeof(str_arch), 1, f);
static const struct { static const struct {
const char* verstr; const char* verstr;
@ -829,7 +824,7 @@ ReadGame(const char *filename)
for (i=0; i < sizeof(version_mappings)/sizeof(version_mappings[0]); ++i) for (i=0; i < sizeof(version_mappings)/sizeof(version_mappings[0]); ++i)
{ {
if (strcmp(version_mappings[i].verstr, str_ver) == 0) if (strcmp(version_mappings[i].verstr, sv.ver) == 0)
{ {
save_ver = version_mappings[i].vernum; save_ver = version_mappings[i].vernum;
break; break;
@ -844,12 +839,12 @@ ReadGame(const char *filename)
if (save_ver == 1) if (save_ver == 1)
{ {
if (strcmp(str_game, GAMEVERSION) != 0) if (strcmp(sv.game, GAMEVERSION) != 0)
{ {
fclose(f); fclose(f);
gi.error("Savegame from another game.so.\n"); gi.error("Savegame from another game.so.\n");
} }
else if (strcmp(str_os, OSTYPE_1) != 0) else if (strcmp(sv.os, OSTYPE_1) != 0)
{ {
fclose(f); fclose(f);
gi.error("Savegame from another os.\n"); gi.error("Savegame from another os.\n");
@ -857,13 +852,13 @@ ReadGame(const char *filename)
#ifdef _WIN32 #ifdef _WIN32
/* Windows was forced to i386 */ /* Windows was forced to i386 */
if (strcmp(str_arch, "i386") != 0) if (strcmp(sv.arch, "i386") != 0)
{ {
fclose(f); fclose(f);
gi.error("Savegame from another architecture.\n"); gi.error("Savegame from another architecture.\n");
} }
#else #else
if (strcmp(str_arch, ARCH_1) != 0) if (strcmp(sv.arch, ARCH_1) != 0)
{ {
fclose(f); fclose(f);
gi.error("Savegame from another architecture.\n"); gi.error("Savegame from another architecture.\n");
@ -872,24 +867,24 @@ ReadGame(const char *filename)
} }
else // all newer savegame versions else // all newer savegame versions
{ {
if (strcmp(str_game, GAMEVERSION) != 0) if (strcmp(sv.game, GAMEVERSION) != 0)
{ {
fclose(f); fclose(f);
gi.error("Savegame from another game.so.\n"); gi.error("Savegame from another game.so.\n");
} }
else if (strcmp(str_os, YQ2OSTYPE) != 0) else if (strcmp(sv.os, YQ2OSTYPE) != 0)
{ {
fclose(f); fclose(f);
gi.error("Savegame from another os.\n"); gi.error("Savegame from another os.\n");
} }
else if (strcmp(str_arch, YQ2ARCH) != 0) else if (strcmp(sv.arch, YQ2ARCH) != 0)
{ {
#if defined(_WIN32) && (defined(__i386__) || defined(_M_IX86)) #if defined(_WIN32) && (defined(__i386__) || defined(_M_IX86))
// before savegame version "YQ2-4" (and after version 1), // before savegame version "YQ2-4" (and after version 1),
// the official Win32 binaries accidentally had the YQ2ARCH "AMD64" // the official Win32 binaries accidentally had the YQ2ARCH "AMD64"
// instead of "i386" set due to a bug in the Makefile. // instead of "i386" set due to a bug in the Makefile.
// This quirk allows loading those savegames anyway // This quirk allows loading those savegames anyway
if (save_ver >= 4 || strcmp(str_arch, "AMD64") != 0) if (save_ver >= 4 || strcmp(sv.arch, "AMD64") != 0)
#endif #endif
{ {
fclose(f); fclose(f);