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Add support for emulated Game Genie add-on

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This commit is contained in:
jdgleaver
2021-10-21 15:52:40 +01:00
parent 98b2ae09ab
commit 1a961ff6be
12 changed files with 240 additions and 84 deletions
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53
src/fceu.c
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@@ -56,8 +56,8 @@ void (*GameStateRestore)(int version);
readfunc ARead[0x10000];
writefunc BWrite[0x10000];
static readfunc *AReadG;
static writefunc *BWriteG;
static readfunc *AReadG = NULL;
static writefunc *BWriteG = NULL;
static int RWWrap = 0;
static DECLFW(BNull)
@@ -71,12 +71,24 @@ static DECLFR(ANull)
int AllocGenieRW(void)
{
if (!(AReadG = (readfunc*)FCEU_malloc(0x8000 * sizeof(readfunc))))
return 0;
if (!(BWriteG = (writefunc*)FCEU_malloc(0x8000 * sizeof(writefunc))))
return 0;
RWWrap = 1;
return 1;
if (!AReadG)
{
if (!(AReadG = (readfunc*)FCEU_malloc(0x8000 * sizeof(readfunc))))
return 0;
}
else
memset(AReadG, 0, 0x8000 * sizeof(readfunc));
if (!BWriteG)
{
if (!(BWriteG = (writefunc*)FCEU_malloc(0x8000 * sizeof(writefunc))))
return 0;
}
else
memset(BWriteG, 0, 0x8000 * sizeof(writefunc));
RWWrap = 1;
return 1;
}
void FlushGenieRW(void)
@@ -92,8 +104,8 @@ void FlushGenieRW(void)
}
free(AReadG);
free(BWriteG);
AReadG = 0;
BWriteG = 0;
AReadG = NULL;
BWriteG = NULL;
}
RWWrap = 0;
}
@@ -226,7 +238,8 @@ int iNESLoad(const char *name, FCEUFILE *fp);
int FDSLoad(const char *name, FCEUFILE *fp);
int NSFLoad(FCEUFILE *fp);
FCEUGI *FCEUI_LoadGame(const char *name, const uint8_t *databuf, size_t databufsize)
FCEUGI *FCEUI_LoadGame(const char *name, const uint8_t *databuf, size_t databufsize,
frontend_post_load_init_cb_t frontend_post_load_init_cb)
{
FCEUFILE *fp;
@@ -248,7 +261,11 @@ FCEUGI *FCEUI_LoadGame(const char *name, const uint8_t *databuf, size_t databufs
if (!fp) {
FCEU_PrintError("Error opening \"%s\"!", name);
return 0;
free(GameInfo);
GameInfo = NULL;
return NULL;
}
if (iNESLoad(name, fp))
@@ -262,11 +279,21 @@ FCEUGI *FCEUI_LoadGame(const char *name, const uint8_t *databuf, size_t databufs
FCEU_PrintError("An error occurred while loading the file.\n");
FCEU_fclose(fp);
return 0;
if (GameInfo->name)
free(GameInfo->name);
GameInfo->name = NULL;
free(GameInfo);
GameInfo = NULL;
return NULL;
endlseq:
FCEU_fclose(fp);
if (frontend_post_load_init_cb)
(*frontend_post_load_init_cb)();
FCEU_ResetVidSys();
if (GameInfo->type != GIT_NSF)
if (FSettings.GameGenie)