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save ram handling for dual mode

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radius 2018-02-03 16:48:40 -05:00
parent 792087276e
commit 8dd94505a8
1 changed files with 115 additions and 44 deletions
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91
libretro/libretro.c
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@ -33,9 +33,9 @@ static const char slash = '/';
#define VIDEO_HEIGHT 144
#define VIDEO_PIXELS (VIDEO_WIDTH * VIDEO_HEIGHT)
#define RETRO_MEMORY_GAMEBOY_1_RAM ((1 << 8) | RETRO_MEMORY_SAVE_RAM)
#define RETRO_MEMORY_GAMEBOY_1_SRAM ((1 << 8) | RETRO_MEMORY_SAVE_RAM)
#define RETRO_MEMORY_GAMEBOY_1_RTC ((2 << 8) | RETRO_MEMORY_RTC)
#define RETRO_MEMORY_GAMEBOY_2_RAM ((3 << 8) | RETRO_MEMORY_SAVE_RAM)
#define RETRO_MEMORY_GAMEBOY_2_SRAM ((3 << 8) | RETRO_MEMORY_SAVE_RAM)
#define RETRO_MEMORY_GAMEBOY_2_RTC ((3 << 8) | RETRO_MEMORY_RTC)
#define RETRO_GAME_TYPE_GAMEBOY_LINK_2P 0x101
@ -60,6 +60,12 @@ enum audio_out {
GB_2
};
enum mode{
MODE_SINGLE_GAME,
MODE_SINGLE_GAME_DUAL,
MODE_DUAL_GAME
};
static enum model model[2];
static enum model auto_model = MODEL_CGB;
@ -78,6 +84,8 @@ static unsigned pre_init = 1;
static unsigned screen_layout = 0;
static unsigned audio_out = 0;
static enum mode mode = MODE_SINGLE_GAME;
static bool geometry_updated = false;
static bool sameboy_dual = false;
@ -230,12 +238,12 @@ static const struct retro_variable vars_link_dual[] = {
};
static const struct retro_subsystem_memory_info gb1_memory[] = {
{ "srm", RETRO_MEMORY_GAMEBOY_1_RAM },
{ "srm.slot1", RETRO_MEMORY_GAMEBOY_1_SRAM },
{ "rtc", RETRO_MEMORY_GAMEBOY_1_RTC },
};
static const struct retro_subsystem_memory_info gb2_memory[] = {
{ "srm", RETRO_MEMORY_GAMEBOY_2_RAM },
{ "srm.slot2", RETRO_MEMORY_GAMEBOY_2_SRAM },
{ "rtc", RETRO_MEMORY_GAMEBOY_2_RTC },
};
@ -767,9 +775,12 @@ bool retro_load_game(const struct retro_game_info *info)
if (sameboy_dual)
{
emulated_devices = 2;
mode = MODE_SINGLE_GAME_DUAL;
environ_cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars_sameboy_dual);
check_variables(true);
}
else
mode = MODE_SINGLE_GAME;
frame_buf = (uint32_t*)malloc(emulated_devices * VIDEO_PIXELS * sizeof(uint32_t));
frame_buf_copy = (uint32_t*)malloc(emulated_devices * VIDEO_PIXELS * sizeof(uint32_t));
@ -825,7 +836,10 @@ bool retro_load_game_special(unsigned type, const struct retro_game_info *info,
{
if (type == RETRO_GAME_TYPE_GAMEBOY_LINK_2P)
{
emulated_devices = 2;
mode = MODE_DUAL_GAME;
}
else
return false; /* all other types are unhandled for now */
@ -925,7 +939,12 @@ bool retro_unserialize(const void *data, size_t size)
void *retro_get_memory_data(unsigned type)
{
void* data;
void* data = NULL;
switch(mode)
{
case MODE_SINGLE_GAME:
case MODE_SINGLE_GAME_DUAL: /* todo: hook this properly */
{
switch(type)
{
case RETRO_MEMORY_SYSTEM_RAM:
@ -933,11 +952,7 @@ void *retro_get_memory_data(unsigned type)
break;
case RETRO_MEMORY_SAVE_RAM:
if (gameboy[0].cartridge_type->has_battery && gameboy[0].mbc_ram_size != 0)
{
data = gameboy[0].mbc_ram;
/* let's copy the save to gameboy[1] so it can save independently */
//memcpy(gameboy[1].mbc_ram, gameboy[0].mbc_ram, gameboy[0].mbc_ram_size);
}
else
data = NULL;
break;
@ -951,14 +966,45 @@ void *retro_get_memory_data(unsigned type)
data = NULL;
break;
default:
break;
}
}
break;
case MODE_DUAL_GAME: /* todo: hook up other memory types */
{
switch (type)
{
case RETRO_MEMORY_GAMEBOY_1_SRAM:
if (gameboy[0].cartridge_type->has_battery && gameboy[0].mbc_ram_size != 0)
data = gameboy[0].mbc_ram;
else
data = NULL;
break;
case RETRO_MEMORY_GAMEBOY_2_SRAM:
if (gameboy[1].cartridge_type->has_battery && gameboy[1].mbc_ram_size != 0)
data = gameboy[1].mbc_ram;
else
data = NULL;
break;
default:
break;
}
}
break;
default:
break;
}
return data;
}
size_t retro_get_memory_size(unsigned type)
{
size_t size;
size_t size = 0;
switch(mode)
{
case MODE_SINGLE_GAME:
case MODE_SINGLE_GAME_DUAL: /* todo: hook this properly */
{
switch(type)
{
case RETRO_MEMORY_SYSTEM_RAM:
@ -980,8 +1026,33 @@ size_t retro_get_memory_size(unsigned type)
size = 0;
break;
default:
break;
}
}
break;
case MODE_DUAL_GAME: /* todo: hook up other memory types */
{
switch (type)
{
case RETRO_MEMORY_GAMEBOY_1_SRAM:
if (gameboy[0].cartridge_type->has_battery && gameboy[0].mbc_ram_size != 0)
size = gameboy[0].mbc_ram_size;
else
size = 0;
break;
case RETRO_MEMORY_GAMEBOY_2_SRAM:
if (gameboy[1].cartridge_type->has_battery && gameboy[1].mbc_ram_size != 0)
size = gameboy[1].mbc_ram_size;
else
size = 0;
break;
default:
break;;
}
}
break;
default:
break;
}
return size;