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libretro: add memory randomization

This commit is contained in:
Brandon Wright 2018-08-06 16:12:35 -05:00
parent cf5681ad32
commit e280153ad4
1 changed files with 30 additions and 12 deletions
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42
libretro/libretro.cpp
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@ -50,6 +50,7 @@ char g_basename[1024];
bool hires_blend = false; bool hires_blend = false;
static uint16 *gfx_blend; static uint16 *gfx_blend;
bool randomize_memory = false;
char retro_system_directory[4096]; char retro_system_directory[4096];
char retro_save_directory[4096]; char retro_save_directory[4096];
@ -170,6 +171,7 @@ void retro_set_environment(retro_environment_t cb)
{ "snes9x_overclock_superfx", "SuperFX Overclocking; 100%|150%|200%|250%|300%|350%|400%|450%|500%|50%" }, { "snes9x_overclock_superfx", "SuperFX Overclocking; 100%|150%|200%|250%|300%|350%|400%|450%|500%|50%" },
{ "snes9x_overclock_cycles", "Reduce Slowdown (Hack, Unsafe); disabled|compatible|max" }, { "snes9x_overclock_cycles", "Reduce Slowdown (Hack, Unsafe); disabled|compatible|max" },
{ "snes9x_reduce_sprite_flicker", "Reduce Flickering (Hack, Unsafe); disabled|enabled" }, { "snes9x_reduce_sprite_flicker", "Reduce Flickering (Hack, Unsafe); disabled|enabled" },
{ "snes9x_randomize_memory", "Randomize Memory (Unsafe); disabled|enabled" },
{ "snes9x_hires_blend", "Hires Blending; disabled|enabled" }, { "snes9x_hires_blend", "Hires Blending; disabled|enabled" },
{ "snes9x_audio_interpolation", "Audio Interpolation; gaussian|cubic|sinc|none|linear" }, { "snes9x_audio_interpolation", "Audio Interpolation; gaussian|cubic|sinc|none|linear" },
{ "snes9x_layer_1", "Show layer 1; enabled|disabled" }, { "snes9x_layer_1", "Show layer 1; enabled|disabled" },
@ -364,6 +366,13 @@ static void update_variables(void)
if (strcmp(var.value, "enabled") == 0) if (strcmp(var.value, "enabled") == 0)
Settings.MaxSpriteTilesPerLine = 60; Settings.MaxSpriteTilesPerLine = 60;
randomize_memory = false;
var.key = "snes9x_randomize_memory";
var.value = NULL;
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
if (strcmp(var.value, "enabled") == 0)
randomize_memory = true;
var.key = "snes9x_overscan"; var.key = "snes9x_overscan";
if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
@ -766,21 +775,30 @@ bool retro_load_game(const struct retro_game_info *game)
if(biosrom) delete[] biosrom; if(biosrom) delete[] biosrom;
} }
int pixel_format = RGB555;
if(environ_cb)
{
pixel_format = RGB565;
enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
if (!environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt))
pixel_format = RGB555;
}
S9xGraphicsDeinit();
S9xSetRenderPixelFormat(pixel_format);
S9xGraphicsInit();
if (rom_loaded) if (rom_loaded)
{
int pixel_format = RGB555;
if (environ_cb)
{
enum retro_pixel_format fmt = RETRO_PIXEL_FORMAT_RGB565;
if (environ_cb(RETRO_ENVIRONMENT_SET_PIXEL_FORMAT, &fmt))
pixel_format = RGB565;
}
S9xGraphicsDeinit();
S9xSetRenderPixelFormat(pixel_format);
S9xGraphicsInit();
update_geometry(); update_geometry();
if (randomize_memory)
{
srand(time(NULL));
for(int lcv = 0; lcv < 0x20000; lcv++)
Memory.RAM[lcv] = rand() % 256;
}
}
if (!rom_loaded && log_cb) if (!rom_loaded && log_cb)
log_cb(RETRO_LOG_ERROR, "ROM loading failed...\n"); log_cb(RETRO_LOG_ERROR, "ROM loading failed...\n");