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game-and-watch-retro-go/Core/Src/retro-go/rg_emulators.c
Konrad Beckmann 290a9402c4 Add option to disable save state support (STATE_SAVING=0)
2021-10-10 15:28:18 +02:00

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#include <odroid_system.h>
#include <string.h>
#include <assert.h>
#include <stdio.h>
#include "gw_linker.h"
#include "rg_emulators.h"
// #include "rg_favorites.h"
#include "bitmaps.h"
#include "gui.h"
#include "rom_manager.h"
#include "gw_lcd.h"
#include "main.h"
#include "main_gb.h"
#include "main_nes.h"
#include "main_smsplusgx.h"
#include "main_pce.h"
#include "main_gw.h"
// Increase when adding new emulators
#define MAX_EMULATORS 8
static retro_emulator_t emulators[MAX_EMULATORS];
static int emulators_count = 0;
retro_emulator_t *file_to_emu(retro_emulator_file_t *file) {
for (int i = 0; i < MAX_EMULATORS; i++)
if (emulators[i].system == file->system)
return &emulators[i];
return NULL;
}
static void event_handler(gui_event_t event, tab_t *tab)
{
retro_emulator_t *emu = (retro_emulator_t *)tab->arg;
listbox_item_t *item = gui_get_selected_item(tab);
retro_emulator_file_t *file = (retro_emulator_file_t *)(item ? item->arg : NULL);
if (event == TAB_INIT)
{
emulator_init(emu);
if (emu->roms.count > 0)
{
sprintf(tab->status, " Games: %d", emu->roms.count);
gui_resize_list(tab, emu->roms.count);
for (int i = 0; i < emu->roms.count; i++)
{
tab->listbox.items[i].text = emu->roms.files[i].name;
tab->listbox.items[i].arg = (void *)&emu->roms.files[i];
}
gui_sort_list(tab, 0);
tab->is_empty = false;
}
else
{
sprintf(tab->status, " No games");
gui_resize_list(tab, 8);
size_t len = 0;
tab->listbox.items[0].text = asnprintf(NULL, &len, "Place roms in folder: /roms/%s", emu->dirname);
len = 0;
tab->listbox.items[2].text = asnprintf(NULL, &len, "With file extension: .%s", emu->ext);
tab->listbox.items[4].text = "Use SELECT and START to navigate.";
tab->listbox.cursor = 3;
tab->is_empty = true;
}
}
/* The rest of the events require a file to be selected */
if (file == NULL)
return;
if (event == KEY_PRESS_A)
{
emulator_show_file_menu(file);
gui_redraw();
}
else if (event == KEY_PRESS_B)
{
emulator_show_file_info(file);
gui_redraw();
}
else if (event == TAB_IDLE)
{
if (file->checksum == 0) {
emulator_crc32_file(file);
}
// if (gui.show_cover && gui.idle_counter == (gui.show_cover == 1 ? 8 : 1)) {
// gui_draw_cover(file);
// }
}
else if (event == TAB_REDRAW)
{
if (gui.show_cover)
gui_draw_cover(file);
}
}
static void add_emulator(const char *system, const char *dirname, const char* ext, const char *part,
uint16_t crc_offset, const void *logo, const void *header)
{
assert(emulators_count <= MAX_EMULATORS);
retro_emulator_t *p = &emulators[emulators_count++];
strcpy(p->system_name, system);
strcpy(p->dirname, dirname);
strcpy(p->ext, ext);
p->partition = 0;
p->roms.count = 0;
p->roms.files = NULL;
p->initialized = false;
p->crc_offset = crc_offset;
gui_add_tab(dirname, logo, header, p, event_handler);
emulator_init(p);
}
void emulator_init(retro_emulator_t *emu)
{
if (emu->initialized)
return;
emu->initialized = true;
printf("Retro-Go: Initializing emulator '%s'\n", emu->system_name);
const rom_system_t *system = rom_manager_system(&rom_mgr, emu->system_name);
if (system) {
emu->system = system;
emu->roms.files = system->roms;
emu->roms.count = system->roms_count;
} else {
while(1) {
lcd_backlight_on();
HAL_Delay(100);
lcd_backlight_off();
HAL_Delay(100);
}
}
// retro_emulator_file_t *file = &emu->roms.files[emu->roms.count++];
// strcpy(file->folder, "/");
// strcpy(file->name, "test");
// strcpy(file->ext, "gb");
// file->emulator = (void*)emu;
// file->crc_offset = emu->crc_offset;
// file->checksum = 0;
// char path[128];
// char *files = NULL;
// size_t count = 0;
// sprintf(path, ODROID_BASE_PATH_CRC_CACHE "/%s", emu->dirname);
// odroid_sdcard_mkdir(path);
// sprintf(path, ODROID_BASE_PATH_SAVES "/%s", emu->dirname);
// odroid_sdcard_mkdir(path);
// sprintf(path, ODROID_BASE_PATH_ROMS "/%s", emu->dirname);
// odroid_sdcard_mkdir(path);
// if (odroid_sdcard_list(path, &files, &count) == 0 && count > 0)
// {
// emu->roms.files = rg_alloc(count * sizeof(retro_emulator_file_t), MEM_ANY);
// emu->roms.count = 0;
// char *ptr = files;
// for (int i = 0; i < count; ++i)
// {
// const char *name = ptr;
// const char *ext = odroid_sdcard_get_extension(ptr);
// size_t name_len = strlen(name);
// // Advance pointer to next entry
// ptr += name_len + 1;
// if (!ext || strcasecmp(emu->ext, ext) != 0) // && strcasecmp("zip", ext) != 0
// continue;
// retro_emulator_file_t *file = &emu->roms.files[emu->roms.count++];
// strcpy(file->folder, path);
// strcpy(file->name, name);
// strcpy(file->ext, ext);
// file->name[name_len-strlen(ext)-1] = 0;
// file->emulator = (void*)emu;
// file->crc_offset = emu->crc_offset;
// file->checksum = 0;
// }
// }
// free(files);
}
const uint32_t *emu_get_file_address(retro_emulator_file_t *file)
{
// static char buffer[192];
// if (file == NULL) return NULL;
// sprintf(buffer, "%s/%s.%s", file->folder, file->name, file->ext);
// return (const char*)&buffer;
return (uint32_t *) file->address;
}
/*bool emulator_build_file_object(const char *path, retro_emulator_file_t *file)
{
const char *name = odroid_sdcard_get_filename(path);
const char *ext = odroid_sdcard_get_extension(path);
if (ext == NULL || name == NULL)
return false;
memset(file, 0, sizeof(retro_emulator_file_t));
strncpy(file->folder, path, strlen(path)-strlen(name)-1);
strncpy(file->name, name, strlen(name)-strlen(ext)-1);
strcpy(file->ext, ext);
const char *dirname = odroid_sdcard_get_filename(file->folder);
for (int i = 0; i < emulators_count; ++i)
{
if (strcmp(emulators[i].dirname, dirname) == 0)
{
file->crc_offset = emulators[i].crc_offset;
file->emulator = &emulators[i];
return true;
}
}
return false;
}*/
void emulator_crc32_file(retro_emulator_file_t *file)
{
// if (file == NULL || file->checksum > 0)
// return;
// const int chunk_size = 32768;
// const char *file_path = emu_get_file_path(file);
// char *cache_path = odroid_system_get_path(ODROID_PATH_CRC_CACHE, file_path);
// FILE *fp, *fp2;
// file->missing_cover = 0;
// if ((fp = fopen(cache_path, "rb")) != NULL)
// {
// fread(&file->checksum, 4, 1, fp);
// fclose(fp);
// }
// else if ((fp = fopen(file_path, "rb")) != NULL)
// {
// void *buffer = malloc(chunk_size);
// uint32_t crc_tmp = 0;
// uint32_t count = 0;
// gui_draw_notice(" CRC32", C_GREEN);
// fseek(fp, file->crc_offset, SEEK_SET);
// while (true)
// {
// odroid_input_read_gamepad(&gui.joystick);
// if (gui.joystick.bitmask > 0) break;
// count = fread(buffer, 1, chunk_size, fp);
// if (count == 0) break;
// crc_tmp = crc32_le(crc_tmp, buffer, count);
// if (count < chunk_size) break;
// }
// free(buffer);
// if (feof(fp))
// {
// file->checksum = crc_tmp;
// if ((fp2 = fopen(cache_path, "wb")) != NULL)
// {
// fwrite(&file->checksum, 4, 1, fp2);
// fclose(fp2);
// }
// }
// fclose(fp);
// }
// else
// {
// file->checksum = 1;
// }
// free(cache_path);
// gui_draw_notice(" ", C_RED);
}
void emulator_show_file_info(retro_emulator_file_t *file)
{
char filename_value[128];
char type_value[32];
char size_value[32];
char crc_value[32];
crc_value[0] = '\x00';
odroid_dialog_choice_t choices[] = {
{0, "File", filename_value, 1, NULL},
{0, "Type", type_value, 1, NULL},
{0, "Folder", "...", 1, NULL},
{0, "Size", size_value, 1, NULL},
{0, "CRC32", crc_value, 1, NULL},
{0, "---", "", -1, NULL},
{1, "Close", "", 1, NULL},
ODROID_DIALOG_CHOICE_LAST
};
sprintf(choices[0].value, "%.127s", file->name);
sprintf(choices[1].value, "%s", file->ext);
// sprintf(choices[2].value, "%s", file->folder);
// sprintf(choices[3].value, "%d KB", odroid_sdcard_get_filesize(emu_get_file_path(file)) / 1024);
sprintf(choices[3].value, "%d KB", file->size / 1024);
if (file->checksum > 1)
{
if (file->crc_offset)
sprintf(choices[4].value, "%08lX (%d)", file->checksum, file->crc_offset);
else
sprintf(choices[4].value, "%08lX", file->checksum);
}
odroid_overlay_dialog("Properties", choices, -1);
}
void emulator_show_file_menu(retro_emulator_file_t *file)
{
// char *save_path = odroid_system_get_path(ODROID_PATH_SAVE_STATE, emu_get_file_path(file));
// char *sram_path = odroid_system_get_path(ODROID_PATH_SAVE_SRAM, emu_get_file_path(file));
// bool has_save = odroid_sdcard_get_filesize(save_path) > 0;
// bool has_sram = odroid_sdcard_get_filesize(sram_path) > 0;
// bool is_fav = favorite_find(file) != NULL;
bool has_save = 1;
bool has_sram = 0;
bool is_fav = 0;
odroid_dialog_choice_t choices[] = {
#if STATE_SAVING == 1
{0, "Resume game ", "", has_save, NULL},
#endif
{1, "New game ", "", 1, NULL},
{0, "------------", "", -1, NULL},
{3, is_fav ? "Del favorite" : "Add favorite", "", 1, NULL},
#if STATE_SAVING == 1
{2, "Delete save ", "", has_save || has_sram, NULL},
#endif
ODROID_DIALOG_CHOICE_LAST
};
int sel = odroid_overlay_dialog(NULL, choices, has_save ? 0 : 1);
if (sel == 0 || sel == 1) {
gui_save_current_tab();
emulator_start(file, sel == 0, false);
}
else if (sel == 2) {
if (odroid_overlay_confirm("Delete save file?", false) == 1) {
store_erase(file->save_address, file->save_size);
}
}
else if (sel == 3) {
// if (is_fav)
// favorite_remove(file);
// else
// favorite_add(file);
}
// free(save_path);
// free(sram_path);
}
void emulator_start(retro_emulator_file_t *file, bool load_state, bool start_paused)
{
printf("Retro-Go: Starting game: %s\n", file->name);
rom_manager_set_active_file(file);
// odroid_settings_StartAction_set(load_state ? ODROID_START_ACTION_RESUME : ODROID_START_ACTION_NEWGAME);
// odroid_settings_RomFilePath_set(path);
// odroid_settings_commit();
// odroid_system_switch_app(((retro_emulator_t *)file->emulator)->partition);
retro_emulator_t *emu = file_to_emu(file);
// TODO: Make this cleaner
if(strcmp(emu->system_name, "Nintendo Gameboy") == 0) {
#ifdef ENABLE_EMULATOR_GB
memcpy(&__RAM_EMU_START__, &_OVERLAY_GB_LOAD_START, (size_t)&_OVERLAY_GB_SIZE);
memset(&_OVERLAY_GB_BSS_START, 0x0, (size_t)&_OVERLAY_GB_BSS_SIZE);
SCB_CleanDCache_by_Addr((uint32_t *)&__RAM_EMU_START__, (size_t)&_OVERLAY_GB_SIZE);
app_main_gb(load_state, start_paused);
#endif
} else if(strcmp(emu->system_name, "Nintendo Entertainment System") == 0) {
#ifdef ENABLE_EMULATOR_NES
memcpy(&__RAM_EMU_START__, &_OVERLAY_NES_LOAD_START, (size_t)&_OVERLAY_NES_SIZE);
memset(&_OVERLAY_NES_BSS_START, 0x0, (size_t)&_OVERLAY_NES_BSS_SIZE);
SCB_CleanDCache_by_Addr((uint32_t *)&__RAM_EMU_START__, (size_t)&_OVERLAY_NES_SIZE);
app_main_nes(load_state, start_paused);
#endif
} else if(strcmp(emu->system_name, "Sega Master System") == 0 ||
strcmp(emu->system_name, "Sega Game Gear") == 0 ||
strcmp(emu->system_name, "Sega SG-1000") == 0 ||
strcmp(emu->system_name, "Colecovision") == 0 ) {
#if defined(ENABLE_EMULATOR_SMS) || defined(ENABLE_EMULATOR_GG) || defined(ENABLE_EMULATOR_COL) || defined(ENABLE_EMULATOR_SG1000)
memcpy(&__RAM_EMU_START__, &_OVERLAY_SMS_LOAD_START, (size_t)&_OVERLAY_SMS_SIZE);
memset(&_OVERLAY_SMS_BSS_START, 0x0, (size_t)&_OVERLAY_SMS_BSS_SIZE);
SCB_CleanDCache_by_Addr((uint32_t *)&__RAM_EMU_START__, (size_t)&_OVERLAY_SMS_SIZE);
if (! strcmp(emu->system_name, "Colecovision")) app_main_smsplusgx(load_state, start_paused, SMSPLUSGX_ENGINE_COLECO);
else
if (! strcmp(emu->system_name, "Sega SG-1000")) app_main_smsplusgx(load_state, start_paused, SMSPLUSGX_ENGINE_SG1000);
else app_main_smsplusgx(load_state, start_paused, SMSPLUSGX_ENGINE_OTHERS);
#endif
} else if(strcmp(emu->system_name, "Game & Watch") == 0 ) {
#ifdef ENABLE_EMULATOR_GW
memcpy(&__RAM_EMU_START__, &_OVERLAY_GW_LOAD_START, (size_t)&_OVERLAY_GW_SIZE);
memset(&_OVERLAY_GW_BSS_START, 0x0, (size_t)&_OVERLAY_GW_BSS_SIZE);
SCB_CleanDCache_by_Addr((uint32_t *)&__RAM_EMU_START__, (size_t)&_OVERLAY_GW_SIZE);
app_main_gw(load_state);
#endif
} else if(strcmp(emu->system_name, "PC Engine") == 0) {
#ifdef ENABLE_EMULATOR_PCE
memcpy(&__RAM_EMU_START__, &_OVERLAY_PCE_LOAD_START, (size_t)&_OVERLAY_PCE_SIZE);
memset(&_OVERLAY_PCE_BSS_START, 0x0, (size_t)&_OVERLAY_PCE_BSS_SIZE);
SCB_CleanDCache_by_Addr((uint32_t *)&__RAM_EMU_START__, (size_t)&_OVERLAY_PCE_SIZE);
app_main_pce(load_state, start_paused);
#endif
}
}
void emulators_init()
{
#if !( defined(ENABLE_EMULATOR_GB) || defined(ENABLE_EMULATOR_NES) || defined(ENABLE_EMULATOR_SMS) || defined(ENABLE_EMULATOR_GG) || defined(ENABLE_EMULATOR_COL) || defined(ENABLE_EMULATOR_SG1000) || defined(ENABLE_EMULATOR_PCE) || defined(ENABLE_EMULATOR_GW))
// Add gameboy as a placeholder in case no emulator is built.
add_emulator("Nintendo Gameboy", "gb", "gb", "gnuboy-go", 0, logo_gb, header_gb);
#endif
#ifdef ENABLE_EMULATOR_GB
add_emulator("Nintendo Gameboy", "gb", "gb", "gnuboy-go", 0, logo_gb, header_gb);
// add_emulator("Nintendo Gameboy Color", "gbc", "gbc", "gnuboy-go", 0, logo_gbc, header_gbc);
#endif
#ifdef ENABLE_EMULATOR_NES
add_emulator("Nintendo Entertainment System", "nes", "nes", "nofrendo-go", 16, logo_nes, header_nes);
#endif
#ifdef ENABLE_EMULATOR_SMS
add_emulator("Sega Master System", "sms", "sms", "smsplusgx-go", 0, logo_sms, header_sms);
#endif
#ifdef ENABLE_EMULATOR_GG
add_emulator("Sega Game Gear", "gg", "gg", "smsplusgx-go", 0, logo_gg, header_gg);
#endif
#ifdef ENABLE_EMULATOR_COL
add_emulator("Colecovision", "col", "col", "smsplusgx-go", 0, logo_col, header_col);
#endif
#ifdef ENABLE_EMULATOR_SG1000
add_emulator("Sega SG-1000", "sg", "sg", "smsplusgx-go", 0, logo_sg1000, header_sg1000);
#endif
#ifdef ENABLE_EMULATOR_PCE
add_emulator("PC Engine", "pce", "pce", "huexpress-go", 0, logo_nes, header_pce);
#endif
#ifdef ENABLE_EMULATOR_GW
add_emulator("Game & Watch", "gw", "gw", "LCD-Game-Emulator", 0, logo_gw, header_gw);
#endif
// add_emulator("ColecoVision", "col", "col", "smsplusgx-go", 0, logo_col, header_col);
// add_emulator("PC Engine", "pce", "pce", "huexpress-go", 0, logo_pce, header_pce);
// add_emulator("Atari Lynx", "lnx", "lnx", "handy-go", 64, logo_lnx, header_lnx);
// add_emulator("Atari 2600", "a26", "a26", "stella-go", 0, logo_a26, header_a26);
}
bool emulator_is_file_valid(retro_emulator_file_t *file)
{
for (int i = 0; i < emulators_count; i++) {
for (int j = 0; j < emulators[i].roms.count; j++) {
if (&emulators[i].roms.files[j] == file) {
return true;
}
}
}
return false;
}
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