nesemu/main.c

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/*
* =====================================================================================
*
* Filename: main.c
*
* Description: Emulator main loop
*
* Version: 1.0
* Created: 2023-09-21 09:50:34 PM
* Revision: none
* Compiler: gcc
*
* Author: William Nolin,
* Organization:
*
* =====================================================================================
*/
#include <errno.h>
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#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
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#include "log.h"
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#include "include/rom.h"
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#include "include/system.h"
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#include "gui.h"
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struct log_files {
FILE *info;
FILE *debug;
};
struct log_files log_files;
FILE *add_log_file(char *name, int level) {
char *full_name = malloc((5 + strlen(name)) * sizeof(char));
strcpy(full_name, "logs/");
strcat(full_name, name);
FILE *log_file = fopen(full_name, "w");
if (!log_file) {
perror("fopen");
int fopen_err = errno;
log_error("Failed to open log file '%s': %s", full_name, strerror(fopen_err));
return NULL;
}
log_add_fp(log_file, level);
return log_file;
}
void init_logging() {
log_set_level(LOG_DEBUG);
// Print current working directory
char cwd[256];
if (getcwd(cwd, 256) == NULL) {
int getcwd_error = errno;
log_error("Failed to read current working directory: %s", strerror(getcwd_error));
return;
}
log_info("Using working directory '%s'", cwd);
// Make sure log directory exists
char *folder_name = "logs/";
struct stat sb;
if (stat(folder_name, &sb) != 0 || !S_ISDIR(sb.st_mode)) {
if (mkdir(folder_name, 0755) == 0) {
log_debug("Created logs folder");
} else {
log_error("Failed to create logs folder: %s", strerror(errno));
return;
}
}
log_files.info = add_log_file("nes.log", LOG_INFO);
#if DEBUG
log_files.debug = add_log_file("nes_debug.log", LOG_DEBUG);
#endif
}
void close_logging() {
fclose(log_files.info);
fclose(log_files.debug);
}
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int main() {
char *rom_path = "./test_roms/dk_japan.nes";
// char *rom_path = "./test_roms/smb.nes";
init_logging();
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if (!gui_init()) {
return EXIT_FAILURE;
}
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system_init();
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if (!rom_load(rom_path)) {
system_uninit();
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gui_uninit();
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return EXIT_FAILURE;
}
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gui_post_sysinit();
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system_start();
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bool stop = false;
while (!stop) {
if (gui_input() < 0) {
stop = true;
}
system_next_frame();
gui_render();
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gui_present();
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gui_delay();
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}
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system_uninit();
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rom_unload();
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gui_uninit();
close_logging();
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return EXIT_SUCCESS;
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}