entry.h

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#pragma once
 
#include "application/application_config.h"
#include "application/application_types.h"
#include "core/engine.h"
#include "logger.h"
#include "platform/filesystem.h"
 
extern b8 create_application(application* out_app);
 
extern b8 initialize_application(application* app);
 
extern const char* application_config_path_get(void);
 
int main(void) {
 
    // TODO: load up application config file, get it parsed and ready to hand off.
    // Request the application instance from the application.
    application app_inst = {0};
 
    const char* app_file_content = filesystem_read_entire_text_file(application_config_path_get());
    if (!app_file_content) {
        KFATAL("Failed to read app_config.kson file text. Application cannot start.");
        return -68;
    }
 
    if (!application_config_parse_file_content(app_file_content, &app_inst.app_config)) {
        KFATAL("Failed to parse application config. Cannot start.");
        return -69;
    }
 
    if (!create_application(&app_inst)) {
        KFATAL("Could not create application!");
        return -1;
    }
 
    // Ensure the function pointers exist.
    if (!app_inst.render_frame || !app_inst.prepare_frame || !app_inst.update || !app_inst.initialize) {
        KFATAL("The application's function pointers must be assigned!");
        return -2;
    }
 
    // Initialization.
    if (!engine_create(&app_inst)) {
        KFATAL("Engine failed to create!.");
        return 1;
    }
 
    if (!initialize_application(&app_inst)) {
        KFATAL("Could not initialize application!");
        return -1;
    }
 
    // Begin the engine loop.
    if (!engine_run(&app_inst)) {
        KINFO("Application did not shutdown gracefully.");
        return 2;
    }
 
    return 0;
}