sdl2-hello-world/src/packages/game/config/IZ_config.c

#include <stdio.h>
#include <string.h>
#include <minIni.h>
#include <SDL_filesystem.h>
#include <SDL_keyboard.h>

#include "../IZ_action.h"
#include "IZ_config.h"

void IZ_GetConfigPath(char* config_path) {
	//const char* config_path_dir = SDL_GetPrefPath("Modal Studios", APP_NAME);
	const char* config_path_dir = SDL_GetBasePath();
	memcpy_s(config_path, 128, config_path_dir, 128);
	strcat_s(config_path, 128, "config.ini");
}

void IZ_SaveConfig(IZ_Config* config) {
	char config_path[128];
	IZ_GetConfigPath(config_path);
	FILE* fp;
	fopen_s(&fp, config_path, "w");
	fprintf_s(fp, "[Video]\n");
	fprintf_s(fp, "Width=%u\n", config->video.width);
	fprintf_s(fp, "Height=%u\n", config->video.height);
	fprintf_s(fp, "MaxFps=%u\n", config->video.max_fps);
	fprintf_s(fp, "\n");

	fprintf_s(fp, "[Input]\n");
	fprintf_s(fp, "GamepadAxisThreshold=%u\n", config->input.gamepad_axis_threshold);
	fprintf_s(fp, "\n");

	for (uint8_t p = 0; p < PLAYERS; p += 1) {
		fprintf_s(fp, "[Controls.%u.Keyboard]\n", p);
		for (uint8_t i = 0; i < CONTROLS; i += 1) {
			fprintf_s(fp, "%s=%s\n", ACTION_NAMES[i], SDL_GetKeyName(config->controls[p].keyboard[i]));
		}

		fprintf_s(fp, "\n");
		fprintf_s(fp, "[Controls.%u.Joystick]\n", p);
		for (uint8_t i = 4; i < CONTROLS; i += 1) {
			fprintf_s(fp, "%s=%d\n", ACTION_NAMES[i], config->controls[p].gamepad[i]);
		}
	}
}

void IZ_LoadConfig(IZ_Config* config) {
	char config_path[128];
	IZ_GetConfigPath(config_path);
	config->video.width = ini_getl("Video", "Width", 640l, config_path);
	config->video.height = ini_getl("Video", "Height", 480l, config_path);
	config->video.max_fps = ini_getl("Video", "MaxFps", 30, config_path);
	config->input.gamepad_axis_threshold = ini_getl("Input", "GamepadAxisThreshold", 8000, config_path);
	char buffer[128];
	char keyboard_section_name[20] = "Controls.0.Keyboard";
	for (uint8_t p = 0; p < PLAYERS; p += 1) {
		keyboard_section_name[9] = (char) (48 + p);
		for (uint8_t i = 0; i < CONTROLS; i += 1) {
			ini_gets(keyboard_section_name, ACTION_NAMES[i], SDL_GetKeyName(IZ_DEFAULT_KEYBOARD_CONTROLS[p][i]), buffer, 128,
							 config_path);
			config->controls[p].keyboard[i] = SDL_GetKeyFromName(buffer);
		}
	}

	char joystick_section_name[20] = "Controls.0.Joystick";
	for (uint8_t p = 0; p < PLAYERS; p += 1) {
		joystick_section_name[9] = (char) (48 + p);

		for (uint8_t i = 4; i < CONTROLS; i += 1) {
			config->controls[p].gamepad[i] = ini_getl(joystick_section_name, ACTION_NAMES[i], IZ_DEFAULT_JOYSTICK_CONTROLS[p][i], config_path);
		}
	}
}