sdl2-hello-world/src/packages/game/input/IZ_keyboard.c

#include "IZ_keyboard.h"

void IZ_HandleKeyboardEvents(SDL_Event e, IZ_KeyboardState* state, IZ_Action* action) {
	for (uint8_t i = 0; i < CONTROLS; i += 1) {
		if (e.key.keysym.sym == state->config.control_mapping[i]) {
			const uint16_t bitflag = (0x1 << i);
			if (e.type == SDL_KEYDOWN) {
				*action |= bitflag;
			} else if (e.type == SDL_KEYUP) {
				*action &= ~bitflag;
			}
		}
	}
}

void IZ_SaveKeyboardConfig(IZ_KeyboardConfig* config, uint8_t p) {
	char config_path[128];
	IZ_GetConfigPath(config_path, 128);

	char keyboard_section_name[] = "Keyboard.0.ControlMapping";
	keyboard_section_name[9] = (char) (48 + p);
	for (uint8_t i = 0; i < CONTROLS; i += 1) {
		ini_puts(keyboard_section_name, ACTION_NAMES[i], SDL_GetKeyName(config->control_mapping[i]), config_path);
	}
}

void IZ_LoadKeyboardConfig(IZ_KeyboardConfig* config, uint8_t p) {
	char config_path[128];
	IZ_GetConfigPath(config_path, 128);

	char buffer[128];
	char keyboard_section_name[] = "Keyboard.0.ControlMapping";
	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->control_mapping[i] = SDL_GetKeyFromName(buffer);
	}
}