bindings, controls.json file

src/voxel_engine.cpp

@@ -1,9 +1,9 @@
 #include <iostream>
 #include <cmath>
 #include <stdint.h>
-
 #include <memory>
 #include <filesystem>
+#include <stdexcept>
 
 #include "definitions.h"
 
@@ -11,8 +11,11 @@
 #include "engine.h"
 
 #include "coders/toml.h"
+#include "coders/json.h"
 #include "files/files.h"
 
+#include "window/Events.h"
+
 toml::Wrapper create_wrapper(EngineSettings& settings) {
 	toml::Wrapper wrapper;
 	toml::Section& display = wrapper.add("display");
@@ -38,6 +41,48 @@ toml::Wrapper create_wrapper(EngineSettings& settings) {
 	return wrapper;
 }
 
+std::string write_controls() {
+	json::JObject* obj = new json::JObject();
+	for (auto& entry : Events::bindings) {
+		const auto& binding = entry.second;
+
+		json::JObject* jentry = new json::JObject();
+		switch (binding.type) {
+			case inputtype::keyboard: jentry->put("type", "keyboard"); break;
+			case inputtype::button: jentry->put("type", "button"); break;
+			default: throw std::runtime_error("unsupported control type");
+		}
+		jentry->put("code", binding.code);
+		obj->put(entry.first, jentry);
+	}
+	return json::stringify(obj, true, "  ");
+}
+
+void load_controls(std::string filename, std::string source) {
+	json::JObject* obj = json::parse(filename, source);
+	for (auto& entry : Events::bindings) {
+		auto& binding = entry.second;
+
+		json::JObject* jentry = obj->obj(entry.first);
+		if (jentry == nullptr)
+			continue;
+		inputtype type;
+		std::string typestr;
+		jentry->str("type", typestr);
+
+		if (typestr == "keyboard") {
+			type = inputtype::keyboard;
+		} else if (typestr == "button") {
+			type = inputtype::button;
+		} else {
+			std::cerr << "unknown input type '" << typestr << "'" << std::endl;
+			continue;
+		}
+		binding.type = type;
+		jentry->num("code", binding.code);
+	}
+}
+
 int main() {
 	platform::configure_encoding();
 	setup_definitions();
@@ -45,21 +90,26 @@ int main() {
 	    EngineSettings settings;
 		toml::Wrapper wrapper = create_wrapper(settings);
 
-		std::string settings_file = platform::get_settings_file();
+		std::filesystem::path settings_file = platform::get_settings_file();
+		std::filesystem::path controls_file = platform::get_controls_file();
 		if (std::filesystem::is_regular_file(settings_file)) {
 			std::cout << "-- loading settings" << std::endl;
 			std::string content = files::read_string(settings_file);
 			toml::Reader reader(&wrapper, settings_file, content);
 			reader.read();
-		} else {
-			std::cout << "-- creating settings file " << settings_file << std::endl;
-			files::write_string(settings_file, wrapper.write());
 		}
 		Engine engine(settings);
+		setup_bindings();
+		if (std::filesystem::is_regular_file(controls_file)) {
+			std::cout << "-- loading controls" << std::endl;
+			std::string content = files::read_string(controls_file);
+			load_controls(controls_file.string(), content);
+		}
 		engine.mainloop();
 		
 		std::cout << "-- saving settings" << std::endl;
 		files::write_string(settings_file, wrapper.write());
+		files::write_string(controls_file, write_controls());
 	}
 	catch (const initialize_error& err) {
 		std::cerr << "could not to initialize engine" << std::endl;