Basic config system from a json file but it's got serious issues. Can't copy construct it because of the variable blocking copying, and it can't even be put into the dinkyecs in any way.

config.cpp

@@ -0,0 +1,15 @@
+#include "config.hpp"
+
+Config::Config(const std::string src_path) : $src_path(src_path) {
+  std::ifstream infile($src_path);
+  $config = json::parse(infile);
+}
+
+json &Config::operator[](const std::string &key) {
+  return $config[key];
+}
+
+std::wstring Config::wstring(const std::string main_key, const std::string sub_key) {
+  const std::string& str_val = $config[main_key][sub_key];
+  return $converter.from_bytes(str_val);
+}

config.hpp

@@ -0,0 +1,19 @@
+#pragma once
+#include <nlohmann/json.hpp>
+#include <fstream>
+#include <codecvt>
+
+using namespace nlohmann;
+
+struct Config {
+  std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> $converter;
+  json $config;
+  std::string $src_path = "./config.json";
+
+  Config(const std::string src_path);
+  Config(Config &other) = delete;
+
+  json &operator[](const std::string &key);
+
+  std::wstring wstring(const std::string main_key, const std::string sub_key);
+};

main.cpp

@@ -6,6 +6,7 @@
 #include "dbc.hpp"
 #include "collider.hpp"
 #include "render.hpp"
+#include "config.hpp"
 
 #include "ftxui/screen/terminal.hpp"  // for SetColorSupport, Color, TrueColor
 
@@ -53,11 +54,14 @@ void configure_world(DinkyECS::World &world, Map &game_map) {
 int main() {
   Terminal::SetColorSupport(Terminal::Color::TrueColor);
   DinkyECS::World world;
+
   Map game_map(GAME_MAP_X, GAME_MAP_Y);
   game_map.generate();
 
   configure_world(world, game_map);
   System::init_positions(world);
+
   GUI gui(world, game_map);
+
   return gui.main();
 }

meson.build

@@ -20,7 +20,7 @@ runtests = executable('runtests', [
   'sound.cpp',
   'collider.cpp',
   'ansi_parser.cpp',
-  #'render.cpp',
+  'config.cpp',
   'tests/fsm.cpp',
   'tests/dbc.cpp',
   'tests/map.cpp',
@@ -28,6 +28,7 @@ runtests = executable('runtests', [
   'tests/sound.cpp',
   'tests/dinkyecs.cpp',
   'tests/ansi_parser.cpp',
+  'tests/config.cpp',
   ],
   dependencies: dependencies)
 

tests/ansi_parser.cpp

@@ -59,10 +59,6 @@ TEST_CASE("test out ragel parser", "[gui]") {
 
   bool good = parser.parse(colors, [&](sf::Color bgcolor, sf::Color color, wchar_t ch) {
       bool correct_char = ch == '#' || ch == ' ' || ch == '\n' || ch == '\r';
-      // println("FG: {},{},{},{}; BG: {},{},{},{}; ch: {}",
-      //     color.r, color.g, color.b, color.a,
-      //     bgcolor.r, bgcolor.g, bgcolor.b, bgcolor.a,
-      //     int(ch));
       REQUIRE(correct_char);
   });
 

tests/config.cpp

@@ -0,0 +1,43 @@
+#include <catch2/catch_test_macros.hpp>
+#include <fmt/core.h>
+#include <string>
+#include "config.hpp"
+#include <any>
+#include "dinkyecs.hpp"
+
+using namespace fmt;
+using std::string;
+
+TEST_CASE("basic configuration system", "[config]") {
+  Config config("./tests/config.json");
+
+  auto not_found = config["types"]["NOTFOUND"];
+  REQUIRE(not_found == nullptr);
+
+  auto test_string = config["types"]["STRING"];
+  REQUIRE(test_string ==  L"\u2849█Ω♣");
+
+  std::wstring test_wstring = config.wstring("types", "STRING");
+  REQUIRE(test_wstring ==  L"\u2849█Ω♣");
+
+  wchar_t chr0 = test_wstring[0];
+  REQUIRE(chr0 == L'\u2849');
+
+  auto test_num = config["types"]["NUMBER"];
+  REQUIRE(test_num == 1234);
+
+  auto test_float = config["types"]["FLOAT"];
+  REQUIRE(test_num >= 0.1233f);
+
+  auto test_obj = config["types"]["OBJECT"];
+  REQUIRE(test_obj["name"] == "Zed");
+}
+
+void test_func(Config &ref) {
+  REQUIRE(ref["types"]["OBJECT"]["name"] == "Zed");
+}
+
+TEST_CASE("store config in any", "[config]") {
+  Config config("./tests/config.json");
+  test_func(config);
+}

tests/config.json

@@ -0,0 +1,10 @@
+{
+  "types": {
+    "NUMBER": 1234,
+    "STRING": "\u2849█Ω♣",
+    "FLOAT": 0.1234,
+    "OBJECT": {
+      "name": "Zed"
+    }
+  }
+}