implemented command line application for launching advanced wars

CMakeLists.txt

@@ -78,6 +78,8 @@ add_executable(advanced_wars ${ADVANCED_WARS_SOURCES})
 
 set(CMAKE_MODULE_PATH ${ADVANCED_WARS_SOURCE_DIR}/cmake/ ${CMAKE_MODULE_PATH})
 
+find_package(Qt6 REQUIRED COMPONENTS Widgets)
+
 # Plattform-spezifische Konfiguration
 if(APPLE)
     # SDL2 Frameworks für macOS
@@ -96,6 +98,7 @@ if(APPLE)
             ${SDL2_PATH}/SDL2.framework/SDL2
             ${SDL2_PATH}/SDL2_image.framework/SDL2_image
             ${SDL2_PATH}/SDL2_ttf.framework/SDL2_ttf
+            Qt6::Core
             Boost::graph
             box2d
     )
@@ -127,6 +130,7 @@ else()
 
     target_link_libraries(advanced_wars
         ${HDF5_LIBRARIES}
+        Qt6::Core
         -lSDL2
         -lSDL2_image
         -lSDL2_ttf
@@ -138,7 +142,6 @@ endif()
 
 # leveleditor
 # Find Qt
-find_package(Qt6 REQUIRED COMPONENTS Widgets)
 
 file(GLOB_RECURSE LEVELEDITOR_SOURCES
         "${PROJECT_SOURCE_DIR}/src/editor/*.cpp"

src/game/main.cpp

@@ -6,20 +6,49 @@
 
 #include <SDL2/SDL.h>
 #include <SDL_image.h>
+#include <QCoreApplication>
+#include <QCommandLineParser>
 #include <iostream>
 #include <memory>
 #include <stdexcept>
 #include <vector>
+#include <string>
+#include <optional>
+#include <filesystem>
 
 using namespace advanced_wars;
 
+std::optional<std::string> get_level_filepath(int argc, char* argv[])
+{
+    QCoreApplication app(argc, argv);
+    QCoreApplication::setApplicationVersion("1.0.0");
+    QCommandLineParser parser;
+
+    parser.addVersionOption();
+    parser.addHelpOption();
+    parser.setApplicationDescription("Advanced Wars is a multi player strategy game.\nCapture citys, build units and defeat your opponents. No mercy!");
+    parser.addPositionalArgument("path", "The path to the HDF5 level file from which the level should be loaded.", "<path>");
+    parser.process(app);
+    if (parser.positionalArguments().size() != 1)
+    {
+        std::cerr << "Command not recognized." << std::endl;
+        parser.showHelp();
+        return std::nullopt;
+    }
+    std::string filepath = parser.positionalArguments()[0].toStdString();
+    if (!std::filesystem::exists(filepath))
+    {
+        std::cerr << "The hdf5 level file path: '" << filepath <<"' does not exist." << std::endl;
+        return std::nullopt;
+    }
+    return parser.positionalArguments()[0].toStdString();
+}
+
 int main(int argc, char* argv[])
 {
-    if (argc <= 1)
+    std::optional<std::string> level_filepath = get_level_filepath(argc, argv);
+    if (!level_filepath.has_value())
     {
-        std::cerr << "Please provide the path to the level that you want to play as a command line "
-                     "argument."
-                  << std::endl;
         return 1;
     }
 
@@ -43,7 +72,7 @@ int main(int argc, char* argv[])
 
     engine.setSpritesheet(spritesheet);
 
-    std::shared_ptr<Menu>        menu = std::make_shared<Menu>(0, argv[1]);
+    std::shared_ptr<Menu>        menu = std::make_shared<Menu>(0, level_filepath.value());
     std::shared_ptr<ContextMenu> context_menu = std::make_shared<ContextMenu>();
     context_menu->setOptions({"Move", "Info", "Wait"});