added choosing spaceship in singleplay

src/MenuManager.cpp

@@ -21,6 +21,7 @@ namespace ZL {
 		
 		gameOverSavedRoot = loadUiFromFile("resources/config/game_over.json", renderer, CONST_ZIP_FILE);
 		
+		auto shipSelectionRoot = loadUiFromFile("resources/config/ship_selection_menu.json", renderer, CONST_ZIP_FILE);
 		std::function<void()> loadGameplayUI;
 		loadGameplayUI = [this]() {
 			uiManager.replaceRoot(uiSavedRoot);
@@ -114,10 +115,38 @@ namespace ZL {
 				});
 			};
 
-		uiManager.setButtonCallback("singleButton", [loadGameplayUI, this](const std::string& name) {
-			std::cerr << "Single button pressed: " << name << " -> load gameplay UI\n";
-			loadGameplayUI();
-			onSingleplayerPressed();
+		uiManager.setButtonCallback("singleButton", [this, shipSelectionRoot, loadGameplayUI](const std::string& name) {
+			std::cerr << "Single button pressed: " << name << " -> open ship selection UI\n";
+			if (!shipSelectionRoot) {
+				std::cerr << "Failed to load ship selection UI\n";
+				return;
+			}
+			if (uiManager.pushMenuFromSavedRoot(shipSelectionRoot)) {
+				uiManager.setButtonCallback("spaceshipButton", [this, loadGameplayUI](const std::string& btnName) {
+					std::string nick = uiManager.getTextFieldValue("nicknameInput");
+					if (nick.empty()) nick = "Player";
+					int shipType = 0;
+					uiManager.popMenu();
+					loadGameplayUI();
+					if (onSingleplayerPressed) onSingleplayerPressed(nick, shipType);
+					});
+
+				uiManager.setButtonCallback("cargoshipButton", [this, loadGameplayUI](const std::string& btnName) {
+					std::string nick = uiManager.getTextFieldValue("nicknameInput");
+					if (nick.empty()) nick = "Player";
+					int shipType = 1;
+					uiManager.popMenu();
+					loadGameplayUI();
+					if (onSingleplayerPressed) onSingleplayerPressed(nick, shipType);
+					});
+
+				uiManager.setButtonCallback("backButton", [this](const std::string& btnName) {
+					uiManager.popMenu();
+					});
+			}
+			else {
+				std::cerr << "Failed to push ship selection menu\n";
+			}
 			});
 		uiManager.setButtonCallback("multiplayerButton", [loadGameplayUI, this](const std::string& name) {
 			std::cerr << "Multiplayer button pressed: " << name << " -> load gameplay UI\n";