Implement main menu with (not validated) user selection.

Author: hentai-chan

src/anim.cpp

@@ -53,6 +53,34 @@ void print_splash_screen(const std::filesystem::path& assets_dir)
 	}
 }
 
+std::vector<models::Pokemon> load_main_menu(utils::Manifest manifest)
+{
+	// 1. set difficulty
+	int selection{};
+	utils::print_enum_table({"easy", "moderate", "hard"}, "difficulty");
+	selection = utils::get_user_input<int>(">>> ");
+	auto difficulty = (selection == 1) ? models::Difficulty::EASY : (selection == 2) ? models::Difficulty::MODERATE : models::Difficulty::HARD;
+
+	// 2. instantiate all available pokemons
+	std::vector<models::Pokemon> pkmns{};
+	pkmns.reserve(manifest.duplicates.size());
+	std::for_each(manifest.duplicates.begin(), manifest.duplicates.end(),
+				  [&manifest, &pkmns, &difficulty](int id) { pkmns.push_back(models::Pokemon(id, manifest.asset_dir, difficulty)); });
+
+	// 3. select pokemon
+	std::vector<std::string> names{};
+	names.reserve(pkmns.size());
+	std::for_each(pkmns.begin(), pkmns.end(), [&names](models::Pokemon& pkmn) { names.push_back(pkmn.name); });
+	utils::print_enum_table(names, "pokemons");
+	selection = utils::get_user_input<int>(">>> ");
+	models::Pokemon player = pkmns[selection - 1];
+
+	// 4. remove selection from pkmns, so that player won't fight against his doppelganger
+	pkmns.erase(std::remove_if(pkmns.begin(), pkmns.end(), [player](models::Pokemon pkmn) { return player.id == pkmn.id; }), pkmns.end());
+
+	return {player, pkmns.size() > 1 ? utils::random_choice(pkmns) : pkmns[0]};
+}
+
 void print_frame(models::Pokemon& pkmn1, models::Pokemon& pkmn2)
 {
 	std::string healthbars{};

src/anim.hpp

@@ -11,5 +11,7 @@ std::vector<std::string> gen_healthbar(models::Pokemon& pkmn);
 
 void print_splash_screen(const std::filesystem::path& assets_dir);
 
+std::vector<models::Pokemon> load_main_menu(utils::Manifest manifest);
+
 void print_frame(models::Pokemon& pkmn1, models::Pokemon& pkmn2);
 } // namespace anim