mirror of https://github.com/auygun/kaliber.git
56 lines
1.3 KiB
C++
56 lines
1.3 KiB
C++
#ifndef ENGINE_GAME_FACTORY_H
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#define ENGINE_GAME_FACTORY_H
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#include <memory>
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#include <string>
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#include <vector>
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#define DECLARE_GAME_BEGIN \
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std::vector<std::pair<std::string, eng::GameFactoryBase*>> \
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eng::GameFactoryBase::game_classes = {
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#define DECLARE_GAME(CLASS) {#CLASS, new eng::GameFactory<CLASS>()},
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#define DECLARE_GAME_END };
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namespace eng {
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class Game;
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class GameFactoryBase {
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public:
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virtual ~GameFactoryBase() = default;
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static std::unique_ptr<Game> CreateGame(const std::string& name) {
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if (name.empty())
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return game_classes.size() > 0
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? game_classes.begin()->second->CreateGame()
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: nullptr;
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for (auto& element : game_classes) {
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if (element.first == name)
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return element.second->CreateGame();
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}
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return nullptr;
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}
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private:
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virtual std::unique_ptr<Game> CreateGame() { return nullptr; }
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static std::vector<std::pair<std::string, GameFactoryBase*>> game_classes;
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};
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template <typename Type>
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class GameFactory final : public GameFactoryBase {
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public:
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~GameFactory() final = default;
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private:
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using GameType = Type;
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std::unique_ptr<Game> CreateGame() final {
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return std::make_unique<GameType>();
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}
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};
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} // namespace eng
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#endif // ENGINE_GAME_FACTORY_H
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