statestore.hpp

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#pragma once
 
#include <unordered_map>
#include <any>
#include <stdexcept>
 
namespace Engine::Utils {
    class StateStore {
        private:
            std::unordered_map<std::string, std::any> mStore;
            
        public:
            template<typename T>
            void SetState(const std::string& key, T value) {
                mStore[key] = value;
            }

            template<typename T>
            T GetState(const std::string& key) const {
                auto it = mStore.find(key);
                if(it == mStore.end()) throw std::runtime_error("store key not found: " + key);
 
                try {
                    return std::any_cast<T>(it->second);
                } catch(const std::bad_any_cast& e) {
                    throw std::runtime_error("bad type cast for store key: " + key);
                }
            }

            bool HasKey(const std::string& key) const;
    };  
}