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#ifndef SYSTEM_MANAGER_H_544E6056
#define SYSTEM_MANAGER_H_544E6056
#include <list>
#include <memory>
#include <map>
#include <typeindex>
#include <stdexcept>
#include "system.h"
class SystemManager {
private:
std::list<std::unique_ptr<System>> loop;
std::map<std::type_index, System*> systems;
public:
template <class T, class... Args>
void emplaceSystem(Game& game, Args&&... args)
{
std::unique_ptr<T> ptr(new T(game, std::forward<Args>(args)...));
std::type_index systemType = typeid(T);
systems[systemType] = ptr.get();
loop.push_back(std::move(ptr));
}
template <class T>
T& getSystem()
{
std::type_index systemType = typeid(T);
if (!systems.count(systemType))
{
throw std::invalid_argument("Cannot get non-existent system");
}
return *dynamic_cast<T*>(systems[systemType]);
}
void tick(double dt)
{
for (std::unique_ptr<System>& sys : loop)
{
sys->tick(dt);
}
}
virtual void render(Texture& texture)
{
for (std::unique_ptr<System>& sys : loop)
{
sys->render(texture);
}
}
virtual void input(int key, int action)
{
for (std::unique_ptr<System>& sys : loop)
{
sys->input(key, action);
}
}
};
#endif /* end of include guard: SYSTEM_MANAGER_H_544E6056 */
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