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#ifndef ACTIVITY_H
#define ACTIVITY_H
#include <game/worldobject.h>
#include <memory>
#include <special_members.hpp>
class Vehicle;
class Activity {
public:
Activity() = default;
DEFAULT_MOVE_COPY(Activity);
virtual ~Activity() = default;
virtual void apply(Vehicle *, TickDuration) const = 0;
template<typename T> class Of;
};
using ActivityPtr = std::unique_ptr<Activity>;
template<typename T> concept ActivityConcept = std::is_base_of_v<Activity, T>;
template<ActivityConcept AC> class Can {
public:
virtual void doActivity(const AC *, TickDuration) = 0;
};
template<typename T> class Activity::Of : public Activity {
void
apply(Vehicle * v, TickDuration dur) const override
{
if (auto tv = dynamic_cast<Can<T> *>(v)) {
tv->doActivity(static_cast<const T *>(this), dur);
}
}
};
#endif
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