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#pragma once
#include "EventManager.h"
namespace crepe {
template <typename EventType>
subscription_t
EventManager::subscribe(const EventHandler<EventType> & callback, event_channel_t channel) {
subscription_counter++;
std::type_index event_type = typeid(EventType);
std::unique_ptr<EventHandlerWrapper<EventType>> handler
= std::make_unique<EventHandlerWrapper<EventType>>(callback);
std::vector<CallbackEntry> & handlers = this->subscribers[event_type];
handlers.emplace_back(CallbackEntry {
.callback = std::move(handler), .channel = channel, .id = subscription_counter
});
return subscription_counter;
}
template <typename EventType>
void EventManager::queue_event(const EventType & event, event_channel_t channel) {
static_assert(
std::is_base_of<Event, EventType>::value, "EventType must derive from Event"
);
this->events_queue.push_back(QueueEntry{
// unique_ptr w/ custom destructor implementation is used because the base Event interface
// can't be polymorphic (= have default virtual destructor)
.event = {
new EventType(event),
[](Event * ev) { delete static_cast<EventType *>(ev); },
},
.channel = channel,
.type = typeid(EventType),
});
}
template <typename EventType>
void EventManager::trigger_event(const EventType & event, event_channel_t channel) {
this->handle_event(typeid(EventType), channel, event);
}
} // namespace crepe
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