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#include "EventManager.h"
using namespace crepe;
EventManager & EventManager::get_instance() {
static EventManager instance;
return instance;
}
void EventManager::dispatch_events() {
for (auto event_it = this->events_queue.begin(); event_it != this->events_queue.end();) {
std::unique_ptr<Event> & event = (*event_it).event;
int channel = (*event_it).channel;
std::type_index event_type = (*event_it).type;
bool event_handled = false;
auto handlers_it = this->subscribers.find(event_type);
if (handlers_it == this->subscribers.end()) {
continue;
}
std::vector<CallbackEntry> & handlers = handlers_it->second;
for (auto handler_it = handlers.begin(); handler_it != handlers.end(); ++handler_it) {
// If callback is executed and returns true, remove the event from the queue
if ((*handler_it).callback->exec(*event)) {
event_it = this->events_queue.erase(event_it);
event_handled = true;
break;
}
}
if (!event_handled) {
++event_it;
}
}
}
void EventManager::clear() {
this->subscribers.clear();
this->events_queue.clear();
}
void EventManager::unsubscribe(subscription_t event_id) {
for (auto & [event_type, handlers] : this->subscribers) {
for (auto it = handlers.begin(); it != handlers.end();) {
if (it->id == event_id) {
it = handlers.erase(it);
return;
} else {
++it;
}
}
}
}
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