1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
#include "EventSystem.h"
#include <stdexcept>
EventSystem* EventSystem::Instance = new EventSystem();
ListenerID EventSystem::RegisterListener(EventID id, EventCallback callback, EventPriority priority) {
if(std::find_if(this->mEventListeners[id].begin(), this->mEventListeners[id].end(), [callback](EventListener listener) {
return listener.function == callback;
}) != this->mEventListeners[id].end()) {
throw std::runtime_error("Listener already registered");
}
this->mEventListeners[id].push_back({ priority, callback });
// Sort by priority
std::sort(this->mEventListeners[id].begin(), this->mEventListeners[id].end(), [](EventListener a, EventListener b) {
return a.priority < b.priority;
});
return this->mEventListeners[id].size() - 1;
}
void EventSystem::UnregisterListener(EventID ev, ListenerID id) {
this->mEventListeners[ev].erase(this->mEventListeners[ev].begin() + id);
}
void EventSystem::CallEvent(EventID id, IEvent* event) {
if (this->mEventListeners[id].empty()) {
return;
}
for (auto& listener : this->mEventListeners[id]) {
listener.function(event);
}
}
extern "C" size_t EventSystem_RegisterListener(EventID id, EventCallback callback, EventPriority priority) {
return EventSystem::Instance->RegisterListener(id, callback, priority);
}
extern "C" void EventSystem_UnregisterListener(EventID ev, size_t id) {
EventSystem::Instance->UnregisterListener(ev, id);
}
extern "C" void EventSystem_CallEvent(EventID id, void* event) {
EventSystem::Instance->CallEvent(id, static_cast<IEvent*>(event));
}
|
