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#pragma once
#include <stdint.h>
#include <stdbool.h>
#include <stddef.h>
typedef uint16_t EventID;
typedef enum {
EVENT_TYPE_PRE,
EVENT_TYPE_POST
} EventType;
typedef enum {
EVENT_PRIORITY_LOW,
EVENT_PRIORITY_NORMAL,
EVENT_PRIORITY_HIGH,
} EventPriority;
typedef struct {
bool cancelled;
} IEvent;
typedef void (*EventCallback)(IEvent*);
// ID Type
// 000000000000000 0
#define EVENT_ID(id, type) ((id << 1) | type)
#ifdef __cplusplus
#include <array>
#include <vector>
class EventSystem {
public:
static EventSystem* Instance;
size_t RegisterListener(EventID id, EventPriority priority, EventCallback callback);
void CallEvent(EventID id, IEvent* event);
private:
std::array<std::vector<EventCallback>, 0xFFFF> mEventListeners;
};
#else
extern size_t EventSystem_RegisterListener(EventID id, EventPriority priority, EventCallback callback);
extern void EventSystem_CallEvent(EventID id, void* event);
#endif
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