dfhack/library/include/modules/EventManager.h

#pragma once
#ifndef EVENT_MANAGER_H_INCLUDED
#define EVENT_MANAGER_H_INCLUDED

#include "Core.h"
#include "Export.h"
#include "ColorText.h"
#include "PluginManager.h"
#include "Console.h"

namespace DFHack {
    namespace EventManager {
        namespace EventType {
            enum EventType {
                TICK,
                JOB_INITIATED,
                JOB_COMPLETED,
                UNIT_DEATH,
                ITEM_CREATED,
                EVENT_MAX
            };
        }

        struct EventHandler {
            void (*eventHandler)(color_ostream&, void*); //called when the event happens

            EventHandler(void (*eventHandlerIn)(color_ostream&, void*)): eventHandler(eventHandlerIn) {
            }

            bool operator==(EventHandler& handle) const {
                return eventHandler == handle.eventHandler;
            }
            bool operator!=(EventHandler& handle) const {
                return !( *this == handle);
            }
        };
        
        DFHACK_EXPORT void registerListener(EventType::EventType e, EventHandler handler, Plugin* plugin);
        DFHACK_EXPORT void registerTick(EventHandler handler, int32_t when, Plugin* plugin, bool absolute=false);
        DFHACK_EXPORT void unregister(EventType::EventType e, EventHandler handler, Plugin* plugin);
        DFHACK_EXPORT void unregisterAll(Plugin* plugin);
        void manageEvents(color_ostream& out);
        void onStateChange(color_ostream& out, state_change_event event);
    }
}

#endif