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103 lines
4.3 KiB
C++
103 lines
4.3 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* Additional copyright for this file:
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* Copyright (C) 1999-2000 Revolution Software Ltd.
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* This code is based on source code created by Revolution Software,
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* used with permission.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef ICB_EVENTMANAGER_H_INCLUDED
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#define ICB_EVENTMANAGER_H_INCLUDED
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// Include files with relative paths
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#include "engines/icb/common/px_string.h"
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#include "engines/icb/p4.h"
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#include "engines/icb/event_timer.h"
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#include "engines/icb/event_list.h"
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#include "engines/icb/session.h"
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namespace ICB {
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#define EVENT_MANAGER_LOG "event_manager_log.txt"
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// Maximum number of event timers active at one time.
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#define EVENT_MANAGER_MAX_TIMERS 4
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// Keeps track of which object is interested in hearing about events from which other objects and stores
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// events which have occurred until they can be handled.
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class _event_manager {
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public:
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// Default constructor and destructor.
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_event_manager() {}
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~_event_manager() {}
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// This initializes the whole object and must be called at the start of each session.
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void Initialise();
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// This says whether a particular object has events pending.
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bool8 HasEventPending(int32 nObjectID);
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// This checks if an object has the named event waiting for it.
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bool8 CheckEventWaitingForObject(int32 nObjectID, const char *pcEventName);
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// This shuts down an object in the event manager.
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void ShutDownEventProcessingForObject(int32 nObjectID);
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// This processes the event timers if there are any, posting events as required.
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void CycleEventManager();
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// Determines whether or not the named object is registered for the named event.
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bool8 IsObjectRegisteredForEvent(int32 nCallerID, const char *pcEventName);
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// These functions save and restore necessary parts of the event manager.
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void Save(Common::WriteStream *stream) const;
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void Restore(Common::SeekableReadStream *stream);
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// These functions will probably have direct script counterparts.
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void RegisterForEvent(int32 nObjectID, const char *pcEventName);
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void UnregisterForEvent(int32 nObjectID, const char *pcEventName);
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void PostNamedEvent(const char *pcEventName, int32 nSenderID);
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void PostNamedEventToObject(const char *pcEventName, int32 nTargetID, int32 nSenderID);
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void PostRepeatingEvent(const char *pcEventName, uint32 nStart, uint32 nInterval, uint32 nEnd);
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void ClearAllEventsForObject(int32 nObjectID);
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bool8 DidObjectSendLastNamedEvent(int32 nCallerID, int32 nObjectID, const char *pcEventName) const;
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int32 GetIDOfLastObjectToPostEvent(int32 nCallerID, const char *pcEventName) const;
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void SetSuspendFlagForObject(int32 nObjectID, bool8 bState);
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private:
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_event_list m_pEventLists[MAX_session_objects]; // List of objects and the events they are currently interested in.
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_event_timer m_pEventTimers[EVENT_MANAGER_MAX_TIMERS]; // Housekeeping for future and repeating events.
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uint8 m_nNumObjects; // Number of objects in the event manager.
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bool8 m_pbActiveTimers[EVENT_MANAGER_MAX_TIMERS]; // Housekeeping for future and repeating events.
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bool8 m_pbRunning[MAX_session_objects]; // Set true for currently-running objects, false if they have been shut down.
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bool8 m_pbSuspended[MAX_session_objects]; // Allows objects to be suspended then reinstated.
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// Here I block the use of the default '='.
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_event_manager(const _event_manager &) {}
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void operator=(const _event_manager &) {}
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};
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extern _event_manager *g_oEventManager; // Instantiated in global_objects.cpp.
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} // End of namespace ICB
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#endif // #if !defined( EVENTMANAGER_H_INCLUDED )
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