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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#ifndef ILLUSIONS_UPDATEFUNCTIONS_H
#define ILLUSIONS_UPDATEFUNCTIONS_H
#include "common/func.h"
#include "common/list.h"
namespace Illusions {
enum {
kUFNext = 1, // Run next update funtion
kUFTerminate = 2 // Terminate update function
};
typedef Common::Functor1<uint, int> UpdateFunctionCallback;
class UpdateFunction {
public:
int _priority;
uint32 _tag;
uint _flags;
UpdateFunctionCallback *_callback;
UpdateFunction() : _priority(0), _tag(0), _flags(0), _callback(0) {}
~UpdateFunction() { delete _callback; }
void terminate() { _flags |= 1; }
int run() { return (*_callback)(_flags); }
};
class UpdateFunctions {
public:
UpdateFunctions();
~UpdateFunctions();
void add(int priority, uint32 tag, UpdateFunctionCallback *callback);
void update();
void terminateByScene(uint32 sceneId);
protected:
typedef Common::List<UpdateFunction*> UpdateFunctionList;
typedef UpdateFunctionList::iterator UpdateFunctionListIterator;
struct FindInsertionPosition : public Common::UnaryFunction<const UpdateFunction*, bool> {
int _priority;
FindInsertionPosition(int priority) : _priority(priority) {}
bool operator()(const UpdateFunction *updateFunction) const {
return updateFunction->_priority > _priority;
}
};
Common::List<UpdateFunction*> _updateFunctions;
uint32 _lastTimerUpdateTime;
};
} // End of namespace Illusions
#endif // ILLUSIONS_UPDATEFUNCTIONS_H
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