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/*******************************************************************
*
* Copyright 2006-2007 Dmitry Suzdalev <dimsuz@gmail.com>
*
* This file is part of the KDE project "KLines"
*
* KLines 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, or (at your option)
* any later version.
*
* KLines 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 KLines; see the file COPYING. If not, write to
* the Free Software Foundation, 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
********************************************************************/
#ifndef ANIMATOR_H
#define ANIMATOR_H
#include <QTimeLine>
#include "commondefs.h"
class KLinesScene;
class BallItem;
/**
* Drives KLines animations
*/
class KLinesAnimator : public QObject
{
Q_OBJECT
public:
explicit KLinesAnimator( KLinesScene *scene );
/**
* Starts animation of ball movement.
* When animation finishes moveFinished() signal is emitted
* @param from starting field position
* @param to target field position
*
* @return true is there exists a path (from,to), false otherwise
*/
bool animateMove( const FieldPos& from, const FieldPos& to );
/**
* Starts animation of ball deletion from field.
* Note that it doesn't do actual deletion - it just runs
* animation of deletion.
* When animation finishes removeFinished() signal is emitted
* @param list list of balls to 'remove'
*/
void animateRemove( const QList<BallItem*>& list );
/**
* Starts animation of ball movement.
* When animation finishes bornFinished() signal is emitted
* @param list list of balls to be 'born'
*/
void animateBorn( const QList<BallItem*>& list );
/**
* @return whether some animation is in progress
*/
bool isAnimating() const;
/**
* Starts game over animation on the scene, shows game over message
* TODO: does nothing useful yet
*/
void startGameOverAnimation();
/**
* Stops game over animation
* TODO: does nothing useful yet
*/
void stopGameOverAnimation();
signals:
void moveFinished();
void removeFinished();
void bornFinished();
private slots:
void moveAnimationFrame(int);
void removeAnimationFrame(int);
void bornAnimationFrame(int);
void slotBornFinished();
private:
/**
* Implements A* pathfinding algorithm.
*/
void findPath(const FieldPos& from, const FieldPos& to);
/**
* Timeline used to control movement animation
*/
QTimeLine m_moveTimeLine;
/**
* Timeline used to control deletion animation
*/
QTimeLine m_removeTimeLine;
/**
* Timeline used to control birth animation
*/
QTimeLine m_bornTimeLine;
/**
* Scene on which animations are played
*/
KLinesScene* m_scene;
/**
* Ball object used while animating movement
*/
BallItem* m_movingBall;
/**
* findPath() algorithm stores found path in this variable
*/
QList<FieldPos> m_foundPath;
/**
* Balls for which 'remove' animation is played
*/
QList<BallItem*> m_removedBalls;
/**
* Balls for which 'born' animation is played
*/
QList<BallItem*> m_bornBalls;
};
#endif
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