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/*
* Copyright 2007-2008 Thomas Gallinari <tg8187@yahoo.fr>
* Copyright 2007-2008 Alexandre Galinier <alex.galinier@hotmail.com>
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef GHOST_H
#define GHOST_H
#include "character.h"
#include "kapman.h"
/**
* @brief This class represents a Ghost for kapman.
*/
class Ghost : public Character {
Q_OBJECT
public:
/** The ghost possible states */
enum State {
HUNTER = 0,
PREY = 1,
EATEN = 2
};
/** The value of an Ghost */
static const int POINTS;
private:
/** Max speed ratio, compared with the initial speed */
static const qreal MAX_SPEED_RATIO;
/** The path to the Ghost image */
QString m_imageId;
/** The ghost current state */
State m_state;
/** A list of Cells to go to the camp from the current cell */
QList<QPoint> m_pathToCamp;
public:
/**
* Creates a new Ghost instance.
* @param p_x the initial x-coordinate
* @param p_y the initial y-coordinate
* @param p_imageId path to the image of the related item
* @param p_maze the Maze the Ghost is on
*/
Ghost(qreal p_x, qreal p_y, const QString & p_imageId, Maze* p_maze);
/**
* Deletes the Ghost instance.
*/
~Ghost();
/**
* Updates the Ghost move.
*/
void updateMove();
/**
* Updates the Ghost with a direction to follow.
* @param p_row x coordinate of the cell to reach
* @param p_col y coordinate of the cell to reach
*/
void updateMove(int p_row, int p_col);
/**
* Gets the path to the Ghost image.
* @return the path to the Ghost image
*/
QString getImageId() const;
/**
* Gets the current state of the Ghost.
* @return the Ghost state
*/
State getState() const;
/**
* Sets the Ghost state to the given value.
* @param p_state the new Ghost state
*/
void setState(Ghost::State p_state);
/**
* Manages the collison with the Kapman.
* @param p_kapman the instance of Kapman which collides with the Ghost
*/
void doActionOnCollision(Kapman* p_kapman);
/**
* Initializes the Ghost speed from the Character speed.
*/
void initSpeedInc();
private:
/**
* Makes the Ghost go up.
*/
void goUp();
/**
* Makes the Ghost go down.
*/
void goDown();
/**
* Makes the Ghost go to the right.
*/
void goRight();
/**
* Makes the Ghost go to the left.
*/
void goLeft();
signals:
/**
* Emitted when the Kapman has lost a life.
*/
void lifeLost();
/**
* Emitted when the Ghost has been eaten.
* @param p_ghost the eaten Ghost (this)
*/
void ghostEaten(Ghost* p_ghost);
/**
* Emitted when the Ghost has changed his state.
*/
void stateChanged();
};
#endif
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