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/* ********************************************************************************
This file is part of the game 'KTron'
Copyright (C) 1998-2000 by Matthias Kiefer <matthias.kiefer@gmx.de>
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 TRON_H
#define TRON_H
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <qwidget.h>
#include <qpainter.h>
#include <qpixmap.h>
#include <math.h>
#include <krandomsequence.h>
class KActionCollection;
#include "player.h"
enum Player{One,Two,Both,Nobody};
// Bits that defines the rect and which sides to draw
enum {BACKGROUND=0, PLAYER1=1,PLAYER2=2,TOP=4,BOTTOM=8,LEFT=16,RIGHT=32};
/**
* @short The playingfield
*/
class Tron : public QWidget
{
Q_OBJECT
public:
Tron(QWidget *parent=0, const char *name=0);
~Tron();
void setActionCollection(KActionCollection*);
void updatePixmap();
void setBackgroundPix(QPixmap);
void setComputerplayer(Player player, bool);
bool isComputer(Player player);
void setVelocity(int);
void setRectSize(int newSize);
public slots:
/** Starts a new game. The difference to reset is, that the players
* points are set to zero. Emits gameEnds(Nobody).
*/
void newGame();
void togglePause();
/**
* checks if both players are computer and starts the game
*/
void computerStart();
void loadSettings();
signals:
void gameEnds(Player loser);
void gameReset();
protected:
/** bitBltīs the rect that has to be updated from the
* bufferpixmap on the screen and writes eventually text
*/
void paintEvent(QPaintEvent *);
/** resets game and creates a new playingfield */
void resizeEvent(QResizeEvent *);
void keyPressEvent(QKeyEvent *);
void keyReleaseEvent(QKeyEvent *);
/** pauses game */
void focusOutEvent(QFocusEvent *);
private:
/** Stores key shortcuts */
KActionCollection* actionCollection;
/** Drawing buffer */
QPixmap *pixmap;
/** The playingfield */
QMemArray<int> *playfield;
/** game status flag */
bool gamePaused;
/** game status flag */
bool gameEnded;
/** used for waiting after game ended */
bool gameBlocked;
/** flag, if a string should be drawn, how to start the game */
bool beginHint;
/** Height of the playingfield in number of rects*/
int fieldHeight;
/** Width of the playingfield in number of rects*/
int fieldWidth;
QTimer *timer;
player players[2];
/** Backgroundpixmap **/
QPixmap bgPix;
/** time in ms between two moves */
int velocity;
/** size of the rects */
int rectSize;
/** The random sequence generator **/
KRandomSequence random;
// Options
/** determines level of computerplayer */
int lookForward;
// Funktionen
/** resets the game */
void reset();
/** starts the game timer */
void startGame();
/** stops the game timer */
void stopGame();
/** creates a new playfield and a bufferpixmap */
void createNewPlayfield();
/** paints players at current player coordinates */
void paintPlayers();
/** draws a rect in current TronStyle at position x,y of the playingfield */
void drawRect(QPainter & p, int x, int y);
/** emits gameEnds(Player) and displays the winner by changing color*/
void showWinner(Player winner);
/** calculates if player playerNr would crash
* if he moves xInc in x-direction and yInc in y-direction
*/
bool crashed(int playerNr,int xInc, int yInc) const;
/** calculates if player playerNr should change direction */
void think(int playerNr);
void changeDirection(int playerNr,int dis_right,int dis_left);
/** sets the direction of player playerNr to newDirection */
void switchDir(int playerNr,Directions::Direction newDirection);
/**
* updates the the rect at current position to not draw a
* border in the direction of the next step.
* (only used in mode OLine)
*
* -1 means update both players
*/
void updateDirections(int playerNr=-1);
private slots:
/**
* This is the main function of KTron.
* It checkes if an accelerator is pressed and than moves this player
* forward. Then it checkes if a crash occurred.
* If no crash happen it moves both players forward and checks again
* if someone crashed.
*/
void doMove();
void unblockGame();
void showBeginHint();
};
#endif // TRON_H
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