// Ball.h -- written 16 Mar 1996 by Max Hailperin <max@gac.edu>
//
// The Ball class is for the moving ball in the Photon game.
// It has an (x,y) position measured in units of the playing fields "cells",
// i.e., the basic grid, and it has a direction of motion specified through
// two separate settings -- vertical and direction.  If vertical is 1, then
// the ball is moving up or down, while if it is 0, then the ball is moving
// left or right.  If direction is 1, then the ball is moving up or right,
// while if direction is -1, then the ball is moving down or left.

#ifndef BALL_H
#define BALL_H

class Photon;

class Ball{
public:
  Ball(Photon *, int x, int y, int direction, int vertical); // draws ball too
  void move(); // moves the ball one cell in the appropriate direction
  int x() {return xpos;}
  int y() {return ypos;}
  int direction() {return dir;}
  void direction(int newDir) {dir = newDir;}
  int vertical() {return vert;}
  void vertical(int newVert) {vert = newVert;}
  ~Ball(); // also erases the ball
protected:
  Photon *game;
  int xpos, ypos, dir, vert, id;
};
#endif