// CSE 143 
// Homework 5 
// http://www.cs.washington.edu/education/courses/143/00su/homework/ 
// 31 Jul 2000, Ken Yasuhara

// class FireworksScript
//
// encapsulates reading entries from fireworks script file

// fireworks script file, format of each entry:
//   {launch time} {type} {x} {y} {vx} {vy} {color} 
//   [additional parameters]
// where type is a char, all other fields are ints
//
// (x, y) is starting coordinates
// (vx, vy) are x and y components of initial velocity
// colors are enumed in gp142display.h, starting at 0 with Black:
//   Black, White, Red, Green, Blue, Yellow, Magenta, Cyan,
//   Purple, NavyBlue, DustyPlum, IceBlue, Turquoise, Orange,
//   Brown, Pink, Chalk, Gold, Peach, ForestGreen, SeaGreen,
//   Olive, MedGray, LightGray

// currently supported types and additional parameters:
// 
// 'r'  BasicRayFirework
//      {radius} {mass} {duration}
//      where radius is a double, mass and duration are ints
// 
// document other supported types here


#ifndef _FIREWORKSSCRIPT_H_
#define _FIREWORKSSCRIPT_H_

#include "movingobject.h"

// Do not modify the following two lines:
#include <fstream>
using namespace std;


class FireworksScript {
public:
  FireworksScript(const char scriptFilename[]);

  //
  // methods
  //

  // returns true when there are no more fireworks to be read from 
  // the script file
  bool isEmpty() { return (!scriptStream); }

  // reads launch time and firework parameters for next firework in 
  // in given script file; sets pointer to new firework instance
  // (dynamically allocated) and sets launchTime; sets pointer to 
  // NULL if no more firework data in script file
  void getNextFirework(MovingObject *&ptrRef, int &launchTimeRef);

protected:

  //
  // member variables
  // 

  // opened using filename given in constructor
  ifstream scriptStream;
};


#endif // _FIREWORKSSCRIPT_H_