/* University College London Dept of P&A course in C++ 3C59 
| all rights reserved 2000
|
| Module:  Polymorphism: 
|
| Class: SuperHero + sub classes
|
|   
| Author: P.Clarke 
*/



#include <string>


//=======================  Base class =================================
// SuperHero 
//=====================================================================

class SuperHero
{

private:

  // Basic superhereo stuff
  int m_strength;
  int m_numberOfLives;
  int m_weaponStrength ;
  std::string m_name ;


public:

  // methods which we dont want to be overridden
  void addLife() ;
  std::string name() ;

  // Methods we expect to be overridden in sub classes
  virtual bool isAlive( ) ;
  virtual bool canFight( ) ;
  virtual int  power( ) ;
  virtual void fightResult( bool result ) ;
  virtual std::string  announce( ) ;

  //Constructor
  SuperHero( std::string name, int strength, int numberOfLives, int weaponStrength ) ;

};



//================================ sub class =============================
// InvisibleSuperHero 
//===================================================================

// Here we add variables and methods to do with whether the hero is 
// invisible or not

class InvisibleSuperHero : public SuperHero
{
private:

  // Extra members 
  bool m_isInvisible ;

public: 

  // Extra methods to change visibility state
  void disappear() ;
  void appear() ;
 
  // Methods we need to override :
  virtual int power( ) ;              // need to modify power if invisible
  virtual std::string announce();     // modify announcment message

  // Constructor
  InvisibleSuperHero( std::string name, int strength, int numberOfLives, int weaponStrength ) ;

};



//========================= sub class ===============================
// FlyingSuperHero 
//===================================================================

// Here we add variables and methods to do with whether the hero is 
// flying or not

class FlyingSuperHero : public SuperHero
{
private:

  // Extra members for flying
  bool m_inAir ;

public: 

  // Extra methods
  void fly() ;
  void land() ;

  // Methods we need to override
  virtual bool canFight( ) ;
  virtual std::string announce() ;

  // Constructor
  FlyingSuperHero( std::string name, int strength, int numberOfLives, int weaponStrength ) ;

};



//============================= sub class ============================
// LifeSuckingSuperHero 
//===================================================================

// Here we add variables and methods to do with
// sucking the life of any hero it vanquishes

class LifeSuckingSuperHero : public SuperHero
{
private:

  // No Extra members 
 
public: 


  // Methods we need to override: 
  virtual void fightResult( bool result ) ;   // need to increment lives if we win
  virtual std::string announce() ;
 
  // Constructor
  LifeSuckingSuperHero( std::string name, int strength, int numberOfLives, int weaponStrength ) ;

};