abstractFactory.cpp

#include <iostream>
#include <vector>

class SpriteSet
{
public:
	SpriteSet(int count) { m_count = count; }
	void render() { std::cout << m_count << " sprites\n"; }
private:
	int m_count;
};

class IScreenFactory
{
public:
	virtual SpriteSet* makeSprites() = 0;
};

class MenuScreenFactory : public IScreenFactory
{
public:
	MenuScreenFactory(bool full) { m_full = full; }
	SpriteSet* makeSprites() { return (m_full) ? new SpriteSet(22) : new SpriteSet(11); }
private:
	bool m_full;
};

class TunerScreenFactory : public IScreenFactory
{
public:
	TunerScreenFactory(bool bass) { m_bass = bass; }
	SpriteSet* makeSprites() { return (m_bass) ? new SpriteSet(4) : new SpriteSet(6); }
private:
	bool m_bass;
};

int main()
{
	SpriteSet* sprites;
		
	MenuScreenFactory msf(true);
	sprites = msf.makeSprites();

	sprites->render();
	TunerScreenFactory tsf(true);
	
	delete[] sprites;
	sprites = tsf.makeSprites();

	sprites->render();
	delete[] sprites;
	
	return 0;
}