プログラマ専用SNS ミクプラ

コード:

//****************************************
//	待機
//****************************************
class PlayerWait : public State< cPlayer >
{
private:
	PlayerWait(){}
	PlayerWait( const PlayerWait& );
	PlayerWait& operator=( const PlayerWait& );
public:
	~PlayerWait(){}
	static PlayerWait* GetInstance()
	{
		static PlayerWait instance;
		return &instance;
	}
	void Enter( cPlayer* owner );
	void Execute( cPlayer* owner );
	void Exit( cPlayer* owner );
};
#define p_Stop ( PlayerWait::GetInstance() )

コード:

template< class T >
class State
{
public:
	virtual ~State(){}
	virtual void Enter(	T* owner ){ owner; }
	virtual void Execute( T* owner ){ owner; }
	virtual void Exit( T* owner ){ owner; }
};

コード:

class cPlayer 
{
private:
	State< cPlayer >*	state;
public:
	//	ステート切り替え
	void ChangeState( State< cPlayer >* newState )
	{
		if( state ){ state->Exit( this ); }
		state = newState;
		if( state ){ state->Enter( this ); }
	}
}

コード:

void PlayerRun::Execute( cPlayer* owner )
{
	//	待機へ
	owner->ChangeState( p_Stop );
}