mrnom game 기초 분석 - Game, Screen, Pool

public interface Game {

public Input getInput(); 

public FileIO getFileIO(); 

public Graphics getGraphics(); 

public Audio getAudio(); 

public void setScreen(Screen screen); 

public Screen getCurrentScreen(); 

public Screen getStartScreen(); 

}

---

public abstract class Screen {

protected final Game game;

public Screen(Game game) {

this.game = game;

}

public abstract void update(float deltaTime);

public abstract void present(float deltaTime); 

public abstract void pause(); 

public abstract void resume(); 

public abstract void dispose(); 

}

---

public class Pool<T> {   // Garbage Collector를 사용함

public interface PoolObjectFactory<T>{

public T createObject();

}

private final List<T> freeObjects; 

private final PoolObjectFactory<T> factory; 

private final int maxSize;

public Pool(PoolObjectFactory<T> factory, int maxSize) {

this.factory = factory;

this.maxSize = maxSize;

this.freeObjects = new ArrayList<T>(maxSize); 

}

public T newObject() {

T object = null;

if (freeObjects.size() == 0)

object = factory.createObject(); 

else

object = freeObjects.remove(freeObjects.size() - 1); 

return object;

}

public void free(T object) {

if (freeObjects.size() < maxSize)

freeObjects.add(object); 

}

}