Day 3: Identify Behaviors

Today, game is an important industrial of software, one of most important features that a game must have is the extensible capacity. As an architect, you know the meaning of “implement into interface not into implementation”, so you must:

Create an interface for actor that can do :

- forward()

- jump()

- blink()

Code:

public class Game implements Movement

{

    private Square player;

    

    public Game()

    {

        player = new Square();

        player.makeVisible();

    }

    public void Forward() {

        player.moveRight();

    }

    

    public void Backward() {

        player.moveLeft();

    }

    

    public void Jump() {

        player.slowMoveVertical(-100);

        player.slowMoveVertical(100);

    }

    

    public void BlinkForward() {

        player.makeInvisible();

        player.moveHorizontal(150);

        player.makeVisible();

    }

    

    public void BlinkBackward() {

        player.makeInvisible();

        player.moveHorizontal(-150);

        player.makeVisible();

    }

}

Make an explanation of “implement into interface not into implementation” for your team

What is advantage or disadvantage of using interface in software development?

• Advantages:
• Những class khi implement từ interface sẽ tuân theo những gì (methods..) mà interface đã định ra.
• Disadvantages
• Nếu 1 class khi implement từ interface không muốn sử dụng 1 số phương thức ( Methods) có sẵn trong interface vẫn phải sử dụng.