Java Games Design Patterns: Learning Programming design patterns through games by yang hu

Author:yang hu [hu, yang]
Language: eng
Format: azw3, epub
Published: 2020-08-13T16:00:00+00:00

BluePlane.jav a in package com.iterator.game;

import java.awt.Graphics;

import java.awt.image.BufferedImage;

import java.util.*;

import java.util.concurrent.CopyOnWriteArrayList;

public class BluePlane extends Sprite {

private CopyOnWriteArrayList<Bullet> bulletList = new CopyOnWriteArrayList<Bullet>();

public BluePlane(int x, int y) {

super (x, y, ImageCache.get ("bluePlaneImage" ));

}

public void createBullets(){

if (this .bulletList .size()<100){

Bullet bullet = new RedBullet(-100, -100);

int x = this .getX() + this .getWidth() / 2 - bullet.getWidth() / 2;

int y = this .getY() - bullet.getHeight();

bullet.setX(x);

bullet.setY(y);

bullet.setVisible(true );

this .loadBullet(bullet);

}

}

public void loadBullet(Bullet bullet) {

bulletList .add(bullet);

}

public void drawBullets(Graphics g) {

Iterator<Bullet> iter = this .bulletList .iterator();

while (iter.hasNext()) {

Bullet bullet = iter.next();

if (bullet.isVisible()) {

bullet.draw(g);

}

}

}

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