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java如何实现弹幕小游戏
这篇文章主要介绍java如何实现弹幕小游戏，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！
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具体内容如下
父类
import java.awt.*;
public class GameObject {
//游戏物体的父类
Image img;
double x,y;
int speed = 3;
int width,height;
public void drawSelf(Graphics g){
g.drawImage(img,(int)x,(int)y,null);
}
public GameObject(Image img, double x, double y, int X_speed,int Y_speed, int width, int height) {
this.img = img;
this.x = x;
this.y = y;
this.speed = speed;
this.width = width;
this.height = height;
}
public GameObject(Image img, double x, double y) {
this.img = img;
this.x = x;
this.y = y;
}
public GameObject(){ }
//返回物体所在的矩形，便于后续的碰撞检测
public Rectangle getRect(){
return new Rectangle((int)x,(int)y,width,height);
}
}弹幕类
import com.sun.xml.internal.ws.model.wsdl.WSDLPortProperties;
import java.awt.*;
public class Shell extends GameObject {
double degree;
public Shell() {
x = 200;
y = 200;
width = 10;
height = 10;
speed = 2;
speed = 2;
//弧度
degree = Math.random()*Math.PI*2;
}
public void draw(Graphics g){
Color c = g.getColor();
g.setColor(Color.YELLOW);
g.fillOval((int)x,(int)y,width,height);
//炮弹沿着任意角度去飞
x+=speed*Math.cos(degree);
y+=speed*Math.sin(degree);
if(x<0 || x> Constant.GAME_WIDTH-width){
degree = Math.PI - degree;
}
if(y<40 || y> Constant.GAME_HEIGHT-height){
degree = -degree;
}
g.setColor(c);
}
}飞机类
import java.awt.*;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
public class Plane extends GameObject{
boolean left,right,up,down;
boolean live = true; //飞机是否活着
boolean leftflag,rightflag,upflag,downflag;//这些布尔值判断当碰到上下左右的边框时的状态
//如果活着画出来
public void drawSelf(Graphics g){
if(live) {
g.drawImage(img, (int) x, (int) y, null);
//根据方向进行不同的移动
if (left) {
x -= speed;
}
if (right) {
x += speed;
}
if (up) {
y -= speed;
}
if (down) {
y += speed;
}
}
}
public Plane(Image img,double x,double y) {
this.img = img;
this.x = x;
this.y = y;
this.speed = 3;
this.width = img.getWidth(null);
this.height = img.getHeight(null);
}
//按下某个键，增加相应的方向
public void addDirection(KeyEvent e) {
switch (e.getKeyCode()) {
case KeyEvent.VK_LEFT:
left = true;
break;
case KeyEvent.VK_UP:
up = true;
break;
case KeyEvent.VK_RIGHT:
right = true;
break;
case KeyEvent.VK_DOWN:
down = true;
break;
}
}
//按下某个键，取消相应的方向
public void minusDirection(KeyEvent e) {
switch (e.getKeyCode()) {
case KeyEvent.VK_LEFT:
left = false;
break;
case KeyEvent.VK_UP:
up = false;
break;
case KeyEvent.VK_RIGHT:
right = false;
break;
case KeyEvent.VK_DOWN:
down = false;
break;
}
}
}爆炸类
import java.awt.*;
//爆炸类
public class Explode {
double x,y; //爆炸的位置
static Image[] imgs = new Image[16];
static {
for(int i=0;i<16;i++){
imgs[i] = PlayGameFrame.GameUtil.getImage("image/explode/e"+(i+1)+".gif");
imgs[i].getWidth(null);
}
}
int count;
public void draw(Graphics g){
if(count <= 15){
g.drawImage(imgs[count],(int)x,(int)y,null);
count++;
}
}
public Explode(double x,double y){
this.x = x;
this.y = y;
}
}常量类
public class Constant {
public static final int GAME_WIDTH = 500;
public static final int GAME_HEIGHT = 500;
}主类
import jdk.internal.cmm.SystemResourcePressureImpl;
import javax.imageio.ImageIO;
import javax.swing.*;
import java.awt.*;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.net.URL;
import java.awt.Rectangle;
import java.util.Date;
/**
*飞机游戏的主窗口
*/
class PlayGameFrame extends Frame {
Image planeImg= GameUtil.getImage("image/plane.png");
Image nightsky = GameUtil.getImage("image/nightsky.jpg");
//定义飞机的坐标
Plane plane = new Plane(planeImg,250,250);
//定义炮弹
Shell[] shells = new Shell[50];
Explode boom;
Date startTime = new Date();
Date endTime;
int period;//游戏持续的时间
/**
*画图
*/
@Override
public void paint(Graphics g) { //自动被调用，g这个变量相当于一个画笔
Color c = g.getColor();
super.paint(g);//防止黑屏
g.drawImage(nightsky,0,0,null);
plane.drawSelf(g);//画飞机
if(plane.x <= Constant.GAME_WIDTH-plane.width && plane.x >= 30 && plane.y <= Constant.GAME_HEIGHT-30 && plane.y >= 0) plane.speed = 10;
else plane.speed = -plane.speed;
//画出所有的炮弹
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新闻标题：java如何实现弹幕小游戏
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