飞机大战
偶然看到有游戏帖子，闲来无事拿过来修改了一下，改动较大故新开一贴。这个其实前台写的话可能更快一点。
程序代码：package com.leng.frame;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.util.List;
import java.util.Timer;
import java.util.stream.Collectors;
import javax.swing.*;
public class Test extends JFrame implements MouseListener, MouseMotionListener {
/**
*
*/
private static final long serialVersionUID = 1L;
private static final int START = 0,
RUNNING = 1,
PAUSE = 2,
OVER = 3,
DEFAULT_WIDTH = 610,
DEFAULT_HEIGHT = 506;
private int state = START;
private MoveObj self = new MoveObj(0, 0, 40, 40);
private List<MoveObj> enemys = new ArrayList<>();
private List<MoveObj> bullets = new ArrayList<>();
public Test() {
setVisible(true);
setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
setDefaultCloseOperation(EXIT_ON_CLOSE);
addMouseListener(this);
addMouseMotionListener(this);
setResizable(false);
JPanel myPanel = new MyPanel();
add(myPanel);
new Timer().schedule(new TimerTask() {
@Override
public void run() {
if(state == RUNNING) {
addEnemyAction();
shootAction();
bangAction();
moveAction();
outOfBorderAction();
checkGameOver();
moveIndex++;
}
myPanel.repaint();
}
}, 10, 10);
}
protected void checkGameOver() {
for(MoveObj obj : enemys) {
if(self.x + self.width > obj.x && self.x < obj.x + obj.width &&
self.y + self.height > obj.y && self.y < obj.y + obj.height) {
state = OVER;
enemys.clear();
bullets.clear();
return;
}
}
}
long moveIndex = 0;
protected void outOfBorderAction() {
enemys = enemys.stream().filter(MoveObj::isNotOutOfBorder)
.collect(Collectors.toList());
bullets = bullets.stream().filter(MoveObj::isNotOutOfBorder)
.collect(Collectors.toList());
}
protected void moveAction() {
if(moveIndex % 2 == 0) {
enemys.forEach(ele->ele.y+=1);
bullets.forEach(ele->ele.y-=2);
}
}
protected void bangAction() {
for(MoveObj b:new ArrayList<>(bullets)) {
for(MoveObj e:new ArrayList<>(enemys)) {
if(b.bang(e)) {
bullets.remove(b);
enemys.remove(e);
break;
}
}
}
}
protected void shootAction() {
// 0.2s
if(moveIndex % 20 == 0) {
bullets.add(new MoveObj(self.x+self.width/2, self.y, 8, 12));
}
}
protected void addEnemyAction() {
// 2s
if(moveIndex % 200 == 0) {
int x = new Random().nextInt(DEFAULT_WIDTH - 40);
enemys.add(new MoveObj(x, 0, 40, 40));
}
}
// my plan
Image myplanImage = new ImageIcon("image/MyPlane.png").getImage();
// area map
Image gameMap = new ImageIcon("image/map/gamemap.jpg").getImage();
// enemy
Image enemyImage = new ImageIcon("image/monster/PlaneOne.png").getImage();
// bullet
Image bulletImage = new ImageIcon("image/bullet.png").getImage();
class MyPanel extends JPanel {
/**
*
*/
private static final long serialVersionUID = 1L;
@Override
public void paint(Graphics g) {
g.drawImage(gameMap, 0, 0, DEFAULT_WIDTH, DEFAULT_HEIGHT, null);
g.drawImage(myplanImage, self.x, self.y, self.width, self.height, null);
enemys.forEach(e->g.drawImage(enemyImage, e.x, e.y, e.width, e.height, null));
bullets.forEach(e->g.drawImage(bulletImage, e.x, e.y, e.width, e.height, null));
Font font = new Font("gbk", Font.BOLD, 32);
g.setFont(font);
g.setColor(Color.RED);
switch(state) {
case START:
g.drawString("开始", DEFAULT_WIDTH/3, DEFAULT_HEIGHT/2);
break;
case PAUSE:
g.drawString("暂停", DEFAULT_WIDTH/3, DEFAULT_HEIGHT/2);
break;
case OVER:
g.drawString("结束", DEFAULT_WIDTH/3, DEFAULT_HEIGHT/2);
break;
}
}
}
public static void main(String[] args) {
new Test();
}
@Override
public void mouseClicked(MouseEvent e) {
if(state == START)
state = RUNNING;
else if(state == OVER)
state = START;
}
@Override
public void mousePressed(MouseEvent e) {}
@Override
public void mouseReleased(MouseEvent e) {}
@Override
public void mouseEntered(MouseEvent e) {
if(state == PAUSE)
state = RUNNING;
}
@Override
public void mouseExited(MouseEvent e) {
if(state == RUNNING)
state = PAUSE;
}
@Override
public void mouseDragged(MouseEvent e) {}
@Override
public void mouseMoved(MouseEvent e) {
if(state == RUNNING) {
self.x = e.getX() - 20;
self.y = e.getY() - 40;
}
}
class MoveObj {
int x;
int y;
int width;
int height;
public MoveObj(int x, int y, int width, int height) {
super();
this.x = x;
this.y = y;
this.width = width;
this.height = height;
}
public boolean bang(MoveObj e) {
return x+width>e.x&&x<e.x+e.width&&y+height>e.y&&y<e.y+e.height;
}
public boolean isNotOutOfBorder() {
return !(x < 0 || y < 0 || x + width > DEFAULT_WIDTH || y + height > DEFAULT_HEIGHT);
}
}
}
写的比较仓促，相关的参数没有仔细校验，不足之处欢迎指正。
