实例介绍
【实例简介】学习java入门知识点集合
【实例截图】
【核心代码】
package com.tarena.shoot;
/**扩展 (完整版)
* 1.子弹与敌人撞上后，子弹消失
* 2.大飞机----打3次才死，死后得40分
* 3.大黄蜂----打5次才死，死后得60分，并且获得奖励:life 1，doubleFire
* */
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.Arrays;
import java.util.Random;
import java.util.Timer;
import java.util.TimerTask;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class ShootGame extends JPanel{
private static final long serialVersionUID = 1L;
public static final int WIDTH = 400;
public static final int HEIGHT = 654;
public static BufferedImage background;
public static BufferedImage start;
public static BufferedImage pause;
public static BufferedImage gameover;
public static BufferedImage airplane;
public static BufferedImage bee;
public static BufferedImage bullet;
public static BufferedImage hero0;
public static BufferedImage hero1;
public static BufferedImage bigyellowbee;
public static BufferedImage bossairplane;
Hero hero = new Hero();
FlyingObject[] flyings = {};
Bullet[] bullets = {};
private int state = 0;
public static final int START = 0;
public static final int PAUSE = 1;
public static final int RUNNING = 2;
public static final int GAMEOVER = 3;
static {
try {
background = ImageIO.read(ShootGame.class.getResource("background.png"));
start = ImageIO.read(ShootGame.class.getResource("start.png"));
pause = ImageIO.read(ShootGame.class.getResource("pause.png"));
gameover = ImageIO.read(ShootGame.class.getResource("gameover.png"));
airplane = ImageIO.read(ShootGame.class.getResource("airplane.png"));
bee = ImageIO.read(ShootGame.class.getResource("bee.png"));
bullet = ImageIO.read(ShootGame.class.getResource("bullet.png"));
hero0 = ImageIO.read(ShootGame.class.getResource("hero.png"));
hero1 = ImageIO.read(ShootGame.class.getResource("hero.png"));
bigyellowbee = ImageIO.read(ShootGame.class.getResource("bigyellowbee.png"));
bossairplane = ImageIO.read(ShootGame.class.getResource("bossairplane.png"));
} catch (IOException e) {
e.printStackTrace();
}
}
public FlyingObject nextOne(){
Random ran = new Random();
int type = ran.nextInt(20);
if(type<=1){
return new Bee();
}else if(type == 2){
return new BigYellowBee();
}else if(type == 3){
return new BossAirplane();
}else{
return new Airplane();
}
}
public void stepAction(){
for(int i = 0;i<flyings.length;i ){
flyings[i].step();
}
for(int i = 0;i<bullets.length;i ){
bullets[i].step();
}
hero.step();
}
int flyEnteredIndex = 0;
public void enteredAction(){
flyEnteredIndex ;
if(flyEnteredIndex%50==0){
FlyingObject f = nextOne();
flyings = Arrays.copyOf(flyings,flyings.length 1);
flyings[flyings.length-1] = f;
}
}
int shootIndex = 0;
public void shootAction(){
shootIndex ;
if(shootIndex%30==0){
Bullet[] bs = hero.shoot();
bullets = Arrays.copyOf(bullets,bullets.length bs.length);
System.arraycopy(bs,0,bullets,bullets.length-bs.length,bs.length);
}
}
public void outOfBoundsAction(){
int index = 0;
FlyingObject[] flyingLives = new FlyingObject[flyings.length];
for(int i = 0;i<flyings.length;i ){
FlyingObject f = flyings[i];
if(!f.outOfBounds()){
flyingLives[index] = f;
index ;
}
}
flyings = Arrays.copyOf(flyingLives,index);
index = 0;
Bullet[] bulletLives = new Bullet[bullets.length];
for(int i = 0;i<bullets.length;i ){
Bullet b = bullets[i];
if(!b.outOfBounds()){
bulletLives[index] = b;
index ;
}
}
bullets = Arrays.copyOf(bulletLives,index);
}
public void bangAction(){
int index = -1;//被撞的子弹的下标
for(int i = 0;i<bullets.length;i ){
if(bang(bullets[i])){
index = i;
}
if(index != -1){//删除被撞的子弹
Bullet temp = bullets[index];
bullets[index] = bullets[bullets.length-1];
bullets[bullets.length-1] = temp;
bullets = Arrays.copyOf(bullets,bullets.length-1);
}
}
}
int score = 0;
public boolean bang(Bullet b){
boolean flag = false;
int index = -1;
for(int i = 0;i<flyings.length;i ){
FlyingObject f = flyings[i];
if(f instanceof Airplane || f instanceof Bee){//判断撞上的是敌机还是小蜜蜂
if(f.shootBy(b)){
index = i;
flag = true;
break;
}
}
if(f instanceof BossAirplane){//撞上的是Boss机
if(f.shootBy(b)){
BossAirplane ba = (BossAirplane)f;
ba.substractLife();
if(ba.getLife()==0){
index = i;
break;
}
flag = true;
}
}
if(f instanceof BigYellowBee){//撞上的是大黄蜂
if(f.shootBy(b)){
BigYellowBee byb = (BigYellowBee)f;
byb.substractLife();
if(byb.getLife()==0){
index = i;
break;
}
flag = true;
}
}
}
if(index!=-1){
FlyingObject one = flyings[index];
if(one instanceof BigYellowBee){
BigYellowBee byb = (BigYellowBee)one;
score = byb.getScore();
hero.addDoubleFire();
hero.addLife();
}
if(one instanceof BossAirplane){
BossAirplane ba = (BossAirplane)one;
score = ba.getScore();
}
if(one instanceof Enemy){
Enemy e = (Enemy)one;
score = e.getScore();
}
if(one instanceof Award){
Award a = (Award)one;
int type = a.getType();
switch(type){
case Award.DOUBLE_FIRE:
hero.addDoubleFire();
break;
case Award.LIFE:
hero.addLife();
break;
}
}
FlyingObject temp = flyings[index];
flyings[index] = flyings[flyings.length-1];
flyings[flyings.length-1] = temp;
flyings = Arrays.copyOf(flyings,flyings.length-1);
}
return flag;
}
public void checkGameOverAction(){
if(isGameOver()){
state = GAMEOVER;
}
}
public boolean isGameOver(){
for(int i = 0;i<flyings.length;i ){
FlyingObject f = flyings[i];
if(hero.hit(f)){
hero.clearDoubleFire();
hero.substractLife();
FlyingObject temp = flyings[i];
flyings[i] = flyings[flyings.length-1];
flyings[flyings.length-1] = temp;
flyings = Arrays.copyOf(flyings,flyings.length-1);
}
}
return hero.getLife()<=0;
}
public void action(){
MouseAdapter ma = new MouseAdapter(){
public void mouseMoved(MouseEvent e){
if(state == RUNNING){
int x = e.getX();
int y = e.getY();
hero.moveTo(x, y);
}
}
public void mouseEntered(MouseEvent e){
if(state == PAUSE){
state = RUNNING;
}
}
public void mouseExited(MouseEvent e){
if(state == RUNNING){
state = PAUSE;
}
}
public void mouseClicked(MouseEvent e){
switch(state){
case START:
state = RUNNING;
break;
case GAMEOVER:
state = START;
hero = new Hero();
bullets = new Bullet[0];
flyings = new FlyingObject[0];
score = 0;
break;
}
}
};
this.addMouseListener(ma);
this.addMouseMotionListener(ma);
Timer timer = new Timer();
int intevel = 10;
timer.schedule(new TimerTask(){
@Override
public void run() {
if(state == RUNNING){
stepAction();
enteredAction();
shootAction();
outOfBoundsAction();
bangAction();
checkGameOverAction();
}
repaint();
}
}, intevel,intevel);
}
public void paint(Graphics g){
g.drawImage(background,0,0,null);
paintHero(g);
paintFlyingObjects(g);
paintBullets(g);
paintScoreAndLife(g);
paintState(g);
}
public void paintHero(Graphics g){
g.drawImage(hero.image,hero.x,hero.y,null);
}
public void paintFlyingObjects(Graphics g){
for(int i = 0;i<flyings.length;i ){
FlyingObject f = flyings[i];
g.drawImage(f.image, f.x, f.y,null);
}
}
public void paintBullets(Graphics g){
for(int i = 0;i<bullets.length;i ){
Bullet b = bullets[i];
g.drawImage(b.image, b.x, b.y,null);
}
}
public void paintScoreAndLife(Graphics g){
g.setColor(new Color(0xFF0000));
g.setFont(new Font(Font.SANS_SERIF,Font.BOLD,20));
g.drawString("SCORE:" score,15,25);
g.drawString("LIFE:" hero.getLife(),15,45);
}
public void paintState(Graphics g){
switch(state){
case START:
g.drawImage(start,0,0,null);
break;
case PAUSE:
g.drawImage(pause,0,0,null);
break;
case GAMEOVER:
g.drawImage(gameover,0,0,null);
break;
}
}
@SuppressWarnings("static-access")
public static void main(String[] args) {
JFrame jf = new JFrame("shoot");
ShootGame game = new ShootGame();
jf.add(game);
jf.setSize(WIDTH,HEIGHT);
jf.setAlwaysOnTop(true);
jf.setLocationRelativeTo(null);
jf.setDefaultCloseOperation(jf.EXIT_ON_CLOSE);
jf.setVisible(true);
game.action();
}
}
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