功能：
- 点击”摇杆“开始；
- 两种结束滚动方式，A:点击”摇杆“ B:分别点击 对应结果框的按钮；
- 实现最后减速停下来效果，模拟真实摇奖机。
知识点:A.线程的控制，B.图片轮播原理
效果图：
- 窗口类
package com.gxlee.lhj;
import java.awt.Color;
import java.awt.Container;
import java.awt.Graphics;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
import javax.swing.JFrame;
import javax.swing.JPanel;
@SuppressWarnings("serial")
public class MainFrame extends JFrame {
private List<Fruit> fruits;
private boolean running = false;
private Random r = new Random();
private String backimg = "bg.png";
private int fruitOver = 0;
public MainFrame() {
// 构造函数
this.setTitle("摇奖机 v1.0");
this.setSize(Utils.WIDTH, Utils.HEIGHT);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setLocationRelativeTo(null);
this.setResizable(false);
Container c = getContentPane();
MyPanel zb = new MyPanel();
c.add(zb);
fruits = new ArrayList<Fruit>();
// 添加3个
for (int i = 0; i < 3; i++) {
Fruit fruit = new Fruit();
fruit.setIndex(r.nextInt(6));
fruits.add(fruit);
}
this.addMouseListener(new MousClick());
this.setVisible(true);
}
public class MyPanel extends JPanel {
protected void paintComponent(Graphics g) {
g.fillRect(0, 0, Utils.WIDTH, Utils.HEIGHT);
g.drawImage(Utils.images.get(backimg), 0, 0, Utils.WIDTH,
Utils.HEIGHT, this);
BufferedImage image = Utils.images.get("fruit.jpg");
BufferedImage subImg = null;
// 画水果
if (!running && fruitOver == 3) {
int i = 0;
for (Fruit f : fruits) {
subImg = image.getSubimage(f.getIndex() * 94, 0, 94, 102);
g.drawImage(subImg, 84 + (i++ * (67 + 9)), 313, 67, 100,
this);
}
} else {
int i = 0;
for (Fruit f : fruits) {
int index = f.getIndex();
int offset = f.getOffset();
int nextIndex = 0;
// 如果offset == 0 的话 或者已经移动到 就只需要一张
if (!f.isAlive() || offset == 0) {
subImg = image.getSubimage(f.getIndex() * 94, 0, 94,
102);
g.drawImage(subImg, 84 + ((i) * (67 + 9)), 313, 67, 100,
this);
i+=1;
continue;
}
// 得到下一张图的index
nextIndex = (index == 5) ? 0 : index + 1;
// 画第一张
subImg = image.getSubimage(index * 94, 0, 94, 102 - offset);
g.drawImage(subImg, 84 + (i * (67 + 9)), 313 + offset, 67,
100 - offset, this);
// 画第二张
subImg = image.getSubimage(nextIndex * 94, 102 - offset,
94, offset);// 取得子图标
g.drawImage(subImg, 84 + (i * (67 + 9)), 313, 67, offset,
this);
i+=1;
}
}
g.setColor(new Color(181, 36, 43));
g.fillRect(84, 358, 220, 6);
}
}
public class MousClick extends MouseAdapter {
@Override
public void mouseClicked(MouseEvent e) {
int x = e.getX();
int y = e.getY();
//如果按的是开始摇杆
if(x<=415 && x>=371){
if(y<=200 && y>=160){
running = true ^ running;
new ShowBackGroud().start();
if(running){
fruitOver = 0;
fruits.clear();
for (int i = 0; i < 3; i++) {
Fruit f = new Fruit();
f.setIndex(r.nextInt(6));
f.setRunning(true);
fruits.add(f);
new MyThread(f, 70 + i * 10).start();
f.setAlive(true);
}
}else{
for (Fruit f : fruits) {
f.setRunning(false);
}
}
}
return;
}
int index = -1;
if(y<=495 && y>=480){
if(x>=60 && x<=90){
//第一个按钮
index = 0;
}else if(x>=106 && x<=140){
//第二个按钮
index = 1;
}else if(x>=153 && x<=182){
//第三个按钮
index = 2;
}
if(running && index >-1)
fruits.get(index).setRunning(false);
}
}
}
public static void main(String[] args) {
new MainFrame();
}
public class MyThread extends Thread {
public Fruit f;
public int speed;//最后慢下来时候的初始速度
public int sleep = 40;//休眠时长
public int offset;//当传递一个速度是 要完成N张图片的正好播放完产生一个偏移位置
public MyThread(Fruit f, int delay) {
this.f = f;
this.speed = delay;
offset = getOffset(delay);
}
public int getOffset(int delay){
int sum = 0;
for(int i = 1;i<=delay;i++){
sum +=i;
}
return sum % 102;
}
@Override
public void run() {
while (f.isRunning()) {
f.setSpeed(90);// r.nextInt(70)+10 区别不大
try {
Thread.sleep(40);
} catch (InterruptedException e) {
}
repaint();
}
// 停止的时候
//修正距离 从速度N开始减 速度每减1
//70开始的话 能走 2485：2485%102 = 37
// 80的话 3240%102= 78 90%4095%102=15
f.setDistance(offset, true);//留一个像素
int sum = 0;
while (f.isAlive()) {
//缓慢下来的效果
f.setSpeed(speed);
sum += speed;
speed-- ;
try {
Thread.sleep(sleep+=3);
} catch (InterruptedException e) {
}
repaint();
}
synchronized (new Object()) {
fruitOver++;
}
}
}
public class ShowBackGroud extends Thread {
@Override
public void run() {
backimg = "bg2.png";
try {
Thread.sleep(500);
} catch (InterruptedException e) {
}
backimg = "bg.png";
}
}
}
- 水果类
package com.gxlee.lhj;
public class Fruit {
private int index = 0;
private int nextIndex = 0;
private int maxIndex = 5;
private int width=94 ;//单个图片的宽度 并
private int height = 102;//图片的高度 后面并没有用到 全部写死
private int distance;
private boolean alive = true;
private boolean running ;
private int speed;
private int offset;
public void setSpeed(int speed){
if (speed<=0){
speed = 0;
alive = false;
}
this.speed = speed;
setDisttance(distance+= speed);
}
public boolean isRunning() {
return running;
}
public void setRunning(boolean running) {
this.running = running;
}
public int getNextIndex() {
return nextIndex;
}
public void setNextIndex(int nextIndex) {
this.nextIndex = nextIndex;
}
public int getOffset() {
return offset;
}
public void setOffset(int offset) {
this.offset = offset;
}
public int getSpeed() {
return speed;
}
public boolean isAlive() {
return alive;
}
public void setAlive(boolean alive) {
this.alive = alive;
}
public int getDistance() {
return distance;
}
public void setDistance(int offset, boolean flag ) {
int nextIndex = index==5?0:index+1;
int dis = nextIndex*102+102-(offset);
setDisttance(dis);
}
public void setDisttance(int distance){
if(distance>=6*102){distance = distance % 102;}
this.distance = distance;
index = distance / 102;
offset = distance % 102;
nextIndex = (index == 5) ? 0 : index + 1;
}
public void setIndex(int index){
this.index = index;
distance = index*height;
}
public int getHeight(){
return height;
}
public int getIndex() {
return index;
}
public int getMaxIndex() {
return maxIndex;
}
public void setMaxIndex(int maxIndex) {
this.maxIndex = maxIndex;
}
public int getWidth() {
return width;
}
}
- 工具类
package com.gxlee.lhj;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import javax.imageio.ImageIO;
public class Utils {
public static Map<String, BufferedImage> images = new HashMap<String,BufferedImage>();
public static final int WIDTH = 440;
public static final int HEIGHT =600;
public static final int FRUIT_WIDTH = 94;
public static final int FRUIT_HEIGHT = 102;
static{
File dir = new File("img");
File[] files = dir.listFiles();
for (File file:files) {
try {
BufferedImage image = ImageIO.read(file);
images.put(file.getName(), image);
} catch (IOException e) {
//e.printStackTrace();
}
}
}
}
素材：
- 主界面：
- 水果: