春节将至，给身边的人放一场烟花(java)
新春将至，使用Java送祝福，给亲友们放个烟花。
效果展示
核心逻辑
加载背景
public void paint(Graphics g) {
ImageIcon image = new ImageIcon("src\\main\\resources\\image\\1.jpg");
getGraphics().drawImage(image.getImage(), 0, 0, getSize().width, getSize().height, this);
super.paint(g);
}
编写线程的run函数，使得烟花升起，爆炸，消失
public void run() {
//已移动量,会递减，直到大于鼠标点击的y坐标
int hasMoved = panelHeight;
//需要一个线程级变量来存储单个线程的坐标
int threadyClick = yClick;
int threadxClick = xClick;
//新建一个Graphics变量
Graphics graphics = getGraphics();
int v;
v = 3;
//rgb颜色变量
int r, g, b;
//烟花上升过程
while (threadyClick < hasMoved) {
hasMoved -= upSpeed;
graphics.setColor(new Color(247, 247, 248));
graphics.fillOval(threadxClick, hasMoved, upWidth, upHeight);
for (int j = 0; j <= 10; j++) {
graphics.setColor(new Color(247, 247, 248));
graphics.fillOval(threadxClick, hasMoved + j * upSpeed, upWidth, upHeight);
}
graphics.setColor(Color.black);
graphics.fillOval(threadxClick, hasMoved + upSpeed * 10, upWidth, upHeight);
try {
Thread.currentThread().sleep(v++);
} catch (InterruptedException e) {
}
}
//置黑色
for (int j = 10; j >= 0; j--) {
graphics.setColor(Color.black);
graphics.fillOval(threadxClick, hasMoved + (j * upSpeed), upWidth, upHeight);
try {
Thread.currentThread().sleep((v++) / 3);
} catch (InterruptedException e) {
}
}
hasMoved = panelHeight;
while (hasMoved > threadyClick) {
graphics.setColor(Color.black);
graphics.fillOval(threadxClick - 2, hasMoved, upWidth, upHeight);
hasMoved -= upSpeed;
}
int atX = threadxClick;
int atY = threadyClick;
//初始化x、y方向初速度
int x0 = 0;
int y0 = 0;
int[][] xPoints = new int[boomNum][400];
int[][] yPoints = new int[boomNum][400];
int[] usedSize = new int[boomNum];
for (int j = 0; j < boomNum; j++) {
x0 = (int) (Math.random() * (sumV * 2 + 1)) - sumV;
// y0 = (int) (Math.random() * verV) - verV / 2;
int yinit = (int) Math.sqrt(sumV * sumV - x0 * x0);
y0 = yinit >= 0 ? yinit : -yinit;
y0 = (int) (Math.random() * y0);
for (int i = 0; i < 400; i++) {
int y = (int) (y0 * i * freq - 0.5 * G * i * i * freq * freq - 0.5 * GM * i * i * freq * freq);
int x = (int) (x0 * i * freq - 0.5 * GM * i * i * freq * freq);
// x = Math.abs(x) > Math.abs(atX - xPoints[j][i - 1]) ? x : atX - xPoints[j][i - 1];
if (x * x + y * y <= d * d) {
xPoints[j][i] = atX - x;
yPoints[j][i] = atY - y;
usedSize[j]++;
} else {
break;
}
}
}
v = 20;
r = (int) (Math.random() * (255 - 200 + 1) + 200);
g = (int) (Math.random() * (255 - 150 + 1) + 150);
b = (int) (Math.random() * (255 - 10 + 1) + 10);
for (int j = 0; j <= 30; j++) {
for (int i = 0; i < boomNum; i++) {
//剔除空值
int pointSize = 0;
int[] thisPointsx = new int[400];
int[] thisPointsy = new int[400];
for (int size = 0; size < xPoints[i].length; size++) {
if (xPoints[i][size] != 0 && yPoints[i][size] != 0) {
thisPointsx[pointSize] = xPoints[i][size];
thisPointsy[pointSize] = yPoints[i][size];
pointSize++;
}
}
if (j < boomLength) {
graphics.setColor(new Color(247, 247, 248));
graphics.fillOval(thisPointsx[j], thisPointsy[j], boomWidth + 10, boomHeight);
} else {
graphics.setColor(new Color(r, g, b));
graphics.fillOval(thisPointsx[j], thisPointsy[j], boomWidth, boomHeight);
}
// graphics.drawPolyline(thisPointsx, thisPointsy, usedSize[i]);
if (j >= boomLength) {
graphics.setColor(Color.black);
// graphics.drawPolyline(thisPointsx, thisPointsy, j - boomLength);
graphics.fillOval(thisPointsx[j - boomLength], thisPointsy[j - boomLength], boomWidth + 10, boomHeight);
}
}
v++;
v = Math.min(v, 150);
try {
Thread.currentThread().sleep(v);
} catch (InterruptedException e) {
}
}
for (int i = 0; i < boomNum; i++) {
for (int j = 0; j < 100; j++) {
graphics.setColor(Color.black);
// graphics.drawPolyline(xPoints[i], yPoints[i], 100);
graphics.fillOval(xPoints[i][j], yPoints[i][j], boomWidth, boomHeight);
}
}
}
触发函数，点击屏幕会创建烟花线程
public void mousePressed(MouseEvent e) {
xClick = e.getX();
yClick = e.getY();
Thread thread = new Thread(this);
thread.start();
}
主函数中创建frame类，将烟花类添加进页面中
public static void main(String args[]) throws InterruptedException {
FireFlower fireFlower = new FireFlower();
JFrame frame = new JFrame("新年快乐");
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
frame.getContentPane().add(fireFlower, BorderLayout.CENTER);
frame.setSize(panelLength, panelHeight);
//背景色黑色
fireFlower.setBackground(Color.black);
fireFlower.init();
fireFlower.start();
frame.setVisible(true);
Random rand = new Random();
for(int i=0;i<1000;i++){
int sec = rand.nextInt(1000);
fireFlower.xClick = rand.nextInt(1600);
fireFlower.yClick = rand.nextInt(800);
Thread thread = new Thread(fireFlower);
thread.sleep(sec);
thread.start();
}
}
完整代码
import java.awt.*;
import java.applet.*;
import java.awt.event.*;
import java.util.Random;
import javax.swing.*;
public class FireFlower extends Applet implements MouseListener, Runnable {
int xClick = 0, yClick = 0;
static int panelLength = 1600;
static int panelHeight = 800;
//烟花上升速度
static int upSpeed = 5;
//爆炸条数
static int boomNum = 100;
//重力加速度
static double G = 9.8;
//摩擦力加速度
static double GM = 5;
//半径
static int d = 1500;
//频率
static double freq = 0.08;
//烟花炸开时保留长度
static int boomLength = 7;
//上升图形宽度
static int upWidth = 5;
//上升高度
static int upHeight = 5;
//爆炸点宽度
static int boomWidth = 3;
//爆炸点高度
static int boomHeight = 3;
//水平速度
static int horV = 50;
//竖直速度
static int verV = 40;
//总速度
static int sumV = 60;
FireFlower() {
addMouseListener(this);
}
@Override
public void paint(Graphics g) {
ImageIcon image = new ImageIcon("src\\main\\resources\\image\\1.jpg");
getGraphics().drawImage(image.getImage(), 0, 0, getSize().width, getSize().height, this);
super.paint(g);
}
@Override
public void paintComponents(Graphics g) {
super.paintComponents(g);
}
/**
* 使该程序能够作为应用程序执行。
*/
public static void main(String args[]) throws InterruptedException {
FireFlower fireFlower = new FireFlower();
JFrame frame = new JFrame("新年快乐");
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
frame.getContentPane().add(fireFlower, BorderLayout.CENTER);
frame.setSize(panelLength, panelHeight);
//背景色黑色
fireFlower.setBackground(Color.black);
fireFlower.init();
fireFlower.start();
frame.setVisible(true);
Random rand = new Random();
for(int i=0;i<1000;i++){
int sec = rand.nextInt(1000);
fireFlower.xClick = rand.nextInt(1600);
fireFlower.yClick = rand.nextInt(800);
Thread thread = new Thread(fireFlower);
thread.sleep(sec);
thread.start();
}
}
/**
* 点击会产生一个线程来执行烟花升空
*/
public void run() {
//已移动量,会递减，直到大于鼠标点击的y坐标
int hasMoved = panelHeight;
//需要一个线程级变量来存储单个线程的坐标
int threadyClick = yClick;
int threadxClick = xClick;
//新建一个Graphics变量
Graphics graphics = getGraphics();
int v;
v = 3;
//rgb颜色变量
int r, g, b;
//烟花上升过程
while (threadyClick < hasMoved) {
hasMoved -= upSpeed;
graphics.setColor(new Color(247, 247, 248));
graphics.fillOval(threadxClick, hasMoved, upWidth, upHeight);
for (int j = 0; j <= 10; j++) {
graphics.setColor(new Color(247, 247, 248));
graphics.fillOval(threadxClick, hasMoved + j * upSpeed, upWidth, upHeight);
}
graphics.setColor(Color.black);
graphics.fillOval(threadxClick, hasMoved + upSpeed * 10, upWidth, upHeight);
try {
Thread.currentThread().sleep(v++);
} catch (InterruptedException e) {
}
}
//置黑色
for (int j = 10; j >= 0; j--) {
graphics.setColor(Color.black);
graphics.fillOval(threadxClick, hasMoved + (j * upSpeed), upWidth, upHeight);
try {
Thread.currentThread().sleep((v++) / 3);
} catch (InterruptedException e) {
}
}
hasMoved = panelHeight;
while (hasMoved > threadyClick) {
graphics.setColor(Color.black);
graphics.fillOval(threadxClick - 2, hasMoved, upWidth, upHeight);
hasMoved -= upSpeed;
}
int atX = threadxClick;
int atY = threadyClick;
//初始化x、y方向初速度
int x0 = 0;
int y0 = 0;
int[][] xPoints = new int[boomNum][400];
int[][] yPoints = new int[boomNum][400];
int[] usedSize = new int[boomNum];
for (int j = 0; j < boomNum; j++) {
x0 = (int) (Math.random() * (sumV * 2 + 1)) - sumV;
// y0 = (int) (Math.random() * verV) - verV / 2;
int yinit = (int) Math.sqrt(sumV * sumV - x0 * x0);
y0 = yinit >= 0 ? yinit : -yinit;
y0 = (int) (Math.random() * y0);
for (int i = 0; i < 400; i++) {
int y = (int) (y0 * i * freq - 0.5 * G * i * i * freq * freq - 0.5 * GM * i * i * freq * freq);
int x = (int) (x0 * i * freq - 0.5 * GM * i * i * freq * freq);
// x = Math.abs(x) > Math.abs(atX - xPoints[j][i - 1]) ? x : atX - xPoints[j][i - 1];
if (x * x + y * y <= d * d) {
xPoints[j][i] = atX - x;
yPoints[j][i] = atY - y;
usedSize[j]++;
} else {
break;
}
}
}
v = 20;
r = (int) (Math.random() * (255 - 200 + 1) + 200);
g = (int) (Math.random() * (255 - 150 + 1) + 150);
b = (int) (Math.random() * (255 - 10 + 1) + 10);
for (int j = 0; j <= 30; j++) {
for (int i = 0; i < boomNum; i++) {
//剔除空值
int pointSize = 0;
int[] thisPointsx = new int[400];
int[] thisPointsy = new int[400];
for (int size = 0; size < xPoints[i].length; size++) {
if (xPoints[i][size] != 0 && yPoints[i][size] != 0) {
thisPointsx[pointSize] = xPoints[i][size];
thisPointsy[pointSize] = yPoints[i][size];
pointSize++;
}
}
if (j < boomLength) {
graphics.setColor(new Color(247, 247, 248));
graphics.fillOval(thisPointsx[j], thisPointsy[j], boomWidth + 10, boomHeight);
} else {
graphics.setColor(new Color(r, g, b));
graphics.fillOval(thisPointsx[j], thisPointsy[j], boomWidth, boomHeight);
}
// graphics.drawPolyline(thisPointsx, thisPointsy, usedSize[i]);
if (j >= boomLength) {
graphics.setColor(Color.black);
// graphics.drawPolyline(thisPointsx, thisPointsy, j - boomLength);
graphics.fillOval(thisPointsx[j - boomLength], thisPointsy[j - boomLength], boomWidth + 10, boomHeight);
}
}
v++;
v = Math.min(v, 150);
try {
Thread.currentThread().sleep(v);
} catch (InterruptedException e) {
}
}
for (int i = 0; i < boomNum; i++) {
for (int j = 0; j < 100; j++) {
graphics.setColor(Color.black);
// graphics.drawPolyline(xPoints[i], yPoints[i], 100);
graphics.fillOval(xPoints[i][j], yPoints[i][j], boomWidth, boomHeight);
}
}
}
public void mouseClicked(MouseEvent e) {
}
/**
* 监听鼠标按键
*
* @param e
*/
public void mousePressed(MouseEvent e) {
xClick = e.getX();
yClick = e.getY();
Thread thread = new Thread(this);
thread.start();
}
public void mouseReleased(MouseEvent e) {
}
public void mouseEntered(MouseEvent e) {
}
public void mouseExited(MouseEvent e) {
}
}
项目链接
地址