Faire entrer en mouvement des balles affichées à l'écran dans mon application Java
Bonjour,
Je souhaite faire entrer en mouvement des balles crées au clic de la souris et affichées à l'écran de mon application Java sous NetBeans.
J'ai 3 fichiers java :
Main.java :
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| package balles;
import javax.swing.*;
public class Main {
public static void main(String[] args)
{
JFrame frame = new JFrame("Balles");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setLayout(new BoxLayout(frame.getContentPane(),BoxLayout.Y_AXIS));
Balles ballCanvas = new Balles();
frame.getContentPane().add(ballCanvas);
frame.pack();
frame.setVisible(true);
ballCanvas.start();
}
} |
Vector2d.java :
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| package balles;
public class Vector2d {
private float x;
private float y;
public Vector2d(float x, float y)
{
this.setX(x);
this.setY(y);
}
public void setX(float x) {
this.x = x;
}
public float getX() {
return x;
}
public void setY(float y) {
this.y = y;
}
public float getY() {
return y;
}
} |
Balles.java :
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| /*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package balles;
import java.awt.Dimension;
import java.awt.Canvas;
import java.awt.RenderingHints;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Color;
import java.awt.Point;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;
import java.awt.image.BufferStrategy;
/**
*
* @author
*/
public class Balles extends Canvas {
// Rendering / Buffer objects
private BufferStrategy strategy;
private Graphics2D g2;
// Ball objects
private Ball[] balls = new Ball[5000];
private Ball tempBall;
private Ball currentBall;
private int ballCount = 0;
public Balles() {
setPreferredSize(new Dimension(800, 600));
setIgnoreRepaint(true);
// Evénement(s) clic
MouseHandler mouseHandler = new MouseHandler();
addMouseMotionListener(mouseHandler);
addMouseListener(mouseHandler);
}
public void start()
{
mainStart();
}
public void mainStart()
{
while(true)
{
lance();
}
}
public void lance()
{
if (strategy == null || strategy.contentsLost())
{
// Creation BufferStrategy pour affichage
createBufferStrategy(2);
strategy = getBufferStrategy();
Graphics g = strategy.getDrawGraphics();
this.g2 = (Graphics2D) g;
}
this.g2.setRenderingHint (RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
// Affichage arrière plan
this.g2.setColor(Color.BLACK);
this.g2.fillRect(0, 0, getWidth(), getHeight());
// Affichage des objets
for(int i = 0; i < ballCount; i++)
{
balls[i].draw(this.g2);
}
if (!strategy.contentsLost()) strategy.show();
}
private class MouseHandler extends MouseAdapter implements MouseMotionListener
{
public void mousePressed(MouseEvent e)
{
tempBall = new Ball(e.getX(), e.getY(), 15);
tempBall.setLocation(new Point(e.getX(), e.getY()));
}
public void mouseReleased(MouseEvent e)
{
balls[ballCount] = tempBall;
ballCount++;
}
}
public class Ball implements Comparable<Ball>{
public Vector2d position;
private float radius;
private Point location;
private Point speed;
public Ball(float x, float y, float radius)
{
speed = new Point(10 , 10);
this.position = new Vector2d(x, y);
this.setRadius(radius);
}
public void draw(Graphics2D g2)
{
g2.setColor(new Color(255, 255, 255));
g2.fillOval( (int) (position.getX() - getRadius()), (int) (position.getY() - getRadius()), (int) (2 * getRadius()) , (int) (2 * getRadius()) );
}
public void setRadius(float radius) {
this.radius = radius;
}
public float getRadius() {
return radius;
}
public int compareTo(Ball ball) {
if (this.position.getX() - this.getRadius() > ball.position.getX() - ball.getRadius())
{
return 1;
}
else if (this.position.getX() - this.getRadius() < ball.position.getX() - ball.getRadius())
{
return -1;
}
else
{
return 0;
}
}
public void setLocation(Point location) {
this.location = location;
}
public Point getLocation() {
return location;
}
public Point getSpeed() {
return speed;
}
public void setSpeed(Point speed) {
this.speed = speed;
}
}
} |
A l'aide de l'import AWT : Point, comment faire que BufferStrategy me permette de changer la position des balles ?
D'avance merci pour votre aide.
