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balls.java
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balls.java
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package game;
import java.util.*;
import java.awt.*;
public class Balls extends Rectangle
{
Random rand = new Random();
int xVelocity;
int yVelocity;
int speed = 2;
Balls(int x, int y, int width, int height)
{
super(x, y, width, height);
int x1 = rand.nextInt(2);
if (x1 == 0)
{
setxDirection(-speed);
}
else
{
setxDirection(speed);
}
int y1 = rand.nextInt(2);
if (y1 == 0)
{
setyDirection(-speed);
}
else
{
setyDirection(speed);
}
}
public void setyDirection(int i)
{
yVelocity = i;
}
public void setxDirection(int i)
{
xVelocity = i;
}
public void move()
{
x += xVelocity;
if (x < 0)
{
x = 0;
xVelocity *= -1;
}
if (x > BrickPanel.WIDTH - width)
{
x = BrickPanel.WIDTH - width;
xVelocity *= -1;
}
y += yVelocity;
if (y < 0)
{
y = 0;
yVelocity *= -1;
}
}
public void draw(Graphics g)
{
g.setColor(Color.BLUE);
g.fillOval(x, y, width, height);
}
public void setSpeed(double d, double e)
{
xVelocity += d;
yVelocity += e;
}
}