import java.util.Random; import processing.core.PApplet; import processing.core.
ID: 3698250 • Letter: I
Question
import java.util.Random;
import processing.core.PApplet;
import processing.core.PImage;
public class Ball1 extends PApplet {
private int nCols = 500;
private int nRows = 500;
Random r = new Random(213);
private int xPos, yPos;
private int m_xPos, m_yPos;
private int b_xPos, b_yPos;
private int dx,dy,bdx;
private boolean fired = false;
private boolean blocks[][] = new boolean[10][4];
public void setup(){
// code in setup is only done once
size(nCols,nRows);
xPos = 1; yPos=0;
b_xPos = nCols/2;b_yPos = nRows ;
m_xPos = b_xPos + 20; m_yPos = b_yPos-10;
dx = 1; dy=2;
}// end setup
public void draw(){
int nextXpos;
background(255);
nextXpos = xPos + blocks[0].length * 80 + dx ;
if (nextXpos > nCols ) {
dx = -dx;
yPos+=dy;
} else if (xPos + dx <0) {
dx = -dx;
yPos+=dy;
}
xPos += dx;
fill(0,0,255);
drawBlocks();
fill(255,0,0);
check_Collisions();
if (m_yPos<10) {
fired = false;
m_xPos = b_xPos + 20; m_yPos = b_yPos-10;
}
if (fired) {
m_yPos -=4;
ellipse(m_xPos,m_yPos,10,20);
} else {
ellipse(m_xPos,m_yPos,10,20);
}
fill(0,200,0);
rect(b_xPos,b_yPos,40,10 );
}
public void mouseClicked(){
// nothing to be done 60 times/second
}
public void keyPressed(){
// nothing to be done 60 times/second
System.out.println(keyCode);
if (keyCode == RIGHT) {
if (!fired) { m_xPos +=2;}
b_xPos +=2;
} else if (keyCode == LEFT) {
if (!fired) {m_xPos-=2;}
b_xPos -=2;
}
if (keyCode == UP) {
fired = true;
}
}
public void drawBlocks() {
for (int i = 0; i<blocks.length;i++) {
for (int j = 0; j< blocks[i].length;j++) {
if (!blocks[i][j]) {
rect(i*80+xPos,j*20+yPos,75,15);}
}
}
}
public void check_Collisions() {
int middle_x, middle_y;
for (int i = 0; i<blocks.length;i++) {
for (int j = 0; j< blocks[i].length;j++) {
if (!blocks[i][j]) {
middle_x = i*80+xPos+38;
middle_y = j*20+yPos+8;
if (abs(m_xPos - middle_x) < 40 &&
abs(m_yPos - middle_y) < 10 ) {
fired = false;
m_xPos = b_xPos + 20; m_yPos = b_yPos-10;
blocks[i][j] = true;
}
}
}
}
}
}// end class Ball1
Change the code to include a class called Block, which would represent the rectangles. Rewrite the code using this block class.
Make each row of blocks a different color, chosen randomly at the start of the program.
Make the blocks move faster as the game progresses
If the blocks reach the level of the base , show “You Lost” in large letter in the center of the screen and end the program
If the blocks are completely gone, show “You Won” in large letter in the center of the screen and end the program
Reminder , the break-out games as is will be referenced on the Final.
Explanation / Answer
import processing.core.PApplet;
public class BouncingBall extends PApplet
{
private Ball[] balls;
public static void main(String[] args)
{
PApplet.main(new String[] {"BouncingBall"});
}
public void setup()
{
size(500, 500);
balls = new Ball[10];
for (int i = 0; i < balls.length; i++)
{
balls[i] = new Ball(this);
}
}
public void draw()
{
background(0);
for (Ball b: balls)
{
b.move();
b.display();
}
}
}
import processing.core.PApplet;
public class Ball
{
private PApplet applet;
private int size;
private float x, y, xSpeed, ySpeed;
private int r, g, b;
private int alpha;
public Ball(PApplet applet_, float x_, float y_, float xSpeed_, float ySpeed_)
{
applet = applet_;
x = x_;
y = y_;
xSpeed = xSpeed_;
ySpeed = ySpeed_;
size = 20;
}
public Ball(PApplet applet_)
{
applet = applet_;
size = 40;
r = (int)(Math.random() * 256);
g = (int)(Math.random() * 256);
b = (int)(Math.random() * 256);
x = (float)Math.random() * applet.width;
y = (float)Math.random() * applet.height;
xSpeed = (float)Math.random() * 3;
ySpeed = (float)Math.random() * 3;
alpha = 128; //(int)(Math.random() * 256);
}
public void display()
{
applet.fill(r, g, b, alpha);
applet.ellipseMode(applet.CENTER);
applet.ellipse(x, y, size, size);
}
public void move()
{
x += xSpeed;
y += ySpeed;
if (x > applet.width || x < 0)
{
xSpeed *= -1;
}
if (y > applet.height || y < 0)
{
ySpeed *= -1;
}
}
}
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.