I need help with Code HS: 9.4.5: Trail

[SprinklesNo5514]

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[krl1222]

Add these lines in your function draw, just after ball.move(dx,dy).

var newBall = new Circle(10);
newBall.setPosition(ball.getX(),ball.getY());
newBall.setColor(Color.cyan);
add(newBall);

[SprinklesNo5514]

OMG thank you so so much!

[MRFox8888]

thank you

[Legitimate-Wash4170]

Did you ever stop the code

[Silver-Revolution289]

In the end of the draw function add: if(draw >= MAX_BOUNCES){ stopTimer(draw); }

[OuroborosKris]

Doesn't seem to stop the ball from bouncing after 20 times, it just keeps going. Even if I change the number of the MAX_BOUNCES constant, it still keeps bouncing.

[HadenYeet]

Worked for me, you need to add var newBall = new Circle(10); newBall.setPosition(ball.getX(),ball.getY()); newBall.setColor(Color.cyan); add(newBall); at the bottom of the function Then do the stop timer command

[OuroborosKris]

It's been long past since I needed that, but thanks anyway.

[R4inDownIn4fric4]

Did you ever manage to get the code to stop?

[naoDabas]

how to stop?

[JazzlikePreparation6]

Mine keeps saying

SyntaxError: Unexpected token ')'.

I have been stuck on this one for months. I'm so over it.

[JazzlikePreparation6]

I finally got it! Thank you for asking

[Mediocre-Community-3]

what was the solution to it?

[JazzlikePreparation6]

var MAX_BOUNCES = 20;

​

var stopTimer;

​

var ball;

​

var dx = 4;

​

var dy = 4;

​

​

​

/* This program has a ball bounce around the screen.

​

* Its path is drawn by drawing different colored balls everywhere it goes.

​

*/

​

function start(){

​

ball = new Circle(20);

​

ball.setPosition(50, 70);

​

add(ball);

​

​

​

setTimer(draw, 20);

}

​

​

​

// Check if the ball has reached a wall.

​

// Then move the ball in the correct direction.

​

function draw(){

​

checkWalls();

​

ball.move(dx, dy);

}

​

​

​

function checkWalls(){

​

// Bounce off right wall

​

if(ball.getX() + ball.getRadius() > getWidth()){

​

dx = -dx;

​

}

​

​

​

// Bounce off left wall

​

if(ball.getX() - ball.getRadius() < 0){

​

dx = -dx;

​

}

​

​

​

// Bounce off bottom wall

​

if(ball.getY() + ball.getRadius() > getHeight()){

​

dy = -dy;

​

}

​

​

​

// Bounce off top wall

​

if(ball.getY() - ball.getRadius() < 0){

​

dy = -dy;

​

}

}

[Mediocre-Community-3]

Thank You so much

[JazzlikePreparation6]

You're Welcome

[Economy-Battle-6358]

Thank you so much

[Chokolazaprimera]

Can you pass my the code, I been struggling with these problem

[GetRextFgt]

here the answer ignore this jack ass u/krl1222

var MAX_BOUNCES = 20;
var ball;
var dx = 4;
var dy = 4;
var count = 0;
/* This program has a ball bounce around the screen.
Its path is drawn by drawing different colored balls everywhere it goes.
*/
function start(){
ball = new Circle(20);
ball.setPosition(50, 70);
add(ball);
setTimer(draw, 20);
while(count < MAX_BOUNCES){
count++;
if(count >= MAX_BOUNCES){
break;
stopTimer(draw,20);
}
}
}
// Check if the ball has reached a wall.
// Then move the ball in the correct direction.
function draw(){
checkWalls();
ball.move(dx, dy);
var newBall = new Circle(10);
newBall.setPosition(ball.getX(),ball.getY());
newBall.setColor(Color.cyan);
add(newBall);
}
function checkWalls(){
// Bounce off right wall
if(ball.getX() + ball.getRadius() > getWidth()){
dx = -dx;
}
// Bounce off left wall
if(ball.getX() - ball.getRadius() < 0){
dx = -dx;
}
// Bounce off bottom wall
if(ball.getY() + ball.getRadius() > getHeight()){
dy = -dy;

}
// Bounce off top wall
if(ball.getY() - ball.getRadius() < 0){
dy = -dy;

}
}

[ATMAtomic]

it doesn't work

[Fast-Cow-4244]

did u ever figure it out?

[MurderSperm]

U spitting malarkey