homework week 4 question

homework 4

global circleX, direction
circleX = 500
direction = 8

global circletwoX, directiontwo
circletwoX = 450
directiontwo = 3

global circlethreeX, directionthree
circlethreeX = 550
directionthree = 6


def setup():
    size (600, 600)
    noStroke
    
def draw():
    global circleX, direction
    background(255, 255, 255)
    img = loadImage("cat-raster-image.png")
    image(img, 0, 0, 600, 600)
    fill(165, 131, 98)
    ellipse(circleX, 500, 50, 50)
    circleX = circleX + direction
    if circleX > 500:
        direction = -15
    if circleX < 120:
        direction = 15
        
    global circletwoX, directiontwo
    fill(252, 222, 240)
    ellipse(circletwoX, 450, 60, 60)
    circletwoX = circletwoX + directiontwo
    if circletwoX > 520:
        directiontwo = -10
    if circletwoX < 150:
        directiontwo = 10
        
    fill(236, 214, 255)
    circle(335, 350, 35)
    
 if mousePressed:
        global circlethreeX, directionthree
        fill(176, 211, 252)
        ellipse(circlethreeX, 550, 40, 40)
        circlethreeX = circlethreeX + directionthree
        if circlethreeX > 600:
            directionthree = -10
        if circlethreeX < 0:
            directionthree = 10

Nice work so far. Remember what I was saying in class about using loadImage() in Processing's "active" mode?

You should move line 21 into def setup(), make img global in both setup() and draw(). I think that will probably fix your problem but if not we can debug it further from there.

If you want to see some code snippets illustrating what I mean have a look at the "Review" section in the Week 4 class notes.

Also, probably unrelated but line 43 needs to be indented by 4 spaces to align with the preceding lines. I'm actually surprised that this doesn't give an error.

Good luck and let me know if this works.

Also line 16 is missing the parenthesis (). It should look like this:

    noStroke()

I'm also surprised this did not generate an error.

Hello,
All those corrections worked; thank you! @rors