mousePressed not working - simple code

tder133

Hi! I'm new to both coding and the boards so please bear with me. I'm trying to make a simple code where circles, which are supposed to represent tear drops, fall and the person controlling the mouse cursor, which takes on the image of a bucket, clicks on the tears to make them disappear, to make the illusion of tears falling into the bucket.

I'm having trouble with the mousePressed command. I cannot seem to be able to make the falling circles disappear when clicked on. Does anyone have any suggestions to help get me on the right track?

Here is what I have:

Tear t1; PImage mouseCursor; int numDrops = 80; Tear[] drops = new Tear[numDrops]; // This creates the array of tears - how many will be able to fall. void setup() { size(1000,800); background(0); smooth(); noStroke(); // This loops the array of tears. for (int i = 0; i < drops.length; i++) { drops[i] = new Tear(); // This creates the tears as objects. t1 = new Tear(); } mouseCursor = loadImage("bucket.png"); // This loads the image of the bucket as the cursor. } void draw(){ fill(0,80); rect(0,0,1000,800); // This loops the array of tears. for (int i = 0; i < drops.length; i++) { drops[i].fall(); } if(mouseX < 1000) { // This command makes the cursor the bucket image at all times. cursor(mouseCursor, 0, 0); } else { cursor(HAND); } } class Tear { // This allows the tears to be able to fall randomly at random positions on the screen. float t = random(1000); float y = random(-height); void fall() { y = y + 10; fill(0,139,211,255); // The tears themselves. :'( ellipse(t, y, 10, 10); if(y>height){ t = random(1000); y = random(-200); } } void mousePressed(){ ;if (mouseX >= t && mouseX <= t + width && mouseY >= y && mouseY <= y+ height){ fill(0); } else { fill(0,139,211,255);}} }

Thanks!

koogs

Please highlight the code properly.

Use ctrl-t in the processing editor to indent it. Then cut it, paste it into a message, highlight it and press ctrl-o

koogs

Without that we can't tell whether your mousePressed is within the Tear class or outside it. It should be outside.

tder133

Sorry!

Tear t1;
PImage mouseCursor;

int numDrops = 80;
Tear[] drops = new Tear[numDrops]; // This creates the array of tears - how many will be able to fall.

void setup() {
  size(1000,800);
  background(0);
  smooth();
  noStroke(); // This loops the array of tears.
  for (int i = 0; i < drops.length; i++) {

    drops[i] = new Tear(); // This creates the tears as objects.
    t1 = new Tear();
  }

  mouseCursor = loadImage("bucket.png"); // This loads the image of the bucket as the cursor.
}

void draw(){
  fill(0,80);
  rect(0,0,1000,800); // This loops the array of tears.
  for (int i = 0; i < drops.length; i++) {
    drops[i].fall();
  }

  if(mouseX < 1000) { // This command makes the cursor the bucket image at all times.
    cursor(mouseCursor, 0, 0);
  } else {
    cursor(HAND);
  }
}

class Tear { // This allows the tears to be able to fall randomly at random positions on the screen.
  float t = random(1000);
  float y = random(-height);

  void fall() {
    y = y + 10;
    fill(0,139,211,255); // The tears themselves. ;_;
    ellipse(t, y, 10, 10);


   if(y>height){
   t = random(1000);
   y = random(-200);
   }
  }

  void mousePressed(){
   ;if (mouseX >= t && mouseX <= t + width && 
   mouseY >= y && mouseY <= y+ height){
    fill(0);
  } else {
    fill(0,139,211,255);}}

}

GoToLoop

Callback mousePressed() belongs to PApplet top sketch.
It doesn't work inside our own custom classes, unless we registerMethod() it. :-@

tder133

Does that mean I have to place the mousePressed command somewhere else? Or do I have to add extra code?

I am an inexperienced coder, so I do not know much. I'm very sorry!

GoToLoop

• Like I said before, you've mostly got 2 options: a standard 1 and an advanced 1. :(|)
• Processing API offers a buncha callback functions, like setup(), draw(), keyPressed(), etc.
• They're all invoked automatically by the sketch at their right triggered moment.
• And they all belong to the API's main class PApplet.
• However, your own mousePressed() method there belongs to class Tear instead. #-o
• Thus the sketch can't find it unless it's registered by undocumented function registerMethod(). ~:>
• The standard approach is to simply invoke your own mousePressed() method for each of its instances inside sketch's mousePressed() callback: *-:)

https://Processing.org/reference/mousePressed_.html
https://Processing.org/reference/for.html

void mousePressed() {
  for (final Tear tear : drops)  tear.mousePressed();
}