cycle multiple images + single mouse press

DanielJay

So I have a switch/case that is cycling through 3 images within the same coordinates when the mouse is pressed. My issue is that as soon as the condition in case 1 is met (mouse tapped), the switch/case cycles through all the cases until the last one. Here is my code below:

int counter_channels =1;


switch(counter_channels) {

    case 1:


      channelOne.display(0, 0);


        if (mouseX > displayWidth/1.2-channelOne.getWidth() && mouseX < displayWidth/1.2+channelOne.getWidth() && 
          mouseY > displayHeight/1.55-channelOne.getHeight() && mouseY < displayHeight/1.55+channelOne.getHeight()) {


 counter_channels++;


}

      break;

    case 2:


      channelTwo.display(0, 0);


        if (mouseX > displayWidth/1.2-channelTwo.getWidth() && mouseX < displayWidth/1.2+channelTwo.getWidth() && 
          mouseY > displayHeight/1.55-channelTwo.getHeight() && mouseY < displayHeight/1.55+channelTwo.getHeight() ) {


          counter_channels++;


      }




      break;


    case 3:
      int xposTV= 171;
      int yposTV = 150;



      fill(127);
      rect(0, 0, xposTV, yposTV);


    }

PhiLho

Let me guess: you call this code from draw(), not from mousePressed(), right?

DanielJay

eek. I didn't realize that this needed to be nested in the function mousePressed. Unless my response is premature...

PhiLho

If you check this in draw(), this is checked 60 times per second (the default framerate), and a click is usually longer, so it spawns over several frames, hence the cycling you see.

mousePressed() is called only once per click.

Lot of people make this mistake, hence my guess...

PhiLho

And since you are not the first one to make this mistake, it inspired me to a new Technical FAQ entry: http://wiki.processing.org/w/Why_is_my_mouse_pressed_code_executed_several_times?

DanielJay

Much appreciated!