Problems with random image displaying

niekocaster

hello processing community, i'm new to programming(processing is the first thing i've tried). and I was having some problems with my code. I'm trying to make my background change every few seconds for a brief amount of time, but it just won't work, can you help me out? Thanks in advance :)

PImage bg;
PImage bg2;

void setup() {
framerate(10);
size(720, 720);
bg = loadImage("bg.jpg");
bg2 = loadImage("bg22.jpg");
}
void draw() {
background(bg);
float X = random(60);
if(X == 1) {
background(bg2);
}
}

jeremydouglass

Welcome, @niekocaster .

Please edit your post and format the code: https://forum.processing.org/two/discussion/15473/readme-how-to-format-code-and-text#latest

Try adding a print statement here to see what is happening with X:

float X = random(60);
println(X, 1);
if(X == 1) {
  background(bg2);
}

Is X ever equal to 1? Why not?

benja

random(60) will create a random float between 0 and 60. Try to use println() to see what is going on.

I modified your code a little, maybe that helps to understand why it is very unlikely, that you will ever see that condition become true.

void setup() {}

void draw() {
  float x = random(60);
  println(x);
  if (x == 1) {
    println("condition is true");
  }
}

Lord_of_the_Galaxy

So change the line 4 of benja's code to int x = int(random(60)) and you'll notice the phenomenon becomes a lot more common.