Objects staying together

mmeatboy

Hey guys. So I created objects that move randomly around. I noticed that when they collide, they "become one" and move together on the same path. Any idea why this is happening? Or is it just coincidence?

//sketch.js
var count = 50;
var org = [];
function setup() {
    createCanvas(500,500);
    for(var i = 0; i < count; i++){
        org[i] = new Organism();
    }
}

function draw() {
    background(255);
    for(var i = 0; i < org.length; i++){
        org[i].move();
        org[i].display();
    }
}

function Organism(){
    this.size = random(15, 30);
    this.x = random(0, 500);
    this.y = random(0, 500);

    this.move = function(){
        this.x += (noise(this.x*0.034, this.y*0.034, frameCount*.021) - .5) * 15;
        this.y += (noise(frameCount*.021, this.x*0.034, this.y*0.034) - .5) * 15;
    };

    this.display = function(){
        ellipse(this.x, this.y, this.size, this.size);
    };
}

jeremydouglass

Perhaps see this recent related discussion of problems with collision detection: https://forum.processing.org/two/discussion/20944/simple-rect-collision-from-array#latest

Edit: I haven't tested it, but actually it looks like your Organism.move() function might be deterministic based on location...? So two objects in the same place would always move in the same way.

koogs

Yes, read up about noise(). it is not random.

There is no collision detection on your code so it can't be that.