function setup(){

    var width = windowWidth;

    var height = windowHeight;

    createCanvas(width, height);

    p = new particle();

    n = new netForce();

    //particles.push(p);

​

}

function mouseClicked(){

    p = new particle(); // when user clicks a new particle is formed

    particles.push(p); // particle is added to the array

 }

function draw(){

    background(200);

    for(i=0;i<particles.length;i++){

    particles[i].main();

    n.dir(particles[i]);

    }

​

​

}

​

function particle(){

    this.maxvelocity =5;     ///

    this.maxforce = 0.5;     //

    this.velocity = createVector(0,0);

    this.location = createVector(random(width),random(height)); // random initial location for each object

    this.targetMouse = 1;  //1 = yes 0 = no(no results in mutual attraction which is borked)

    this.target = createVector();

    this.dir = createVector();

    this.origin = createVector(0,0);

    this.acceleration = createVector(0,0);

    this.display = function(){  // To display the object 

        circle(this.location.x,this.location.y,100);

    }

​

   this.acquireDir = function(direction){ // acquires the direction to the target

​

            this.dir = direction.sub(this.location);

            this.dir.normalize();    

            this.addForce(this.dir); // Pass the direction vector to be added to the acceleration

        }

​

   this.motion = function(){  // this function is responsible for providing the force

        this.velocity.add(this.acceleration);

        this.velocity.limit(this.maxvelocity);

        this.acceleration.mult(0);

    }

​

    this.addForce = function(force){

        this.acceleration.add(force);

    }

​

    this.update = function(){  // updates the location of the object

        this.location.add(this.velocity);

    }

    this.main = function(){   

        this.display();

        this.motion();

        this.update();

    }

}

function netForce(){

    this.dir = function(){

        if(particles[i].targetMouse == true){   // This if statement works as expectec

            //particles[i].target = createVector(mouseX,mouseY);

            this.mouse = createVector(mouseX,mouseY); // The target is the mouse only if targetMouse =1

            //particles[i].acquireDir(this.mouse);

            particles[i].target = this.mouse;

            particles[i].acquireDir(particles[i].target);

        }

​

        if(particles[i].targetMouse == false){  //  Mutual repulsion  // this doesn't work

             for(j=0;j<particles.length;j++){

                if(i!=j){

                particles[i].acquireDir(particles[j].location);

             }

            }

        }

    }

    }