RANDOM_WALK_1

//---------------------LIBRARIES

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//---------------------GLOBAL VARIABLES

int particlesSize = 1000;

int particlesSize2 = 100;

color c = color(3,180,255,200); //initil particles (blue)

color c2 = color(255,150,20,200); // seondary particles (orange)

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//---------------------DECLARE OBJECT

ArrayList particles; 

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//---------------------SETUP LOOP

void setup(){

size (1000,400);

smooth();

frameRate(30);

background (0);

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//-------------------INITIALIZE OBJECT

particles = new ArrayList (); //start with empty list

for (int i = 0; i< particlesSize; i ++) {

  Parti myParti = new Parti(random(0,width),random(0,height),c);

  particles.add(myParti);

  }

}

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//---------------------DRAW LOOP

void draw(){

  fill (0,10); // particles fade out

  rect (0,0,width,height);

  for (int i = 0; i < particles.size(); i ++) {

    Parti p = (Parti) particles.get(i);

    p.run();

  }

  if(mousePressed){// add secondary particles

    for (int i = 0; i< particlesSize2; i ++) {

    particles.add(new Parti(random(0,width),random(0,height),c2));

  }

}

}

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//---------------------ADDITIONAL FUNCTION

void keyPressed(){

  saveFrame();

}

​