/**
 * Happy Holidays from M1ke + Z0w! 
 * These season inspired forms are fractal curves called Koch Curves. <br>
 * Click the mouse to add more snowflakes. <br>
 * <br>
 * Falling SnowFlakes
 * by Michael Shaub. <br>
 * Lots of programming help from work by Daniel Shiffman
 */

ArrayList flakes;
int flakeWidth = 48;
float rev = 0;
int counter = 0;
int k = 0;
int flip = 0;

KochFractal k1;
KochFractal k2;

void setup() {
  size(800, 400);
  frameRate(30);
  smooth();
  noStroke();
  ellipseMode(CENTER);

  // Create an empty ArrayList
  flakes = new ArrayList();
  
  //Create the SnowFlake
  k1 = new KochFractal(0, 0, 150);
  k2 = new KochFractal(0, 0, 150);
  
  // Start by adding one element
  flakes.add(new Flake(width/2, height/3, flakeWidth, 1));
}

void draw() {
  background(41, 52, 97);

  // With an array, we say flakes.length, with an ArrayList, we say flakes.size()
  // The length of an ArrayList is dynamic
  // Notice how we are looping through the ArrayList backwards
  // This is because we are deleting elements from the list  
  for (int i = flakes.size()-1; i >= 0; i--) { 
    // An ArrayList doesn't know what it is storing so we have to cast the object coming out
    Flake flake = (Flake) flakes.get(i);
    flake.move();
    flake.display();
    if (flake.finished()) {
      // Items can be deleted with remove()
      flakes.remove(i);
    } 
  }  
  
  //Make a new flake every second
  if (counter < 120) { //count up to 1 sec
    counter++; //increment the counter in half seconds
    }else{
      counter = 0; //resets the counter
      // A new flake object is added to the ArrayList (by default to the end)
     rev = random(-10,10); //spin direction rrandomizer
     flakes.add(new Flake(random(0,width), random(0,height), flakeWidth, rev)); //could add spin dir here
    }
    
    //Draw mouse pointer flake
    //strokeWeight(3); //hevier stoke weight for scaled down flake
    if (mouseX > 3 && mouseY > 3 && mouseX < width-3 && mouseY < height-3){
      //Pulsing Circle at Cursor
      /*
      if (flip > 0) {
      fill(193,201,235,k*5);
      }else{
        fill(193,201,235,(30-k)*5);
      }
      noStroke();
      ellipse(mouseX, mouseY, 18, 18);
      stroke(193,201,235,255);
      */
    pushMatrix(); //save regular location of the origin point (0,0)
    translate(mouseX,mouseY); //move (0,0) to new place
    rotate(radians(k*2)); //spins the flakes counterclockwise
    scale(.2); //scales coordinates to scale the flake
    stroke(193,201,235,255); //sets color to light blue
    // Draws the snowflake!
    pushMatrix(); //save rotation
    for(int i = 0; i < 3; i++) {
      k2.render(); //draw 1 side
      rotate(2*PI/3); //rotate x,y around origin 120degrees
    }
    popMatrix(); //restore regular rotation of x,y
    popMatrix(); //restore regular location of the origin point (0,0)
    //strokeWeight(1); //normal stroke weight
    
    //Grow the Crystal
    if (k < 30) { //count up to 1/2 sec
    k++; //increment the counter in half seconds
    }else{
      k = 0; //resets the counter
      if (flip > 0) {
        flip = 0;
      }else{
        flip = 1;
      }
      if (k2.getCount() < 3) {
      // Iterate
      k2.nextLevel();
      }else{
      k = 0; //resets the counter
      k2.restart();
      }
    }
  }
}

void mousePressed() {
  // A new flake object is added to the ArrayList (by default to the end)
  rev = random(-10,10);
  flakes.add(new Flake(mouseX, mouseY, flakeWidth, rev)); //could add spin dir here
  counter = 0; //resets the counter
  
}