/* built with Studio Sketchpad: 
 *   https://sketchpad.cc
 * 
 * observe the evolution of this sketch: 
 *   https://cst1101.sketchpad.cc/sp/pad/view/ro.qEP4znegYGv/rev.64
 * 
 * authors: 
 *   Kathia Garcia

 * license (unless otherwise specified): 
 *   creative commons attribution-share alike 3.0 license.
 *   https://creativecommons.org/licenses/by-sa/3.0/ 
 */ 



// press 'S' or 's' to stop snow
// mousepressed for black background

/* @pjs preload="/static/uploaded_resources/p.3301/snowyNight.jpg"; */
  PImage snowyNight= loadImage("/static/uploaded_resources/p.3301/snowyNight.jpg");

Snow [] lot; // array called lot of "Snow"

void setup() {

  lot = new Snow[300]; // makes space for 300 
  size(600, 600);
  for (int i = 0; i < lot.length; i++) {
    lot[i] = new Snow(color(255), random(0, width), i*2, i/150.0, 5);
  }
}

void draw() {
  image(snowyNight, 0, 0, 600, 600);
  fill(255);
  for (int i = 0; i < lot.length; i++) {
    lot[i].display();
    lot[i].snowing();
  }
}



//------------------------- SNOW CLASS ----------------------------

class Snow {
  color snowColor; // data
  float snowX;
  float snowY;
  float snowSpeed;
  int snowSize;

  Snow(color snowColor_, float snowX_, float snowY_, float snowSpeed_, int snowSize_) { // constructor
    snowColor = snowColor_;
    snowX = snowX_;
    snowY = snowY_;
    snowSpeed = snowSpeed_;
    snowSize = snowSize_;
  }

  void snowing() { //  snow moving
    snowY = snowY + snowSpeed;
    if (snowY > height) {

      snowY = 0;
    }
    if
      (key == 'S' || key == 's' ) { //stops snowing
      snowY = snowY - snowSpeed;
    }
  }

  void display() { // defines the snow


    if (mousePressed) {
      background(0);
    }
    else {// shows
      fill(snowColor);
      stroke(255);
      ellipse(snowX, snowY, snowSize, snowSize);
    }
  }
}