<iframe width='500px' height='400px' src='https://nest.ktbyte.com/nest#330' allowfullscreen></iframe>

float shifty = 0, shiftyspeed = 2, x, y, w=20, h = 20, vx, vy, gravity = 0.3;// the varibles
boolean left, right, up, down, dead = true;
float platdefw = 50, platdefh = 20;// width and the height of the platform
int score = 0, highscore=-1;
float p, u;
class Platform {// class for the platform is your own varible type
  float x, y, w = platdefw, h = platdefh;
  Platform(float x, float y) { 
    this.x = x;  
    this.y = y;
  }
  void display() {//displys the rectangle    
    rect(x, y, w, h);
  }

  //returntype functionname( inputtype inputnname, inputtype inputname)
  boolean collide(float px, float py, float pw, float ph) {
    //abs(-3) is 3. abs stands for absolute value.
    //funcation that 
    return abs(x-px) < (pw + w)/2 && abs(y-py) < (ph+h)/2;
  }
}
ArrayList<Platform> platforms = new ArrayList<Platform>();
class Powerup {
  float p, u;
  Powerup(float p, float u) {
    this.p = p;
    this.u = u;
  }
  void asdf() {
    fill(255, 100, 0);
    strokeWeight(1);
    ellipse(p, u, 40, 40);
  }
}
ArrayList<Powerup> powerups = new ArrayList<Powerup>();
void setup() {
  size(600, 600);
  rectMode(CENTER);
  for (int i = 0; i < 4; i++) {
    p = random(20, 540);
    u = random(20, 540);
    powerups.add(new Powerup(p, u));
  }
}

void draw() {
  if (key=='`') {
    y = 0- shifty;
    vy = 0;
  }
  if (dead) {
    powerups.clear();    //the start screen
    highscore=max(highscore, score);//if score is bigger than highscore, then the score becomes the highscore.
    gravity = 0.3;
    background(0, 0, 255); 
    fill(0);
    textAlign(CENTER); 
    textSize(30);
    text("Click to start", 250, 250);
    if (score>0) {
      text("Previous Score: "+score, 250, 300);
      text("High Score: "+highscore, 250, 350);
    }
    if (mousePressed) {
      score= 0;
     // the powerups are created
      dead = false;
      if (powerups.size()==0) {
        for (int i = 0; i < 4; i++) {
          p = random(20, 540);
          u = random(20, 540);
          powerups.add(new Powerup(p, u));
        }
      }
    }
    //if all powerups are gone, then make new ones, super gravity only exists for 5 seconds
    shiftyspeed=2;
    shifty = y = vx = vy = 0;  
    platforms.clear();
    for (int i = 0; i < 10; i++) {
      x = random(0, width);
      platforms.add(new Platform(x, i*30));
    }
  } else {   //the game screen
    background(255); 
    for (int i = 0; i < powerups.size (); i++) {
      powerups.get(i).asdf();
    }
    fill(0);
    pushMatrix(); 
    translate(0, shifty);   //shift everything down by shifty
    float tallest = height, tallestx = random(0, width);
    for (int i = 0; i < platforms.size (); i++) {  //loop through each platform
      Platform p = platforms.get(i);  //get the platform

      if (tallest > p.y) {  //calculate where the highest platform is
        tallest = p.y;// tallest
        tallestx = p.x;
      }
      p.display();  //draw the platform
      if (p.y > height-shifty) platforms.remove(i--);  //if the platform is off the bottom, remove it
    }
    if (tallest+shifty > 50) {  //if the tallest platform near the top, is 50 from the top
      float newx = tallestx + random(-200, 200); //calculate a random x value that is close to that tallest
      if (newx < 0) newx = 0;
      if (newx > width) newx = width;
      platforms.add(new Platform(newx, -shifty));  //add a new platform
    }
    for (int i = 0; i < powerups.size (); i++) {
      Powerup p = powerups.get(i);
      if (dist(x, shifty+y, p.p, p.u) < 30) {
        powerups.remove(i);
        i--;
        //if you get a powerup, youre score increases by 10 and changes the gravity
        score = score + 10;
        gravity = 0.2;
        int briefCount = 0;
        if (frameRate%60==0) {
          briefCount++;
          if (briefCount >5) {
            gravity = 0.3;
          }
        }
      }
      //if I am touching the powerup
      //      if (p.collide(x, y, w, h)
    }


    //draw our dudes
    fill(255, 0, 0);
    rect(x, y, w, h);
    x+=vx;  //move our dude according to vx, vy
    y+=vy; 
    vy+=gravity;   

    vx = 0; 
    if (left) vx += -5;
    else if (right) vx += 5;
    boolean onPlatform = false;
    for (Platform p : platforms) {  //for every platform
      if (p.collide(x, y, w, h) && y < p.y && vy > 0) { //if you're touching the platform and you're moving down
        vy = 0;
        onPlatform = true;
      }
    }
    if (onPlatform && up) vy = -10;   //you can jump when on a platform

    shifty += shiftyspeed;  //moves everything down
    popMatrix();
    if (y > height- shifty) dead = true; //if you fall off the bottom, you die
    fill(0);
    text("Score: " + score, 100, 400);
    if (frameCount%60==0) {
      score = score + 1;//score
      //      gravity = gravity + 0.005;//how fast the charecter moves down
      shiftyspeed+=0.01;//makes the screen move faster every second
    }
  }
}


void keyPressed() {
  if (key==CODED && keyCode==UP) up = true;
  if (key==CODED && keyCode==DOWN) down = true;
  if (key==CODED && keyCode==LEFT) left = true;
  if (key==CODED && keyCode==RIGHT) right = true;
}
void keyReleased() {
  if (key==CODED && keyCode==UP) up = false;
  if (key==CODED && keyCode==DOWN) down = false;
  if (key==CODED && keyCode==LEFT) left = false;
  if (key==CODED && keyCode==RIGHT) right = false;
}