boolean bSoundEnabled = true; 

class Ball {
  float x, y; // X-coordinate, y-coordinate
  float diameter; // Diameter of the circle
  float speed; // Distance moved each frame
  int direction = 1; // initial direction is down (1 is down, 2 is right, 3 is up, 4 is left)
  int type; //
  boolean ballIsInThePipe;
  boolean ballEnteredPipe;
  boolean ballExitedPipe;
  // boolean sax;
  float lastSoundTriggerTime;


  // Constructor
  Ball(float xpos, float ypos, float dia, float sp, int dir, int ballType) {
    x = xpos;
    y = ypos;
    diameter = dia;
    speed = sp;
    direction = dir;
    type = ballType;
  }

  void reset (float xpos, float ypos, float dia, float sp, int dir, int ballType) {
    x = xpos;
    y = ypos;
    diameter = dia;
    speed = sp;
    direction = dir;
    type = ballType;
  }

  float changeDirTimer;

  void goRight(){
    if (direction != R){
      direction = R;
      changeDirTimer = millis();
    }
  }
  void goDownRight(){
    if (direction != DR){
      direction = DR;
      changeDirTimer = millis();
    }
  }
  void goDownLeft(){
    if (direction != DL){
      direction = DL;
      changeDirTimer = millis();
    }
  }
  void goUpLeft(){
    if (direction != UL){
      direction = UL;
      changeDirTimer = millis();
    }
  }
  void goUpRight(){
    if (direction != UR){
      direction = UR;
      changeDirTimer = millis();
    }
  }
  void goUp(){
    if (direction != U){
      direction = U;
      changeDirTimer = millis();
    }
  }

  void goLeft(){
    if (direction != L){
      direction = L;
      changeDirTimer = millis();
    }
  }

  void goDown(){
    if (direction != D){
      direction = D;
      changeDirTimer = millis();
    }
  }

  void move() {
    if (direction == D){
      y = y + speed;
      x = x;
    }
    if (direction == R){
      x = x + speed;
      y = y;
    }
    if (direction == U){
      y = y - speed;
      x = x;
    }
    if (direction == L){
      x = x - speed;
      y = y;
    }
    if (direction == DR){
      x = x + speed;
      y = y + speed;
    }
    if (direction == UR){
      x = x + speed;
      y = y - speed;
    }
    if (direction == UL){
      x = x - speed;
      y = y - speed;
    }
    if (direction == DL){
      x = x - speed;
      y = y + speed;
    }
  }

  void display() {
    if (ballOnScreen()){
      if(type == RED_BALL){
        fill(255,100,50,240);
      }
      else if(type == GREEN_BALL){
        fill(7,167,166);
      }
      else if(type == PURP_BALL){
        fill(157,2,111);
      }
      strokeWeight(2);
      stroke(255);
      ellipse(x, y, diameter, diameter);
    }
    previousX = x;
    previousY = y;

  }

  boolean pipeIsClose = false;
  float previousX;
  float previousY;

  boolean ballOnScreen(){ 
    if(x >= LEFT_EDGE && x <= RIGHT_EDGE && y >= TOP_EDGE && y < BOTTOM_EDGE){
      return true;
    } 
    else {
      return false;
    }
  }

  boolean ballOnScreen(Ball b){ 
    if(b.x >= LEFT_EDGE && b.x <= RIGHT_EDGE && b.y >= TOP_EDGE && b.y < BOTTOM_EDGE){
      return true;
    } 
    else {
      return false;
    }
  }


  void playZound(){
    if((millis() - lastSoundTriggerTime) > 100){
      if (bSoundEnabled){
        if(type == RED_BALL){
          if(sax == false){
            if(y < (height - (GRID_SPACE * 18))){
              guitar1.trigger();
            }
            if(y >= (height - (GRID_SPACE * 18)) && y < (height - (GRID_SPACE * 14))){
              guitar2.trigger();
            }
            if(y >= (height - (GRID_SPACE * 14)) && y < (height - (GRID_SPACE * 10))){
              guitar3.trigger();
            }
            if(y >= (height - (GRID_SPACE * 10)) && y < (height - (GRID_SPACE * 6))){
              guitar4.trigger();
            }
            if(y >= (height - (GRID_SPACE * 6)) && y < (height - (GRID_SPACE * 2))){
              guitar5.trigger();
            }
          }
          if(sax == true){
            if(y < (height - (GRID_SPACE * 18))){
              sax1.trigger();
            }
            if(y >= (height - (GRID_SPACE * 18)) && y < (height - (GRID_SPACE * 14))){
              sax2.trigger();
            }
            if(y >= (height - (GRID_SPACE * 14)) && y < (height - (GRID_SPACE * 10))){
              sax3.trigger();
            }
            if(y >= (height - (GRID_SPACE * 10)) && y < (height - (GRID_SPACE * 6))){
              sax4.trigger();
            }
            if(y >= (height - (GRID_SPACE * 6)) && y < (height - (GRID_SPACE * 2))){
              sax5.trigger();
            }
          }
        }
        if(type == GREEN_BALL){
          if(bass == false){
            if(y < (height - (GRID_SPACE * 18))){
              organ1.trigger();
            }
            if(y >= (height - (GRID_SPACE * 18)) && y < (height - (GRID_SPACE * 14))){
              organ2.trigger();
            }
            if(y >= (height - (GRID_SPACE * 14)) && y < (height - (GRID_SPACE * 10))){
              organ3.trigger();
            }
            if(y >= (height - (GRID_SPACE * 10)) && y < (height - (GRID_SPACE * 6))){
              organ4.trigger();
            }
            if(y >= (height - (GRID_SPACE * 6)) && y < (height - (GRID_SPACE * 2))){
              organ5.trigger();
            }
          }
          if(bass == true){
            if(y < (height - (GRID_SPACE * 18))){
              bass1.trigger();
            }
            if(y >= (height - (GRID_SPACE * 18)) && y < (height - (GRID_SPACE * 14))){
              bass2.trigger();
            }
            if(y >= (height - (GRID_SPACE * 14)) && y < (height - (GRID_SPACE * 10))){
              bass3.trigger();
            }
            if(y >= (height - (GRID_SPACE * 10)) && y < (height - (GRID_SPACE * 6))){
              bass4.trigger();
            }
            if(y >= (height - (GRID_SPACE * 6)) && y < (height - (GRID_SPACE * 2))){
              bass5.trigger();
            }
          }
        }
        if(type == PURP_BALL){
          if(elektro == false){
            if(y < (height - (GRID_SPACE * 18))){
              drum1.trigger();
            }
            if(y >= (height - (GRID_SPACE * 18)) && y < (height - (GRID_SPACE * 14))){
              drum2.trigger();
            }
            if(y >= (height - (GRID_SPACE * 14)) && y < (height - (GRID_SPACE * 10))){
              drum3.trigger();
            }
            if(y >= (height - (GRID_SPACE * 10)) && y < (height - (GRID_SPACE * 6))){
              drum4.trigger();
            }
            if(y >= (height - (GRID_SPACE * 6)) && y < (height - (GRID_SPACE * 2))){
              drum5.trigger();
            }
          }
          if(elektro == true){
            if(y < (height - (GRID_SPACE * 18))){
              elektro1.trigger();
            }
            if(y >= (height - (GRID_SPACE * 18)) && y < (height - (GRID_SPACE * 14))){
              elektro2.trigger();
            }
            if(y >= (height - (GRID_SPACE * 14)) && y < (height - (GRID_SPACE * 10))){
              elektro3.trigger();
            }
            if(y >= (height - (GRID_SPACE * 10)) && y < (height - (GRID_SPACE * 6))){
              elektro4.trigger();
            }
            if(y >= (height - (GRID_SPACE * 6)) && y < (height - (GRID_SPACE * 2))){
              elektro5.trigger();
            }
          }
        }
      }
      lastSoundTriggerTime = millis();
    }
  }

}