class Ball
{

 
float wWidth;
float wHeight;
 float bSize;

  float x, y;
float xDirection, yDirection;
color a;
  
  Ball(color bodya, float windowWidth, float windowHeight, float ballSize)
  {
    wWidth = windowWidth;
    wHeight = windowHeight;
    bSize = ballSize;
    x =1;
    y = 1;
    xDirection = 1;
    yDirection = 1;
    a=bodya;
  }


  Ball(color a, float windowWidth, float windowHeight, float ballSize,float xPosition, float yPosition,float xDir,float yDir)
  {
    this(a,windowWidth, windowHeight, ballSize);
    x = xPosition+random(100);
    y = yPosition+random(100);
    xDirection = xDir;
    yDirection = yDir;
    
    
  }
  

  void compute()
  {
    if (x < wWidth+100 && x > -100)
    {
      // Move along x axis
      x =x+ xDirection;
    }
    else
    {
      //direction
      xDirection = xDirection * -1;
      x =x+ xDirection;
    }
    
    if (y < wHeight+100 && y > -100)
    {
      y =y+ yDirection+random(3);    
    }
    else
    {
      yDirection = yDirection * -1;
      y =y+ yDirection;
    }

  
  }
  
 
  void display()
  {
    compute();  
    fill(a);
    ellipseMode(CENTER);
    ellipse(x,y,bSize*2.5,bSize);   

    
    
    /////////////eye & tail, change direction
    if (xDirection > 0 && yDirection > 0)
    {
     fill(255);
    ellipse(x+4,y,2,2);
     fill(0);
    ellipse(x+5,y,2,2);
     fill(a);
    triangle(x,y,x-17,y-5,x-17,y+5);
    }
  else if (xDirection > 0 && yDirection < 0)
    {
      fill(255);
    ellipse(x+4,y,2,2);
     fill(0);
    ellipse(x+5,y,2,2);
     fill(a);
    triangle(x,y,x-17,y-5,x-17,y+5);
    }
    
   else if (yDirection  > 0 && xDirection < 0)
    {
     fill(255);
    ellipse(x-4,y,2,2);
     fill(0);
    ellipse(x-5,y,2,2);
     fill(a);
    triangle(x,y,x+17,y-5,x+17,y+5);
    }
   else if (xDirection < 0 && yDirection < 0)
    {
      fill(255);
    ellipse(x-5,y,4,4);
     fill(0);
    ellipse(x-5,y,2,2);
    fill(a);
    triangle(x,y,x+17,y-5,x+17,y+5);
    }
   
  }

}