String title = " Project 9";
String author = "Andrew Urrutia";
float tableColor;

Ball greenBall, blueBall, redBall;


void setup() {
  size(600, 500);
  greenBall= new Ball(0, 255, 0);
  blueBall= new Ball(0, 0, 200);
  redBall= new Ball(255, 0, 0);
begin();
}

void begin() { // changing ball speed
  greenBall.diffrence();
  blueBall.diffrence();
  redBall.diffrence();
}

void draw() {
  background(155,130,225); // background color
  drawTable();
  drawBalls();
  moveBalls();
  button(25, 150, 25, 30);
 text( title, width/4, 20 );
  text( author, 20, height-20 );
}

void drawTable() {

  fill(tableColor); // black 
  stroke(150, 75, 100); 
  strokeWeight(50);
  rect(100, 55, 350, 355); //table
}

void drawBalls() {
  greenBall.show();
  blueBall.show();
  redBall.show();
}

void moveBalls() {
  greenBall.move();
  blueBall.move();
  redBall.move();
}






class Ball {
  color c;
  float x=150, y=300;    // Placement of ball
  float dx=4, dy=4;  // speed

  // constructors 

  Ball( float x0, float y0 ) {
    x= x0;
    y= y0;
  }
  Ball( int r, int g, int b ) {
    //different colors
    c=  color( r, g, b );
  }

  Ball ( ) {
  }

  void move() {
    //// Move ball and keep on table
    x=  x + dx;
    y=  y + dy;
    //traps ball on table
    if (x < width-430) {  
      dx=  -dx;    
      x=  x + dx;
    }
    if (x > width-150) {  
      dx=  -dx;    
      x=  x + dx;
    }
    if (y < 75) {  
      dy=  -dy;    
      y=  y + dy;
    }
    if (y > 325) {  
      dy=  -dy;    
      y=  y + dy;
    }
  }

  void show() {
    //// Draw at (x,y)
    fill(c);
    noStroke();
    ellipseMode(CENTER);
    ellipse(x, y, 40, 40);        // size of the balls //
  }

  void diffrence() {
    x=  100 + random(200);
    y=  100 + random(150);
    dx=  1 + random(4);
    dy=  1 + random(2);
  }
}
// different interactives 

void button( float x, float y, float w, float h) {

  fill(5);
  rect(30, 155, 25, 25);
  if (mousePressed) {
    if (mouseX>x && mouseX <x+w && mouseY>y && mouseY <y+h) {
      println("table color changed");   // gray //
      fill(200);
      tableColor = 200;
    }
  }
}



void keyPressed() {
 
  if ( key == 'G') {
    greenBall.x = 90;
    greenBall.y = 160;
  }


  if ( key == 'B') {
    blueBall.x = 100;
    blueBall.y = 120;
  }


  if ( key == 'R') {
    redBall.x = 85;
    redBall.y = 155;
  }

}