float left = 100, right = 500;
float center = ( left + right )/2;
float georgeX = 300, georgeY = 30, georgeDX=3, georgeDY=2;


void setup() {
  size ( 420, 300 );
}

void draw() {
  ////next frame 
  scene();
  player();
}


void scene() {
  background ( 150 );
}


void player() {
  //// move and draw George
  if ( georgeX > right || georgeX < left ) {
    georgeDX = -georgeDX;
  georgeX += georgeX + georgeDX;
  georgeY += georgeDY;
  // Display
  georgeShow ( georgeX, georgeY ); 
  }
}


void  georgeShow( float X, float Y ) {
  ////show g on screen
  fill (0);
  rect ( X, Y, 50, 80 );
  fill (255);
  ellipse( 15, Y-40-15, 15, 15 );
}