Modify a text file: $/Background_Change.pde

$/Background_Change.pde

//Background  
// George Marmol

float sunX, sunY;        // Position of sun
float x, y;              // Position and speed of creature.
float dx, dy;

//// SETUP:  Define screen size, set modes.
void setup()
{
  size( 600, 400 );
  reset();
}
void reset() {
  sunX=  width/2;         // Start the sun half-way across the screen.
  sunY=  50;
  x=  width/2;            // Start person in center.
  y=  height/2;
  dx=  random( 2,5 );     // Random speed.
  dy=  random( -2, +2 );
}

//// DRAW:  sky & sun plus creature
void draw()
{
  scene();
  show();
}

//// SCENE:  sky, sun, house.
void scene() {
  background( 255, 255, 255 );          // Blue sky
  fill( 255, 255, 0 );
  ellipse( sunX, sunY, 30, 30 );        // Yellow sun
  fill( 200, 159, 235 );
  rect( 100,100, 100,80 );              // Red house
  triangle( 100,100, 200,100, 150,50 );
}

//// ACTION:  sun moves (then resets to random height)

//// SHOW:  Person follows mouse
void show() {
  // Draw creature.
  fill( 140, 110, 200 );
  rect( x,y, 50, 80 );                 // Blue creature
  ellipse( x+25, y-20, 40, 40 );       // Head on top
  // Eyes.
  fill( 255 );
  ellipse( x+15, y-25, 12, 12 );
  ellipse( x+35, y-25, 12, 12 );
  fill( 0, 150, 0 );
  ellipse( x+15, y-25, 4, 4 );
  ellipse( x+35, y-25, 4, 4 );
}

//// EVENT HANDLERS ////
void mousePressed() {
  reset();
  // Set the position (x,y)
  x=  mouseX;
  y=  mouseY;
}
void keyPressed() {
  if (key == 'q') {
    exit();
  }
  if (key == 'r') {
    reset();
  }
  if (key == 's') {
    sunY=  sunY + 50;
  }
  if(key=='v'){
   background(0,0,0);}
}
///