Modify a text file: $/xMAQp1.pde

$/xMAQp1.pde

//// moon moves across the sky

float x,y;              // Position of moon.
float moonX, moonY;

//// SETUP:  Define screen size, set modes.
void setup() {
   size( 500, 300 );

// RESET:  // Start the moon half-way across the screen.
            moonX=  width/2;
            moonY=  50;

}

//// DRAW:  sky & moon & tree
void draw() {
    // SCENE:  sky, moon, house.
    background( 0, 0, 0 );
    fill( 150, 150, 150 );
    ellipse( moonX, moonY, 60,60 );                 
    fill( 0, 255, 0 );
    rect( 100,100, 100,50 );
    rect( 130,50, 15,40);
    triangle( 100,100, 200,100, 170,60 );
    fill( 255, 0, 0);
    rect( 110,110, 30,40);
    fill( 100, 50, 0);
    rect( 295, 90, 10,60);
    fill( 200, 300, 0);
    ellipse( 300,100, 50,50);
    
           
// ACTION:  moon crosses sky, reset to right side.
    if (moonX > width) {
      moonX=  1;
    }
      moonX=  moonX + 2;

// MESSAGES.
            fill(0);
            text( "moon moves across the sky.", width/4, 30 );
            // Also display the author and file name.
            text( "M.A.Quijano / dynamic1.java", 10, height-10 );
}