//// _29cst112/x0d
//// bam:2022/6/7
String title  =  "My first sketch - animated";
String subtitle  =  "animation:  bounce off walls; sun arcs thru sky";
String help   =  "Click repositions; r to reset; q to quit";
String author =  "Your Name";

float bamX, bamY, bamDX, bamDY;
float sunX, sunY, sunDX=1;
float horizon;

//////// SETUP ////////
void setup() {
  size( 600, 400 ); 
  horizon = height/4;
  reset();
}
void reset() {
  bamX=100;    bamY=100;
  bamDX=3;     bamDY=2;
  sunX = 20;   sunY = height/8;
}

//////// DRAW NEXT FRAME ////////
void draw() {
  scene();
  credits();
  cast();
  action();
}
void scene() {
  background(200,255,255);       // sky
  fill(255,255,0);
  ellipse( sunX, sunY, 40, 40 );          // sun
  fill(200,255,200);
  rect( 0,horizon, width,height*3/4 );    // grass
}
void credits() {
  fill(0);
  textSize(20);
  text( title, 20, 15 );
  textSize(12);
  text( subtitle, 20, 25 );
  text( help, 20, 35 );
  text( author, 10, height-10 );
  fill(0,0,255);
  text( help, width/2, 15 );
}
void cast() {
  fill( 255,200,200 );
  ellipse( bamX,bamY, 20,30 );        // head
  fill(255,0,255);
  triangle( bamX-15,bamY-10, 
            bamX+15,bamY-10, 
            bamX,bamY-25);            // hat

  fill( 0,255,255 );
  rect( bamX-20, bamY+15, 40, 60);    // body
  fill(0,0,255);
  text( "bam", bamX-15, bamY+32 );
}
void action() {
  if (sunX > width-20) sunX = 20;
  sunX = sunX + sunDX;
  sunY = horizon * ( 1 - sin(PI * sunX/width) );
  //    
  bamX = bamX + bamDX;
  bamY = bamY + bamDY;
}

void mousePressed() {
  bamX = mouseX;
    bamY = mouseY;
} 
void keyPressed() {
  if (key == 'q') exit();
  if (key == 'r') reset();
}