//// GLOBAL DATA ////  Will Johnson Project 1
int birdX=100, birdY=100;  
int birdDX=10;
int sunX=100, sunY=100;  
int guyX=100, guyY=300, guyDX=10, guyDY=5;
int dogX=100, dogY=200;
float bombX=0, bombY=0, bombDY=0;              
float gravity=  0.5 * 9.81 / frameRate;

boolean eastbound=true;

int speed;



void setup() {
  size( 800, 600 );
  smooth();  
  //--  frameRate(5);
  speed=  (int) frameRate;
}

void draw() {
  //// Move and show everything //
  scene();
  guy();
  dog();
  bird();
}

void scene() {
  //// Sky, sun, grass.
  background( 150, 200, 255 );    // Sky

  //// Move the sun.
  sunX = (sunX+1) % width;
  float  xw=  (float) sunX / width;
  sunY =  (int) ( 150 - 100*sin( PI*xw )   );
  
  float  arc=  (float) sin( PI * sunX / width );
  sunY =  (int) ( 150 - 100*arc );
  
  //--  text( "@@@ sun:  "+sunX+","+sunY, sunX, sunY+50 );
  //--  text( "@@@ xw:  "+xw, sunX, sunY+70 );
  float  sinyy=  sin( PI*( xw ) );
  //--  text( "@@@ sin(PI*x/w):  "+sinyy, sunX, sunY+90 );

  //// Draw the sun.
  fill( 255, 254, 1 );        // Sun
  ellipse( sunX, sunY, 40, 40 );

  //// Grass
  fill( 100, 255, 100 );
  rectMode( CORNERS);
  rect( 0, height/3, width, height );
  
  fill( 0 );
  text( "Will Johnson CST 112 Project 1", 50, height-20 );
  text( "Click for drop.", width-100, 50 );

}

void guy() {
  //// Guy follows mouse.
  //--  guyX=mouseX; guyY=mouseY;
  
  guyX=  guyX + guyDX;
  guyY=  guyY + guyDY;
  
  fill( 0,255,0 );        // Green shirt
  rectMode( CENTER );
  rect( guyX, guyY, 60, 80 );
  fill(255,0,0);
  rect(guyX+10, guyY+60, 25,35);
  rect(guyX-20, guyY+60, 25,35);
  rectMode( CENTER);
  fill( 0, 200, 200 );        // Cyan face
  ellipseMode( CENTER );
  ellipse( guyX, guyY-40-15, 30,30 );

  //// Eye.
  fill(255,255,255);
  if (eastbound) {
      ellipse( guyX+10, guyY-40-20, 5,5 );
  } else {
      ellipse( guyX-10, guyY-40-20, 5,5 );
  }
}

void dog() {
  if (pmouseX < dogX) eastbound=true;
  else if (dogX > dogX) eastbound=false;
  else {}    // No change if =
  fill( 250, 150, 150 );
  rectMode( CORNER );
  
  //// Dog chases guy.
  //dog is on the right
  if ( ! eastbound){
    int dogX=guyDX-50;
    int dogY=guyDY+100;
    dogX = dogX + 5*( dogX-dogX );
    dogY = dogY + 2*( dogY-dogY );
    rect( dogX+80, dogY, 40, 20 );
    rect( dogX+70, dogY-10, 20, 10 );
    rect(dogX+110,dogY+20,10,5);
    rect(dogX+90,dogY+20,10,5);
  }  
  //dog is on the left
  else {
    int dogX=guyDX-70;
    int dogY=guyY+100;
    dogX = dogX + 5*( guyDX-guyX );
    dogY = dogY + 2*( guyDY-guyY );
    rect( dogX, dogY, 40, 20 );
    rect( dogX+30, dogY-10, 20, 10 );
    rect(dogX+30,dogY+20,10,5);
    rect(dogX+10,dogY+20,10,5);
  }

}

void bird() {
  //// Bird flies across screen.  (Press key to drop)
  birdX = birdX + birdDX;
  birdX = birdX % width;
  birdY = birdY + 10 - (int) random( 20 );
  fill( 200, 100, 200, 150 );
  triangle( birdX,birdY, birdX-50,birdY-15, birdX-50,birdY+15 );
  if (birdY >150){
    birdY = birdY - 5;
  }
  else if (birdY <-200){
    birdY= birdY - 10;
  }
  //// bomb is falling from bird.
  if (bombX > 0) {
    bombX=  birdX - 5;
    bombDY=  bombDY + gravity;
    bombY += bombDY;
    if (bombY > height) {
      //// Bomb vanishes at bottom
      background(255);
    }
    fill(150,100,100 );
    ellipseMode( CENTER );
    triangle( bombX-12,bombY-15, bombX+12,bombY-15, bombX,bombY+15 );  // Fins
    fill( 70, 0, 70 );
    ellipse( bombX, bombY, 16, 30 );    
  }
}
void bomb() {
  //// Bomb falls with gravity.  No bomb if zero.
}
void mousePressed() {
  //// Drop bomb, when mouse is pressed.
  bombX = birdX;
  bombY = birdY;
  bombDY= 0;
  background(0);
}

void keyPressed() {
  if (key == 's') {
    speed -= 5;
    if (speed<1) speed= 30;
    frameRate( speed );
  }
}