// Project # 1 & 2 & 3 //
// Stacy Aparicio, CST 112, May 8 2015 //

float kayX, kayY;
float booX, booY;
float horizon, sunX, sunY;
float treeX = 5; 
float treeY = horizon -40;
float space = 75;
float houseX, houseY;
int step;
float bird1X, bird1Y=20;
float bird2X, bird2Y=40;
float bird3X, bird3Y=10;
float bird4X, bird4Y=15;


void setup() {
// Setup: window size //
  size( 650, 650 );
  horizon= ( height /3 );
}

void draw() {
  scene();
  sun();
  tree();
  house();
  boo();
  kay();
  birds();
  keyPressed();
}

void scene() {
// light blue sky //
  background( 0, 180, 255 );
// green grass //
  fill( 0, 155, 0 );
  rectMode(CORNER);
  rect( 0, horizon + 0, width, height *4 );
// title, name, etc //
  fill( 0 );
  textSize( 20 );
  text( "boo follows kay", width/3, 20 );
  textSize( 12 );
  text( "Stacy Aparicio, CST 112, 2015 May 8", 20, height -20 );
}

void sun() {
// sun moves slowly to the right //
  sunX= sunX +2 ;
  sunX= sunX % width ;
  sunY= horizon -200 * sin( PI * sunX/width );  
// rise & set //
  fill( 255, 200, 0 );
  ellipse( sunX, sunY, 80, 80 );
  fill( 0 );
}

void tree () {
// Draw trees going across //
  treeX = -20;
  while ( treeX < width ) {
  fill( 150, 55, 0 ); 
// brown tree trunk //
  rectMode( CENTER );
  rect( treeX, horizon -45 , 25 , 90 );
  fill( 0, 155, 0 );     
// Leaves are green //
  ellipse( treeX, treeY +145 , 63 , 85 );
  treeX += 65 ;
  }
}

void house() {
// House //
  float houseX, houseY ;
  houseX = width *9.2/11 ;
  houseY = horizon -60;
  fill( 0, 0, 255 );
  noStroke();
  rectMode( CORNER );
  rect( houseX, houseY, 100, 60 );
  triangle( houseX, houseY, houseX +100, houseY, houseX +52, houseY -25 );
  stroke( 0 );
// Windows & door //
  fill( 0 );
  rect( houseX +5 , horizon -50 , 25 , 20 );
  rect( houseX +65 , horizon -50 , 25 , 20 );
  rect( houseX +38 , horizon -30 , 20 , 30 );
}

void boo() {
// boo followed by kay // color navy // HERO //
  booX = booX + (kayX - booX)/100;
  booY = booY + (kayY - booY)/100;
  rectMode(CORNER);
// Monster head //
  fill( 255 , 255 , 255 );
  ellipse( kayX +15 , kayY , 45 , 50 );
// Monster body //
  fill( 0 , 23 , 145 );
  rect( kayX, kayY +20 , 30 , 60 );
}

void kay() {
// kay follows boo // color purple // // MONSTER //
  kayX = kayX + (mouseX - booX)/80;
  kayY = kayY + (mouseY - booY)/80;
  rectMode(CORNER);
// Creature head //
  fill( 0 , 0 , 0 );
  rect( booX +0 , booY -5 , 30 , 50 );
// Creature body //
  fill( 200 , 0 , 200 );
  rect( booX , booY +20 , 30 , 60 );
}

void birds() {                                                                      /* . */
// Draw & move //
  bird1X += random(3,5);
  bird2X += random(2,4);
  bird3X += random(1,3);
  bird4X += random(4,6);

  fill( 245 , 245 , 220 );    
// beige //
  drawBird( bird1X, bird1Y+5-random(5) );

  fill( 255 , 105 , 180 ); 
// hot pink //
  drawBird( bird2X, bird2Y );
  
  fill( 100 );
// light blue //
  drawBird( bird3X, bird3Y );

  fill( 0,255,255 );
// grey //
  drawBird( bird4X, bird4Y );
}

void drawBird( float x, float y ) {                                            /* . */
// draw one bird //
  triangle( x,y, x-60,y-10, x-60,y+10 );
// Make the wings flap //
  float flap;
  if ( step/30 % 4 == 0 ) flap=  20;
  else if ( step/30 % 4 == 1 ) flap=  -10;
  else if ( step/30 % 4 == 2 ) flap=  -20;
  else flap=  +10;
  birdWing( x, y, flap );
}

void birdWing( float x, float y, float yup ) {                             /* . */
// Draw the wing //
  triangle( x-20,y, x-40,y, x-40,y-yup );
}

void keyPressed() {
  if (key == 'q') exit();
}