/**Credit to Kotchen for his idea on waves
ORIGINAL NOTES HAVE BEEN MOVED TO A FILE CALLED "NOTES"**/
String title = ( "Schools of Fish" );
String author = ( "Jenna Klima" );

float water;
float sky;
float wavesI;
float wavesII;
float seaweed;
float tilt = 20;

float sunX = 50;
float sunY = 150;
float setDaycycle = 2;

int randomNumberOfFish;
float x, y, w, h;
float fishDX = 7;
float fishDY = 0;
float left, right;
float sealevel = 400;
float bottom = 500;

float waveX;

void setup ( ) {
  size ( 1020, 600 );
  reset ( );
}
void reset ( ) {
  //reset
  randomNumberOfFish = int ( random ( 3, 5 ) );
  //--  x = random ( width / 2 );
  //--  y = random ( height / 2 );
  x = 0;
  y = random ( 400, 450 );
  w = random( 10, 70 );
  h = w / 3;
}
void draw ( ) {
  water ( );
  wavesI ( );
  wavesII ( );
  wavesIIDoes ( );
  sky ( );
  seaweed ( );

  school ( randomNumberOfFish, x, y, w, h );
  x += fishDX;
  //    if ( x > right + width + 320 || x < left - width + 700 ) {
  //    if ( x > right + 1320 || x < left - 320 ) {
    if ( x > right + width + 320 || x < left - 320 ) {
    fishDX = -fishDX;
    y = random ( sealevel, bottom - 30 );          // random #, y, and SIZE of fish
    randomNumberOfFish = int ( random ( 3, 5 ) );
    w= random ( 10, 70 );
    h= w / 3;
  }
  sun ( );
  textSize ( 20 );
  fill ( 130 );
  text ( title, width / 3, 30 );
  text ( author, width / 10, 30 );
}
void water ( ) {
  if ( setDaycycle %2 == 0 ) {
  noStroke ( );
  fill ( 100, 100, 200 );
  rect ( 0, 200, width, height );
  }
  else {
  noStroke ( );
  fill ( 50, 50, 100 );
  rect ( 0, 200, width, height );
  }
}
void sky ( ) {
  if ( setDaycycle %2 == 0 ) {
  noStroke ( );
  fill ( 150, 150, 255 );
  rect ( 0, 0, width, height / 3 );
  }
  else{
  noStroke ( );
  fill ( 75 );
  rect ( 0, 0, width, height / 3 );
  }
}
void seaweed ( ) {
  if ( fishDX < 0 ) tilt = -20;
  if ( fishDX > 0 ) tilt = 20;
  for ( float x = 0; x < width + 10; x += 20 ) {
    //draw ONE seaweed
    if ( setDaycycle %2 == 0 ) {
      strokeWeight ( 3 );
      stroke ( 150, 250, 150 );
      line ( x, height, x + tilt, height - 75 );
    }
    else {
          strokeWeight ( 3 );
          stroke ( 50, 100, 50 );
          line ( x, height, x + tilt, height - 75 );
        }
  }
}
void wavesI ( ) {
  if ( setDaycycle %2 == 0 ) {
  //--  stroke ( 0 );
  fill ( 150, 150, 255 );
  }
  else {
  //--  stroke ( 0 );
  fill ( 75 );
  ellipseMode ( RADIUS );
  }
  //draw a STATIONARY line of waves
  for ( int j = 0; j < width + 11; j = j + 60 ) {
    ellipse ( j, 180, 60, 40 );
  }
}
void wavesII ( ) {
    if ( setDaycycle %2 == 0 ) {
      //--  stroke ( 0 );
      fill ( 150, 150, 255 );
    }
    else {
      //--  stroke ( 0 );
      fill ( 75 );
      ellipseMode ( RADIUS );
    }
  //draw a line of wavesI for moving later on
    for ( int j = 30; j < width; j = j + 60 ) {
      ellipse ( waveX + j, 180, 60, 40 );
      ellipse ( waveX - 30, 180, 60, 40 );
      ellipse ( waveX - 90, 180, 60, 40 );
      ellipse ( waveX - 150, 180, 60, 40 );
  }
}
void wavesIIDoes ( ) {
  //make line of wavesII move
  waveX = waveX + 4;

  //reset waves
  if ( waveX + 900 == width ) {
    waveX = 0;
  }
}
void sun ( ) {
  float arc = -70 * sin ( PI * sunX / width );
  //draw sun OR moon
  if ( setDaycycle %2 == 0 ) {
    ellipseMode ( CORNER );
    noStroke ( );
    fill ( 255, 255, 100 );
    ellipse ( sunX - 24, sunY - 24 + arc, 50, 50 );
    sunX = sunX + 1;

  //sun rays
  strokeWeight ( 3 );
  stroke ( 255, 255, 100 );
  line ( sunX + 40, sunY + 40 + arc, sunX + 18, sunY + 18 + arc );
  line ( sunX - 40, sunY - 40 + arc, sunX - 18, sunY - 18 + arc );
  
  line ( sunX + 40, sunY - 40 + arc, sunX + 18, sunY - 18 + arc );
  line ( sunX - 40, sunY + 40 + arc, sunX - 18, sunY + 18 + arc );
  
  line ( sunX, sunY + 25 + arc, sunX, sunY + 55 + arc );
  line ( sunX, sunY - 25 + arc, sunX, sunY - 55 + arc );
  
  line ( sunX + 25, sunY + arc, sunX + 55, sunY + arc );
  line ( sunX - 25, sunY + arc, sunX - 55, sunY + arc );
  }
  else { fill ( 220 );
  }
  ellipseMode ( CORNER );
  noStroke ( );
  ellipse ( sunX - 24, sunY - 24 + arc, 50, 50 );
  sunX = sunX + 2;

  //reset sun AND moon (works with both)
  if ( sunX > width + 10 ) {
  sunX = 0;
  //--  sunY = random ( 50, 130 );
  setDaycycle = setDaycycle +1 ;
  }
}
void school ( int randomNumberOfFish, float x, float y, float w, float h ) {
  //school of fish
  
  if ( fishDX > 0 ) {
          ////draw a school of n fish
          //draw first fish
          float xx = x;
          //higher (or lower)
          float up = h * 3;
          //width gets smaller
          float ww = w;
          float tt = h;        //tail height
        
          fish ( xx, y, w, h );
          ////now draw pairs behind this pair
          //new pair behind this pair
          xx = xx - 2 * w;
          for ( int j = 1; j < randomNumberOfFish; j++ ) {
          //draw new pair of fish
              fish ( xx, y + up, ww, tt );//----above
              fish ( xx, y - up, ww, tt );//----below
              xx= xx - 2 * ww;//----------------new pair behind this pair
              ww *= 0.7;//----------------------smaller width
              tt *= 0.7;//----------------------smaller tail-height
              up= up + h * 3;//-----------------up/down
          }
  }
    //fish swim RIGHT
    if ( fishDX < 0 ) {
          ////draw a school of n fish
          //draw first fish
          float xx = x;
          //higher (or lower)
          float up = h * 3;
          //width gets smaller
          float ww = w;
          //tail height
          float tt = h;
          fish ( xx, y, w, h );
          ////now draw pairs behind this pair
          //new pair behind this pair
          xx = xx + 2 * w;
          for ( int j = 1; j < randomNumberOfFish; j++ ) {
              //draw new pair of fish
              fish ( xx, y + up, ww, tt );//----above
              fish ( xx, y - up, ww, tt );//----below
              xx = xx + 2 * ww;//---------------new pair behind this pair
              ww *= 0.7;//----------------------smaller
              tt *= 0.7;//----------------------smaller tail-height
              up= up + h * 3;//-----------------up/down
            }//for//
     }//if//
}
void fish ( float x, float y, float w, float h ) {
  //draw fish
  if ( fishDX > 0 ) {
  //--    triangle ( x + 20, y, x - w, y - h, x - w, y + h );
  //--    ellipse ( x, y, w + 50, w - 40 );
  //--    ellipse ( x, y, w * 2, w );
  //--    fill ( color ( random ( 0, 100 ) ) );
    if ( setDaycycle %2 == 0 ) {
      noStroke ( );
      fill ( 150, 250, 250 );
      triangle ( x, y, x - w, y - h, x - w, y + h );
      ellipseMode ( RADIUS );
      ellipse ( x, y, w, w / 3 );
    }
        else {
          noStroke ( );
          fill ( 50, 100, 100 );
          triangle ( x, y, x - w, y - h, x - w, y + h );
          ellipseMode ( RADIUS );
          ellipse ( x, y, w, w / 3 );
        }
  }
  if ( fishDX < 0 ) {
        if ( setDaycycle %2 == 0 ) {
      noStroke ( );
      fill ( 150, 250, 250 );
      triangle ( x, y, x + w, y - h, x + w, y + h );
      ellipseMode ( RADIUS );
      ellipse ( x, y, w, w / 3 );
    }
        else {
          noStroke ( );
          fill (50, 100, 100 );
          triangle ( x, y, x + w, y - h, x + w, y + h );
          ellipseMode ( RADIUS );
          ellipse ( x, y, w, w / 3 );
        }
  }
}
void keyPressed ( ) {
  //keys
  if ( key == 'r' ) reset ( );
  if ( key == 'q' ) exit ( );
}