int score=0;
int step;
float sunX=100, sunY=100;
float horizon;
float plueX, plueY;
float enemyX, enemyY;
float enemyStep;
float look;
float goldX, goldY;
float bird1X, bird1Y=20, bomb1Y=1;
float bird2X, bird2Y=40, bomb2Y=1;
float bird3X, bird3Y=60, bomb3Y=1;
float bird4X, bird4Y=80, bomb4Y=1;

void setup() {
  //setup//
  size(820, 600);
  horizon= height/2;
  sunY= horizon/2;
  plueX=width/2;
  plueY=height/2;
  enemyX=30;
  enemyY=random(horizon, height-60);
  goldX=width-50;
  goldY= random(horizon+50, height-50);
}

void reset() {
if (random(1) > 0.5) {
    plueX=  width-30;
    enemyX=30;
  } else {
    enemyX=  width-30;
    plueX=30;
  }
  plueY=  random( horizon,height-60 );
  enemyY=  random( horizon,height-60 );
  goldX=  random( width/4, width*3/4);
  goldY=  random(horizon+20,height-20);
  mouseY=height;
}

void draw() {
  //next frame//
  scene();
  birds();
  gold();
  hero();
  monster();
  scoring();
  step = step+1;
  if (step % 15 == 0) enemyStep=  random( -15, 15 );
}
void scene() {
  //sky, sun, etc.
  background(200, 200, 255);
  fill(255, 255, 0);
  ellipse(sunX, sunY, 125, 125);
  fill(200, 255, 200);
  rectMode(CORNER);
  rect(0, horizon, width, height*3/4);
  // sun moves across sky //
  if (sunX > width) {
    sunX=0;
    sunY=  random(30, horizon-30);
    score=  score+100;
  }
  sunX=  sunX+1;
  fill(0);
  //  text(sunX, sunX, sunY+40);
  text( "SCORE=  " + score, width-200, 50);
}
void birds() {
  bird1X += random(3,5);
  bird2X += random(2,4);
  bird3X += random(1,2);
  bird4X += random(2,3);
  
  if (bird1X>width+500) {
    bird1X=  80;
    bird1Y=  random(20,horizon);
  }
  if (bird2X>width+500) {
    bird2X=  80;
    bird2Y=  random(20,horizon);
  }
  if (bird3X>width+500) {
    bird3X=  80;
    bird3Y=  random(20,horizon);
  }
  if (bird4X>width+55) {
    bird4X=  80;
    bird4Y=  random(20,horizon);
  }

  // draw birds & bombs //
  fill( 255,0,0 );
  drawBird( bird1X, bird1Y+5-random(5) );
  bomb1Y=  updateBomb( bomb1Y );
  drawBomb( bird1X, bomb1Y );
  
  fill(0,255,0 );
  drawBird( bird2X, bird2Y+6-random(6) );
  bomb2Y=  updateBomb( bomb2Y );
  drawBomb( bird2X, bomb2Y );

  fill( 255,255,0 );
  drawBird( bird3X, bird3Y+5-random(5) );
  bomb3Y=  updateBomb( bomb3Y );
  drawBomb( bird3X, bomb3Y );

  fill( 0,255,255 );
  drawBird( bird4X, bird4Y+6-random(6) );
  bomb4Y=  updateBomb( bomb4Y );
  drawBomb( bird4X, bomb4Y );
}
void drawBird( float x, float y ) {
  //// draw one bird /////
  triangle( x,y, x-60,y-10, x-60,y+10 );
  // Make the wings flap (every 1/2 second).
  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 (up or down).
  triangle( x-20,y, x-40,y, x-40,y-yup );
}
float updateBomb( float y ) {
  if (y<=0 || y>height) return 0;
  return y + 1 + y/40;       
}
void drawBomb( float x, float y ) {
  if (y<=0) return;
  ellipse( x,y, 20,30 );
  stroke(255,0,0);
  fill( 255,0,0, 50 ); 
  ellipse( x,y, 50,50 );
  stroke(0);
  fill(0);
  triangle( x,y+3, x-15,y-12, x+15,y-12 );
}
void hero() {
  // move & draw Plue //
  plueX=  plueX + (mouseX-plueX)/30;
  plueY=  mouseY + (mouseY-plueY)/30;

  //head//
  fill(0, 255, 0);
  ellipse(plueX, plueY, 95, 100);
  //nose//
  fill(237, 82, 63);
  rect(plueX-10, plueY-5, 20, 20);
  //eyes //
  fill(255);
  ellipse(plueX-25, plueY-10, 20, 20);
  ellipse(plueX+25, plueY-10, 20, 20);
  fill(0, 9, 222);
  ellipse(plueX+25, plueY-10, 5, 5);
  ellipse(plueX-25, plueY-10, 5, 5);
  //mouth//
  fill(255, 82, 96);
  ellipse(plueX, plueY+30, 25, 15);
  //body//
  fill(167, 9, 257);
  rectMode(CENTER);
  rect(plueX, plueY+100, 100, 100);
  //legs//
  fill(0, 200, 255);
  rect(plueX+25, plueY+180, 25, 50);
  rect(plueX-25, plueY+180, 25, 50);
  //hands//
  fill(255, 160, 0);
  rect(plueX+75, plueY+20, 25, 95);
  rect(plueX-75, plueY+20, 25, 95);
  //name//
  fill(0);
  text( "PLUE", plueX-10, plueY+100 );
  //gold scoring//
  if ( dist( plueX, plueY, goldX, goldY ) < 50 ) {
    score += random( 100, 200 );
    background(255, 255, 255);
    reset();
  }
}

void monster() {
  //move and draw enemy//
  //chase plue
  enemyX=  enemyX + (plueX-enemyX)/150;
  enemyY=  enemyY + (plueY-enemyY)/150;

  if (dist(plueX, plueY, enemyX, enemyY) < 105) {
    eat();
  }

  //draw Enemy//
  //head//
  fill(255);
  ellipse(enemyX, enemyY, 95, 100);
  //nose//
  fill(237, 82, 0);
  rectMode(CENTER);
  rect(enemyX, enemyY, 20, 20);
  //eyes //
  fill(255);
  ellipse(enemyX-25, enemyY-10, 20, 20);
  ellipse(enemyX+25, enemyY-10, 20, 20);
  fill(255, 9, 6);
  ellipse(enemyX-25, enemyY-10, 5, 5);
  ellipse(enemyX+25, enemyY-10, 5, 5);
  //black brows//
  fill(0);
  rectMode(CENTER);  
  rect(enemyX, enemyY-25, 70, 5);
  //mouth//
  fill(255, 82, 96);
  ellipse(enemyX, enemyY+30, 25, 15);
  //body//
  fill(87, 169, 2);
  rectMode(CENTER);
  rect(enemyX, enemyY+100, 100, 100);
  //legs//
  fill(0);
  rect(enemyX+25, enemyY+180, 25, 35);
  rect(enemyX-25, enemyY+180, 25, 35);
  //hands//
  fill(255, 0, 0);
  rect(enemyX+90, enemyY+75, 55, 25);
  rect(enemyX-90, enemyY+75, 55, 25);
  //name//
  fill(255);
  text( "ENEMY ", enemyX-10, enemyY+100 );
  //gold scoring//
  if ( dist( goldX, goldY, enemyX, enemyY ) < 50 ) {
    goldX=  50;
    goldY=  random(horizon, height);
  }
}
void gold() {
  // Draw the gold. //
  if (goldY>horizon) {
    fill(random(250), random(200), random(150));
    ellipse( goldX, goldY, 40+random(10), 40+random(10) );
    fill(random(250), random(200), random(100));
    ellipse( goldX, goldY, 30+random(5), 30+random(5) );
    fill(255, 255, 0);
    ellipse( goldX, goldY, 20+random(10), 20+random(10) );
  }
}

void scoring() {
}

void eat() {
  //Monster kills hero. Deduct 200 from score.//
  score=  score - 200;
  background(255, 0, 0);
  plueX=  width/2;
  plueY=  height/2;
  enemyX=  width/2;
  enemyY=  height/2;
  enemyX=0;
}

void mousePressed() {
  //
  plueX=  mouseX;
  plueY=  mouseY;
  score= score - 50;
  enemyX=0;
  
}
void keyPressed() {
 
  if (key == 'q') exit();
  if (key == 'r') reset();
  if (key == '1') bomb1Y=  bird1Y;
  if (key == '2') bomb2Y=  bird2Y;
  if (key == '3') bomb3Y=  bird3Y;
  if (key == '4') bomb4Y=  bird4Y;
  if (key == '*') {
    bomb1Y=  bird1Y;
    bomb2Y=  bird2Y;
    bomb3Y=  bird3Y;
    bomb4Y=  bird4Y;
  }
}