//Valondine Jeudy
//October 12, 2014
//Prof. Martin
//Project 2

String title="Birds, Bombs, Heroes and Monsters";
String author="Valondine Jeudy";

//global variables

float sunX= 85, sunY=85;
float horizon;

float heroX, heroY;
float evilX = 50, evilY = 400;
float goldX, goldY;


int score;
int step;


float bird1X, bird1Y =25, bomb1Y=1;
float bird2X, bird2Y =45, bomb2Y=1;
float bird3X, bird3Y =65, bomb3Y=1;

float bodyW = 25;
float bodyH = 30;


void setup() {
  //setup//
  score = 0;
  size(800, 600);
  horizon= height * 1/4;
}
void draw() {

  

    //next frame//
    scene();
    score(); 
    gold();
    hero();
    evil();
    hits();
    step+=1; //has something to do with the bird wing.
    birds();
     
}

  void reset() {

    // Start at opposite sides. //  
    if (random(1) > 0.5) {
      heroX=  width-30;
      evilX=30;
    } 
    else {
      evilX=  width-30;
      heroX=30;
    }
    heroY=  random( horizon, height-60 );
    evilY=  random( horizon, height-60 );
    goldX=  random( width/4, width*3/4);
    goldY=  random(horizon+20, height-20);
    
  }

  void scene() {
    //grass 
    fill(0, 255, 0);
    background(134, 241, 0);
    //sky
    fill(0, 191, 255);
    rectMode(CORNER);
    rect(0, 0, width, horizon);
    //sun
    fill(255, 255, 0);
    ellipse(sunX, sunY, 55, 55);
    sunX = sunX+1; 
    if (sunX>width) {
      //sun moves
      sunX=0;
      sunY= sunY;
    }
    textSize(16);
    text(title, width/3, 30 );
    textSize(12);
    fill(0);
    text(author, width/2-375, height-50 );
  }


  void hero() {
    //moves with the mouse
    heroX=  heroX + (mouseX-heroX)/60;
    heroY=  heroY + (mouseY-heroY)/60;
    if (heroY<horizon) heroY = horizon; // cant go above the horizon

      //Head
    fill(255);
    ellipseMode(CENTER);
    headHero(heroX, heroY-47, 35, 35);
    //Body
    fill(255, 0, 0);
    rectMode(CENTER);
    body( heroX, heroY, 20, 65);
    //Arms
    fill(1, 255, 0);
    arm(heroX, heroY-5, 70, 20);
    //Name
    textSize(14);
    fill(1, 1, 255);
    text("Hero", heroX-15, heroY-1);
  }


  void evil() {
    //head
    fill(255);
    rectMode(CENTER);
    headEvil(evilX, evilY+50, 35, 35);
    //body
    fill(255, 1, 25);
    rectMode(CENTER);
    body(evilX, evilY+92, 20, 50);
    //name
    fill(25, 25, 255);
    textSize(14);
    text("Evil", evilX-10, evilY+55);

    //movement
    evilX= evilX + (heroX - evilX)/55;
    evilY= evilY + (heroY - evilY)/55;
  }

  void birds() {
    /// movement of birds.
    bird1X += random(3, 5);
    bird2X += random(2, 4);
    bird3X += random(1, 2);

    // Reset birds after flight completed (+500).
    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);
    }
    // drawing of birds //
    fill( 255, 0, 0 );    //first bird
    drawBird( bird1X, bird1Y+5-random(5), bodyW, bodyH);
    bomb1Y=  updateBomb( bomb1Y );
    drawBomb( bird1X, bomb1Y );


    fill( 255, 155, 0 ); //color of second bird.
    drawBird( bird2X, bird2Y+2-random(1), bodyW, bodyH );
    bomb2Y=  updateBomb( bomb2Y );
    drawBomb( bird2X, bomb2Y );

    fill( 255, 255, 0 ); //color of third bird.
    drawBird( bird3X, bird3Y, bodyW+5, bodyH+5-random(6) );
    bomb3Y=  updateBomb( bomb3Y );
    drawBomb( bird3X, bomb3Y );
  }

  float updateBomb( float y ) {
    //// Calculate new Y value for bomb:  add 5 if >0 and <height
    if (y<=0 || y>height) return 0;
    return y + 1 + y/50;        // bomb going down with a 9.50 gravity.
  }
  void drawBomb( float x, float y ) {    
    //// draw a bomb IF y > 0 ////
    if (y<=0) return;
    ellipse( x, y, 20, 20 ); //size of the bomb.
    stroke(255, 0, 0);
    fill( 255, 0, 0, 15 );      // Red glow surrounds bomb.
    ellipse( x, y, 50, 50 );
    stroke(0);
  }

  void drawBird( float x, float y, float bodyW, float bodyH) {
    //// draw one bird /////

    ellipse( x, y, bodyW, bodyH-15);        // body
    // 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-10, y, x+7, y, x+8, y-yup );
  }

  void hits() {
    //if evil is 30 feet from the hero. eat
    if (dist(heroX, heroY, evilX, evilY) <=40) {
      eat();
    /*  //if the hero touches the gold. they will get 25 pts.
      if (dist(goldX, goldY, heroX, heroY) <50) {
        score+=25;
        background(255, 0, 255);
        reset();
      }
      if (dist(evilX, evilY, goldX, goldY)<50) {
        score-=25;
        reset();
      }
      //
*/
      if ( dist( evilX, evilY, bird1X, bomb1Y )  <  50 ) evilHit();
      if ( dist( evilX, evilY, bird2X, bomb2Y )  <  50 ) evilHit();
      if ( dist( evilX, evilY, bird3X, bomb3Y )  <  50 ) evilHit();
    }
  }


  void evilHit() {
    //evil is hit by a bomb.
    score+=25;
    background(255, 255, 255);
    evilX = 0;
    evilY = random(horizon, height);
  }


  //body parts of hero and evil
  void headHero(float x, float y, float w, float h) {
    //head
    ellipse(x, y, w, h);
  }

  void headEvil(float x, float y, float w, float h) {
    //head of evil
    rect(x, y, w, h);
  }

  void body(float x, float y, float w, float h) {
    //bodies of hero and evil
    rect(x, y, w, h);
  }

  void arm(float x, float y, float w, float h) {
    //function of arm
    rect(x, y, w, h);
  }

  void birdBody(float x, float y, float w, float h) {
    //body of the bird
    ellipse(x, y, w, h);
  }

  void score() {

    //score box
    textSize(15);
    text("Score:", width-100, 95);
    text( score, width-50, 95);
  }



  void eat() {
    //if the hero touches evil. it will lose 30 pts.
    score-= 30;
    evilX= random(0,width);
    evilY= random(horizon,height);
  }



  void gold() {
    //treasure
    fill(255, 255, 0);
    ellipse(goldX+36, goldY+500, 35, 35);
    //if the hero touches the gold. they will get 25 pts.
      if (dist(goldX, goldY, heroX, heroY) <50) {
        score+=25;
        background(255, 0, 255);
goldX = random(0,width);
goldY = random(horizon,height);
}
  }



  void keyPressed() {
    //handle the key

    if (key == 'q') exit();

    // Drop bomb when # 1,2,3,4 key is pressed.
    if (key == '1') bomb1Y=  bird1Y;
    if (key == '2') bomb2Y=  bird2Y;
    if (key == '3') bomb3Y=  bird3Y;

    if (key == '0') {
      bomb1Y=  bird1Y;  // all bombs goes down
      bomb2Y=  bird2Y;
      bomb3Y=  bird3Y;
    }
  }