float SCREENSIZE;
 guy player;

ArrayList<guy> bugs = new ArrayList();
ArrayList<grass> grasses = new ArrayList();

 int mode;
 int PRE = 1;;
 int DURING = 2 ;
 int AFTER = 3;
 float       grassangle = PI/2;
 float grassspeed;
void setup(){
   size(500,500); 
   frameRate(45);
  smooth();
   SCREENSIZE = width;


  player = new guy(20,color(0,255,0,128));
 //textFont(loadFont("ARCENA-48.vlw"));
mode = PRE;
for(int i = 0; i < 15;i++){
  grasses.add(new grass());
}

      grassangle = PI/2;
}

 void addbug(){
     float x = random(SCREENSIZE);
     float y = -10;
   
     bugs.add(new guy(40,color(random(255),random(255),random(255),200),x,y));   
 }
 
 int score;
 int time = 100;
 int clicks;
 
 
 void mousePressed(){
    if(mode == PRE || mode == AFTER){
       score = 0;
       time = 60;
       mode = DURING;
       clicks = 0;
       bugs = new ArrayList();
    } 
 }

class grass{
   float x;
 float len;

   grass(){
      this.x = random(SCREENSIZE);
      len = SCREENSIZE/2 + random(SCREENSIZE/2);

   } 
   void draw(){
     noFill();
     stroke(0,128,0);
     strokeWeight(2);
      line(x,SCREENSIZE,x-(len*cos(grassangle)), SCREENSIZE-((len*sin(grassangle)/2)));
      //angle+=.1;
   }
  
  
}


void draw(){
  background(200,200,255);
/*
 grassspeed += random(-.01,.01);
  grassspeed = constrain(grassspeed,-1.0,1.0);

 grassangle += grassspeed;
  grassangle = constrain(grassangle,PI/4.0,PI*(3.0/4.0));
*/
  
 for(grass g : grasses){

   g.draw(); 
 }
  
  player.move();
  player.draw();
  if(mode == PRE){
    fill(255,200);
    text("greenbug",SCREENSIZE/5,SCREENSIZE/4);

    text("a and d to flap",SCREENSIZE/5,SCREENSIZE*4/8);
    text("and catch smaller bugs",SCREENSIZE/5,SCREENSIZE*5/8);

    text("click to start",SCREENSIZE/5,SCREENSIZE*7/8);

  return;  
  }
  if(mode == DURING || mode == AFTER){
    fill(255,200);
      text("score:"+score, SCREENSIZE/5,SCREENSIZE/8);
       
      text("time:"+time, SCREENSIZE/2,SCREENSIZE/8);
  }
  if(mode == AFTER){
text("greenbug",SCREENSIZE/5,SCREENSIZE/4);
    text("click to restart",SCREENSIZE/5,SCREENSIZE*7/8);

    return; 
  }
  clicks++;
  if(clicks % 45 == 0){
     time--; 
  }
  if(time == 0){
     mode = AFTER; 
  }
  
  
  while(bugs.size() < 3){
     addbug(); 
  }
  ArrayList<guy> bugsToRemove = new ArrayList<guy>(); 
  for(guy b : bugs){
     
     if(random(1) < .03){
        b.flapleft(); 
     }
     if(random(1) < .03){
        b.flapright(); 
     }
     
     b.move();
     
     if(b.hit(player)){
       score++;
        bugsToRemove.add(b);
     }
     
     b.draw();
  }
  bugs.removeAll(bugsToRemove);
  
}





void keyPressed(){
 

  if(key == 'a' || key == 'A'){
      player.flapleft();
   } 
   if(key == 'd'|| key == 'D'){
      player.flapright();
   } 
}
void keyReleased(){

  if(key == 'a'|| key == 'A'){
      player.releaseleft();
   } 
   if(key == 'd'|| key == 'D'){
      player.releaseright();
   } 
 }




class guy {
  
    float diameter;
    
    float angle = 0.3;
    float x = 200; 
    float y = 200;
    float angleleft = 0;
    float angleright = 0;  
    
    float anglespeed = 0;
    float radius;
    float scale;
    
    int c ;
    
    float xspeed , yspeed;
    
    float PUSH = 5;


        guy(float scale, int c){
      this(scale,c,SCREENSIZE /2,SCREENSIZE /2);         

    }

    
        guy(float scale, int c, float x, float y){
          this.c = c;
         diameter = SCREENSIZE / scale;
         radius = diameter/2;
         PUSH = scale/4;
         this.x = x;
         this.y = y;
         

    }
    
    void push(){
       yspeed += sin(angle-(PI/2)) * PUSH ;
       xspeed += cos(angle-(PI/2)) * PUSH ;
    }
    
    boolean hit(guy other){
       float dist = sqrt(pow(x-other.x,2) + pow(y-other.y,2)); 
       if(dist < radius + other.radius){
          return true; 
       } 
          return false; 
    }
    
    void flapleft(){
      if(angleleft < .1) {
        push();
      anglespeed = .3;
      angleleft = -.6;
      }
    }
    void releaseleft(){
      angleleft = 0;
      
    }
    void flapright(){
if(angleright < .1) {
      push();
      anglespeed = -.3;
      angleright = .6;      
    }
    }
    void releaseright(){
      angleright = 0;
    }  

    void move(){
       anglespeed *= .5;
              xspeed  *= .99;
              yspeed  *= .99;
      angle += anglespeed; 
     yspeed += .15;
      x += xspeed;
      y += yspeed;

      if(x < radius){
        x = radius;
         xspeed = abs(xspeed); 
      }
      if(y < radius){
        y = radius;
         yspeed = abs(yspeed); 
      }
      
      if(x > SCREENSIZE-radius){
        x = SCREENSIZE-radius;
         xspeed = -abs(xspeed); 
      }
      if(y > SCREENSIZE-radius){
         y = SCREENSIZE-radius;
         yspeed = -abs(yspeed); 
      }
      
      
     // grav
     
    }
    
    void draw(){
       pushMatrix();
       
       
       fill(c);
       
       strokeWeight(2);
       stroke(0,0,128);
       
       translate(x,y);
       ellipse(0,0,diameter,diameter); 
       rotate(angle);
       //translate(-diameter/.5,0);
       fill(255,128);
       pushMatrix();
       rotate(angleleft);
       triangle(-diameter,0,-diameter*.5,-diameter*.5,0,0);
      popMatrix();
       pushMatrix();
       rotate(angleright);
       triangle(diameter,0,diameter*.5, -diameter* .5,0,0);
      popMatrix();
       popMatrix();
    }
  
}