//pisano
float left=20, top=20, right=480, bottom=580;
float w= random (25,150);
float h= random (10,50);
float r= random (100,255);
float g= random (100,255);
float b= random (100,255);

Fish rob;
Fish tim;
Fish john;
int many=5;
Fish[] school;

void setup(){
  size (500,600);
  //background(100,100,100);
  reset();
}

void reset(){
  rob= new Fish();
  rob.name = "rob";
  tim= new Fish();
  tim.name = "tim";
  john= new Fish();
  john.name= "john";
 /* school= new Fish[many];
  for (int j=0; j<many; j++){
    school[j]= new Fish ( j+"");
}*/
}

void draw(){//draws tank, calls show and move functions
  background (150,150,150);
  rectMode ( CORNERS );
  fill (25,100,200);
  rect (left,top,right, bottom);
  rob.move();
  rob.show();
  tim.move();
  tim.show();
  john.move();
  john.show();
 /* for (int j=0; j<many; j++){
    school[j].show();
    school[j].move();
 */
}


class Fish{ ///class characteristics
 float x=150+random(-70,200), y=150+random(-70,200);
 float dx=random(-6,6), dy=random(-3,3);
 String name="XXX";
 
 
  void move(){ //moves fish
    x += dx;
    y += dy;
    if (x<left+(w/2) || x>right-(w/2)) dx= -dx;
    if (y<top+(h/2) || y>bottom-(h/2)) dy=-dy;
    dy=  dy + random( -0.5, +0.5 );
    if (abs(dy) > 10) dy /= 10;
  
        
}

  void show(){ /// draws fish
    fill (r,g,b);
    ellipse (x,y,w,h);//body
    triangle (x-w/2,y,x-(w/2)-30,y-10,x-(w/2)-30,y+10);//fin
    text (name, x+15, y+15);
    
  }
}
void check(){
}
//keypressed(){