class Entity{
  float x,y,vx,vy;
  float turnSpeed = 0.01;
  int age;
  boolean isEatable;
  boolean isPushable;
  boolean killMe;
  //-------------
  Entity(float ix, float iy){
    age = 0;
    x = ix;
    y = iy;
    float r = random(-PI,PI);
    vx = cos(r);
    vy = sin(r);
    isEatable = false;
    isPushable = false;
    killMe = false;
  }
  //-------------
  void update(){
    age++;
    x += vx*gameSpeed;
    y += vy*gameSpeed;
    
    if(x<-fieldMargin) x = width+fieldMargin;
    if(y<-fieldMargin) y = height+fieldMargin;
    if(x>width+fieldMargin) x = -fieldMargin;
    if(y>height+fieldMargin) y = -fieldMargin;
  }
  //-------------
  void visualize(){
  }
  //-------------
  void kill(){
    killMe = true;
  }
}