Free Hero Mesh

  c=classes[m->class];
  if(!c) return;
  n=playfield[y*64+x-65];
  while(n!=VOIDLINK) {
    if(d && objects[n]->class==m->class) return;
    if(c->collisionLayers&classes[objects[n]->class]->collisionLayers) {
      u=objects[n]->up;
      pfunlink(n);
      objtrash(n);
      free(objects[n]);
      n=u;
    } else {
      n=objects[n]->up;
    }
  }
  generation_number_inc=0;
  n=objalloc(m->class);
  if(n==VOIDLINK) return;
  objects[n]->x=x;
  objects[n]->y=y;
  objects[n]->image=m->img;
  objects[n]->dir=m->dir;
  objects[n]->misc1=m->misc1;