Free Hero Mesh

int scrollbar(int*cur,int page,int max,SDL_Event*ev,SDL_Rect*re) {
  int x0=re?re->x:0;
  int y0=re?re->y:0;
  int x1=re?re->x+12:12;
  int y1=re?re->y+re->h:screen->h;
  int y;
  double f;
  max-=page;
  if(max<0) max=0;
  switch(ev?ev->type:SDL_VIDEOEXPOSE) {
    case SDL_MOUSEMOTION:
      if(ev->motion.x<x0 || ev->motion.x>x1 || ev->motion.y<y0 || ev->motion.y>=y1) return 0;
      if(ev->motion.state&SDL_BUTTON(2)) {
        y=ev->motion.y;
        goto move;
      } else if(ev->motion.state&SDL_BUTTON(1)) {