function proj_scanfront(scandist)
{
   vec_set(temp,vector(scandist,0,0));
   vec_rotate(temp,my.pan);
   vec_add(temp,my.x);

   c_trace(my.x, temp, ignore_me + ignore_passable + scan_texture);	

   // reposition at the target
   vec_set(scanstore, target);	
   vec_set(my.x, scanstore.x);
}