Function blocking_terrain

src/mthrowu.c:1281–1288

return TRUE if terrain at x,y blocks linedup checks */

/* return TRUE if terrain at x,y blocks linedup checks */
staticfn boolean
blocking_terrain(coordxy x, coordxy y)
{
    if (!isok(x, y) || IS_OBSTRUCTED(levl[x][y].typ) || closed_door(x, y)
        || is_waterwall(x, y) || levl[x][y].typ == LAVAWALL)
        return TRUE;
    return FALSE;
}

/* Move from (ax,ay) to (bx,by), but only if distance is up to BOLT_LIM
   and only in straight line or diagonal, calling fnc for each step.