void M_ClearBox (fixed_t *box)
{
    box[BOXTOP] = box[BOXRIGHT] = MININT;
    box[BOXBOTTOM] = box[BOXLEFT] = MAXINT;
}
void M_ClearBox (fixed_t *box)
{
    box[BOXTOP] = box[BOXRIGHT] = MININT;
    box[BOXBOTTOM] = box[BOXLEFT] = MAXINT;
}