void MapDrawingArea::on_size_allocate(Gtk::Allocation& alloc)
{
DrawingArea::on_size_allocate(alloc);
setup_surfaces();
setup_bounds();
after_change();
}
MapDrawingArea::MapDrawingArea(BaseObjectType* cobject, const Glib::RefPtr<Gtk::Builder>&):
Gtk::DrawingArea(cobject),
pressed(false),
zoom(1),
tran_x(0),
tran_y(0),
topleft(-1, -1),
bottomright(1, 1),
lat(0),
lon(0)
{
add_events(Gdk::SCROLL_MASK | Gdk::ENTER_NOTIFY_MASK | Gdk::LEAVE_NOTIFY_MASK | Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK | Gdk::POINTER_MOTION_MASK);
setup_projection();
setup_surfaces();
setup_bounds();
}
static void
negamax(struct node *node)
{
assert(node->alpha < node->beta);
node_init(node);
if (check_trivial_draw(node) == is_trivial_draw)
return;
ht_prefetch(node->tt, node->pos->zhash[0]);
if (adjust_depth(node) == too_deep)
return;
if (handle_mate_search(node) == mate_search_handled)
return;
if (setup_bounds(node) == stand_pat_cutoff)
return;
if (setup_moves(node) == no_legal_moves)
return;
if (node->forced_pv == 0) {
if (fetch_hash_value(node) == hash_cutoff)
return;
}
else {
int r = move_order_add_hint(node->mo, node->forced_pv, 0);
(void) r;
assert(r == 0);
}
if (try_null_move_prune(node) == prune_successfull)
return;
if (recheck_bounds(node) == alpha_beta_range_too_small)
return;
assert(node->beta > -max_value + 2);
assert(node->alpha < max_value - 2);
do {
move_order_pick_next(node->mo);
if (can_prune_moves(node))
break;
move m = mo_current_move(node->mo);
int LMR_factor;
setup_child_node(node, m, &LMR_factor);
int value = negamax_child(node);
if (LMR_factor != 0) {
if (value > node->alpha) {
reset_child_after_lmr(node);
value = negamax_child(node);
}
else {
debug_trace_tree_pop_move(node);
continue;
}
}
value = handle_beta_extension(node, m, value);
if (value > node->value) {
node->value = value;
if (value > node->alpha) {
node->alpha = value;
new_best_move(node, m);
if (node->alpha >= node->beta)
fail_high(node);
else
node->expected_type = PV_node;
}
}
debug_trace_tree_pop_move(node);
} while (search_more_moves(node));
ht_entry entry = hash_current_node_value(node);
setup_best_move(node);
assert(node->repetition_affected_any == 0 || !node->is_GHI_barrier);
assert(node->repetition_affected_best == 0 || !node->is_GHI_barrier);
if (node->depth > 0) {
if (node->best_move != 0)
entry = ht_set_move(entry, node->best_move);
if (node->null_move_search_failed)
entry = ht_set_no_null(entry);
if (ht_value_type(entry) != 0 || node->best_move != 0)
ht_pos_insert(node->tt, node->pos, entry);
}
if (node->value < node->lower_bound)
node->value = node->lower_bound;
node->forced_pv = 0;
}
