/* This function adds the semeai related move reasons, using the information
* stored in the dragon2 array.
*
* If the semeai had an uncertain result, and there is a owl move with
* certain result doing the same, we don't trust the semeai move.
*/
void
semeai_move_reasons(int color)
{
int other = OTHER_COLOR(color);
int d;
int liberties;
int libs[MAXLIBS];
int r;
int resulta, resultb, semeai_move, s_result_certain;
for (d = 0; d < number_of_dragons; d++)
if (dragon2[d].semeais && DRAGON(d).status == CRITICAL) {
if (DRAGON(d).color == color
&& dragon2[d].semeai_defense_point
&& (dragon2[d].owl_defense_point == NO_MOVE
|| dragon2[d].semeai_defense_certain >=
dragon2[d].owl_defense_certain)) {
/* My dragon can be defended. */
add_semeai_move(dragon2[d].semeai_defense_point, dragon2[d].origin);
DEBUG(DEBUG_SEMEAI, "Adding semeai defense move for %1m at %1m\n",
DRAGON(d).origin, dragon2[d].semeai_defense_point);
if (neighbor_of_dragon(dragon2[d].semeai_defense_point,
dragon2[d].semeai_defense_target)
&& !neighbor_of_dragon(dragon2[d].semeai_defense_point,
dragon2[d].origin)
&& !is_self_atari(dragon2[d].semeai_defense_point, color)) {
/* If this is a move to fill the non-common liberties of the
* target, and is not a ko or snap-back, then we try all
* non-common liberties of the target and add all winning
* moves to the move list.
*/
liberties = findlib(dragon2[d].semeai_defense_target, MAXLIBS, libs);
for (r = 0; r < liberties; r++) {
if (!neighbor_of_dragon(libs[r], dragon2[d].origin)
&& !is_self_atari(libs[r], color)
&& libs[r] != dragon2[d].semeai_defense_point) {
owl_analyze_semeai_after_move(libs[r], color,
dragon2[d].semeai_defense_target,
dragon2[d].origin,
&resulta, &resultb, &semeai_move,
1, &s_result_certain, 0);
if (resulta == 0 && resultb == 0) {
add_semeai_move(libs[r], dragon2[d].origin);
DEBUG(DEBUG_SEMEAI,
"Adding semeai defense move for %1m at %1m\n",
DRAGON(d).origin, libs[r]);
}
}
}
}
}
else if (DRAGON(d).color == other
&& dragon2[d].semeai_attack_point
&& (dragon2[d].owl_attack_point == NO_MOVE
|| dragon2[d].owl_defense_point == NO_MOVE
|| dragon2[d].semeai_attack_certain >=
dragon2[d].owl_attack_certain)) {
/* Your dragon can be attacked. */
add_semeai_move(dragon2[d].semeai_attack_point, dragon2[d].origin);
DEBUG(DEBUG_SEMEAI, "Adding semeai attack move for %1m at %1m\n",
DRAGON(d).origin, dragon2[d].semeai_attack_point);
if (neighbor_of_dragon(dragon2[d].semeai_attack_point,
dragon2[d].origin)
&& !neighbor_of_dragon(dragon2[d].semeai_attack_point,
dragon2[d].semeai_attack_target)
&& !is_self_atari(dragon2[d].semeai_attack_point, color)) {
liberties = findlib(dragon2[d].origin, MAXLIBS, libs);
for (r = 0; r < liberties; r++) {
if (!neighbor_of_dragon(libs[r], dragon2[d].semeai_attack_target)
&& !is_self_atari(libs[r], color)
&& libs[r] != dragon2[d].semeai_attack_point) {
owl_analyze_semeai_after_move(libs[r], color, dragon2[d].origin,
dragon2[d].semeai_attack_target,
&resulta, &resultb, &semeai_move,
1, &s_result_certain, 0);
if (resulta == 0 && resultb == 0) {
add_semeai_move(libs[r], dragon2[d].origin);
DEBUG(DEBUG_SEMEAI,
"Adding semeai attack move for %1m at %1m\n",
DRAGON(d).origin, libs[r]);
}
}
}
}
}
}
}
/* This function adds the semeai related move reasons, using the information
* stored in the dragon2 array.
*
* If the semeai had an uncertain result, and there is a owl move with
* certain result doing the same, we don't trust the semeai move.
*/
void
semeai_move_reasons(int color)
{
int other = OTHER_COLOR(color);
int d;
int liberties;
int libs[MAXLIBS];
int r;
for (d = 0; d < number_of_dragons; d++)
if (dragon2[d].semeais && DRAGON(d).status == CRITICAL) {
if (DRAGON(d).color == color
&& dragon2[d].semeai_defense_point
&& (dragon2[d].owl_defense_point == NO_MOVE
|| dragon2[d].semeai_defense_certain >=
dragon2[d].owl_defense_certain)) {
/* My dragon can be defended. */
add_semeai_move(dragon2[d].semeai_defense_point, dragon2[d].origin);
DEBUG(DEBUG_SEMEAI, "Adding semeai defense move for %1m at %1m\n",
DRAGON(d).origin, dragon2[d].semeai_defense_point);
if (neighbor_of_dragon(dragon2[d].semeai_defense_point,
dragon2[d].semeai_defense_target)
&& !neighbor_of_dragon(dragon2[d].semeai_defense_point,
dragon2[d].origin)
&& !is_self_atari(dragon2[d].semeai_defense_point, color)) {
/* If this is a move to fill the non-common liberties of the
* target, and is not a ko or snap-back, then we mark all
* non-common liberties of the target as potential semeai moves.
*/
liberties = findlib(dragon2[d].semeai_defense_target, MAXLIBS, libs);
for (r = 0; r < liberties; r++) {
if (!neighbor_of_dragon(libs[r], dragon2[d].origin)
&& !is_self_atari(libs[r], color)
&& libs[r] != dragon2[d].semeai_defense_point)
add_potential_semeai_defense(libs[r], dragon2[d].origin,
dragon2[d].semeai_defense_target);
}
}
}
else if (DRAGON(d).color == other
&& dragon2[d].semeai_attack_point
&& (dragon2[d].owl_attack_point == NO_MOVE
|| dragon2[d].owl_defense_point == NO_MOVE
|| dragon2[d].semeai_attack_certain >=
dragon2[d].owl_attack_certain)) {
/* Your dragon can be attacked. */
add_semeai_move(dragon2[d].semeai_attack_point, dragon2[d].origin);
DEBUG(DEBUG_SEMEAI, "Adding semeai attack move for %1m at %1m\n",
DRAGON(d).origin, dragon2[d].semeai_attack_point);
if (neighbor_of_dragon(dragon2[d].semeai_attack_point,
dragon2[d].origin)
&& !neighbor_of_dragon(dragon2[d].semeai_attack_point,
dragon2[d].semeai_attack_target)
&& !is_self_atari(dragon2[d].semeai_attack_point, color)) {
liberties = findlib(dragon2[d].origin, MAXLIBS, libs);
for (r = 0; r < liberties; r++) {
if (!neighbor_of_dragon(libs[r], dragon2[d].semeai_attack_target)
&& !is_self_atari(libs[r], color)
&& libs[r] != dragon2[d].semeai_attack_point)
add_potential_semeai_attack(libs[r], dragon2[d].origin,
dragon2[d].semeai_attack_target);
}
}
}
}
}
