-
- /*
- * Next up (at the bottom) is "who's playing, what will he/she be playing, and
- * optionally, how much to lead/win and how much to secure qualification" (the
- * last one only in the final round). We assume playing is done in a modified
- * zigzag; all the random songs are played first in zigzag/wrapping order (player
- * 1 song 1, player 2 song 2, player 3 song 3, player 1 song 2, player 2 song 3,
- * player 3 song 1, etc... assuming three songs and three players) and then all
- * the chosen songs are played (we assume only one chosen song).
- *
- * The lines are as follows:
- *
- * <player>
- * <song>
- * High score: <hs> by <hsplayer> at <hsevent>
- * Needs to lead: <leadscore>
- * Needs to secure qualification: <qualscore>
- * Needs to win group: <winscore>
- */
-
- /* Find the first player with the fewest songs played. */
- unsigned min_played_songs = 9999, num_random_songs = 0;
- Player *next_player = NULL;
- for (std::vector<Player>::iterator i = group.players.begin(); i != group.players.end(); ++i) {
- unsigned this_played = 0, this_random_songs = 0;
- for (std::vector<Score>::const_iterator j = i->scores.begin(); j != i->scores.end(); ++j, ++col) {
- if (j->score != -1)
- ++this_played;
- if (!j->chosen)
- ++this_random_songs;
- }
-
- if (this_played < min_played_songs) {
- min_played_songs = this_played;
- next_player = &(*i);
- num_random_songs = this_random_songs; // should be equal for all
- }
- }
-
- /* Find out what song this player is supposed to play next; try random songs first */
- Score *next_song = NULL;
-
- for (unsigned i = 0; i < num_random_songs; ++i) {
- unsigned j = (i + next_player->position - 1) % num_random_songs;
- if (next_player->scores[j].score == -1) {
- next_song = &(next_player->scores[j]);
- break;
- }
- }
-
- // then all songs, if that didn't work out (slightly icky, but hey)
- if (next_song == NULL) {
- for (unsigned i = 0; i < num_scores; ++i) {
- unsigned j = (i + next_player->position) % num_scores;
- if (next_player->scores[j].score == -1) {
- next_song = &(next_player->scores[j]);
- break;
- }
- }
- }
-
- if (next_song != NULL) {
- widestring text = widestring("Next player: ") + next_player->nick;
- unsigned this_width = my_draw_text(text, NULL, 24.0);
- my_draw_text(text, buf, 24.0, 400 - this_width/2, 420);
-
- if (next_song->song.id != -1) {
- this_width = my_draw_text(next_song->song.title, NULL, 20.0);
- my_draw_text(next_song->song.title, buf, 20.0, 400 - this_width/2, 457);
-
- Highscore hs;
- conn.perform(FetchHighscore(next_song->song.id, &hs));
-
- if (hs.score != -1) {
- text = widestring("High score: ") + widestring(pqxx::to_string(hs.score)) +
- widestring(", by ") + hs.nick + widestring(" in ") + hs.tournament_name;
- this_width = my_draw_text(text, NULL, 16.0);
- my_draw_text(text, buf, 16.0, 400 - this_width/2, 487);
- }
- }
-
- // only show lead/win/qualify for the last song
- if (min_played_songs == num_scores - 1) {
- /*
- * Find out how much we need to lead, how much we need to be guaranteed
- * to win the group, and how much we need to secure qualification. (FIXME:
- * do the last one :-) )
- */
-
- // find the best score we can get
- unsigned max_score_this_song;
- if (next_song->song.id != -1) {
- // random song, or we know what song the player picked
- max_score_this_song = song_scores[next_song->song.id];
- } else {
- max_score_this_song = player_scores[next_player->id];
- }
-
- unsigned y = 520;
-
- // see what score this player must beat to lead
- unsigned lead_beat = 0, win_beat = 0;
- for (unsigned i = 0; i < group.players.size(); ++i) {
- if (group.players[i].id == next_player->id)
- continue;
-
- lead_beat = std::max(lead_beat, group.players[i].total);
- }
-
- // find the best max score among the others
- for (unsigned i = 0; i < group.players.size(); ++i) {
- if (group.players[i].id == next_player->id)
- continue;
-
- win_beat = std::max(win_beat, max_score[i]);
- }
-
- /*
- * There's a somewhat subtle point here. Normally, what a player would be interested in
- * with regard to qualification would be a set of three values:
- *
- * 1. How much is the absolute minimum required to qualify, given that all others
- * fail?
- * 2. How much will give a reasonable chance of qualifying, given the expected performance
- * of all the others?
- * 3. How much will be enough to secure qualification, no matter what?
- *
- * Given perfect guessing, #2 would be "how much is needed to qualify"; however, it is
- * completely impossible to give an exact value for that, and we're not into the guessing
- * games. :-) #1 is often so low it's completely unrealistic (ie. far enough from #2 that
- * it's not interesting), but #3, the most conservative estimate, is often a good measure.
- * #3 is "how much is needed to _secure_ qualification", and that is usually what we
- * print out when it's possible.
- *
- * However, in a few situations, #1 and #3 will be the exact same value, from which it
- * follows (from the squeeze law, or just common sense :-) ) that #2 will be the same
- * value as #1 and #3. (This usually happens near or at the end of a group.) In that
- * case, we know the value we seek (ie. "how much is needed to qualify"), so we drop
- * the word "secure" and just print it as-is.
- *
- * To find #1 and #3, we sort and pick out the values we need to beat in the best and
- * the worst case.
- */
- int qualify_beat_worst_case = -1, qualify_beat_best_case = -1;
-
- if (group.num_qualifying > 0) {
- std::vector<unsigned> tmp;
-
- for (unsigned i = 0; i < group.players.size(); ++i) {
- if (group.players[i].id == next_player->id)
- continue;
- tmp.push_back(max_score[i]);
- }
- std::sort(tmp.begin(), tmp.end());
- qualify_beat_worst_case = tmp[tmp.size() - group.num_qualifying];
-
- std::vector<unsigned> tmp2;
- for (unsigned i = 0; i < group.players.size(); ++i) {
- if (group.players[i].id == next_player->id)
- continue;
- tmp2.push_back(min_score[i]);
- }
-
- std::sort(tmp2.begin(), tmp2.end());
- qualify_beat_best_case = tmp2[tmp2.size() - group.num_qualifying];
- }
-
- // print out the lines we can attain
- if (next_player->total + max_score_this_song > lead_beat && (lead_beat != win_beat)) {
- int lead_need = std::max(lead_beat - next_player->total + 1, 0U);
-
- if (lead_need > 0) {
- text = widestring("Needs to lead: ") + widestring(pqxx::to_string(lead_need));
- this_width = my_draw_text(text, NULL, 18.0);
- my_draw_text(text, buf, 18.0, 400 - this_width/2, y);
-
- y += 30;
- }
- }
-
- if (next_player->total + max_score_this_song > win_beat) {
- int win_need = std::max(win_beat - next_player->total + 1, 0U);
-
- if (win_need > 0) {
- text = widestring("Needs to win: ") + widestring(pqxx::to_string(win_need));
-
- this_width = my_draw_text(text, NULL, 18.0);
- my_draw_text(text, buf, 18.0, 400 - this_width/2, y);