+}
+
+// some refactoring done, more should be
+void GroupScreen::draw(unsigned char *buf, unsigned width, unsigned height)
+{
+ std::vector<TextDefer> td;
+
+ scores_changed.reset_flag();
+ set_screen_size(width, height);
+
+ /*
+ * We'll probably need some values from here later on (although not all), just fetch them
+ * all while we're at it.
+ */
+ std::map<unsigned, unsigned> song_scores, player_scores;
+ conn.perform(FetchMaxScoreForSongs(tournament, &song_scores));
+ conn.perform(FetchMaxScoreForPlayers(tournament, round, &player_scores));
+
+ Group group;
+ conn.perform(FetchGroup(tournament, round, parallel, &group));
+ gettimeofday(&last_updated, NULL);
+
+ memset(buf, 0, width * height * 4);
+
+ std::vector<unsigned> colwidth;
+
+ draw_main_heading(td);
+ find_column_widths(group, colwidth);
+ draw_column_headings(td, group, colwidth);
+ draw_scores(td, group, colwidth);
+
+ unsigned num_scores = group.players[0].scores.size();
+
+ /*
+ * Approximate (but probably working quite well in practice) heuristic
+ * for finding the min and max rank of a player works as follows:
+ *
+ * First of all, find out, for each player in the group, what the
+ * maximum remaining score possibly can be (the minimum score is of
+ * course identical to the player's current total). For a random song,
+ * this is of course 1000 * (maximum feet rating) (but of course, that
+ * depends on whether we can play single or double! for now, assume
+ * double is okay, but this logic will be deferred to FetchMaxScore
+ * anyhow); for a random song, we simply pick the highest-ranking song
+ * we can find, EXCEPT those the player has chosen earlier AND the
+ * random songs this round, AND all random songs from elimination rounds
+ * (ie. rounds with only one group). (Phew!) This doesn't solve problems
+ * we'd face with more than one chosen song, but it should be good enough.
+ *
+ * After we've found the max and min scores for all players, it's a simple
+ * matter of sorting; the best attainable rank for player X is obtained if
+ * X gets max score and all others get min score, the worst attainable rank
+ * is obtained if X gets min score and all others get max score.
+ */
+ std::vector<unsigned> max_score, min_score;
+ for (std::vector<Player>::const_iterator i = group.players.begin(); i != group.players.end(); ++i) {
+ unsigned min_score_tp = 0, max_score_tp = 0;
+ for (std::vector<Score>::const_iterator j = i->scores.begin(); j != i->scores.end(); ++j) {
+ if (j->score != -1) {
+ // already given
+ min_score_tp += j->score;
+ max_score_tp += j->score;
+ } else {
+ unsigned max_score_this_song;
+ if (j->song.id != -1) {
+ // random song, or we know what song the player picked
+ max_score_this_song = song_scores[j->song.id];
+ } else {
+ max_score_this_song = player_scores[i->id];
+ }
+ max_score_tp += max_score_this_song;
+ }
+ }
+ max_score.push_back(max_score_tp);
+ min_score.push_back(min_score_tp);
+ }
+
+ // now finally find min and max rank, and draw it all
+ unsigned show_players = get_show_players(group);
+ unsigned y = (show_players <= 7) ? 140 : (140 - (show_players - 7) * 5);
+ for (unsigned i = 0; i < group.players.size() && (i/num_machines) < show_players; ++i) {
+ unsigned best_rank = 1, worst_rank = 1;
+ for (unsigned j = 0; j < group.players.size(); ++j) {
+ if (i == j)
+ continue;
+
+ if (max_score[i] < min_score[j])
+ ++best_rank;
+ if (min_score[i] <= max_score[j])
+ ++worst_rank;
+ }
+
+ char text[16];
+ if (best_rank == worst_rank)
+ std::sprintf(text, "%u", best_rank);
+ else
+ std::sprintf(text, "%u-%u", best_rank, worst_rank);
+
+ if (i % num_machines != machine)
+ continue;
+
+ // find out where to place this
+ unsigned x = 40 + colwidth[0];
+ for (unsigned j = 1; j <= num_scores + 1; ++j)
+ x += colwidth[j] + 20;
+
+ unsigned this_width = my_draw_text(text, NULL, 22.0);
+ my_draw_text_deferred(td, text, 22.0, x + colwidth[num_scores + 2] / 2 - this_width / 2, y);
+
+ if (show_players > 7)
+ y += 40 - (show_players - 7) * 4;
+ else
+ y += 40;
+ }
+
+ draw_next_up_single(buf, group, colwidth, song_scores, player_scores, max_score, min_score);