X-Git-Url: https://git.sesse.net/?p=ccbs;a=blobdiff_plain;f=bigscreen%2Fgroupscreen.cpp;h=d169bdbd1b2209c8714378b7699ec488a6d94f5a;hp=09c4389d17166848e3bb1c378aac900ceb5807f0;hb=3a708ad09d26d955393edfedbffdf668c58ccd48;hpb=9b9c0a0492feb4f6ba5567c98dd778ac1410a98f diff --git a/bigscreen/groupscreen.cpp b/bigscreen/groupscreen.cpp index 09c4389..d169bdb 100644 --- a/bigscreen/groupscreen.cpp +++ b/bigscreen/groupscreen.cpp @@ -1,7 +1,11 @@ +#include #include #include "groupscreen.h" #include "fetch_group.h" +#include "fetch_max_score_for_song.h" +#include "fetch_max_score_for_player.h" +#include "fetch_needs_update.h" #include "fonts.h" GroupScreen::GroupScreen(pqxx::connection &conn, unsigned tournament, unsigned round, unsigned parallel) @@ -15,80 +19,435 @@ GroupScreen::~GroupScreen() bool GroupScreen::check_invalidated() { - // we might want to do this slightly more sophisticated later, but for now this will do - return !valid || scores_changed.get_flag(); + if (!valid) + return true; + if (!scores_changed.get_flag()) + return false; + + bool needs_update; + conn.perform(FetchNeedsUpdate(last_updated, tournament, round, parallel, &needs_update)); + + if (!needs_update) + scores_changed.reset_flag(); + + return needs_update; } void GroupScreen::draw(unsigned char *buf) { + std::vector td; + scores_changed.reset_flag(); Group group; conn.perform(FetchGroup(tournament, round, parallel, &group)); + gettimeofday(&last_updated, NULL); memset(buf, 0, 800 * 600 * 4); + + // main heading + char heading[64]; + if (parallel == 0) { + sprintf(heading, "Round %u", round); + } else { + sprintf(heading, "Round %u, Group %u", round, parallel); + } + + { + unsigned width = my_draw_text(heading, NULL, 48.0); + my_draw_text_deferred(td, heading, 48.0, 800/2 - width/2, 60); + } - // find out how wide each column has to be - unsigned width[16]; - for (unsigned i = 0; i < 16; ++i) - width[i] = 0; + // Find out how wide each column has to be. First try unlimited width (ie. + // long titles for everything); if that gets too long, try again with short + // titles for chosen songs. + unsigned width[16], num_scores; + unsigned max_num_width = my_draw_text("8888", NULL, 22.0); + unsigned mode, sumwidth; + for (mode = 0; mode < 2; ++mode) { + for (unsigned i = 0; i < 16; ++i) + width[i] = 0; - unsigned max_num_width = my_draw_text("88888", NULL, 22.0); + for (std::vector::const_iterator i = group.players.begin(); i != group.players.end(); ++i) { + unsigned col = 1; + width[0] = std::max(width[0], my_draw_text(i->nick, NULL, 18.0)); - for (std::vector::const_iterator i = group.players.begin(); i != group.players.end(); ++i) { - width[0] = std::max(width[0], my_draw_text(i->nick, NULL, 18.0)); + for (std::vector::const_iterator j = i->scores.begin(); j != i->scores.end(); ++j, ++col) { + if (j->chosen) { + width[col] = std::max(width[col], my_draw_text((mode == 0) ? j->song.title : j->song.short_title, NULL, 12.0) + + max_num_width + 10); + } else { + width[col] = std::max(width[col], my_draw_text(j->song.short_title, NULL, 12.0)); + width[col] = std::max(width[col], max_num_width); + } + } + } + num_scores = group.players[0].scores.size(); + + width[num_scores + 1] = std::max(my_draw_text("Total", NULL, 12.0), max_num_width); + width[num_scores + 2] = my_draw_text("Rank", NULL, 12.0); + + // if we're at long titles and that works, don't try the short ones + sumwidth = 0; + + for (unsigned i = 0; i <= num_scores + 2; ++i) + sumwidth += width[i] + 20; + + if (sumwidth < 780) + break; + } + + /* + * If we have space to go, distribute as much as we can to the chosen song column, so we won't have + * total and rank jumping around. + */ + if (sumwidth < 780) { + int first_chosen_col = -1; unsigned col = 1; - for (std::vector::const_iterator j = i->scores.begin(); j != i->scores.end(); ++j, ++col) { - if (j->chosen) { - width[col] = std::max(width[col], my_draw_text(j->song.title, NULL, 12.0) + - max_num_width + 10); - } else { - width[col] = std::max(width[col], my_draw_text(j->song.title, NULL, 12.0)); - width[col] = std::max(width[col], max_num_width); + + for (std::vector::const_iterator i = group.players[0].scores.begin(); i != group.players[0].scores.end(); ++i, ++col) { + if (i->chosen) { + first_chosen_col = col; + break; } } - } + + if (first_chosen_col != -1) { + printf("first_chosen_col=%u\n", first_chosen_col); + width[first_chosen_col] += 780 - sumwidth; + } + } // make column headings from the first player's songs - unsigned col = 1, x = 40 + width[0]; + unsigned col = 1; + unsigned x = 40 + width[0]; for (std::vector::const_iterator i = group.players[0].scores.begin(); i != group.players[0].scores.end(); ++i, ++col) { if (!i->chosen) { - unsigned this_width = my_draw_text(i->song.title, NULL, 12.0); - my_draw_text(i->song.title, buf, 12.0, x + width[col] / 2 - this_width / 2, 30); + unsigned this_width = my_draw_text(i->song.short_title, NULL, 12.0); + my_draw_text_deferred(td, i->song.short_title, 12.0, x + width[col] / 2 - this_width / 2, 100); } x += width[col] + 20; } + + my_draw_text_deferred(td, "Total", 12.0, x + width[num_scores + 1] / 2 - my_draw_text("Total", NULL, 12.0) / 2, 100); + x += width[num_scores + 1] + 20; + my_draw_text_deferred(td, "Rank", 12.0, x + width[num_scores + 2] / 2 - my_draw_text("Rank", NULL, 12.0) / 2, 100); // show all the players and the scores - unsigned y = 70; + unsigned y = 140; for (std::vector::const_iterator i = group.players.begin(); i != group.players.end(); ++i) { - my_draw_text(i->nick, buf, 18.0, 20, y); + my_draw_text_deferred(td, i->nick, 18.0, 20, y); unsigned x = 40 + width[0]; unsigned col = 1; for (std::vector::const_iterator j = i->scores.begin(); j != i->scores.end(); ++j, ++col) { - char text[16]; - sprintf(text, "%u", j->score); + char text[16] = ""; + if (j->score != -1) { + sprintf(text, "%u", j->score); + } unsigned this_width = my_draw_text(text, NULL, 22.0); if (j->chosen) { - if (j->score != -1) { - my_draw_text(text, buf, 22.0, x + max_num_width - this_width, y); - } - my_draw_text(j->song.title, buf, 12.0, x + max_num_width + 10, y); + my_draw_text_deferred(td, text, 22.0, x + max_num_width - this_width, y); + my_draw_text_deferred(td, (mode == 0) ? j->song.title : j->song.short_title, 12.0, x + max_num_width + 10, y); } else { - if (j->score != -1) { - my_draw_text(text, buf, 22.0, x + width[col] / 2 - this_width / 2, y); - } + my_draw_text_deferred(td, text, 22.0, x + width[col] / 2 - this_width / 2, y); } x += width[col] + 20; } + // draw total + { + char text[16]; + sprintf(text, "%u", i->total); + + unsigned this_width = my_draw_text(text, NULL, 22.0); + my_draw_text_deferred(td, text, 22.0, x + width[num_scores + 1] / 2 - this_width / 2, y); + x += width[num_scores + 1] + 20; + } + y += 40; } + /* + * 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. + * + * This is a bit SQL-heavy, but heck... + */ + std::vector max_score, min_score; + for (std::vector::const_iterator i = group.players.begin(); i != group.players.end(); ++i) { + unsigned min_score_tp = 0, max_score_tp = 0; + for (std::vector::const_iterator j = i->scores.begin(); j != i->scores.end(); ++j, ++col) { + 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 + conn.perform(FetchMaxScoreForSong(tournament, j->song.id, &max_score_this_song)); + } else { + conn.perform(FetchMaxScoreForPlayer(tournament, i->id, round, &max_score_this_song)); + } + 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 + y = 140; + for (unsigned i = 0; i < group.players.size(); ++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); + + unsigned this_width = my_draw_text(text, NULL, 22.0); + my_draw_text_deferred(td, text, 22.0, x + width[num_scores + 2] / 2 - this_width / 2, y); + + y += 40; + } + + /* + * 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: + * + * + * + * High score: by at + * Needs to lead: + * Needs to secure qualification: + * Needs to win group: + */ + + /* 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::iterator i = group.players.begin(); i != group.players.end(); ++i) { + unsigned this_played = 0, this_random_songs = 0; + for (std::vector::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]); + printf("Selecting score %u\n", 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]); + printf("Selecting score %u\n", 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, 450); + + 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, 487); + + // fetch the high score later + text = widestring("High score: ") + widestring(pqxx::to_string(1234)) + + widestring(", by dufF in Challenge Cup 1, 2004"); + this_width = my_draw_text(text, NULL, 16.0); + my_draw_text(text, buf, 16.0, 400 - this_width/2, 517); + } + + // 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 + conn.perform(FetchMaxScoreForSong(tournament, next_song->song.id, &max_score_this_song)); + } else { + conn.perform(FetchMaxScoreForPlayer(tournament, next_player->id, round, &max_score_this_song)); + } + + unsigned y = 540; + + // 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 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 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); + + 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); + + 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); + + y += 30; + } + + if (next_player->total + max_score_this_song > qualify_beat_worst_case) { + int qual_need = std::max(qualify_beat_worst_case - next_player->total + 1, 0U); + + if (qualify_beat_worst_case == qualify_beat_best_case) { + text = widestring("Needs to qualify: ") + widestring(pqxx::to_string(qual_need)); + } else { + text = widestring("Needs to secure qualification: ") + widestring(pqxx::to_string(qual_need)); + } + + this_width = my_draw_text(text, NULL, 18.0); + my_draw_text(text, buf, 18.0, 400 - this_width/2, y); + + y += 30; + } + } + } + valid = true; + draw_all_deferred_text(buf, td, last_text); + last_text = td; }