4 #include "groupscreen.h"
5 #include "fetch_group.h"
6 #include "fetch_max_score_for_song.h"
7 #include "fetch_max_score_for_player.h"
8 #include "fetch_needs_update.h"
9 #include "fetch_highscore.h"
12 GroupScreen::GroupScreen(pqxx::connection &conn, unsigned tournament, unsigned round, unsigned parallel)
13 : tournament(tournament), round(round), parallel(parallel), scores_changed(conn, "scores"), conn(conn), valid(false)
17 GroupScreen::~GroupScreen()
21 bool GroupScreen::check_invalidated()
25 if (!scores_changed.get_flag())
29 conn.perform(FetchNeedsUpdate(last_updated, tournament, round, parallel, &needs_update));
32 scores_changed.reset_flag();
37 void GroupScreen::draw(unsigned char *buf)
39 std::vector<TextDefer> td;
41 scores_changed.reset_flag();
44 conn.perform(FetchGroup(tournament, round, parallel, &group));
45 gettimeofday(&last_updated, NULL);
47 memset(buf, 0, 800 * 600 * 4);
52 std::sprintf(heading, "Round %u", round);
54 std::sprintf(heading, "Round %u, Group %u", round, parallel);
58 unsigned width = my_draw_text(heading, NULL, 48.0);
59 my_draw_text_deferred(td, heading, 48.0, 800/2 - width/2, 60);
62 // Find out how wide each column has to be. First try unlimited width (ie.
63 // long titles for everything); if that gets too long, try again with short
64 // titles for chosen songs.
65 unsigned width[16], num_scores;
66 unsigned max_num_width = my_draw_text("8888", NULL, 22.0);
68 for (unsigned mode = 0; mode < 2; ++mode) {
69 for (unsigned i = 0; i < 16; ++i)
72 for (std::vector<Player>::const_iterator i = group.players.begin(); i != group.players.end(); ++i) {
74 width[0] = std::max(width[0], my_draw_text(i->nick, NULL, 18.0));
76 for (std::vector<Score>::const_iterator j = i->scores.begin(); j != i->scores.end(); ++j, ++col) {
78 width[col] = std::max(width[col], my_draw_text((mode == 0) ? j->song.title : j->song.short_title, NULL, 12.0) +
81 width[col] = std::max(width[col], my_draw_text(j->song.short_title, NULL, 12.0));
82 width[col] = std::max(width[col], max_num_width);
87 num_scores = group.players[0].scores.size();
89 width[num_scores + 1] = std::max(my_draw_text("Total", NULL, 12.0), max_num_width);
90 width[num_scores + 2] = my_draw_text("Rank", NULL, 12.0);
92 // if we're at long titles and that works, don't try the short ones
95 for (unsigned i = 0; i <= num_scores + 2; ++i)
96 sumwidth += width[i] + 20;
103 * If we have space to go, distribute as much as we can to the chosen song column, so we won't have
104 * total and rank jumping around.
106 if (sumwidth < 780) {
107 int first_chosen_col = -1;
110 for (std::vector<Score>::const_iterator i = group.players[0].scores.begin(); i != group.players[0].scores.end(); ++i, ++col) {
112 first_chosen_col = col;
117 if (first_chosen_col != -1) {
118 width[first_chosen_col] += 780 - sumwidth;
122 // make column headings from the first player's songs
124 unsigned x = 40 + width[0];
125 for (std::vector<Score>::const_iterator i = group.players[0].scores.begin(); i != group.players[0].scores.end(); ++i, ++col) {
127 unsigned this_width = my_draw_text(i->song.short_title, NULL, 12.0);
128 my_draw_text_deferred(td, i->song.short_title, 12.0, x + width[col] / 2 - this_width / 2, 100);
130 x += width[col] + 20;
133 my_draw_text_deferred(td, "Total", 12.0, x + width[num_scores + 1] / 2 - my_draw_text("Total", NULL, 12.0) / 2, 100);
134 x += width[num_scores + 1] + 20;
135 my_draw_text_deferred(td, "Rank", 12.0, x + width[num_scores + 2] / 2 - my_draw_text("Rank", NULL, 12.0) / 2, 100);
137 // show all the players and the scores
139 for (std::vector<Player>::const_iterator i = group.players.begin(); i != group.players.end(); ++i) {
140 my_draw_text_deferred(td, i->nick, 18.0, 20, y);
142 unsigned x = 40 + width[0];
145 for (std::vector<Score>::const_iterator j = i->scores.begin(); j != i->scores.end(); ++j, ++col) {
147 if (j->score != -1) {
148 std::sprintf(text, "%u", j->score);
151 unsigned this_width = my_draw_text(text, NULL, 22.0);
153 my_draw_text_deferred(td, text, 22.0, x + max_num_width - this_width, y);
155 // draw the long name if we can, otherwise use the short one
156 if (my_draw_text(j->song.title, NULL, 12.0) > width[col]) {
157 my_draw_text_deferred(td, j->song.short_title, 12.0, x + max_num_width + 10, y);
159 my_draw_text_deferred(td, j->song.title, 12.0, x + max_num_width + 10, y);
162 my_draw_text_deferred(td, text, 22.0, x + width[col] / 2 - this_width / 2, y);
164 x += width[col] + 20;
170 std::sprintf(text, "%u", i->total);
172 unsigned this_width = my_draw_text(text, NULL, 22.0);
173 my_draw_text_deferred(td, text, 22.0, x + width[num_scores + 1] / 2 - this_width / 2, y);
174 x += width[num_scores + 1] + 20;
181 * Approximate (but probably working quite well in practice) heuristic
182 * for finding the min and max rank of a player works as follows:
184 * First of all, find out, for each player in the group, what the
185 * maximum remaining score possibly can be (the minimum score is of
186 * course identical to the player's current total). For a random song,
187 * this is of course 1000 * (maximum feet rating) (but of course, that
188 * depends on whether we can play single or double! for now, assume
189 * double is okay, but this logic will be deferred to FetchMaxScore
190 * anyhow); for a random song, we simply pick the highest-ranking song
191 * we can find, EXCEPT those the player has chosen earlier AND the
192 * random songs this round, AND all random songs from elimination rounds
193 * (ie. rounds with only one group). (Phew!) This doesn't solve problems
194 * we'd face with more than one chosen song, but it should be good enough.
196 * After we've found the max and min scores for all players, it's a simple
197 * matter of sorting; the best attainable rank for player X is obtained if
198 * X gets max score and all others get min score, the worst attainable rank
199 * is obtained if X gets min score and all others get max score.
201 * This is a bit SQL-heavy, but heck...
203 std::vector<unsigned> max_score, min_score;
204 for (std::vector<Player>::const_iterator i = group.players.begin(); i != group.players.end(); ++i) {
205 unsigned min_score_tp = 0, max_score_tp = 0;
206 for (std::vector<Score>::const_iterator j = i->scores.begin(); j != i->scores.end(); ++j, ++col) {
207 if (j->score != -1) {
209 min_score_tp += j->score;
210 max_score_tp += j->score;
212 unsigned max_score_this_song;
213 if (j->song.id != -1) {
214 // random song, or we know what song the player picked
215 conn.perform(FetchMaxScoreForSong(tournament, j->song.id, &max_score_this_song));
217 conn.perform(FetchMaxScoreForPlayer(tournament, i->id, round, &max_score_this_song));
219 max_score_tp += max_score_this_song;
222 max_score.push_back(max_score_tp);
223 min_score.push_back(min_score_tp);
226 // now finally find min and max rank, and draw it all
228 for (unsigned i = 0; i < group.players.size(); ++i) {
229 unsigned best_rank = 1, worst_rank = 1;
230 for (unsigned j = 0; j < group.players.size(); ++j) {
234 if (max_score[i] < min_score[j])
236 if (min_score[i] <= max_score[j])
241 if (best_rank == worst_rank)
242 std::sprintf(text, "%u", best_rank);
244 std::sprintf(text, "%u-%u", best_rank, worst_rank);
246 unsigned this_width = my_draw_text(text, NULL, 22.0);
247 my_draw_text_deferred(td, text, 22.0, x + width[num_scores + 2] / 2 - this_width / 2, y);
253 * Next up (at the bottom) is "who's playing, what will he/she be playing, and
254 * optionally, how much to lead/win and how much to secure qualification" (the
255 * last one only in the final round). We assume playing is done in a modified
256 * zigzag; all the random songs are played first in zigzag/wrapping order (player
257 * 1 song 1, player 2 song 2, player 3 song 3, player 1 song 2, player 2 song 3,
258 * player 3 song 1, etc... assuming three songs and three players) and then all
259 * the chosen songs are played (we assume only one chosen song).
261 * The lines are as follows:
265 * High score: <hs> by <hsplayer> at <hsevent>
266 * Needs to lead: <leadscore>
267 * Needs to secure qualification: <qualscore>
268 * Needs to win group: <winscore>
271 /* Find the first player with the fewest songs played. */
272 unsigned min_played_songs = 9999, num_random_songs = 0;
273 Player *next_player = NULL;
274 for (std::vector<Player>::iterator i = group.players.begin(); i != group.players.end(); ++i) {
275 unsigned this_played = 0, this_random_songs = 0;
276 for (std::vector<Score>::const_iterator j = i->scores.begin(); j != i->scores.end(); ++j, ++col) {
283 if (this_played < min_played_songs) {
284 min_played_songs = this_played;
286 num_random_songs = this_random_songs; // should be equal for all
290 /* Find out what song this player is supposed to play next; try random songs first */
291 Score *next_song = NULL;
293 for (unsigned i = 0; i < num_random_songs; ++i) {
294 unsigned j = (i + next_player->position - 1) % num_random_songs;
295 if (next_player->scores[j].score == -1) {
296 next_song = &(next_player->scores[j]);
301 // then all songs, if that didn't work out (slightly icky, but hey)
302 if (next_song == NULL) {
303 for (unsigned i = 0; i < num_scores; ++i) {
304 unsigned j = (i + next_player->position) % num_scores;
305 if (next_player->scores[j].score == -1) {
306 next_song = &(next_player->scores[j]);
312 if (next_song != NULL) {
313 widestring text = widestring("Next player: ") + next_player->nick;
314 unsigned this_width = my_draw_text(text, NULL, 24.0);
315 my_draw_text(text, buf, 24.0, 400 - this_width/2, 420);
317 if (next_song->song.id != -1) {
318 this_width = my_draw_text(next_song->song.title, NULL, 20.0);
319 my_draw_text(next_song->song.title, buf, 20.0, 400 - this_width/2, 457);
322 conn.perform(FetchHighscore(next_song->song.id, &hs));
324 if (hs.score != -1) {
325 text = widestring("High score: ") + widestring(pqxx::to_string(hs.score)) +
326 widestring(", by ") + hs.nick + widestring(" in ") + hs.tournament_name;
327 this_width = my_draw_text(text, NULL, 16.0);
328 my_draw_text(text, buf, 16.0, 400 - this_width/2, 487);
332 // only show lead/win/qualify for the last song
333 if (min_played_songs == num_scores - 1) {
335 * Find out how much we need to lead, how much we need to be guaranteed
336 * to win the group, and how much we need to secure qualification. (FIXME:
337 * do the last one :-) )
340 // find the best score we can get
341 unsigned max_score_this_song;
342 if (next_song->song.id != -1) {
343 // random song, or we know what song the player picked
344 conn.perform(FetchMaxScoreForSong(tournament, next_song->song.id, &max_score_this_song));
346 conn.perform(FetchMaxScoreForPlayer(tournament, next_player->id, round, &max_score_this_song));
351 // see what score this player must beat to lead
352 unsigned lead_beat = 0, win_beat = 0;
353 for (unsigned i = 0; i < group.players.size(); ++i) {
354 if (group.players[i].id == next_player->id)
357 lead_beat = std::max(lead_beat, group.players[i].total);
360 // find the best max score among the others
361 for (unsigned i = 0; i < group.players.size(); ++i) {
362 if (group.players[i].id == next_player->id)
365 win_beat = std::max(win_beat, max_score[i]);
369 * There's a somewhat subtle point here. Normally, what a player would be interested in
370 * with regard to qualification would be a set of three values:
372 * 1. How much is the absolute minimum required to qualify, given that all others
374 * 2. How much will give a reasonable chance of qualifying, given the expected performance
376 * 3. How much will be enough to secure qualification, no matter what?
378 * Given perfect guessing, #2 would be "how much is needed to qualify"; however, it is
379 * completely impossible to give an exact value for that, and we're not into the guessing
380 * games. :-) #1 is often so low it's completely unrealistic (ie. far enough from #2 that
381 * it's not interesting), but #3, the most conservative estimate, is often a good measure.
382 * #3 is "how much is needed to _secure_ qualification", and that is usually what we
383 * print out when it's possible.
385 * However, in a few situations, #1 and #3 will be the exact same value, from which it
386 * follows (from the squeeze law, or just common sense :-) ) that #2 will be the same
387 * value as #1 and #3. (This usually happens near or at the end of a group.) In that
388 * case, we know the value we seek (ie. "how much is needed to qualify"), so we drop
389 * the word "secure" and just print it as-is.
391 * To find #1 and #3, we sort and pick out the values we need to beat in the best and
394 int qualify_beat_worst_case = -1, qualify_beat_best_case = -1;
396 if (group.num_qualifying > 0) {
397 std::vector<unsigned> tmp;
399 for (unsigned i = 0; i < group.players.size(); ++i) {
400 if (group.players[i].id == next_player->id)
402 tmp.push_back(max_score[i]);
404 std::sort(tmp.begin(), tmp.end());
405 qualify_beat_worst_case = tmp[tmp.size() - group.num_qualifying];
407 std::vector<unsigned> tmp2;
408 for (unsigned i = 0; i < group.players.size(); ++i) {
409 if (group.players[i].id == next_player->id)
411 tmp2.push_back(min_score[i]);
414 std::sort(tmp2.begin(), tmp2.end());
415 qualify_beat_best_case = tmp2[tmp2.size() - group.num_qualifying];
418 // print out the lines we can attain
419 if (next_player->total + max_score_this_song > lead_beat && (lead_beat != win_beat)) {
420 int lead_need = std::max(lead_beat - next_player->total + 1, 0U);
422 text = widestring("Needs to lead: ") + widestring(pqxx::to_string(lead_need));
423 this_width = my_draw_text(text, NULL, 18.0);
424 my_draw_text(text, buf, 18.0, 400 - this_width/2, y);
429 if (next_player->total + max_score_this_song > win_beat) {
430 int win_need = std::max(win_beat - next_player->total + 1, 0U);
432 text = widestring("Needs to win: ") + widestring(pqxx::to_string(win_need));
434 this_width = my_draw_text(text, NULL, 18.0);
435 my_draw_text(text, buf, 18.0, 400 - this_width/2, y);
440 if (next_player->total + max_score_this_song > qualify_beat_worst_case && (qualify_beat_worst_case != win_beat)) {
441 int qual_need = std::max(qualify_beat_worst_case - next_player->total + 1, 0U);
443 if (qualify_beat_worst_case == qualify_beat_best_case) {
444 text = widestring("Needs to qualify: ") + widestring(pqxx::to_string(qual_need));
446 text = widestring("Needs to secure qualification: ") + widestring(pqxx::to_string(qual_need));
449 this_width = my_draw_text(text, NULL, 18.0);
450 my_draw_text(text, buf, 18.0, 400 - this_width/2, y);
458 draw_all_deferred_text(buf, td, last_text);