]> git.sesse.net Git - pkanalytics/blobdiff - ultimate.js
Support filtering passes by thrower and receiver.
[pkanalytics] / ultimate.js
index 200303c32fdbada7d3df8738ee240d3903be4d06..f556ee4752d9d3594a7ab6f73dd6846df7182168 100644 (file)
@@ -116,9 +116,14 @@ function add_3cell_ci(tr, ci) {
        let text;
        if (ci.format === 'percentage') {
                text = (100 * ci.val).toFixed(0) + '%';
+       } else if (ci.decimals !== undefined) {
+               text = ci.val.toFixed(ci.decimals);
        } else {
                text = ci.val.toFixed(2);
        }
+       if (ci.unit !== undefined) {
+               text += ' '+ ci.unit;
+       }
        let element = add_3cell(tr, text);
        let to_x = (val) => { return ci_width * (val - ci.min) / (ci.max - ci.min); };
 
@@ -239,6 +244,13 @@ function calc_stats(json, filters) {
                'turnovers_lost': 0,
                'their_clean_holds': 0,
                'their_clean_breaks': 0,
+
+               'touches_for_turnover': 0,
+               'touches_for_goal': 0,
+               'time_for_turnover': [],
+               'time_for_goal': [],
+               'their_time_for_turnover': [],
+               'their_time_for_goal': [],
        };
        let globals = players['globals'];
 
@@ -266,6 +278,9 @@ function calc_stats(json, filters) {
 
                let we_lost_disc = false;
                let they_lost_disc = false;
+               let touches_this_possession = 0;
+               let possession_started = null;
+               let extra_ms_this_possession = 0;  // Used at stoppages.
 
                // The last used formations of the given kind, if any; they may be reused
                // when the point starts, if nothing else is set.
@@ -366,7 +381,9 @@ function calc_stats(json, filters) {
                        // Liveness management
                        if (type === 'pull' || type === 'their_pull' || type === 'restart') {
                                live_since = t;
-                               between_points = false;
+                               if (type !== 'restart') {
+                                       between_points = false;
+                               }
                        } else if (type === 'catch' && last_pull_was_ours === null) {
                                // Someone forgot to add the pull, so we'll need to wing it.
                                console.log(match['description'] + ' ' + format_time(t) + ': Missing pull on ' + our_score + '\u2013' + their_score + '; pretending to have one.');
@@ -460,6 +477,7 @@ function calc_stats(json, filters) {
                        if (type === 'pull') {
                                puller = e['player'];
                                pull_started = t;
+                               keep = keep_event(players, formations_used_this_point, /*last_pull_was_ours=*/true, filters);  // Will change below. This is an ugly hack.
                                if (keep) ++p.pulls;
                        } else if (type === 'in' || type === 'out' || type === 'stoppage' || type === 'restart' || type === 'unknown' || type === 'set_defense' || type === 'set_offense') {
                                // No effect on pull.
@@ -496,18 +514,33 @@ function calc_stats(json, filters) {
                                we_lost_disc = true;
                                if (keep && type !== 'goal' && !(type === 'set_defense' && last_pull_was_ours === null)) {
                                        ++globals.turnovers_lost;
+                                       globals.touches_for_turnover += touches_this_possession;
+                                       if (possession_started != null) globals.time_for_turnover.push((t - possession_started) + extra_ms_this_possession);
+                               } else if (keep && type === 'goal') {
+                                       globals.touches_for_goal += touches_this_possession;
+                                       if (possession_started != null) globals.time_for_goal.push((t - possession_started) + extra_ms_this_possession);
                                }
+                               touches_this_possession = 0;
+                               possession_started = null;
+                               extra_ms_this_possession = 0;
                        } else if (type === 'set_offense' || type === 'their_goal' || type === 'their_throwaway' || type === 'defense' || type === 'interception') {
                                offense = true;
                                they_lost_disc = true;
                                if (keep && type !== 'their_goal' && !(type === 'set_offense' && last_pull_was_ours === null)) {
                                        ++globals.turnovers_won;
+                                       if (possession_started != null) globals.their_time_for_turnover.push((t - possession_started) + extra_ms_this_possession);
+                               } else if (keep && type === 'their_goal') {
+                                       if (possession_started != null) globals.their_time_for_goal.push((t - possession_started) + extra_ms_this_possession);
                                }
+                               touches_this_possession = 0;
+                               possession_started = null;
+                               extra_ms_this_possession = 0;
                        }
                        if (type === 'goal' || type === 'their_goal') {
                                between_points = true;
                                we_lost_disc = false;
                                they_lost_disc = false;
+                               touches_this_possession = 0;
                        }
                        if (last_offense !== offense && live_since !== null) {
                                // Switched offense/defense status, so attribute this drive as needed,
@@ -528,7 +561,21 @@ function calc_stats(json, filters) {
                                }
                                live_since = t;
                        }
+                       // The rules for possessions are slightly different; we want to start at pulls,
+                       // not previous goals.
+                       if ((last_offense !== offense && type !== 'goal' && type !== 'their_goal' && live_since !== null) ||
+                           type === 'pull' || type === 'their_pull') {
+                               possession_started = t;
+                       } else if (type === 'stoppage') {
+                               if (possession_started !== null) {
+                                       extra_ms_this_possession = t - possession_started;
+                                       possession_started = null;
+                               }
+                       } else if (type === 'restart' && live_since !== null && !between_points) {
+                               possession_started = t;
+                       }
 
+                       // O/D-point management.
                        if (type === 'pull') {
                                last_pull_was_ours = true;
                        } else if (type === 'their_pull') {
@@ -602,22 +649,23 @@ function calc_stats(json, filters) {
                                // _not_ after an interception, or a self-pass that's not a goal.
                                // (It must mean we tipped off someone.) We'll count it as a regular one
                                // for the time being, although it will make hockey assists weird.
-                               if (keep) {
+                               if (keep) {  // TODO: keep_pass()?
                                        ++p.goals;
                                        ++p.callahans;
                                }
                                handler = prev_handler = null;
                        } else if (type === 'catch' || type === 'goal') {
                                if (handler !== null) {
-                                       if (keep) {
+                                       if (keep && keep_pass(handler, e['player'], filters)) {
                                                ++players[handler].num_throws;
                                                ++p.catches;
                                        }
                                }
 
-                               if (keep) ++p.touches;
+                               if (keep && keep_pass(handler, e['player'], filters)) ++p.touches;
+                               ++touches_this_possession;
                                if (type === 'goal') {
-                                       if (keep) {
+                                       if (keep && keep_pass(handler, e['player'], filters)) {
                                                if (prev_handler !== null) {
                                                        ++players[prev_handler].hockey_assists;
                                                }
@@ -634,27 +682,28 @@ function calc_stats(json, filters) {
                                        handler_got_by_interception = false;
                                }
                        } else if (type === 'throwaway') {
-                               if (keep) {
+                               if (keep && keep_pass(e['player'], null, filters)) {
                                        ++p.num_throws;
                                        ++p.throwaways;
                                }
                                handler = prev_handler = null;
                        } else if (type === 'drop') {
-                               if (keep) ++p.drops;
+                               if (keep && keep_pass(handler, e['player'], filters)) ++p.drops;
                                handler = prev_handler = null;
                        } else if (type === 'stallout') {
                                if (keep) ++p.stallouts;
                                handler = prev_handler = null;
                        } else if (type === 'was_d') {
-                               if (keep) ++p.was_ds;
+                               if (keep && keep_pass(handler, e['player'], filters)) ++p.was_ds;
                                handler = prev_handler = null;
                        } else if (type === 'defense') {
                                if (keep) ++p.defenses;
                        } else if (type === 'interception') {
-                               if (keep) {
+                               if (keep && keep_pass(null, e['player'], filters)) {
                                        ++p.catches;
                                        ++p.defenses;
                                        ++p.touches;
+                                       ++touches_this_possession;
                                }
                                prev_handler = null;
                                handler = e['player'];
@@ -700,17 +749,54 @@ function calc_stats(json, filters) {
        return players;
 }
 
-function process_matches(json, filtersets) {
+function recursively_expand_filterset(filterset, base, result)
+{
+       if (result.length >= 100) {
+               return;
+       }
+       if (base.length == filterset.length) {
+               result.push(base);
+               return;
+       }
+       let filter = filterset[base.length];
+       if (filter.split) {
+               let elements = filter.elements;
+               if (elements.size === 0) {
+                       elements = filter.choices;
+               }
+               for (const element of elements) {
+                       let split_filter = {
+                               'type': filter.type,
+                               'elements': new Set([ element ]),
+                               'split': false,  // Not used.
+                       };
+                       recursively_expand_filterset(filterset, [...base, split_filter], result);
+               }
+       } else {
+               recursively_expand_filterset(filterset, [...base, filter], result);
+       }
+}
+
+function expand_filtersets(filtersets) {
+       if (filtersets.length === 0) {
+               return [[]];
+       }
+
+       let expanded = [];
+       for (const filterset of filtersets) {
+               recursively_expand_filterset(filterset, [], expanded);
+       }
+       return expanded;
+}
+
+function process_matches(json, unexpanded_filtersets) {
        let chosen_category = get_chosen_category();
        write_main_menu(chosen_category);
 
-       let filterset_values = Object.values(filtersets);
-       if (filterset_values.length === 0) {
-               filterset_values = [[]];
-       }
+       let filtersets = expand_filtersets(Object.values(unexpanded_filtersets));
 
        let rowsets = [];
-       for (const filter of filterset_values) {
+       for (const filter of filtersets) {
                let players = calc_stats(json, filter);
                let rows = [];
                if (chosen_category === 'general') {
@@ -730,9 +816,9 @@ function process_matches(json, filtersets) {
        }
 
        let merged_rows = [];
-       if (filterset_values.length > 1) {
+       if (filtersets.length > 1) {
                for (let i = 0; i < rowsets.length; ++i) {
-                       let marker = make_filter_marker(filterset_values[i]);
+                       let marker = make_filter_marker(filtersets[i]);
 
                        // Make filter header.
                        let tr = rowsets[i][0];
@@ -861,6 +947,8 @@ function make_efficiency_ci(points_won, points_completed, z)
 //
 // Modified Wald (recommended by http://www.ine.pt/revstat/pdf/rs120203.pdf
 // since our rates are definitely below 2 per point).
+//
+// FIXME: z is ignored.
 function make_poisson_ci(val, num, z, inverted)
 {
        let low  = (val == 0) ? 0.0 : ((val - 0.5) - Math.sqrt(val - 0.5)) / num;
@@ -882,6 +970,75 @@ function make_poisson_ci(val, num, z, inverted)
        };
 }
 
+// Wilson and Hilferty, again recommended for general use in the PDF above
+// (anything from their group “G1” works).
+// https://en.wikipedia.org/wiki/Poisson_distribution#Confidence_interval
+function make_poisson_ci_large(val, num, z)
+{
+       let low  = val * Math.pow(1.0 - 1.0 / (9.0 * val) - z / (3.0 * Math.sqrt(val)), 3.0) / num;
+       let high = (val + 1.0) * Math.pow(1.0 - 1.0 / (9.0 * (val + 1.0)) + z / (3.0 * Math.sqrt(val + 1.0)), 3.0) / num;
+
+       // Fix the signs so that we don't get -0.00.
+       low = Math.max(low, 0.0);
+
+       // The display range of 0 to 25.0 is fairly arbitrary. We have no desire here
+       // (this is used for number of touches).
+       let avg = val / num;
+       return {
+               'val': avg,
+               'lower_ci': low,
+               'upper_ci': high,
+               'min': 0.0,
+               'max': 25.0,
+               'desired': 0.0,
+               'inverted': false,
+       };
+}
+
+// We don't really know what to expect for possessions; it appears roughly
+// lognormal, but my head doesn't work well enough to extract the CI for
+// the estimated sample mean, and now my head spins around whether we do
+// this correctly even for Poisson :-) But we do a simple (non-BCa) bootstrap
+// here, which should give us what we want.
+//
+// FIXME: z is ignored.
+function make_ci_duration(vals, z)
+{
+       // Bootstrap.
+       let sample_means = [];
+       for (let i = 0; i < 300; ++i) {
+               let sum = 0.0;
+               for (let j = 0; j < vals.length; ++j) {
+                       sum += vals[Math.floor(Math.random() * vals.length)];
+               }
+               sample_means.push(sum / vals.length);
+       }
+       sample_means.sort();
+
+       // Interpolating here would probably be better, but OK.
+       let low  = sample_means[Math.floor(0.025 * sample_means.length)];
+       let high = sample_means[Math.floor(0.975 * sample_means.length)];
+
+       // Find the point estimate of the mean.
+       let sum = 0.0;
+       for (const v of vals) {
+               sum += v;
+       }
+       let avg = sum / vals.length;
+
+       return {
+               'val': avg / 1000.0,
+               'lower_ci': low / 1000.0,
+               'upper_ci': high / 1000.0,
+               'min': 0.0,
+               'max': 120.0,
+               'desired': 0.0,
+               'inverted': false,
+               'unit': 'sec',
+               'decimals': 1,
+       };
+}
+
 function make_table_general(players) {
        let rows = [];
        {
@@ -944,10 +1101,10 @@ function make_table_team_wide(players) {
        {
                let row = document.createElement('tr');
                let name = add_3cell(row, 'Turnovers generated', 'name');
-               add_3cell(row, '');
                add_3cell(row, globals.turnovers_won);
                add_3cell(row, '');
                add_3cell(row, globals.turnovers_lost);
+               add_3cell(row, '');
                rows.push(row);
        }
 
@@ -985,6 +1142,69 @@ function make_table_team_wide(players) {
                rows.push(row);
        }
 
+       // Touches. We only have information for our team here.
+       {
+               let goals = 0;
+               for (const [q,p] of get_sorted_players(players)) {
+                       if (q === 'globals') continue;
+                       goals += p.goals;
+               }
+               let row = document.createElement('tr');
+               let name = add_3cell(row, 'Touches per possession (all)', 'name');
+               let touches = globals.touches_for_turnover + globals.touches_for_goal;
+               let possessions = goals + globals.turnovers_lost;
+               add_3cell(row, '');
+               add_3cell_ci(row, make_poisson_ci_large(touches, possessions, z));
+               add_3cell(row, '');
+               add_3cell(row, '');
+               rows.push(row);
+
+               row = document.createElement('tr');
+               add_3cell(row, 'Touches per possession (goals)', 'name');
+               add_3cell(row, '');
+               add_3cell_ci(row, make_poisson_ci_large(globals.touches_for_goal, goals, z));
+               add_3cell(row, '');
+               add_3cell(row, '');
+               rows.push(row);
+
+               row = document.createElement('tr');
+               add_3cell(row, 'Touches per possession (turnovers)', 'name');
+               add_3cell(row, '');
+               add_3cell_ci(row, make_poisson_ci_large(globals.touches_for_turnover, globals.turnovers_lost, z));
+               add_3cell(row, '');
+               add_3cell(row, '');
+               rows.push(row);
+       }
+
+       // Time. Here we have (roughly) for both.
+       {
+               let row = document.createElement('tr');
+               let name = add_3cell(row, 'Time per possession (all)', 'name');
+               let time = globals.time_for_turnover.concat(globals.time_for_goal);
+               let their_time = globals.their_time_for_turnover.concat(globals.their_time_for_goal);
+               add_3cell(row, '');
+               add_3cell_ci(row, make_ci_duration(time, z));
+               add_3cell(row, '');
+               add_3cell_ci(row, make_ci_duration(their_time, z));
+               rows.push(row);
+
+               row = document.createElement('tr');
+               add_3cell(row, 'Time per possession (goals)', 'name');
+               add_3cell(row, '');
+               add_3cell_ci(row, make_ci_duration(globals.time_for_goal, z));
+               add_3cell(row, '');
+               add_3cell_ci(row, make_ci_duration(globals.their_time_for_goal, z));
+               rows.push(row);
+
+               row = document.createElement('tr');
+               add_3cell(row, 'Time per possession (turnovers)', 'name');
+               add_3cell(row, '');
+               add_3cell_ci(row, make_ci_duration(globals.time_for_turnover, z));
+               add_3cell(row, '');
+               add_3cell_ci(row, make_ci_duration(globals.their_time_for_turnover, z));
+               rows.push(row);
+       }
+
        return rows;
 }
 
@@ -1335,10 +1555,12 @@ function open_filter_menu(click_to_add_div) {
        add_menu_item(filter_div, filterset, menu, 0, 'match', 'Match (any)');
        add_menu_item(filter_div, filterset, menu, 1, 'player_any', 'Player on field (any)');
        add_menu_item(filter_div, filterset, menu, 2, 'player_all', 'Player on field (all)');
-       add_menu_item(filter_div, filterset, menu, 3, 'formation_offense', 'Offense played (any)');
-       add_menu_item(filter_div, filterset, menu, 4, 'formation_defense', 'Defense played (any)');
-       add_menu_item(filter_div, filterset, menu, 5, 'starting_on', 'Starting on');
-       add_menu_item(filter_div, filterset, menu, 6, 'gender_ratio', 'Gender ratio');
+       add_menu_item(filter_div, filterset, menu, 3, 'thrower', 'Thrower (any)');
+       add_menu_item(filter_div, filterset, menu, 4, 'receiver', 'Receiver (any)');
+       add_menu_item(filter_div, filterset, menu, 5, 'formation_offense', 'Offense played (any)');
+       add_menu_item(filter_div, filterset, menu, 6, 'formation_defense', 'Defense played (any)');
+       add_menu_item(filter_div, filterset, menu, 7, 'starting_on', 'Starting on');
+       add_menu_item(filter_div, filterset, menu, 8, 'gender_ratio', 'Gender ratio');
 }
 
 function add_menu_item(filter_div, filterset, menu, menu_idx, filter_type, title) {
@@ -1410,7 +1632,7 @@ function show_submenu(filter_div, filterset, menu_idx, pill, filter_type) {
                                'id': match['match_id']
                        });
                }
-       } else if (filter_type === 'player_any' || filter_type === 'player_all') {
+       } else if (filter_type === 'player_any' || filter_type === 'player_all' || filter_type === 'thrower' || filter_type === 'receiver') {
                for (const player of global_json['players']) {
                        choices.push({
                                'title': player['name'],
@@ -1461,6 +1683,11 @@ function show_submenu(filter_div, filterset, menu_idx, pill, filter_type) {
                }
        }
 
+       let choice_set = new Set();
+       for (const choice of choices) {
+               choice_set.add(choice.id);
+       }
+
        for (const choice of choices) {
                let label = document.createElement('label');
 
@@ -1473,7 +1700,7 @@ function show_submenu(filter_div, filterset, menu_idx, pill, filter_type) {
                if (filter !== null && filter.elements.has(choice.id)) {
                        check.setAttribute('checked', 'checked');
                }
-               check.addEventListener('change', (e) => { checkbox_changed(filter_div, filterset, e, filter_type, choice.id); });
+               check.addEventListener('change', (e) => { checkbox_changed(filter_div, filterset, e, filter_type, choice.id, choice_set); });
 
                subitem.appendChild(check);
                subitem.appendChild(document.createTextNode(choice.title));
@@ -1481,6 +1708,33 @@ function show_submenu(filter_div, filterset, menu_idx, pill, filter_type) {
                label.appendChild(subitem);
                subitems.push(label);
        }
+
+       // If meaningful (it's not for player_all, since all data for that would be
+       // the same anyway), show the split checkbox.
+       if (choices.length > 1 && filter_type !== 'player_all') {
+               let label = document.createElement('label');
+
+               let subitem = document.createElement('div');
+               subitem.classList.add('option');
+
+               let check = document.createElement('input');
+               check.setAttribute('type', 'checkbox');
+               check.setAttribute('id', 'choice_split');
+               if (filter !== null && filter.split) {
+                       check.setAttribute('checked', 'checked');
+               }
+               check.addEventListener('change', (e) => { checkbox_changed(filter_div, filterset, e, filter_type, 'split', choice_set); });
+
+               subitem.appendChild(check);
+               let text_span = document.createElement('span');  // So that we can style its disabling later.
+               text_span.appendChild(document.createTextNode('Split'));
+               subitem.appendChild(text_span);
+               subitem.style.borderTop = '1px solid #ddd';
+
+               label.appendChild(subitem);
+               subitems.push(label);
+       }
+
        submenu.replaceChildren(...subitems);
        submenu.style.display = 'block';
 
@@ -1577,7 +1831,7 @@ function try_gc_filter_menus(cheap) {
        }
 }
 
-function checkbox_changed(filter_div, filterset, e, filter_type, id) {
+function checkbox_changed(filter_div, filterset, e, filter_type, id, choices) {
        let filter = find_filter(filterset, filter_type);
        let pills_div = filter_div.querySelector('.filters');
        if (e.target.checked) {
@@ -1591,19 +1845,34 @@ function checkbox_changed(filter_div, filterset, e, filter_type, id) {
                if (filter === null) {
                        filter = {
                                'type': filter_type,
-                               'elements': new Set([ id ]),
+                               'elements': new Set(),
+                               'choices': choices,
+                               'split': false,
                        };
+                       if (id === 'split') {
+                               filter.split = true;
+                       } else {
+                               filter.elements.add(id);
+                       }
                        filter.pill = make_filter_pill(filter_div, filterset, filter);
                        filterset.push(filter);
                        pills_div.appendChild(filter.pill);
                } else {
-                       filter.elements.add(id);
+                       if (id === 'split') {
+                               filter.split = true;
+                       } else {
+                               filter.elements.add(id);
+                       }
                        let new_pill = make_filter_pill(filter_div, filterset, filter);
                        pills_div.replaceChild(new_pill, filter.pill);
                        filter.pill = new_pill;
                }
        } else {
-               filter.elements.delete(id);
+               if (id === 'split') {
+                       filter.split = false;
+               } else {
+                       filter.elements.delete(id);
+               }
                if (filter.elements.size === 0) {
                        pills_div.removeChild(filter.pill);
                        inplace_filter(filterset, f => f !== filter);
@@ -1617,6 +1886,14 @@ function checkbox_changed(filter_div, filterset, e, filter_type, id) {
                        filter.pill = new_pill;
                }
        }
+       let choice_split = document.getElementById('choice_split');
+       if (filter.elements.size === 1) {
+               choice_split.nextSibling.style.opacity = 0.2;
+               choice_split.setAttribute('disabled', 'disabled');
+       } else {
+               choice_split.nextSibling.style.opacity = 1.0;
+               choice_split.removeAttribute('disabled');
+       }
 
        process_matches(global_json, global_filters);
 }
@@ -1655,8 +1932,14 @@ function make_filter_pill(filter_div, filterset, filter) {
                if (common_prefix !== null) {
                        text += ')';
                }
-       } else if (filter.type === 'player_any') {
-               text = 'Player (any): ';
+       } else if (filter.type === 'player_any' || filter.type === 'thrower' || filter.type === 'receiver') {
+               if (filter.type === 'player_any') {
+                       text = 'Player (any): ';
+               } else if (filter.type === 'thrower') {
+                       text = 'Thrower (any): ';
+               } else {
+                       text = 'Receiver (any): ';
+               }
                let sorted_players = Array.from(filter.elements).sort((a, b) => player_pos(a) - player_pos(b));
                let first = true;
                for (const player_id of sorted_players) {
@@ -1734,6 +2017,9 @@ function make_filter_pill(filter_div, filterset, filter) {
                        first = false;
                }
        }
+       if (filter.split && filter.elements.size !== 1) {
+               text += ' (split)';
+       }
 
        let text_node = document.createElement('span');
        text_node.innerText = text;
@@ -1764,6 +2050,23 @@ function make_filter_pill(filter_div, filterset, filter) {
        return pill;
 }
 
+function entire_gender(players) {
+       let gender = null;
+       for (const player_id of players) {
+               if (gender === null) {
+                       gender = find_player(player_id).gender;
+               } else if (gender !== find_player(player_id).gender) {
+                       return false;  // Not all are of the same gender.
+               }
+       }
+       for (const player of global_json['players']) {
+               if (player.gender === gender && !players.has(player.player_id)) {
+                       return false;  // Not all of this gender are in the group.
+               }
+       }
+       return true;
+}
+
 function make_filter_marker(filterset) {
        let text = '';
        for (const filter of filterset) {
@@ -1786,10 +2089,14 @@ function make_filter_marker(filterset) {
                                        text += desc.substr(common_prefix.length, 3);
                                }
                        }
-               } else if (filter.type === 'player_any' || filter.type === 'player_all') {
+               } else if (filter.type === 'player_any' || filter.type === 'player_all' || filter.type === 'thrower' || filter.type === 'receiver') {
                        let sorted_players = Array.from(filter.elements).sort((a, b) => player_pos(a) - player_pos(b));
-                       for (const player_id of sorted_players) {
-                               text += find_player(player_id)['name'].substr(0, 3);
+                       if (filter.elements.size >= 3 && entire_gender(filter.elements)) {
+                               text += find_player(sorted_players[0]).gender;
+                       } else {
+                               for (const player_id of sorted_players) {
+                                       text += find_player(player_id)['name'].substr(0, 3);
+                               }
                        }
                } else if (filter.type === 'formation_offense' || filter.type === 'formation_defense') {
                        let sorted_formation_id = Array.from(filter.elements).sort((a, b) => a - b);
@@ -1994,6 +2301,8 @@ function filter_passes(players, formations_used_this_point, last_pull_was_ours,
        } else if (filter.type === 'gender_ratio') {
                return filter.elements.has(find_gender_ratio_code(players));
        }
+       // NOTE: thrower and receiver uses different state information and applies
+       // to throws only, so will be checked by keep_pass() instead.
        return true;
 }
 
@@ -2006,6 +2315,25 @@ function keep_event(players, formations_used_this_point, last_pull_was_ours, fil
        return true;
 }
 
+function pass_filter_passes(thrower, receiver, filter) {
+       if (filter.type === 'thrower') {
+               return filter.elements.has(thrower);
+       } else if (filter.type === 'receiver') {
+               return filter.elements.has(receiver);
+       }
+       // The others are tested in keep_event().
+       return true;
+}
+
+function keep_pass(thrower, receiver, filters) {
+       for (const filter of filters) {
+               if (!pass_filter_passes(thrower, receiver, filter)) {
+                       return false;
+               }
+       }
+       return true;
+}
+
 // Heuristic: If we go at least ten seconds without the possession changing
 // or the operator specifying some other formation, we probably play the
 // same formation as the last point.